Buck Converter for Negative Input and Output Voltages Reference Design


Design files


The PMP9624 utilizes negative input and output voltages. The efficiency approaches 80% at full load with a -18V input, and has good thermal performance.

  • Utilizes negative input and output voltages
  • Compact design (approximately 45mm in length)
  • Full load efficiency approaches 80% at -18V input
  • Test report available
Output voltage options PMP9624.1
Vin (Min) (V) -50
Vin (Max) (V) -18
Vout (Nom) (V) -3.3
Iout (Max) (A) 2
Output Power (W) 6.6
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Buck- Non Sync
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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.

TIDUA31.PDF (1545 K)

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

TIDRF59.PDF (115 K)

Detailed schematic diagram for design layout and components

TIDRF60.PDF (108 K)

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

TIDRF61.PDF (70 K)

Detailed overview of design layout for component placement


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


Includes TI products in the design and potential alternatives.

Boost controllers (external switch)

TPS402104.5~52V Wide Input Range Boost/SEPIC/Flyback DC-DC Controller

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report PMP9624 Test Results Jun. 11, 2015

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