LSM2-T

LSM2-T MURATA | Alldatasheet

Document overview

• Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
• PDF pages: 12

Technical content

DOSA-SMT, 30A POL DC/DC Converters For full details go to www.murata-ps.com/rohs www.murata-ps.com Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000 Typical unit MDC_LSM2_T30_D12 Series.B11 Page 1 of 12

FEATURES

n Non-isolated Point-of-Load (POL) converter, ideal for distributed bus applications n Optimized for CPUs, DSPs and program- mable logic - FPGAs, ASICs n 30 Amps maximum output current n User-selectable output voltage, 0.8Vdc to 5.0Vdc via trim resistor or voltage input n Wide input range 6Vdc to 14Vdc (Vo u t <3.6V) n Selectable phased start-up sequencing and tracking n Excellent efficiency over output voltage range n Two models available, with or without addi- tional ground/thermal pads n Fast settling, high di/dt slew rate, low output noise n Extensive self protection plus 'hiccup' short circuit auto recovery n Designed for full safety and emission certification Today’s high performance CPU and programma- ble logic devices demand superior performance from their power source. The LSM2-T/30-D12 series DC/DC converters offer up to 30 Amps continuous output power with a user-selectable output of 0.8 to 3.6 Volts. 25 Amps output is available up to 5.0 Vo u t. This tiny converter is ideal for distributed bus architectures (DBA) and intermediate power busses with an input range of 6 to 14 Volts DC. The pinout, trim system and mechanical footprint is compatible with the DOSA (www.dosapower.com) industry standard. To ensure very high performance of powered logic systems, the LSM2-T/30-D12 features low output noise, high slew rates (20 Amps/µSec.), fast transient response (25 µSec settling) and tight line and load regulation. Many logic devices require controlled start up and tracking capabili- ties. The LSM2-T/30-D12 includes a Sequence/ Track function and prebias protection against external startup voltages. Other DBA features include no additional external components required, stable no-load operation, up to 10,000 µF output load capacitance and no reverse conduction. System functions offer a remote On/Off con - trol, two additional ground pins (optional) and a load Sense input. Agency certifications include UL/EN 60950-1, CAN/CSA-C22.2 60950-1, IEC 60950-1, and FCC emissions characterization. The automated surface mount assembly is fully RoHS (Reduction of Hazardous Substances) lead-free construction and attachment. The LSM2-T/30-D12 mounts to its host carrier board via reflow-soldered PCB pads. The extraordinary efficiency means low heat and freedom from expensive, bulky heat sinks. A wealth of protection features include input under- voltage shutdown, output overcurrent current lim- iting, short circuit protection and overtemperature shutdown/recycle. SIMPLIFIED SCHEMATIC +INPUT COMMON PWM CONTROLLER CURRENT SENSE REFERENCE & ERROR AMP VCC ON/OFF CONTROL VTRACK / SEQUENCE INPUT VOUT TRIM +OUTPUT +SENSE COMMON

DESCRIPTION

*One phase of two is shown. Lead-free construction/attach Pb Typical topology is shown. Additional ground/thermal pads Ḥ

DOSA-SMT, 30A POL DC/DC Converters Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000www.murata-ps.com MDC_LSM2_T30_D12 Series.B11 Page 2 of 12 PERFORMANCE SPECIFICATIONS AND ORDERING GUIDE  Model Family Output Input Efficiency Package (Case/ Pinout) VOUT (Volts) IOUT  (Amps) Power (Watts) R/N (mVp-p) Regulation (max.) VIN Nom. (Volts) Range  (Volts) IIN  (mA/A)Typ. Max. Line Load Min. Typ. PART NUMBER STRUCTURE  Typical @ Ta=+25°C. under nominal line voltage and full-load conditions unless noted. Nominal output is +5 Volts.  Ripple/Noise (R/N) is tested/specified over a 5 Hz to 20 MHz bandwidth and may be reduced by adding external filtering. R/N is shown at Vo u t <= 2.5 Volts.  These devices have no minimum load requirements and will regulate under no-load conditions. Regulation specifications describe the output voltage deviation as the line voltage or load is varied from its nominal/midpoint value to either extreme.  Nominal line voltage, no-load/full-load conditions.  LSM2-T/30-D12 efficiencies are shown at Vo u t = 5 Volts. ➆ If Vo u t >3.63V, input range is 7-14V. Maximum Rated Output Current in Amps Non-Isolated SMT Output Configuration: L = Unipolar Low Voltage Nominal Output Voltage: 0.8-5.0 Volts L SM2 - / D12-T 30 R Input Voltage Range: D12 = 6-14 Volts (12V nominal) See note 7 above. Additional Grounds: Blank = Omitted R = Installed C RoHS-6 compliant MECHANICAL SPECIFICATIONS Case C71 INPUT/OUTPUT CONNECTIONS P72 Pad Function

