173010335

17395xx36 WURTH | Alldatasheet

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Technical content

WPME-FDSM - Fixed Step Down Regulator Module Maximum Input 36V / 500mA / Fixed Output 3.3V, 5V, 12V or 15V

DESCRIPTION

The FDSM series of the MagI 3C Power Module family is a fixed output voltage, fully integrated DC- DC power supply including the controller IC, inductor and capacitors all in one package. For optimal performance the module is recommended for use with external input and output capacitors as well as a an input filter. The FDSM ensures fast time to market and low development costs. It is pin compatible with the common 78xx linear regulator series. The high efficiency reduces the power dissipation and in many cases a heatsink and assembly parts are unnecessary. 24V to 3.3V conversion achieves up to 83% efficiency. 24V to 5V conversion achieves up to 88% efficiency. 24V to 12V conversion achieves up to 94% efficiency. 24V to 15V conversion achieves up to 96% efficiency. The standard THT (11.6 x 10.16 x 7.55mm) package allows for easy assembly. TYPICAL APPLICATIONS

• Point-of-Load DC-DC applications
• Replacement for linear regulators
• Interface and microcontroller supplies
• General purpose

FEATURES

• Peak efficiency up to 97%
• Current capability up to 500mA
• Input voltage up to 36V
• Minimum inpput voltage / output voltage: 4.75 Vin / 3.3 Vout (173950336)

6.5 Vin / 5 Vout (173950536)

15 Vin / 12 Vout (173951236)

19 Vin / 15 Vout (173951536)

• No minimum load required
• Partially integrated input and output capacitors
• Integrated inductor
• Low output voltage ripple (<45mV pp typ.)
• Current mode control
• Pulse skipping for high efficiency at light loads
• Internal soft-start
• Short circuit protection
• Cycle by cycle current limit
• Pin compatible with the FDSM power module series
• Operating ambient temperature range: -40°C to 85°C
• RoHS & REACh compliant
• Case and potting material UL 94 Class V0 (flammability testing) certified
• Complies with EN55032 class B conducted and radiated emissions standard TYPICAL CIRCUIT DIAGRAM Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 1

WPME-FDSM - Fixed Step Down Regulator Module PINOUT (PACKAGE TYPE F) Type F package (pins are located at the front) MARKING DESCRIPTION MARKING DESCRIPTION WE Würth Elektronik eiSos GmbH & Co. KG

78 Indicates compatibility with 78xx linear regulator

VV Output voltage (3.3V, 5V, 12V or 15V) PIN DESCRIPTION SYMBOL NUMBER TYPE DESCRIPTION VIN 1 Power The supply input pin is a terminal for an input voltage source. It is recommended to use a 10µF/50V input capacitor. GND 2 Power Ground pin; reference for V IN and V OUT. VOUT 3 Power Regulated output voltage pin. There is no need for an external output capacitor. Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 2

WPME-FDSM - Fixed Step Down Regulator Module

ORDERING INFORMATION

ORDER CODE SPECIFICATIONS PACKAGE PACKAGING UNIT 173950336 36V / 500mA / 3.3Vout version Type F Tube with 43 pieces173950536 36V / 500mA / 5Vout version 173951236 36V / 500mA / 12Vout version 173951536 36V / 500mA / 15Vout version PIN COMPATIBLE FAMILY MEMBERS ORDER CODE SPECIFICATIONS PACKAGE PACKAGING UNIT 173950378 28V / 500mA / 3.3Vout Type F Tube with 42 pieces 173950578 28V / 500mA / 5Vout 173010378 28V / 1A / 3.3Vout 173010578 28V / 1A / 5Vout 173010342 42V / 1A / 3.3Vout 173010542 42V / 1A / 5Vout 173010335 36V / 1A / 3.3Vout Tube with 43 pieces173010535 36V / 1A / 5Vout 173011235 36V / 1A / 12Vout 173011535 36V / 1A / 15Vout 173950375 74.5V / 500mA / 3.3Vout Type B Tube with 43 pieces173950575 74.5V / 500mA / 5Vout 173951275 74.5V / 500mA / 12Vout SALES INFORMATION SALES CONTACT Würth Elektronik eiSos GmbH & Co. KG EMC and Inductive Solutions Max-Eyth-Str. 1

74638 Waldenburg

Tel. +49 (0) 7942 945 0 www.we-online.com/powermodules Technical support: powermodules@we-online.com Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 3

