173010542

17395XX75 WURTH | Alldatasheet

Document overview

Manufacturer or author: Provided By alldatasheet.com(free datasheet download site)
PDF pages: 38

Technical content

WPME-FDSM - Fixed Step Down Regulator Module Maximum Input 74.5V / 500mA / Fixed Output 3.3V, 5V or 12V

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 an external input capacitor as well as a an input ﬁlter. The FDSM ensures fast time to market and low development costs. The module is specially suited for high transient 48V bus applications such as industrial motor drive control systems. 48V to 3.3V conversion achieves up to 81% efﬁciency. 48V to 5V conversion achieves up to 86% efﬁciency. 48V to 12V conversion achieves up to 91% efﬁciency. The standard THT (11.5 x 9 x 17.5mm) package allows for easy assembly. TYPICAL APPLICATIONS

Point-of-Load DC-DC applications from 12V, 15V, 18V, 24V, 36V and 48V industrial rails
48V rail motor drive control
48V rail sensor supply
48V rail logistics & automation applications
General purpose

FEATURES

Peak efﬁciency up to 95%
Current capability up to 500mA
Input voltage up to 74.5V
Minimum input voltage / output voltage: 9 Vin / 3.3 Vout (173950375)

9 Vin / 5 Vout (173950575)

18 Vin / 12 Vout (173951275)

No minimum load required
Partially integrated input and output capacitors
Low output voltage ripple (<40mV pp)
Internal soft-start
Thermal shutdown
Short circuit protection
Cycle by cycle current limit
Standard industrial SIP-3 pinout
Operating ambient temperature: -40°C to 85°C
RoHS & REACh compliant
Case and potting material UL 94 (ﬂammability testing) certiﬁed
Complies with EN55032 (CISPR-32) class B conducted and radiated emissions standard TYPICAL CIRCUIT DIAGRAM VIN GND VOUT Module VIN GND GND VOUT 1 3 CIN Data Sheet version 1.0 © January 2022 www.we-online.com/powermodules 1

WPME-FDSM - Fixed Step Down Regulator Module PINOUT (PACKAGE TYPE B) Marking 1 2 3 VIN GND VOUT Type B package (pins are located at the back) MARKING DESCRIPTION MARKING DESCRIPTION WE Würth Elektronik eiSos GmbH & Co. KG

78 Indicates compatibility with 78xx linear regulator

VV Output voltage (3.3V, 5V or 12V) 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 2x2.2µF/100V input capacitors. GND 2 Power Ground pin; reference for VIN and VOUT. VOUT 3 Power Regulated output voltage pin. There is no need for an external output capacitor. Data Sheet version 1.0 © January 2022 www.we-online.com/powermodules 2

WPME-FDSM - Fixed Step Down Regulator Module

ORDERING INFORMATION

ORDER CODE SPECIFICATIONS PACKAGE PACKAGING UNIT 173950375 74.5V / 500mA / 3.3Vout version Type B Tube with 43 pieces173950575 74.5V / 500mA / 5Vout version 173951275 74.5V / 500mA / 12Vout version PINOUT 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 173950336 36V / 500mA / 3.3Vout Tube with 43 pieces 173950536 36V / 500mA / 5Vout 173951236 36V / 500mA / 12Vout 173951536 36V / 500mA / 15Vout 173010335 36V / 1A / 3.3Vout 173010535 36V / 1A / 5Vout 173011235 36V / 1A / 12Vout 173011535 36V / 1A / 15Vout 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 1.0 © January 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 UNIT MIN(1) MAX(1) VIN Input pin voltage -0.3 90 V VOUT Output pin voltage, 3.3Vout / 5Vout versions -0.3 16 V Output pin voltage, 12Vout version -0.3 25 V Tstorage Assembled, non-operating storage temperature -55 125 ° C Vesd ESD Voltage (Human Body Model), according to EN61000-4-2 (2) -4 4 kV Data Sheet version 1.0 © January 2022 www.we-online.com/powermodules 4