1 On/Off Control

3 Sequence/Track In

4 Common

6 Trim

7 Sense In

8 Not used

• Additional Ground (optional) Dimensions are in inches (mm) * * 5 6 7 8 0.36 (9.14) 0.062 (1.57) 1.30 (33.02) 0.53 (13.46) 0.48 (12.19) 1.177 (29.90) 0.430 (10.92) 0.048 (1.22) 0.075 (1.91) 0.120 (30.5) BOTTOM VIEW 0.027 (0.68) 0.120 (3.05) 0.155 (3.94) 0.114 (2.9) 0.950 (24.13) 5 EQ. SP . @ 0.190 (4.83) Component locations are typical.

DOSA-SMT, 30A POL DC/DC Converters Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000www.murata-ps.com MDC_LSM2_T30_D12 Series.B11 Page 3 of 12 RECOMMENDED PAD LAYOUT GND (-H) 0.000 (0.00) 0.107 (2.72) 0.297 (7.54) 0.487 (12.37) 0.677 (17.20) 0.867 (22.02) 1.057 (26.85) 1.177 (29.90) 1.204 (30.58) TRIMSENSE Vout GND SEQ ON/OFF Vin 0.405 (10.29) 0.120 (3.05) 0.089 (2.26) 0.000 (0.00) 0.025 (0.64) GND (-H) Optional Additional Ground Pad Size: 0.095 x 0.082 (2.41 x 2.08) Not Used Optional Additional Ground Pad Size: 0.095 x 0.082 (2.41 x 2.08) Dimensions are in inches (mm) Additional Ground/Thermal Pads (“R” models) The LSM2-T/30-D12 is optionally available with two additional ground pads for increased current handling and better heat transfer. These are indicated with the “R” designator in the model number, LSM2-T/30-D12R-C. MPS recommends that users lay out their PC boards to accept these two pads for larger current applications. Please note that the Derating curves for the “R” models accept higher temperature and greater current limits than units without the additional pads. To realize the additional current and thermal capacity of “R” models, you must have a substantial area of several square inches of copper etch flow- soldered to these pads and sufficient feed-throughs or other means of con- ducting current. The “R” pads and the standard pads 1 and 2 are in parallel. If your application uses a standard DOSA pad layout and you cannot con- nect to these ground pads, order model LSM2-T/30-D12-C without the “R” designator. Please observe the lower Derating curves for standard, “non-R” models.