WPME-FDSM - Fixed Step Down Regulator Module ABSOLUTE MAXIMUM RATINGS Caution: Exceeding the listed absolute maximum ratings may affect the device negatively and may cause permanent damage. SYMBOL PARAMETER LIMIT UNITMIN(1) MAX(1) VIN Input pin voltage -0.3 44 V VOUT Output pin voltage -0.3 25 V Tstorage Assembled, non-operating storage temperature -40 125 ° C Vesd ESD Voltage (Human Body Model), according to EN61000-4-2 (2) -4 4 kV OPERATING CONDITIONS Operating conditions are conditions under which the device is intended to be functional. All values are referenced to GND. MIN and MAX limits are valid for the recommended ambient temperature range of -40 °C to 85 °C . Typical values represent statistically the utmost probable values at the following conditions: V IN= 4.75V to 36V (173950336), V IN= 6.5V to 36V (173950536), V IN= 15V to 36V (173951236), V IN= 19V to 36V (173951536), I OUT= 500mA, T A = 25 °C, unless otherwise noted. SYMBOL PARAMETER MIN(1) TYP(3) MAX(1) UNIT VIN Input Voltage (173950336) 4.75 - 36 V VIN Input Voltage (173950536) 6.5 - 36 V VIN Input Voltage (173951236) 15 - 36 V VIN Input Voltage (173951536) 19 - 36 V Ta Ambient temperature range -40 - 85 (4) °C IOUT Nominal output current - - 500 mA COUT MAX Maximal output capacitance - - 680 µF Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 4

WPME-FDSM - Fixed Step Down Regulator Module ELECTRICAL SPECIFICATIONS MIN and MAX limits are valid for the recommended ambient temperature range of -40°C to 85°C . Typical values represent statistically the utmost probable values at the following conditions: V IN= 24V (173950336, 173950536, 173951236 and 173951536), I OUT= 500mA, T A = 25°C, unless otherwise noted. SYMBOL PARAMETER TEST CONDITIONS LIMIT UNITMIN(1) TYP(3) MAX(1) Output Current ICL Current limit threshold VIN = 24V - 1.5 - A Output Voltage VOUT Regulated output voltage 173950336 - 3.3 - V 173950536 - 5 - V 173951236 - 12 - V 173951536 - 15 - V Line regulation IOUT = 500mA -0.4 ±0.2 0.4 % Load Regulation 10% to 100% load - ±0.6 - % Total output voltage regulation Full load, full input voltage range -4 ±2 4 % External 2x C OUT = 10µF, 25V, X5R, 20MHz BWL Output voltage ripple VOUT = 3.3V IOUT = 500mA - 6 - mVpp VOUT = 5V IOUT = 500mA - 5 - mVpp VOUT = 12V IOUT = 500mA - 30 - mVpp VOUT = 15V IOUT = 500mA - 40 - mVpp Switching Frequency fSW Switching frequency Continuous conduction mode (CCM) - 710 - kHz Input Current IIN No load input current Operating, switching - 0.1 1 mA Efficiency η Efficiency, IOUT = 500mA VIN = 4.75V, V OUT = 3.3V - 92 - % VIN = 24V, V OUT = 3.3V - 81 - % VIN = 36V, V OUT = 3.3V - 78 - % VIN = 6.5V, V OUT = 5V - 95 - % VIN = 24V, V OUT = 5V - 86 - % VIN = 36V, V OUT = 5V - 84 - % VIN = 16V, V OUT = 12V - 95 - % VIN = 24V, V OUT = 12V - 94 - % VIN = 20V, V OUT = 15V - 97 - % VIN = 24V, V OUT = 15V - 95 - % Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 5

WPME-FDSM - Fixed Step Down Regulator Module RoHS, REACh RoHS directive Directive 2011/65/EU of the European Parliament and the Council of June 8th, 2011 on the restriction of the use of certain hazardous substances in electrical and electronic equipment. REACh directive Directive 1907/2006/EU of the European Parliament and the Council of June 1st, 2007 regarding the Registration, Evaluation, Authorization and Restriction of Chemicals (REACh). RELIABILITY SYMBOL PARAMETER TEST CONDITIONS TYP(3) UNIT MTBF Mean time between failures MIL-HDBK-217F, 25°C 2000 ˙103 h PACKAGE SPECIFICATIONS ITEM PARAMETER TYP(3) UNIT Case Black flame-retardant and heat-resistant plastic (UL94 V-0) - - Potting material Silicone, UL94V-0 - - Weight 1.8 g Vibration 5g for 20 min MIL-STD-202, Method 204 NOTES (1) Min and Max are 100% production tested at 25° C. Limits over the operating temperature range are guaranteed through correlation using Statistical Quality Control (SQC) methods. (2) The human body model is a 100pF capacitor discharged through a 1.5 k Ω resistor into each pin. Test method is per JESD-22-114. (3) Typical numbers are valid at 25° C ambient temperature and represent statistically the utmost probability assuming the Gaussian distribution. (4) Depending on load current, see derating diagram. Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 6

WPME-FDSM - Fixed Step Down Regulator Module TYPICAL PERFORMANCE CURVES If not otherwise specified, the following conditions apply: V IN = 24V; V OUT = 3.3V (173950336), V OUT = 5V (173950536), VOUT = 12V (173951236), and V OUT = 15V (173951536); I OUT = 500mA; T AMB = 25°C. RADIATED AND CONDUCTED EMISSIONS EN55032 (CISPR-32) CLASS B COMPLIANT The 173950336, 173950536, 173951236 and 173951536 power modules are tested with a standard EMC configuration (1m wire between the module and the load) to give more realistic information about implementation in an application. The test setup is based on CISPR16 with the limit values CISPR32. Measured with module on a circuit board in a Fully Anechoic Room (FAR) at 3m antenna distance. TEST SETUP Input wire length:

• Radiated Emission: 160cm (80cm Horizontal + 80cm Vertical)
• Conducted Emission: 80cm Output wire length:
• Long wire (with input filter): 1m Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 7

WPME-FDSM - Fixed Step Down Regulator Module RADIATED AND CONDUCTED EMISSIONS - 173950336 -10 300 Radiated Em issions(dBµV/m ) Frequency (M Hz) Radiated Em issions 173950336 (3m Antenna Distance) V IN = 24V , V O UT = 5V , I LO AD 0.5A w ith input filter C F and C IN 4 x 4.7µF ( 885012209048 , L F 1µH ( 7447730 ), C O UT = 2 x 10µF ( 885012208069) Horizontal V ertical 1000 EN55032 Class A Lim it EN55032 Class B Lim it -10 0.15 1.5 Conducted Em issions (dBµV) Frequency (M Hz) Conducted Em issions 173950336 V IN = 24V , V O UT = 5V , I LO AD 0.5 A w ith input filter C F and C IN = 4 x 4.7µF ( 885012209048 , L F 1µH ( 7447730 ), C O UT = 2 x 10µF (885012208069 A verage Q uasi peak EN55032 Class B Q uasi Peak Lim it EN55032 Class B Average Lim it Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 8

WPME-FDSM - Fixed Step Down Regulator Module RADIATED AND CONDUCTED EMISSIONS - 173950536 -10 300 Radiated Em issions(dBµV/m ) Frequency (M Hz) Radiated Em issions 173950536 (3m Antenna Distance) V IN = 24V , V O UT = 5V , I LO AD 0.5 A w ith input filter C F and C IN 4 x 4.7µF ( 885012209048 , L F 1µH ( 7447730 ), C O UT = 2 x 10µF ( 885012208069) Horizontal V ertical 1000 EN55032 Class A Lim it EN55032 Class B Lim it -10 0.15 1.5 Conducted Em issions (dBµV) Frequency (M Hz) Conducted Em issions 173950536 V IN = 24V , V O UT = 5V , I LO AD 0.5 A w ith input filter C F and C IN 4 x 4.7µF ( 885012209048 , L F 1µH ( 7447730 ), C O UT = 2 x 10µF ( 885012208069) A verage Q uasi peak EN55032 Class B Q uasi Peak Lim it EN55032 Class B Average Lim it Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 9

WPME-FDSM - Fixed Step Down Regulator Module RADIATED AND CONDUCTED EMISSIONS - 173951236 -10 300 Radiated Emissions (dBµV/m) Frequency (MHz) Radiated Emissions 173951236 (3m Antenna Distance) V IN = 24V, V OUT = 12V, I LOAD 500m A with input filter C F and C IN = 4 x 4.7 µF ( 885012209048 , L F = 1 µH ( 7447730 Horizontal Vertical 1000 -10 0.15 1.5 Conducted Emissions (dBµV) Frequency (MHz) Conducted Emissions 17 395 V IN = 24V, V OUT = 12V, I LOAD 500m A with input filter C F and C IN 4 x 4.7µF (885012209048) , L F 1µH ( 7447730 Average Quasi peak Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 10

WPME-FDSM - Fixed Step Down Regulator Module RADIATED AND CONDUCTED EMISSIONS - 173951536 -10 300 Radiated Emissions (dBµV/m) Frequency (MHz) Radiated Emissions 173951536 (3m Antenna Distance) V IN = 24V, V OUT = 15V, I LOAD 500m A with input filter C F and C IN = 4 x 4.7 µF ( 885012209048 , L F = 1 µH ( 7447730 Horizontal Vertical 1000 -10 0.15 1.5 Conducted Emissions (dBµV) Frequency (MHz) Conducted Emissions 17 395 V IN = 24V, V OUT = 15V, I LOAD 500m A with input filter C F and C IN 4 x 4.7µF (885012209048) , L F 1µH ( 7447730 Average Quasi peak Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 11

WPME-FDSM - Fixed Step Down Regulator Module EFFICIENCY - 173950336 100 0.1 0.2 0.3 0.4 0.5 Efficiency [%] Output Current [A] 173950336 V OUT = 3.3V, T A = 25 C Vin = 4.75 Vin = 9V Vin = 12V Vin = 15V Vin = 18V Vin = 24V EFFICIENCY - 173950536 100 0.1 0.2 0.3 0.4 0.5 Efficiency [%] Output Current [A] 173950536 V OUT = 5V, T A = 25 C Vin = 6.5V Vin = 9V Vin = 12V Vin = 15V Vin = 18V Vin = 24V Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 12

WPME-FDSM - Fixed Step Down Regulator Module EFFICIENCY - 173951236 100 0.1 0.2 0.3 0.4 0.5 Efficiency [%] Output Current [A] 173951236 V OUT = 12V, T A = 25 C Vin = 15V Vin = 24V EFFICIENCY - 173951536 100 0.1 0.2 0.3 0.4 0.5 Efficiency [%] Output Current [A] 173951536 V OUT = 15V, T A = 25 C Vin = 19V Vin = 24V Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 13

