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


Design files


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
Output voltage options PMP9492.1 PMP9492.2 PMP9492.3
Vin (Min) (V) 4.5 3.3 3.3
Vin (Max) (V) 20 3.3 3.3
Vout (Nom) (V) 3.3 2.5 1.8
Iout (Max) (A) 1 1 1
Output Power (W) 3.3 2.5 1.8
Isolated/Non-Isolated Non-Isolated Non-Isolated Non-Isolated
Input Type DC DC DC
Topology Buck- Synchronous Buck- Synchronous Buck- Synchronous
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUAE5.PDF (2977 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more


Detailed schematic diagram for design layout and components


Detailed schematic diagram for design layout and components


Complete listing of design components, reference designators, and manufacturers/part numbers


Design file that contains information on physical board layer of design PCB


Includes TI products in the design and potential alternatives.

AC/DC & DC/DC converters (integrated FET)

LM26420Dual 2 A, high-efficiency synchronous DC/DC converter

Data sheet: PDF | HTML
AC/DC & DC/DC converters (integrated FET)

LM53603-Q1Automotive 3.5-V to 36-V, 3-A synchronous step-down converter

Data sheet: PDF | HTML
AC/DC & DC/DC converters (integrated FET)

TPS60150140mA, 5V Charge Pump in 2x2 SON

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report PMP9492 Test Results Aug. 10, 2015

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