DOSA-SMT, 30A POL DC/DC Converters Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000www.murata-ps.com MDC_LSM2_T30_D12 Series.B11 Page 4 of 12 Performance and Functional Specifications See Note 1 Input Input Voltage Range See Ordering Guide Isolation Not isolated. Input and output Commons are internally connected. Start-Up Voltage 5.6 Volts Undervoltage Shutdown 5 Volts Overvoltage Shutdown None Reflected (Back) Ripple Current (Note 2) 50 mA pk-pk Internal Input Filter Type Capacitive Reverse Polarity Protection None, see fuse information Input Current: Full Load Conditions See Ordering Guide Inrush Transient 0.4 A2Sec. Shutdown Mode (Off, UV, OT) 5 mA Output Short Circuit 60 mA No Load, 5V out 210 mA Low Line (V in=Vmin, 5Vo u t) 18.9 Amps Remote On/Off Control (Note 5) Negative Logic (No model suffix) ON = 0 to +0.55 V max. (See Note 18) OFF = +3.0V min. to +Vin max. Current 1.3 mA max. Output Minimum Loading No minimum load Accuracy (50% load) ±1.5 % of Vnominal Voltage Adjustment Range (Note 13) See Ordering Guide Overvoltage Protection (Note 20) None Temperature Coefficient ±0.01% per οC of Vo u t range Ripple/Noise (20 MHz bandwidth) See Ordering Guide and Note 8 Line/Load Regulation (See Tech. Notes) See Ordering Guide and Note 10 Efficiency See Ordering Guide Maximum Capacitive Loading (Note 15) Cap-ESR=0.001 to 0.01 Ohms 5,000 µF Cap-ESR >0.01 Ohms 10,000 µF Current Limit Inception (Note 19) 48 Amps (cold startup) (98% of V o u t setting) 42 Amps (after warm up) Short Circuit Mode (Note 6) Short Circuit Current Output 600 mA Protection Method Hiccup autorecovery upon overload removal. (Note 17) Short Circuit Duration Continuous, no damage (output shorted to ground) Prebias Startup (Note 16) Converter will start up if the external output voltage is less than Vnominal. Sequencing Slew Rate 2V per millisecond max. Startup delay until sequence start 10 milliseconds min. Tracking accuracy, rising input V o u t=±100 mV of Sequence In Tracking accuracy, falling input V o u t=±200 mV of Sequence In Remote Sense to Vo u t 0.5V max. (Note 7) Dynamic Characteristics Dynamic Load Response 60 µSec to within ±2% of final value (50-100-50% load step, di/dt=20A/ µSec) Start-Up Time 10 mSec for Vo u t=nominal (V in on to Vo u t regulated or On/Off to Vo u t) Switching Frequency 430 ±30 KHz Environmental Calculated MTBF (4) 3,917,077 Hours Operating Temperature Range -40 to +85°C. (Note 9) With derating See Derating Curves (Note 12) Storage Temperature Range -55 to +125°C. Thermal Protection/Shutdown +115°Celsius Relative Humidity to 85%/+85°C, non-condensing Physical Outline Dimensions See Mechanical Specifications Weight 0.28 ounces (7.8 grams) Electromagnetic Interference FCC part 15, class B, EN55022 (may need (conducted and radiated) external filter) Safety Designed to meet UL/cUL 60950-1 CSA-C22.2 No. 60950-1, IEC/EN 60950-1 Absolute Maximum Ratings Input Voltage (Continuous or transient) +15 Volts On/Off Control (negative logic) Zero Volts min. to +Vin max. Input Reverse Polarity Protection None, s ee fuse section Output Current (Note 7) Current-limited. Devices can withstand sustained short circuit without damage. Storage Temperature -55 to +125°C. Lead Temperature (soldering 10 sec. max.) +280°C. Absolute maximums are stress ratings. Exposure of devices to any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than those listed in the Performance/Functional Specifications Table is not implied nor recommended. Specification Notes: (1) Specifications are typical at +25°C, Vin=nominal (+12V), Vo u t=nominal (+5V), full load, external caps and natural convection unless otherwise indicated. Tests at full power should supply substantial forced airflow. All models are tested and specified with external 0.1µF and 10 µF paralleled ceramic/tantalum output capacitors and a 22 µF external input capacitor. All capacitors are low ESR types. These capacitors are necessary to accommodate our test equipment and may not be required to achieve specified performance in your applications. All models are stable and regulate within spec under no-load conditions. (2) Input Back Ripple Current is tested and specified over a 5 Hz to 20 MHz bandwidth. Input filter- ing is Cin=2 x 100 µF tantalum, Cbus=1000 µF electrolytic, Lbus=1 µH. (3) Note that Maximum Power Derating curves indicate an average current at nominal input voltage. At higher temperatures and/or lower airflow, the DC/DC converter will tolerate brief full current outputs if the total RMS current over time does not exceed the Derating curve. (4) Mean Time Before Failure is calculated using the Telcordia (Belcore) SR-332 Method 1, Case 3, ground fixed conditions, Tpcboard=+25°C, full output load, natural air convection. (5) The On/Off Control may be driven with external logic or by applying appropriate external volt- ages which are referenced to -Input Common. The On/Off Control Input should use either an open collector/open drain transistor or logic gate which does not exceed +Vin. (6) Short circuit shutdown begins when the output voltage degrades approximately 2% from the selected setting.

DOSA-SMT, 30A POL DC/DC Converters Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000www.murata-ps.com PERFORMANCE DATA: OUTPUT VOLTAGE = 5 VOLTS MDC_LSM2_T30_D12 Series.B11 Page 6 of 12 Load Current (Amps) Efficiency (%) VIN = 7 V VIN = 12 V VIN = 14 V 12.00 13.00 14.00 15.00 16.00 17.00 18.00 19.00 20.00 21.00 22.00 23.00 24.00 25.00 26.00 27.00 28.00 29.00 30.00 31.00 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 Ambient Temperature (°C) Output Current (Amps) Natural Convection