WPME-FDSM - Fixed Step Down Regulator Module POWER DISSIPATION - 173950336 0.1 0.2 0.3 0.4 0.1 0.2 0.3 0.4 0.5 Power Dissipation [W] Output Current [A] 173950336 V OUT = 3.3V, T A = 25 C Vin = 4.75 Vin = 9V Vin = 12V Vin = 15V Vin = 18V Vin = 24V POWER DISSIPATION - 173950536 0.1 0.2 0.3 0.4 0.5 0.1 0.2 0.3 0.4 0.5 Power Dissipation [W] Output Current [A] 173950536 V OUT = 5V, T A = 25 C Vin = 6.5V Vin = 9V Vin = 12V Vin = 15V Vin = 18V Vin = 24V Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 14

WPME-FDSM - Fixed Step Down Regulator Module POWER DISSIPATION - 173951236 0.1 0.2 0.3 0.4 0.5 0.1 0.2 0.3 0.4 0.5 Power Dissipation [W] Output Current [A] 173951236 V OUT = 12V, T A = 25 C Vin = 15V Vin = 24V POWER DISSIPATION - 173951536 0.1 0.2 0.3 0.4 0.5 0.1 0.2 0.3 0.4 0.5 Power Dissipation [W] Output Current [A] 173951536 V OUT = 15V, T A = 25 C Vin = 19V Vin = 24V Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 15

WPME-FDSM - Fixed Step Down Regulator Module THERMAL DERATING 100 120 -40 -35 -30 -25 -20 -15 -10 Output Power [%] Ambient Temperature [ 17395xx36 Output Power Thermal Derating V IN = 24V, I OUT = 500mA C Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 16

WPME-FDSM - Fixed Step Down Regulator Module LOAD REGULATION - 173950336 3.298 3.3 3.302 3.304 3.306 3.308 3.31 3.312 0.1 0.2 0.3 0.4 0.5 Output Voltage [V] Output Current [A]

173950336 Load Regulation V

= 3.3V, T A = 25 C Vin = 9V Vin = 12V Vin = 15V Vin = 18V Vin = 24V LOAD REGULATION - 173950536 5.005 5.01 5.015 5.02 5.025 5.03 5.035 5.04 5.045 5.05 0.1 0.2 0.3 0.4 0.5 Output Voltage [V] Output Current [A]

173950536 Load Regulation V

= 5V, T A = 25 C Vin = 9V Vin = 12V Vin = 15V Vin = 18V Vin = 24V Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 17

WPME-FDSM - Fixed Step Down Regulator Module LOAD REGULATION - 173951236 12.04 12.05 12.06 12.07 12.08 12.09 12.1 12.11 12.12 12.13 12.14 0.1 0.2 0.3 0.4 0.5 Output Voltage [V] Output Current [A]

173951236 Load Regulation V

= 12V, T A = 25 C Vin = 15V Vin = 24V LOAD REGULATION - 173951536 15.01 15.02 15.03 15.04 15.05 15.06 15.07 15.08 0.1 0.2 0.3 0.4 0.5 Output Voltage [V] Output Current [A]

173951536 Load Regulation V

= 15V, T A = 25 C Vin = 19V Vin = 24V Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 18

WPME-FDSM - Fixed Step Down Regulator Module LINE REGULATION - 173950336 3.298 3.299 3.3 3.301 3.302 3.303 3.304 3.305 3.306 3.307 3.308 Output Voltage [V] Input Voltage [V]

173950336 Line Regulation V

= 3.3V, T A = 25 C 10% Load 100% Load LINE REGULATION - 173950536 4.990 4.995 5.000 5.005 5.010 5.015 5.020 Output Voltage [V] Input Voltage [V]

173950536 Line Regulation V

= 5V, TA = 25 C 10% Load 100% Load Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 19

WPME-FDSM - Fixed Step Down Regulator Module LINE REGULATION - 173951236 12.039 12.04 12.041 12.042 12.043 12.044 12.045 12.046 Output Voltage [V] Input Voltage [V]

173951236 Line Regulation V

= 12V, T A = 25 C 10% Load 100% Load LINE REGULATION - 173951536 14.986 14.988 14.99 14.992 14.994 14.996 14.998 15.002 15.004 15.006 Output Voltage [V] Input Voltage [V]

173951536 Line Regulation V

= 15V, T A = 25 C 10% Load 100% Load Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 20

WPME-FDSM - Fixed Step Down Regulator Module BLOCK DIAGRAM CIRCUIT DESCRIPTION The MagI 3C power modules 173950336, 173950536, 173951236 and 173951536 are all based on a non-synchronous step- down regulator with integrated MOSFET, free-wheeling diode, power inductor, input and output capacitors. The control scheme is based on a current mode (CM) regulation loop. The V OUT of the regulator is divided with the internal feedback resistor network and fed into the error amplifier, which compares this signal with the internal 0.75V reference. The error amplifier controls the on-time of a fixed frequency pulse width generator, which drives the MOSFET. The current mode architecture features a constant frequency during load steps. Only the on-time is modulated. It is internally compensated and stable with low ESR output capacitors. No external compensation network is required. This architecture supports fast transient response and very small output voltage ripple values (<50mV pp) are achieved. Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 21

