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reference designLM5122 | Demoboard PMP7966

Texas Instruments LM5122 | Demoboard PMP7966

Power Solution for an Automotive Fuel Injector

Overview

TopologyBoost Converter
Input voltage6-42 V
Output 152 V / 2.5 A

Description

PMP7966 is a 4-phase boost converter rated for 52V output at 2.5A from an input voltage of 6V to 42V. This design uses LM5122 boost controllers at a switching frequency of 100 kHz each phase, resulting in 400 kHz input and output ripple. 680μF aluminum electrolytic capacitors are used at the output of each phase, providing hold-up to support large transient currents.

Features

  • 52V power supply designed for automotive fuel injector solenoids
  • 4-phase boost with 100kHz switching frequency but easier-to-filter 400kHz ripples
  • 6V to 42V input voltage range, ideal for 12V/24V automotive batteries
  • Output capacitors sized to provide the hold-up during large load transients

More information

Products

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Data­sheet
Simu­lation
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Status
Product series
L(µH)
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC(mΩ)
fres(MHz)
Material
Qty.
SamplesAvailability & Sample
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7443551130
SPECWE-HCI SMT Flat Wire High Current Inductor, 1.3 µH, 32.1 A
Simu­lation
Availability
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-HCI SMT Flat Wire High Current Inductor
Inductance1.3 µH
Performance Rated Current32.1 A
Saturation Current @ 10%11 A
Saturation Current @ 30%25 A
DC Resistance1.8 mΩ
Self Resonant Frequency59 MHz
MaterialWE-PERM 
Packaging Unit400 
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