100 LFM

200 LFM

300 LFM

400 LFM

500 LFM

Efficiency vs. Line Voltage and Load Current @ +25°C LSM2-T/30-D12R Maximum Current Temperature Derating at Sea Level (Vin= 12V, Transverse Airflow). Extra ground pads installed. LSM2-T/30-D12 Maximum Current Temperature Derating at Sea Level (Vin= 12V, Transverse Airflow). No extra ground pads. 11.00 12.00 13.00 14.00 15.00 16.00 17.00 18.00 19.00 20.00 21.00 22.00 23.00 24.00 25.00 26.00 27.00 28.00 29.00 30.00 31.00 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 Ambient Temperature (°C) Output Current (Amps) Natural Convection Output Ripple & Noise (Vin = 12 V, Io u t = 20 A, Co u t = 10µF || 1µF, ’scope = 20 MHz BW) Vertical = 20 mV/div., Sweep = 1µS/div. Power-On Startup (Vin = 12 V, Io u t = 25 A) Ch2 = 20 A/div. StepLoad Transient Response (Vin = 12 V, 0-15A-0)

DOSA-SMT, 30A POL DC/DC Converters Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000www.murata-ps.com PERFORMANCE DATA: OUTPUT VOLTAGE = 3.3 VOLTS MDC_LSM2_T30_D12 Series.B11 Page 7 of 12 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 O utput Current (Amps) Efficiency (%) VIN = 6 V VIN = 12 V VIN = 14 V 12.00 13.00 14.00 15.00 16.00 17.00 18.00 19.00 20.00 21.00 22.00 23.00 24.00 25.00 26.00 27.00 28.00 29.00 30.00 31.00 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 Ambient Temperature (°C) Output Current (Amps) Natural Convection Efficiency vs. Line Voltage and Load Current (Vin = 12V) @ +25°C LSM2-T/30-D12R Maximum Current Temperature Derating at Sea Level (Vin= 12V, Transverse Airflow). Extra ground pads installed. LSM2-T/30-D12 Maximum Current Temperature Derating at Sea Level (Vin= 12V, Transverse Airflow). No extra ground pads. 12.00 13.00 14.00 15.00 16.00 17.00 18.00 19.00 20.00 21.00 22.00 23.00 24.00 25.00 26.00 27.00 28.00 29.00 30.00 31.00 Output Current (Amps) 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 Ambient Temperature (°C) Natural Convection Output Ripple & Noise (Vin = 12 V, Io u t = 20 A, Co u t = 10µF || 1µF, ’scope = 20 MHz BW) Vertical = 20 mV/div., Sweep = 1µS/div. Power-On Startup (Vin = 12 V, Io u t = 25 A) StepLoad Transient Response (Vin = 12 V, 0-15A-0)

DOSA-SMT, 30A POL DC/DC Converters Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000www.murata-ps.com PERFORMANCE DATA: OUTPUT VOLTAGE = 2.5 VOLTS Output Ripple & Noise (Vin = 12 V, Io u t = 20 A, Co u t = 10µF || 1µF, ’scope = 20 MHz BW) Vertical = 20 mV/div., Sweep = 1µS/div. StepLoad Transient Response (Vin = 12 V, 0-15A-0) MDC_LSM2_T30_D12 Series.B11 Page 8 of 12 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 O utput Current (Amps) Efficiency (%) VIN = 6 V VIN = 12 V VIN = 14 V 15.00 16.00 17.00 18.00 19.00 20.00 21.00 22.00 23.00 24.00 25.00 26.00 27.00 28.00 29.00 30.00 31.00 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 Ambient Temperature (°C) Output Current (Amps) Natural Convection Efficiency vs. Line Voltage and Load Current (Vin = 12V) @ +25°C LSM2-T/30-D12R Maximum Current Temperature Derating at Sea Level (Vin= 12V, Transverse Airflow). Extra ground pads installed. LSM2-T/30-D12 Maximum Current Temperature Derating at Sea Level (Vin= 12V, Transverse Airflow). No extra ground pads. 13.00 14.00 15.00 16.00 17.00 18.00 19.00 20.00 21.00 22.00 23.00 24.00 25.00 26.00 27.00 28.00 29.00 30.00 31.00 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 Ambient Temperature (°C) Output Current (Amps) Natural Convection