WPME-FDSM - Fixed Step Down Regulator Module LIGHT LOAD OPERATION Under light load operation, the device switches from PWM mode to PFM mode. The load current where the transition between modes takes place can be estimated using the following formula: IOUT(DCM) = V OUT · (1 − V OUT V IN 2 · fSW · L (1) The following figures show the device working in PWM mode with continuous conduction operation (CCM). 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 Inductor Current [A] Time [µs] 17395xx36 Inductor Ripple Current V IN = 24V, I OUT = 500mA CCM Operation 1.4µs 710kHz 0.0 0.1 0.2 0.3 0.4 0.5 0.6 Inductor Current [A] Time [µs] 17395xx36 Inductor Ripple Current V IN = 24V, I OUT = 200mA CCM Operation 1.41µs 709kHz Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 22

WPME-FDSM - Fixed Step Down Regulator Module If the load current is further reduced, the device decreases the switching frequency in order to limit the energy transferred to the output (to both the output capacitor and load) maintaining regulation of the output voltage. The frequency reduction is shown in the figure below during PFM mode, with discontinuous operation (DCM). -0.1 0.0 0.1 0.2 0.3 0.4 Inductor Current [A] Time [µs] 17395xx36 Inductor Ripple Current V IN = 24V, I OUT = 50mA DCM Operation 1.46µs 685kHz -0.1 0.0 0.1 0.2 0.3 Inductor Current [A] Time [µs] 17395xx36 Inductor Ripple Current V IN = 24V, I OUT = 10mA DCM Operation 1.48µs 675kHz Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 23

WPME-FDSM - Fixed Step Down Regulator Module OUTPUT VOLTAGE RIPPLE The output voltage ripple depends on several parameters. The figure below shows the V OUT ripple at full load using a 22µF MLCC output capacitor. An output voltage ripple of less than 50mV pp is measured under the conditions indicated. 3.310 3.320 3.330 3.340 3.350 3.360 Output Voltage [V] Time [µs]

173950336 Output Voltage Ripple, V

= 24V, V OUT = 3.3V, I OUT = 500mA 6mV 5.020 5.025 5.030 5.035 5.040 5.045 5.050 Output Voltage [V] Time [µs]

173950536 Output Voltage Ripple, V

= 24V, V OUT = 5V, I OUT = 500mA 5mV Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 24

WPME-FDSM - Fixed Step Down Regulator Module 11.850 11.860 11.870 11.880 11.890 11.900 11.910 11.920 11.930 11.940 11.950 0.00 0.01 0.01 0.02 0.02 0.03 Output Voltage [V] Time [µs]

173951236 Output Voltage Ripple, V

= 24V, V OUT = 12V, I OUT = 500mA 30mV 14.960 14.970 14.980 14.990 15.000 15.010 15.020 15.030 15.040 0.00 5.00 10.00 15.00 20.00 25.00 30.00 35.00 40.00 Output Voltage [V] Time [µs]

173951536 Output Voltage Ripple, V

= 24V, V OUT = 15V, I OUT = 500mA 40mV Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 25

WPME-FDSM - Fixed Step Down Regulator Module PROTECTION FEATURES Soft-Start In order to prevent the output voltage from overshooting during start-up, a soft-start is internally set. The figures below show the start-up behavior of the power module with the 3.3V, 5V, 12V and 15V output voltage, respectively. V IN , V OUT [V] Time [ms]

173950336 Soft Start, V

= 12V, V OUT = 3.3V, I OUT = 500mA Input Voltage Output Voltage Soft Start V IN , V OUT [V] Time [ms]

173950536 Soft Start, V

= 12V, V OUT = 5V, I OUT = 500mA Input Voltage Output Voltage Soft Start Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 26

WPME-FDSM - Fixed Step Down Regulator Module V IN , V OUT [V] Time [ms]

173951236 Soft Start, V

= 24V, V OUT = 12V, I OUT = 500mA Input Voltage Output Voltage Soft Start V IN , V OUT [V] Time [ms]

173951536 Soft Start, V

= 24V, V OUT = 15V, I OUT = 500mA Input Voltage Output Voltage Soft Start Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 27

WPME-FDSM - Fixed Step Down Regulator Module Over Temperature Protection (OTP) Thermal protection helps to prevent catastrophic failures due to accidental device overheating. The junction temperature of the MagI 3C power module should not be allowed to exceed its maximum ratings. Thermal protection is implemented by an internal thermal shutdown circuit which activates at 170° C (typ.), causing the device to enter a low power standby state. In this state, the MOSFET remains off, causing V OUT to fall. When the junction temperature falls back below 158° C (typ.) (hysteresis is implemented) V OUT rises smoothly and normal operation resumes. The 173951236 and 173951536 power modules do not have thermal shutdown. Short Circuit Protection (SCP) The short circuit protection is realized via cycle by cycle current monitoring and a frequency foldback scheme where the off time of the high side switch increases relative to a decrease of the feedback voltage. For example, the power module switching frequency is divided by 2, 4 and 8 as the feedback voltage decreases to 75%, 50% and 25%, respectively. Recovery from short circuit protection mode occurs during the switching cycle following the removal of the short circuit condition. When the power module recovers from a short circuit condition, the soft-start will not activate. Therefore, an overshoot at the output voltage can be observed (see figure below). Under short circuit conditions, the input current is limited. 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 0.0 0.2 0.4 0.6 0.8 1.0 Output Voltage [V] Time [s]

