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Texas Instruments LM25122 | Demoboard TIDA-01553
Automotive Off-battery VCM Supporting 2.5-V Cold Crank Profile Reference Design
Overview
| Topology | Boost Converter |
| Input voltage | 2.5-40 V |
| Switching frequency | 400-500 kHz |
| Output 1 | 7 V |
| IC revision | B |
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
- Voltage Conditioning Module
- Aftermarket Head Unit
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | IRP,40K(A) | ISAT,10%(A) | ISAT,30%(A) | RDC max.(mΩ) | fres(MHz) | Wire Type | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-HCF SMT High Current Inductor, 0.7 µH, 54.7 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCF SMT High Current Inductor | Inductance0.7 µH | Performance Rated Current54.7 A | Saturation Current @ 10%63 A | Saturation Current @ 30%75 A | DC Resistance0.91 mΩ | Self Resonant Frequency65 MHz | Wire TypeFlat |