DOSA-SMT, 30A POL DC/DC Converters Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000www.murata-ps.com PERFORMANCE DATA: OUTPUT VOLTAGE = 1.8 VOLTS MDC_LSM2_T30_D12 Series.B11 Page 9 of 12 Load Current (Amps) Efficiency (%) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 VIN = 6 V VIN = 12 V VIN = 14 V 17.00 18.00 19.00 20.00 21.00 22.00 23.00 24.00 25.00 26.00 27.00 28.00 29.00 30.00 31.00 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 Output Current (Amps) Ambient Temperature (°C) Natural Convection Efficiency vs. Line Voltage and Load Current @ +25°C LSM2-T/30-D12R Maximum Current Temperature Derating at Sea Level (Vin= 12V, Transverse Airflow). Extra ground pads installed. LSM2-T/30-D12 Maximum Current Temperature Derating at Sea Level (Vin= 12V, Transverse Airflow). No extra ground pads. 13.00 14.00 15.00 16.00 17.00 18.00 19.00 20.00 21.00 22.00 23.00 24.00 25.00 26.00 27.00 28.00 29.00 30.00 31.00 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 Ambient Temperature (°C) Output Current (Amps) Natural Convection Output Ripple & Noise (Vin = 12 V, Io u t = 20 A, Co u t = 10µF || 1µF, ’scope = 20 MHz BW) Vertical = 10 mV/div., Sweep = 1µS/div. Power-On Startup (Vin = 12 V, Io u t = 25 A) StepLoad Transient Response (Vin = 12 V, 0-15A-0)

DOSA-SMT, 30A POL DC/DC Converters Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000www.murata-ps.com PERFORMANCE DATA: OUTPUT VOLTAGE = 1.2 VOLTS MDC_LSM2_T30_D12 Series.B11 Page 10 of 12 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Output Current (Amps) Efficiency (%) VIN = 14 V VIN = 12 V VIN = 6 V Efficiency vs. Line Voltage and Load Current @ +25°C (Vin = 12V) LSM2-T/30-D12R Maximum Current Temperature Derating (Vin= 12V, Transverse Airflow). Extra ground pads installed. Output Ripple & Noise (Vin = 12 V, Io u t = 30 A, Co u t = 10µF || 1µF, ’scope BW = 20 MHz) Power-On Startup (Vin = 12 V, Io u t = 30 A) StepLoad Transient Response (Vin = 12 V, 0-15A-0) 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 16.00 17.00 18.00 19.00 20.00 21.00 22.00 23.00 24.00 25.00 26.00 27.00 28.00 29.00 30.00 31.00 Ambient Temperature (°C) Output Current (Amps) Natural Convection

DOSA-SMT, 30A POL DC/DC Converters Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000www.murata-ps.com PERFORMANCE DATA: OUTPUT VOLTAGE = 0.8 VOLTS MDC_LSM2_T30_D12 Series.B11 Page 11 of 12 PERFORMANCE DATA: OUTPUT VOLTAGE = 0.8 VOLTS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Output Current (Amps) Efficiency (%) VIN = 6 V VIN = 12 V VIN = 14 V Efficiency vs. Line Voltage and Load Current @ +25°C (Vin = 12V) LSM2-T/30-D12R Maximum Current Temperature Derating (Vin= 12V, Transverse Airflow). Extra ground pads installed. Output Ripple & Noise (Vin = 12 V, Io u t = 30 A, Co u t = 10µF || 1µF, ’scope BW = 20 MHz) Power-On Startup (Vin = 12 V, Io u t = 30 A) StepLoad Transient Response (Vin = 12 V, 0-15A-0) 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 16.00 17.00 18.00 19.00 20.00 21.00 22.00 23.00 24.00 25.00 26.00 27.00 28.00 29.00 30.00 31.00 Output Current (Amps) Ambient Temperature (°C) Natural Convection

DOSA-SMT, 30A POL DC/DC Converters Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000www.murata-ps.com Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice. © 2008 Murata Power Solutions, Inc. USA: Mansfield (MA), Tel: (508) 339-3000, email: sales@murata-ps.com Canada: Toronto, Tel: (866) 740-1232, email: toronto@murata-ps.com UK: Milton Keynes, Tel: +44 (0)1908 615232, email: mk@murata-ps.com France: Montigny Le Bretonneux, Tel: +33 (0)1 34 60 01 01, email: france@murata-ps.com Germany: München, Tel: +49 (0)89-544334-0, email: munich@murata-ps.com Japan: Tokyo, Tel: 3-3779-1031, email: sales_tokyo@murata-ps.com Osaka, Tel: 6-6354-2025, email: sales_osaka@murata-ps.com China: Shanghai, Tel: +86 215 027 3678, email: shanghai@murata-ps.com Guangzhou, Tel: +86 208 221 8066, email: guangzhou@murata-ps.com Singapore: Parkway Centre, Tel: +65 6348 9096, email: singapore@murata-ps.com Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A. Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356 www.murata-ps.com email: sales@murata-ps.com ISO 9001 REGISTERED 08/19/08 MDC_LSM2_T30_D12 Series.B11 Page 12 of 12