173950336 Short Circuit Protection, V

= 24V, V OUT = 3.3V, I OUT = 500mA 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 0.0 0.2 0.4 0.6 0.8 1.0 Output Voltage [V] Time [s]

173950536 Short Circuit Protection, V

= 24V, V OUT = 5V, I OUT = 500mA Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 28

WPME-FDSM - Fixed Step Down Regulator Module 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 Output Voltage [V] Time [s]

173951236 Short Circuit Protection, V

= 24V, V OUT = 12V, I OUT = 500mA 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 Output Voltage [V] Time [s]

173951536 Short Circuit Protection, V

= 24V, V OUT = 15V, I OUT = 500mA Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 29

WPME-FDSM - Fixed Step Down Regulator Module Over Current Protection (OCP) For protection against load faults, the power module incorporates cycle by cycle current monitoring. During an overcurrent condition the output current is limited and the output voltage drops. When the overcurrent condition is removed, the output voltage returns to the nominal voltage. 0.0 0.5 1.0 1.5 2.0 0.0 1.0 2.0 3.0 4.0 Output Current [A] Output Voltage [V] Time [s]

173950336 Overcurrent Protection, V

= 24V, T A = 25 C Output Voltage Output Current 0.0 0.5 1.0 1.5 0.0 1.0 2.0 3.0 4.0 5.0 6.0 Output Current [A] Output Voltage [V] Time [s]

173950536 Overcurrent Protection, V

= 24V, T A = 25 C Output Voltage Output Current Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 30

WPME-FDSM - Fixed Step Down Regulator Module Output Current 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0 0.0 0.2 0.4 0.6 0.8 Output Current [A] Output Voltage [V] Time [s]

173951236 Overcurrent Protection, V

= 24V, T A = 25 C Output Voltage Output Voltage 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 0.0 0.2 0.4 0.6 0.8 Output Current [A] Output Voltage [V] Time [s]

173951536 Overcurrent Protection, V

= 24V, T A = 25 C Output Voltage Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 31

WPME-FDSM - Fixed Step Down Regulator Module LAYOUT RECOMMENDATION The layout above has been evaluated to provide the optimal performance in terms of transient response, efficiency, ripple and EMI. The design footprint can be reduced at the expense of performance in these parameters. The following recommendation should be followed when designing the layout: 1. The input and output capacitors should be placed as close as possible to the module pins. 2. The input filter should be placed close to the input capacitors of the module. Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 32

WPME-FDSM - Fixed Step Down Regulator Module Recommended External Circuit for Best Performance C V IN C VIN GND VOUT Module GND L V OUT GND C C Input Filter Output Filter (Cin)(Cf) (Lf) (Cout) (Cout) The 17395xx36 family integrates both the input and output capacitors. It is also recommended to use two 10µF input capacitors for 173950336 and 173950536 or four 4.7µF input capacitors for 173951236 and 173951536, C1 and C2, for high impedance input wires or traces and two 10µF output capacitor, C3 and C4, for applications where a low output voltage ripple is required. Bill of Materials (173950336, 173950536) Symbol Description Filter Quantity Order Code Manufacturer U1 MagI3C Power Module (not mounted) 1 17395xx36 Würth Elektronik Filter inductor, 1µH, PD2 family, ISAT=5.72A, I R=4A Input 1 7447730 Würth Elektronik C1, C 2 Aluminum capacitor 10µF/63V Input 2 875115852001 Würth Elektronik C3, C 4 Ceramic chip capacitor 22µF/25V X5R, 1210 Output 2 885012109014 Würth Elektronik Bill of Materials (173951236, 173951536) Symbol Description Filter Quantity Order Code Manufacturer U1 MagI3C Power Module (not mounted) 1 17395xx36 Würth Elektronik Filter inductor, 1µH, PD2 family, ISAT=5.72A, I R=4A Input 1 7447730 Würth Elektronik C1 Ceramic chip capacitor 4.7µF/50V Input 2 885012209048 Würth Elektronik C2 Ceramic chip capacitor 4.7µF/50V 2 885012209048 Würth Elektronik C3, C 4 Ceramic chip capacitor 22µF/25V X5R, 1210 Output 2 885012109014 Würth Elektronik Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 33

WPME-FDSM - Fixed Step Down Regulator Module Generating Negative Output Voltage Many industrial applications require negative voltages. The 17395xx36 family can easily provide a negative voltage using the circuit shown below. The module VOUT pin is attached to the application ground and the module GND pin is used to provide the output voltage. For low output voltage ripple, it is recommended to use an additional 22µF external capacitor at the output of the module. The 173950336 power module is not designed to be operated with a negative output voltage. VIN GND VOUT GND V OUT 17395 xx C IN V IN GND µF C OUT µF For additional information, please refer to the Application Note ANS007b. Operating Conditions for Generating Negative Output Voltage: Part Number Minimum Vin (V) Maximum Vin (V) Maximum Iout (-mA) Maximum Cout (µF) 173950536 7 31 300 330173951236 8 24 150 173951536 8 21 150 Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 34

