IC manufacturers Texas Instruments

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Texas Instruments LM25122 | Demoboard TIDA-01553

Automotive Off-battery VCM Supporting 2.5-V Cold Crank Profile Reference Design

Overview

TopologyBoost Converter
Input voltage2.5-40 V
Switching frequency400-500 kHz
Output 17 V
IC revisionB

Description

This reference design is a high-current, wide input voltage range circuit that can handle engine cold crank profile down to 2.5V. The dual-output voltages are 5V and 3.3V that support up to 10A for each output. The design is suitable for an automotive off-battery infotainment application that needs to support a very stringent starting profile down to 2.5V.

Features

  • Wide input voltage range of 2.5V to 40V
  • Dual high-current synchronous outputs: 5V, up to 10A; 3.3V, up to 10A
  • Continuous operation during engine crank transient down to 2.5V
  • Reverse battery protection with zero IQ smart diode controller
  • Minimized AM radio band interference

Typical applications

  • Aftermarket Head Unit
  • Voltage Conditioning Module

Products

Order Code Data­sheet Simu­lation Downloads Product seriesL
(µH)
IRP,40K
(A)
ISAT,10%
(A)
ISAT,30%
(A)
RDC max.
(mΩ)
fres
(MHz)
Samples
7443630070SPEC
8 files WE-HCF SMT High Current Inductor 0.7 54.7 63 75 0.91 65
Order Code Data­sheet Simu­lation
7443630070SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Product seriesL
(µH)
IRP,40K
(A)
ISAT,10%
(A)
ISAT,30%
(A)
RDC max.
(mΩ)
fres
(MHz)
Samples