System Level Power Reference Design for 20-W ADAS system with Automotive Protections


Design files


PMP10750 is a System optimized (CISPR 25 Class 5) 20W design for upstream converter used in ADAS system with automotive protection.

The design has various protections such as Load dump through TVS (ISO pulse testing), Reverse Voltage (Innovative Smart diode with very low Iq), Battery Disconnect Switch with OVP protection (PFET) and is EMI optimized to meet Conductive EMI limits of CISPR25 Class5.
Input voltage range is between 4.5V to 30V with OVP at 20V and hence will operate in wide input voltage conditions.

LM74610 is used for Battery reverse protection which utilizes a charge pump to drive an N-channel FET to provide a resistive path for the bypass current to flow.  LM53603Q1 is used as front end DC/DC Buck converter which is 2.2MHz switching, Synchronous rectified Wide Vin Buck Converter which can take transient up to 42V.

  • Designed for wide Vin and Start Stop conditions 
  • In compliance with the ISO pulse test / CISPR 25 Class 5 conducted emissions standard, passing both AM & FM radio band tests
  • All devices Switching frequency at 2.1MHz (AM Band Avoidance)
  • Reverse Protection through Smart diode
  • Series Fault protection FET with OVP
  • Power up and Power Down sequencing through integrated sequencer
Output voltage options PMP10750.1
Vin (Min) (V) 4.8
Vin (Max) (V) 30
Vout (Nom) (V) 3.3
Iout (Max) (A) 3
Output Power (W) 9.9
Isolated/Non-Isolated Isolated
Input Type DC
Topology Buck- Synchronous

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.

TIDUAX7.PDF (1387 K)

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


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.

Buck converters (integrated switch)

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

Data sheet document-pdfAcrobat PDF open-in-new HTML
Ideal diode/ORing controllers

LM74610-Q10.48-V to 42-V, zero IQ automotive ideal diode controller

Data sheet document-pdfAcrobat PDF open-in-new HTML
Shunt voltage references

TLVH431A1% low-voltage wide-operating current adjustable precision shunt regulator

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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Type Title Date
* Test report PMP10750 Test Results Oct. 19, 2015

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