2A 27V Synchronous Buck Converter IC - Power Mospowermos.com/Uploads/download/application/Car Chage... · 2015-12-02 · 2A 27V Synchronous Buck Converter IC CM71001B Application

PMSPOWER MOS Microelectronics LTD.POWER MOS Electronics LTD. CM71001B

2A 27V Synchronous Buck Converter IC2A 27V Synchronous Buck Converter IC

CM71001B Application NoteCM71001B Application Note

December 1st, 2015

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Feature 2A Output Current

Wide 4.5V to 27V Operating Input Range

Integrated Power MOSFET switches

Output Adjustable from 0 925V to 0 8Vin Up to 94% Efficiency Output Adjustable from 0.925V to 0.8Vin Up to 94% Efficiency

Programmable Soft-Start

Stable with Low ESR Ceramic Output Capacitors

Fixed 340KHZ Frequency

Cycle-by-Cycle Over Current Protection

Short Circuit Protection

Input Under Voltage Lockout

Package： SOP-8L Package： SOP 8L

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PMSPOWER MOS Microelectronics LTD.POWER MOS Electronics LTD. CM71001B-1

IC Internal Structure Diagram

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PIN Package

PM

SD

55X

XX S572X

X

IC Pin DefinitionPin

Number Name Description

1 BS B t t1 BS Bootstrap.2 VIN Input Supply.3 SW Switch Output.4 GND Ground.5 FB Feedback Input5 FB Feedback Input.6 COMP Compensation Pin.7 EN Enable Input.8 SS Soft-Start Control Input.

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IC Application Diagram

Note: Vcc input capacitor requires the use of electrolytic capacitors of 100uF yor above, otherwise easily lead to damage permanence.

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Design Reference (5V-2A) I t V lt 8 27Vd Input Voltage： 8-27Vdc

Output Voltage：5V

Output Current： 1.5A

Efficiency： >85% (@12V loading 1.7A)

Size : 45mm*17.8mm*10mm

PCB Gerber File

Top View Bottom View

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Diagram (5V-2A)

Note: Vcc input capacitor requires the use of electrolytic capacitors of 100uF or above, otherwise easily lead to damage permanence.

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CM71001B D5572-5V2A BOMNO. Symbol Descrition Qty Unite Placey y

1 SMD resistor SMD_RES_100K_5%_0805 1 PCS R1





6 SMD capacitor SMD_CAP_10nf_10%_0805 1 PCS C1

7 SMD capacitor SMD CAP 100nf 10% 0805 1 PCS C27 SMD capacitor SMD_CAP_100nf_10%_0805 1 PCS C2

8 SMD capacitor SMD_CAP_10nf_10%_0805 1 PCS C3

9 ELE capacitor ELE_CAP_100uF_25V_20% 1 PCS EC1

10 ELE capacitor ELE_CAP-330uF_6.3V_20% 1 PCS EC210 PCS

11 LED 1 PCS LED

12 Inductance Inductance_10uH_10%_4*8*8 1 PCS L1

13 USB USB socket 1 PCS

14 IC D5572, , SOP8 1 PCS U1

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Line Regulation and Load Regulation Test reportVin/mV Iin/mA I load/mA Vout/mV EfficiencyVin/mV Iin/mA I_load/mA Vout/mV Efficiency12000 26 1 5168 1.66%12000 29 10 5171 14.86%12000 46 50 5172 46.85%12000 68 100 5170 63.36%12000 90 150 5168 71 78%12000 90 150 5168 71.78%12000 246 500 5150 87.23%12000 485 1000 5123 88.02%12000 742 1500 5114 86.15%12000 794 1600 5110 85.81%12000 847 1700 5104 85 37%12000 847 1700 5104 85.37%

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Line Regulation and Load Regulation Test report

Vin/mV Iin/mA I load/mA Vout/mV EfficiencyVin/mV Iin/mA I_load/mA Vout/mV Efficiency

24000 24 1 5266 0.91%

24000 25 10 5262 8 77%24000 25 10 5262 8.77%

24000 34 50 5257 32.21%

24000 45 100 5249 48.60%

24000 56 150 5227 58.34%

24000 136 500 5194 79.56%

24000 254 1000 5182 85.01%

24000 383 1500 5180 84.53%

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Line Regulation and Load Regulation Test report

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Vout Vs Load Test report

Vin/mV Iin/mA I_load/mA Vout/mV Efficiency

12000 29 10 5171 14.86%

12000 68 100 5170 63.36%

12000 246 500 5150 87.23%

12000 485 1000 5123 88.02%

12000 742 1500 5114 86.15%

12000 9 1600 110 8 81%12000 794 1600 5110 85.81%

12000 847 1700 5104 85.37%

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Vin/mV Iin/mA I_load/mA Vout/mV Efficiency

24000 25 10 5191 8 65%24000 25 10 5191 8.65%

24000 45 100 5279 48.88%

24000 136 500 5235 80 19%24000 136 500 5235 80.19%

24000 254 1000 5185 85.06%

24000 383 1500 5147 83.99%

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Typical Performance Characteristics(VIN=12V, Io=0 mA, Temperature = 25 ℃, unless otherwise specified)

Light Load Operation (No load) VIN=12V, Iin=8.2 mA, Vout=3.3V

Heavy Load Operation (2A Load)VIN=12V, Vout=3.3V, , ,

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Startup Vin=12V, Vout=3.3V, Iout=1Athrough Vin Through Enable.g g

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Short Circuit Protection Vin=12V

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Efficiency vs Load Current Output Voltage(3.3V) vs Load Current

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Output Voltage vs Ambient Temperature

Switching Frequency vs Ambient Temperature

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Switches RdsON vsJunction Temperature(Vin=12V)

Junction Temperature vs Load Current

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PMSPOWER MOS Microelectronics LTD.POWER MOS Electronics LTD.

Q & A

Th k Y !Thank You!

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Documents

2A 27V Synchronous Buck Converter IC - Power Mospowermos.com/Uploads/download/application/Car Chage... · 2015-12-02 · 2A 27V Synchronous Buck Converter IC CM71001B Application