CISPR 25 Class 5 Multi-Output Power Supply Reference Design for Rear Camera, Automotive ADAS Systems
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Key Document


PMP9492 is a conducted EMI optimized (CISPR 25 Class 5) 9 W Multi output Design for  Wide Range Vin automotive ADAS application that supports Cold –Cranking Conditions . The design uses an LM53603 regulator IC (used as Buck), LM26420 (used as dual Buck) and TPS60150 regulator IC (used as Charge pump for 5V output). The design accepts an input voltage of 4.5Vin to 20Vin and provides the outputs of 3.3V @ 1.0A, 2.5V @ 1.0A, 1.8V @ 1.0A, and 5V @ 100mA. It features a small size and is an inexpensive and more efficient solution customized for ADAS and other Automotive related applications. The Board dimension of PMP9492 PCB is 2600mil × 4000mil. Four layer PCB was used for the design.

  • Triple Buck + Charge Pump for Lower Power Rear Camera ADAS Application
  • In compliance with the CISPR 25 Class 5 conducted emissions standard, passing both AM & FM radio band tests
  • All devices Switching frequency 2.1MHz
  • EMI performance optimized layout
  • Single Differential Filter for all the Switching Converters
  • 4.5V to 20V wide Vin range- Supports Cold Cranking Conditions

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Design Files

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(Output Voltage 1)
(Output Voltage 2)
(Output Voltage 3)
Vin (Min) (V)
Vin (Max) (V)203.33.3
Vout (Nom) (V)
Iout (Max) (A)111
Output Power (W)
Input TypeDCDCDC
TopologyBuck- SynchronousBuck- SynchronousBuck- Synchronous

TI Devices (3)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LM26420  Dual 2 A, high-efficiency synchronous DC/DC converter  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
LM53603-Q1  3.5 to 36Vin, 3 Ampere Synchronous DC-DC Converter for Automotive Applications  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
TPS60150  140mA, 5V Charge Pump in 2x2 SON  DC/DC switching regulators  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LM26420 Download Download
Download Download
LM53603-Q1 Download Download
TPS60150 Download Download

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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 2916 10 Aug 2015
Design files (4)
Title Type Size (KB) Date
PDF 346 10 Aug 2015
ZIP 222 10 Aug 2015
PDF 24 10 Aug 2015
PDF 215 10 Aug 2015

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