WPME-FDSM - Fixed Step Down Regulator Module 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: VIN= 9V to 74.5V (173950375), VIN= 9V to 74.5V (173950575), VIN= 18V to 74.5V (173951275), IOUT= 0.5A(5), TA = 25°C, unless otherwise noted. Eceeding the values will negatively affect the reliability of the power module and is therefore not recommended. SYMBOL PARAMETER MIN(1) TYP(3) MAX(1) UNIT VIN Input Voltage (173950375) 9 - 74.5 V VIN Input Voltage (173950575) 9 - 74.5 V VIN Input Voltage (173951275) 18 - 74.5 V Ta Ambient temperature range -40 - 85 (4) °C IOUT Nominal output current - - 0.5 A COUT MAX Maximal output capacitance - - 100 µF Data Sheet version 1.0 © January 2022 www.we-online.com/powermodules 5

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= 48V, IOUT= 0.5A(5), TA = 25°C, unless otherwise noted. SYMBOL PARAMETER TEST CONDITIONS LIMIT UNIT MIN(1) TYP(3) MAX(1) Output Current ICL Current limit threshold VOUT = 3.3V - 1.1 - A VOUT = 5V - 1.2 - A VOUT = 12V - 0.9 - A Output Voltage VOUT Regulated output voltage 173950375 - 3.3 - V Regulated output voltage 173950575 - 5 - V Regulated output voltage 173951275 - 12 - V Line regulation IOUT = 0.5A -0.4 ±0.2 0.4 % Load Regulation 10% to 100% load -0.6 ±0.4 0.6 % Total output voltage regulation over input voltage range VOUT = 5V / 12V, IOUT = 0.5A -3 ±2 3 % No external COUT, 20MHz BWL Output voltage ripple VOUT = 3.3V, IOUT = 0.5A - 40 - mVpp VOUT = 5V / 12V, IOUT = 0.5A - 30 - mVpp Switching Frequency fSW Switching frequency VOUT = 3.3V IOUT = 0.5A - 166 - kHz VOUT = 5V IOUT = 0.5A - 250 - kHz VOUT = 12V IOUT = 0.5A - 400 - kHz Input Current IIN No load input current Operating, switching - 0.3 1 mA Efﬁciency η Efﬁciency, IOUT = 0.5A VIN = 9V, VOUT = 3.3V - 89 - % VIN = 48V, VOUT = 3.3V - 81 - % VIN = 9V, VOUT = 5V - 92 - % VIN = 48V, VOUT = 5V - 86 - % VIN = 18V, VOUT = 12V - 95 - % VIN = 48V, VOUT = 12V - 91 - % Data Sheet version 1.0 © January 2022 www.we-online.com/powermodules 6

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 5000 ·103 h PACKAGE SPECIFICATIONS CASE MATERIAL WEIGHT Part Number Material UL Number 3.8g17395xx75 Black plastic UL94V-0 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 1.0 © January 2022 www.we-online.com/powermodules 7

WPME-FDSM - Fixed Step Down Regulator Module TYPICAL PERFORMANCE CURVES If not otherwise speciﬁed, the following conditions apply: VIN = 48V; VOUT = 3.3V (173010335), VOUT = 5V (173010535) and VOUT = 12V (173011235); IOUT = 0.5A(5); TAMB = 25°C. RADIATED AND CONDUCTED EMISSIONS EN55032 (CISPR-32) CLASS B COMPLIANT The 173950375, 173950575 and 173951275 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 the applications. The test setup is based on CISPR16 with the limit values CISPR32. Measured with module on a testboard (see LAYOUT RECOMMENDATION) in a Fully Anechoic Room (FAR) at 3m antenna distance. TEST SETUP Input wire length (with input ﬁlter):

Radiated Emission: 160cm (80cm Horizontal + 80cm Vertical)
Conducted Emission: 80cm Output wire length:
Long wire: 1m Data Sheet version 1.0 © January 2022 www.we-online.com/powermodules 8

