Power Solution for an Engineering Equipment Fuel Injector


Design files


The PMP7967 converts a DC input of 6V-42V to an output of 90V at 1.5A.  The design uses four interleaved LM5122 boost controllers with each controller switching at 100kHz. The resulting 4-phase boost converter has a ripple frequency of 400kHz. Freqeucny can also be synchronized to an external signal. Four 330μF aluminum electrolytic capacitors are used at the output to support sudden load current demands in the fuel injector solenoids.

  • 4-phase boost converter with 90V/1.5A output
  • 100kHz switching frequency with 400kHz effective input and output ripples
  • 6V to 42V input voltage range, good for 12V or 24V lead acid batteries
  • 1.32mF total output capacitance to support sudden load demands
Output voltage options PMP7967.1
Vin (Min) (V) 6
Vin (Max) (V) 42
Vout (Nom) (V) 90
Iout (Max) (A) 1.5
Output Power (W) 135
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Boost- 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.

SNVU307.PDF (948 K)

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

SNVR290.PDF (210 K)

Detailed schematic diagram for design layout and components

SNVR291.PDF (95 K)

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

TIDC218.ZIP (1073 K)

Files used for 3D models or 2D drawings of IC components


Includes TI products in the design and potential alternatives.

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Real-time clocks (RTCs) & timers

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Technical documentation

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Type Title Date
Test report PMP7967 Test Results Aug. 14, 2013

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