WPME-FDSM - Fixed Step Down Regulator Module Generating Complementary Output Voltage Another common requirement in industrial applications is to provide a complementary voltage (e.g. ±5V). The circuit below shows how this target can be achieved simply combining one of the 17395xx36 family used in a standard configuration (delivering a positive output voltage) with the above mentioned solution for negative voltages. For low output voltage ripple, it is recommended to use an additional 22µF external capacitor at the output of the module. The 173950336 power module is not designed to be operated with a negative output voltage. VIN GND VOUT GND V OUT 17395 xx C IN V IN GND µF VIN VOUT GND V OUT 17395 xx GND Complementary Output Voltage C OUT µF C OUT µF C IN µF Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 35

WPME-FDSM - Fixed Step Down Regulator Module WA VE SOLDER PROFILE Profile Feature Old standard (Pb) New (Pb-free) Time within peak temperature t p 10s 10s Average ramp-up rate 200°C/s 200°C/s Final preheat temperature Ts 130°C/s 130°C/s Peak temperature T p +235°C/s +260°C/s Ramp-down rate -5°C/s -5°C/s Heating rate during preheat 4°C/s 4°C/s Wave Solder Diagram: Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 36

WPME-FDSM - Fixed Step Down Regulator Module PHYSICAL DIMENSIONS Bottom view All dimensions in mm Tolerances ±0,1mm unless otherwise specified Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 37

WPME-FDSM - Fixed Step Down Regulator Module RECOMMENDED DRILL HOLES TUBE Dimension L W H Tolerance typ. typ. typ. Value 528mm 16.9mm 9.6mm Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 38

WPME-FDSM - Fixed Step Down Regulator Module DOCUMENT HISTORY Revision Date Description Comment

1.0 May 2019 Initial data sheet release

2.0 September 2021 Added 173951236 and 173951536 family

3.0 May 2022 PCN

1. Corrected absolute maximum table parameters description for V esd. (page 5) 2. Updated front page drawing. (page 3. Updated pinout drawing to include pin 1 marking. (page 2) 4. Updated physical dimensions drawings to include pin 1 marking. (page 38) Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 39

WPME-FDSM - Fixed Step Down Regulator Module CAUTIONS AND WARNINGS The following conditions apply to all goods within the product series of MagI 3C of Würth Elektronik eiSos GmbH & Co. KG: General:

• This electronic component is designed and manufactured for use in general electronic equipment.
• Würth Elektronik must be asked for written approval (following the PPAP procedure) before incorporating the components into any equipment in fields such as military, aerospace, aviation, nuclear control, submarine, transportation (automotive control, train control, ship control), transportation signal, disaster prevention, medical, public information network, etc. where higher safety and reliability are especially required and/or if there is the possibility of direct damage or human injury.
• Electronic components that will be used in safety-critical or high-reliability applications, should be pre-evaluated by the customer.
• The component is designed and manufactured to be used within the datasheet specified values. If the usage and operation conditions specified in the datasheet are not met, the component may be damaged or dissolved.
• Do not drop or impact the components as material of the body, pins or termination may flake apart.
• Würth Elektronik products are qualified according to international standards, which are listed in each product reliability report. Würth Elektronik does not warrant any customer qualified product characteristics beyond Würth Elektronik’s specifications, for its validity and sustainability over time.
• All technical specifications for standard products also apply to customer specific products.
• Customer acknowledges and agrees that it is solely responsible for compliance with all legal, regulatory and safety- related requirements concerning its products, and any use of Würth Elektronik eiSos GmbH & Co. KG components in its applications, notwithstanding any applications-related information or support that may be provided by Würth Elektronik eiSos GmbH & Co. KG. Customer represents and agrees that it has all the necessary expertise to create and implement safeguards which anticipate dangerous consequences of failures, monitor failures and their consequences lessen the likelihood of failures that might cause harm and take appropriate remedial actions. Customer will fully indemnify Würth Elektronik eiSos and its representatives against any damages arising out of the use of any Würth Elektronik eiSos GmbH & Co. KG components in safety-critical applications. Product specific: Soldering:
• The solder profile must comply with the technical product specifications. All other profiles will void the warranty.
• All other soldering methods are at the customer’s own risk. Cleaning and Washing:
• Residual washing varnish agent that is used during the production to clean the application might change the characteristics of the body, pins or termination. The washing varnish agent may have a negative effect on the long term function of the component.
• Using a brush during the cleaning process may break the component. Therefore, we do not recommend using a brush during the PCB cleaning process. Potting and Coating:
• If the component is potted in the customer application, the potting material might shrink or expand during and after hardening. Shrinking could lead to an incomplete seal, allowing contaminants into the component. Expansion could damage the components or parts of it. We recommend a manual inspection after potting to avoid these effects.
• Conformal coating may affect the product performance. Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 40