WPME-FDSM - Fixed Step Down Regulator Module RADIATED AND CONDUCTED EMISSIONS - 173950375 -10 300 Radiated Emissions (dBµV/m) Frequency (MHz) Radiated Emissions 173950375 (3m Antenna Distance) V IN = 48V, V OUT 0.5 A with input filter C F and C IN 4 x 2.2µF ( 885012209071 , L F 47µH ( 744773147 ), C OUT 2 x 22µF ( 885012109014) Horizontal Vertical 1000 = 3.3V, I EN55032 Class A Limit EN55032 Class B Limit LOAD -10 0.15 1.5 Conducted Emissions (dBµV) Frequency (MHz) Conducted Emissions 173950375 V IN = 48V, V OUT = 3.3V, I LOAD 0.5 A with input filter C F and C IN 4 x 2.2µF ( 885012209071 , L F 47µH ( 744773147 ), C OUT 4 x 22µF ( 885012109014) Average Quasi peak EN55032 Class B Quasi Peak Limit EN55032 Class B Average Limit Data Sheet version 1.0 © January 2022 www.we-online.com/powermodules 9

WPME-FDSM - Fixed Step Down Regulator Module RADIATED AND CONDUCTED EMISSIONS - 173950575 1000 -10 300 Radiated Emissions (dBµV/m) Frequency (MHz) Radiated Emissions 173950575 (3m Antenna Distance) V IN = 48V, V OUT = 5V, I LOAD 0.5 A with input filter C F and C IN 4 x 2.2µF ( 885012209071 , L F 47µH ( 744773147 ), C OUT 2 x 22µF ( 885012109014) Horizontal Vertical 1000 EN55032 Class A Limit EN55032 Class B Limit -10 0.15 1.5 Conducted Emissions (dBµV) Frequency (MHz) Conducted Emissions 173950575 V IN = 48V, V OUT = 5V, I LOAD 0.5 A with input filter C F and C IN 4 x 2.2µF ( 885012209071 , L F 47µH ( 744773147 ), C OUT 2 x 22µF ( 885012109014) Average Quasi peak EN55032 Class B Quasi Peak Limit EN55032 Class B Average Limit Data Sheet version 1.0 © January 2022 www.we-online.com/powermodules 10

WPME-FDSM - Fixed Step Down Regulator Module RADIATED AND CONDUCTED EMISSIONS - 173951275 1000 1000 -10 300 Radiated Emissions (dBµV/m) Frequency (MHz) Radiated Emissions 173951275 (3m Antenna Distance) V IN = 48V, V OUT = 12V, I LOAD 0.5 A with input filter C F and C IN 4 x 2.2µF ( 885012209071 , L F 47µH ( 744773147 ), C OUT 2 x 22µF ( 885012109014) Horizontal Vertical 1000 EN55032 Class A Limit EN55032 Class B Limit -10 0.15 1.5 Conducted Emissions (dBµV) Frequency (MHz) Conducted Emissions 173951275 V IN = 48V, V OUT = 12V, I LOAD 0.5 A with input filter C F and C IN 4 x 2.2µF ( 885012209071 , L F 47µH ( 744773147 ), C OUT 2 x 22µF ( 885012109014) Average Quasi peak EN55032 Class B Quasi Peak Limit EN55032 Class B Average Limit Data Sheet version 1.0 © January 2022 www.we-online.com/powermodules 11

WPME-FDSM - Fixed Step Down Regulator Module EFFICIENCY - 173950375 100 0.1 0.2 0.3 0.4 0.5 Efficiency [%] Output Current [A] 173950375 V OUT = 3.3V, T A = 25 C Vin = 9V Vin = 12V Vin = 18V Vin = 24V Vin = 36V Vin = 48V Vin = 60V Vin = 74.5V EFFICIENCY - 173950575 100 0.1 0.2 0.3 0.4 0.5 Efficiency [%] Output Current [A] 173950575 V OUT = 5V, T A = 25 C Vin = 9V Vin = 12V Vin = 18V Vin = 24V Vin = 36V Vin = 48V Vin = 60V Vin = 74.5V Data Sheet version 1.0 © January 2022 www.we-online.com/powermodules 12

WPME-FDSM - Fixed Step Down Regulator Module EFFICIENCY - 173951275 100 0.1 0.2 0.3 0.4 0.5 Efficiency [%] Output Current [A] 173951275 V OUT = 12V, T A = 25 C Vin = 18V Vin = 24V Vin = 36V Vin = 48V Vin = 60V Vin = 74.5V POWER DISSIPATION - 173950375 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 0.55 0.6 0.1 0.2 0.3 0.4 0.5 Power Dissipation [W] Output Current [A] 173950375 V OUT = 3.3V, T A = 25 C Vin = 9V Vin = 12V Vin = 18V Vin = 24V Vin = 36V Vin = 48V Vin = 60V Vin = 74.5V Data Sheet version 1.0 © January 2022 www.we-online.com/powermodules 13

WPME-FDSM - Fixed Step Down Regulator Module POWER DISSIPATION - 173950575 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 0.55 0.6 0.65 0.1 0.2 0.3 0.4 0.5 Power Dissipation [W] Output Current [A] 173950575 V OUT = 5V, T A = 25 C Vin = 9V Vin = 12V Vin = 18V Vin = 24V Vin = 36V Vin = 48V Vin = 60V Vin = 74.5V POWER DISSIPATION - 173951275 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0.1 0.2 0.3 0.4 0.5 Power Dissipation [W] Output Current [A] 173951275 V OUT = 12V, T A = 25 C Vin = 18V Vin = 24V Vin = 36V Vin = 48V Vin = 60V Vin = 74.5V Data Sheet version 1.0 © January 2022 www.we-online.com/powermodules 14

WPME-FDSM - Fixed Step Down Regulator Module THERMAL DERATING - 17395xx75 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.1 1.2 -40 -15 Relative Output Power Ambient Temperature [ 17395xx75 Output Power Thermal Derating V in = 48V, I OUT = 0.5A Data Sheet version 1.0 © January 2022 www.we-online.com/powermodules 15

WPME-FDSM - Fixed Step Down Regulator Module LOAD REGULATION - 173950375 3.298 3.3 3.302 3.304 3.306 3.308 3.31 3.312 3.314 0.1 0.2 0.3 0.4 0.5 Output Voltage [V] Output Current [A] 173950375 V OUT = 3.3V, T A = 25 C Vin = 9V Vin = 12V Vin = 18V Vin = 24V Vin = 36V Vin = 48V Vin = 60V Vin = 74.5V LOAD REGULATION - 173950575 4.99 5.01 5.02 5.03 5.04 0.1 0.2 0.3 0.4 0.5 Output Voltage [V] Output Current [A] 173950575 V OUT = 5V, T A = 25 C Vin = 9V Vin = 12V Vin = 18V Vin = 24V Vin = 36V Vin = 48V Vin = 60V Vin = 74.5V Data Sheet version 1.0 © January 2022 www.we-online.com/powermodules 16

WPME-FDSM - Fixed Step Down Regulator Module LOAD REGULATION - 173951275 11.92 11.925 11.93 11.935 11.94 11.945 11.95 0.1 0.2 0.3 0.4 0.5 Output Voltage [V] Output Current [A] 173951275 V OUT = 12V, T A = 25 C Vin = 18V Vin = 24V Vin = 36V Vin = 48V Vin = 60V Vin = 74.5V LINE REGULATION - 173950375 3.28 3.285 3.29 3.295 3.3 3.305 3.31 3.315 3.32 Output Voltage [V] Input Voltage [V] 173950375 V OUT = 3.3V, T A = 25 C Iout = 50mA Iout = 500mA Data Sheet version 1.0 © January 2022 www.we-online.com/powermodules 17

WPME-FDSM - Fixed Step Down Regulator Module LINE REGULATION - 173950575 5.03 5.032 5.034 5.036 5.038 5.04 5.042 5.044 5.046 Output Voltage [V] Input Voltage [V] 173950575 V OUT = 5V, T A = 25 C Iout = 50mA Iout = 500mA LINE REGULATION - 173951275 11.92 11.925 11.93 11.935 11.94 11.945 11.95 11.955 11.96 Output Voltage [V] Input Voltage [V] 173951275 V OUT = 12V, T = 25°C Iout = 50mA Iout = 500mA A Data Sheet version 1.0 © January 2022 www.we-online.com/powermodules 18