WPME-FDSM - Fixed Step Down Regulator Module Storage Conditions:

• A storage of Würth Elektronik products for longer than 12 months is not recommended. Within other effects, the terminals may suffer degradation, resulting in bad solderability. Therefore, all products shall be used within the period of 12 months based on the day of shipment.
• Do not expose the components to direct sunlight.
• The storage conditions in the original packaging are defined according to DIN EN 61760-2.
• For a moisture sensitive component, the storage condition in the original packaging is defined according to IPC/JEDEC- J-STD-033. It is also recommended to return the component to the original moisture proof bag and reseal the moisture proof bag again.
• ESD prevention methods need to be followed for manual handling and processing by machinery.
• The storage conditions stated in the original packaging apply to the storage time and not to the transportation time of the components. Packaging:
• The packaging specifications apply only to purchase orders comprising whole packaging units. If the ordered quantity exceeds or is lower than the specified packaging unit, packaging in accordance with the packaging specifications cannot be ensured. Handling:
• Violation of the technical product specifications such as exceeding the absolute maximum ratings will void the warranty and also the conformance to regulatory requirements.
• The edge castellation is designed and made for prototyping, i.e. hand soldering purposes, only.
• The applicable country regulations and specific environmental regulations must be observed.
• Do not disassemble the component. Evidence of tampering will void the warranty.
• The temperature rise of the component must be taken into consideration. The operating temperature is comprised of ambient temperature and temperature rise of the component. The operating temperature of the component shall not exceed the maximum temperature specified.
• Direct mechanical impact to the component must be prevented as the material of the body, pins or termination could flake or, in the worst case, could break. As these devices are sensitive to electrostatic discharge, proper IC Handling Procedures must be followed. These cautions and warnings comply with the state of the scientific and technical knowledge and are believed to be accurate and reliable. However, no responsibility is assumed for inaccuracies or incompleteness. Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 41

WPME-FDSM - Fixed Step Down Regulator Module IMPORTANT NOTES General Customer Responsibility Some goods within the product range of Würth Elektronik eiSos GmbH & Co. KG contain statements regarding general suitability for certain application areas. These statements about suitability are based on our knowledge and experience of typical requirements concerning the areas, serve as general guidance and cannot be estimated as binding statements about the suitability for a customer application. The responsibility for the applicability and use in a particular customer design is always solely within the authority of the customer. Due to this fact it is up to the customer to evaluate, where appropriate to investigate and decide whether the device with the specific product characteristics described in the product specification is valid and suitable for the respective customer application or not. Accordingly, the customer is cautioned to verify that the datasheet is current before placing orders. Customer Responsibility Related to Specific, in Particular Safety-Relevant, Applications It has to be clearly pointed out that the possibility of a malfunction of electronic components or failure before the end of the usual lifetime cannot be completely eliminated in the current state of the art, even if the products are operated within the range of the specifications. In certain customer applications requiring a very high level of safety and especially in customer applications in which the malfunction or failure of an electronic component could endanger human life or health it must be ensured by most advanced technological aid of suitable design of the customer application that no injury or damage is caused to third parties in the event of malfunction or failure of an electronic component. Best Care and Attention Any product-specific notes, warnings and cautions must be strictly observed. Any disregard will result in the loss of warranty. Customer Support for Product Specifications Some products within the product range may contain substances which are subject to restrictions in certain jurisdictions in order to serve specific technical requirements. Necessary information is available on request. In this case the field sales engineer or the internal sales person in charge should be contacted who will be happy to support in this matter. Product R&D Due to constant product improvement product specifications may change from time to time. As a standard reporting procedure of the Product Change Notification (PCN) according to the JEDEC-Standard we inform about minor and major changes. In case of further queries regarding the PCN, the field sales engineer or the internal sales person in charge should be contacted. The basic responsibility of the customer as per Section 1 and 2 remains unaffected. Product Life Cycle Due to technical progress and economical evaluation we also reserve the right to discontinue production and delivery of products. As a standard reporting procedure of the Product Termination Notification (PTN) according to the JEDEC- Standard we will inform at an early stage about inevitable product discontinuance. According to this we cannot guarantee that all products within our product range will always be available. Therefore it needs to be verified with the field sales engineer or the internal sales person in charge about the current product availability expectancy before or when the product for application design-in disposal is considered. The approach named above does not apply in the case of individual agreements deviating from the foregoing for customer-specific products. Property Rights All the rights for contractual products produced by Würth Elektronik eiSos GmbH & Co. KG on the basis of ideas, development contracts as well as models or templates that are subject to copyright, patent or commercial protection supplied to the customer will remain with Würth Elektronik eiSos GmbH & Co. KG. Würth Elektronik eiSos GmbH & Co. KG does not warrant or represent that any license, either expressed or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right relating to any combination, application, or process in which Würth Elektronik eiSos GmbH & Co. KG components or services are used. General Terms and Conditions Unless otherwise agreed in individual contracts, all orders are subject to the current version of the “General Terms and Conditions of Würth Elektronik eiSos Group”, last version available at www.we-online.com. Data Sheet version 3.0 © May 2022 www.we-online.com/powermodules 42