WPME-FDSM - Fixed Step Down Regulator Module BLOCK DIAGRAM VOUT PWM Controller Driver Protection Circuitry COUT VIN UVLO CIN 68 µH (173950375 / 173950575) VREF GND 1.2V Power Module 17395xx75 GND CBoot R FBT RFBB 1µF 10µF GND GND VIN VOUTVIN 120µH (173951275) Thermal Shutdown GND GND CIRCUIT DESCRIPTION The MagI3C Power Module 17395xx75 is based on a synchronous step-down regulator with integrated IC, power inductor, input and output capacitors. The control scheme is based on a constant on-time (COT) regulation loop. The VOUT of the regulator is divided with the internal feedback resistor network and fed into the comparator, which compares this signal with the internal 1.2V reference. The comperator controls the off-time of a ﬁxed frequency pulse width generator, which drives the MOSFET. To achieve a regulated output voltage the off-time is modulated. It is 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 (<40mVpp) are achieved. Data Sheet version 1.0 © January 2022 www.we-online.com/powermodules 19

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(Transition) = VOUT · (1 − V OUT V IN 2 · fSW · L (1) The following ﬁgures show the device working in PWM mode with continuous conduction operation (CCM). The inductor ripple current in all diagrams is shown with AC coupled measurement values. -0.1 -0.05 0.05 0.1 0.15 0.2 0.25 0.3 Inductor Current [A] Time [µs] 173950375 V IN = 48V, V OUT = 3.3V, I OUT = 500mA, T A = 25 C CCM Operation 6µs → 166kHz -0.1 -0.05 0.05 0.1 0.15 0.2 0.25 0.3 Inductor Current [A] Time [µs] 173950375 V IN = 48V, V OUT = 3.3V, I OUT = 250mA, T A = 25 C CCM Operation 6µs → 166kHz Data Sheet version 1.0 © January 2022 www.we-online.com/powermodules 20

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). The inductor current is shown with -0.1 -0.05 0.05 0.1 0.15 0.2 0.25 0.3 Inductor Current [A] Time [µs] 173950375 V IN = 48V, V OUT = 3.3V, I OUT = 100mA, T A = 25 C DCM Operation 7µs → 142kHz -0.1 -0.05 0.05 0.1 0.15 0.2 0.25 0.3 Inductor Current [A] Time [µs] 173950375 V IN = 48V, V OUT = 3.3V, I OUT = 50mA, T A = 25 C DCM Operation 20.5µs → 48.8kHz Data Sheet version 1.0 © January 2022 www.we-online.com/powermodules 21

WPME-FDSM - Fixed Step Down Regulator Module OUTPUT VOLTAGE RIPPLE The output voltage ripple depends on several parameters. The ﬁgure below shows the VOUT ripple at full load using no external output capacitor. An output voltage ripple of less than 50mV pp is measured under the conditions indicated. To reduce the output ripple further it is recommended to add two 22µF MLCC output capacitor. -30 -20 -10 Output Voltage Ripple [mV] Time [µs] 173950375 V IN = 48V, V OUT = 3.3V, I OUT = 500mA, T A = 25 C Data Sheet version 1.0 © January 2022 www.we-online.com/powermodules 22

WPME-FDSM - Fixed Step Down Regulator Module -20 -15 -10 Output Voltage Ripple [mV] Time [µs] 173950575 V IN = 48V, V OUT = 5V, I OUT = 500mA, T A = 25 C -10 Output Voltage Ripple [mV] Time [µs] 173951275 V IN = 48V, V OUT = 12V, I OUT = 500mA, T A = 25 C Data Sheet version 1.0 © January 2022 www.we-online.com/powermodules 23

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 which takes approximately 2ms. The ﬁgures below show the start-up behavior of the power module with the 3.3V, 5V and 12V output voltage, respectively. Input & Output Voltage [V] Time [ms] 173950375 V IN = 24V, V OUT = 3.3V, I OUT = 500mA, T A = 25 C Soft Start Data Sheet version 1.0 © January 2022 www.we-online.com/powermodules 24

WPME-FDSM - Fixed Step Down Regulator Module Input & Output Voltage [V] Time [ms] 173950575 V IN = 24V, V OUT = 5V, I OUT = 500mA, T A = 25 C Soft Start Input & Output Voltage [V] Time [ms] 173951275 V IN = 24V, V OUT = 12V, I OUT = 500mA, T A = 25 C Soft Start Data Sheet version 1.0 © January 2022 www.we-online.com/powermodules 25

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 MagI3C power module should not be allowed to exceed its maximum ratings. Thermal protection is implemented by an internal thermal shutdown circuit which activates at 155° C (typ.), causing the device to enter a low power standby state. In this state, the MOSFET remains off, causing VOUT to fall. When the junction temperature falls back below 125° C (typ.) (hysteresis is implemented) VOUT rises smoothly and normal operation resumes. 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, it is possible that an overshoot at the output voltage can be observed. Under short circuit conditions, the input current is limited. 0.5 1.5 2.5 3.5 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.1 1.2 Output Voltage [V] Time [s] 173950375 V IN = 48V, V OUT = 3.3V, I OUT = 500mA, T A = 25 C Data Sheet version 1.0 © January 2022 www.we-online.com/powermodules 26

WPME-FDSM - Fixed Step Down Regulator Module 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.1 1.2 Output Voltage [V] Time [s] 173950575 V IN = 48V, V OUT = 5V, I OUT = 500mA, T A = 25 C 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.1 1.2 Output Voltage [V] Time [s] 173951275 V IN = 48V, V OUT = 12V, I OUT = 500mA, T A = 25 C Data Sheet version 1.0 © January 2022 www.we-online.com/powermodules 27

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 over current 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. 0.2 0.4 0.6 0.8 1.2 1.4 Output Current [A] Output Voltage [V] Time [s] 173950375 V IN = 48V, V OUT = 3.3V, T A = 25 C Data Sheet version 1.0 © January 2022 www.we-online.com/powermodules 28

WPME-FDSM - Fixed Step Down Regulator Module 0.2 0.4 0.6 0.8 1.2 1.4 1.6 Output Current [A] Output Voltage [V] Time [s] 173950575 V IN = 48V, V OUT = 5V, T A = 25 C 0.2 0.4 0.6 0.8 1.2 Output Current [A] Output Voltage [V] Time [s] 173951275 V IN = 48V, V OUT = 12V, T A = 25 C Data Sheet version 1.0 © January 2022 www.we-online.com/powermodules 29

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 solution size can be reduced at the expense of performance in these parameters. The following recommendation should be followed when designing the layout: 1. The input capacitors should be placed as close as possible to the VIN pin of the device. 2. The output capacitors should be placed as close as possible to the VOUT pin of the device. Data Sheet version 1.0 © January 2022 www.we-online.com/powermodules 30

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 C C (CIN)(CIN)(Cf)(Cf) (Lf) (COUT) (COUT) For optimal EMI performance, two ﬁlter capacitors, C1 and C2, two input capacitors, C3 and C4 and two output capacitors, C5 and C6, are recommended. For optimal electrical performance, two input capacitors C3 and C4, and two output capacitors, C5 and C6, are recommended. Bill of Materials Symbol Description Function Quantity Order Code Manufacturer U1 MagI3C Power Module Power supply 1 17395xx75 WE Filter inductor, 47µH, PD2 family, ISAT = 0.68A, IR = 0.77A Input Filter 1 744773147 WE C1, C2 Ceramic chip capacitor 2.2µF/100V X7R, 1210 Input Filter 2 885012209071 WE C3, C4 Ceramic chip capacitor 2.2µF/100V X7R, 1210 Input Filter / Electrical Performance 2 885012209071 WE C5, C6 Ceramic chip capacitor 22µF/25V X5R, 1210 Output Filter / Electrical Performance 2 885012109014 WE Data Sheet version 1.0 © January 2022 www.we-online.com/powermodules 31

WPME-FDSM - Fixed Step Down Regulator Module GENERATING MULTIPLE OUTPUT VOLTAGES A common requirement in industrial applications is to provide multiple supply voltages (e.g. 3.3V / 5V / 12V). The circuit below shows how this can be achieved by connecting the required members of the 17395xx75 family in parallel, all with the same source. To keep the output ripple of all the modules low, it is recommended to use an additional 44F of output capacitance at the output of each module. When using multiple modules connected to a single DC bus voltage it is recommended to decouple the individual module inputs by using decoupling LC ﬁlters. An LC ﬁlter at the input reduces the likelihood of oscillations due to parasitics of the layout as well as preventing the input ripple of the modules from affecting each other. The recommended EMI ﬁlter (see Recommended External Circuit for Best Performance) offers a good starting point for the decoupling ﬁlter design. Further evaluation of the ﬁlter and module within the application system in necessary to determine the best component values for optimal performance. VIN VOUT GND 1 3 GND VOUT1 173950375 CIN VIN GND 2x2.2µF VIN VOUT GND 1 3 VOUT2 173950575 GND Multiple output voltages CIN 2x2.2µF VIN VOUT GND 1 3 VOUT3 173951275 GND CIN 2x2.2µF 3.3V 12V COUT 2x22µF COUT 2x22µF COUT 2x22µF Data Sheet version 1.0 © January 2022 www.we-online.com/powermodules 32

WPME-FDSM - Fixed Step Down Regulator Module WAVE SOLDER PROFILE Proﬁle Feature Old standard (Pb) New (Pb-free) Time within peak temperature tp 10s 10s Average ramp-up rate 200°C/s 200°C/s Final preheat temperature Ts 130°C/s 130°C/s Peak temperature Tp +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 Max number of allowed cycles in wave soldering: 2 cycles Wave Solder Diagram: Manual Soldering 1. Maximum soldering temperature should not exceed 365°C ±15°C 2. Maximum soldering time: max. 3 seconds Data Sheet version 1.0 © January 2022 www.we-online.com/powermodules 33

WPME-FDSM - Fixed Step Down Regulator Module PHYSICAL DIMENSIONS 11,5 ±0,25 0,5 ±0,25 0,5 ±0,1 5,08 ±0,25 0,3 ±0,1 17,5 ±0,25 4,1 ±0,1 123 Marking Data Sheet version 1.0 © January 2022 www.we-online.com/powermodules 34

WPME-FDSM - Fixed Step Down Regulator Module RECOMMENDED DRILL HOLES 5,08 O 1,0321 TUBE 16,9 9,6 4,9 0,7 12,4 All dimensions in mm Tolerances ±0,1mm unless otherwise speciﬁed Data Sheet version 1.0 © January 2022 www.we-online.com/powermodules 35

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

1.0 November 2021 Initial data sheet release

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:

All recommendations according to the general technical speciﬁcations of the data-sheet have to be complied with.
The usage and operation of the product within ambient conditions which probably alloy or harm the component surface has to be avoided.
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 eiSos products are qualiﬁed according to international standards, which are listed in each product reliability report. Würth Elektronik eiSos does not warrant any customer qualiﬁed product characteristics beyond Würth Elektronik eiSos’s speciﬁcations, for its validity and sustainability over time.
The responsibility for the applicability of the customer speciﬁc products and use in a particular customer design is always within the authority of the customer. 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: 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. The same statement is valid for all software sourcecode and ﬁrmware parts contained in or used with or for products in the wireless connectivity and sensor product range of Würth Elektronik eiSos GmbH & Co. KG. In certain customer applications requiring a 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. DISCLAIMER This electronic component has been designed and developed for usage in general electronic equipment only. This product is not authorized for use in equipment where a higher safety standard and reliability standard is especially required or where a failure of the product is reasonably expected to cause severe personal injury or death, unless the parties have executed an agreement speciﬁcally governing such use. Moreover Würth Elektronik eiSos GmbH & Co. KG products are neither designed nor intended for use in areas such as military, aerospace, aviation, nuclear control, submarine, transportation (automotive control, train control, ship control), transportation signal, disaster prevention, medical, public information network etc. Würth Elektronik eiSos GmbH & Co. KG must be informed about the intent of such usage before the design-in stage. In addition, sufﬁcient reliability evaluation checks for safety must be performed on every electronic component which is used in electrical circuits that require high safety and reliability functions or performance. 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 1.0 © January 2022 www.we-online.com/powermodules 37

WPME-FDSM - Fixed Step Down Regulator Module B IMPORTANT NOTES The following conditions apply to all goods within the product range of Würth Elektronik eiSos GmbH & Co. KG: 1. 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. 2. 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. 3. Best Care and Attention Any product-speciﬁc notes, warnings and cautions must be strictly observed. Any disregard will result in the loss of warranty. 4. 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. 5. 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. 6. 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. 7. 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. 8. 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 1.0 © January 2022 www.we-online.com/powermodules 38

Summary

WPME-FDSM - Fixed Step Down Regulator Module Maximum Input 74.5V / 500mA / Fixed Output 3.3V, 5V or 12V version 1.0

Description