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Texas Instruments TPS57140-Q1 | Demoboard TIDA-01429
Automotive Discrete SBC Pre-Boost, Post-Buck With CAN Reference Design
Overview
| Topology | Buck Converter |
| Input voltage | 42 V |
| Switching frequency | 100-2200 kHz |
| Output 1 | 5 V / 1.5 A |
| IC revision | E1 |
Description
The TIDA-01429 reference design implements a wideinput voltage boost controller, followed by a wide input voltage buck converter set to 5.0 V. The 5.0 V supply is used for powering a Controller Area Network (CAN) transceiver and a compact fixed 3.3 V linear drop-out (LDO) regulator for supplying the C2000 microcontroller. This design has been tested for CISPR 25 radiated emissions per absorber lined shielded enclosure (ALSE) method, CISPR25 conducted emissions via the voltage method, and for immunity to Bulk Current Injection (BCI) per ISO 11452-4, all with CAN communication operating at 500 KBPS. This is a electromagnetic compliance (EMC) vetted 3-stage power tree with controller area network (CAN) reference design that can be used in many automotive applications requiring operation with input voltages as low as 3.5 V.
Features
Remark: BOM 7 Schematic PDF are added with main PDF.FeaturesWide input voltage, adjustable boost controllerWide input voltage, fixed 5V buck converterPasses Class 5 CISPR 25 radiated emissionsPasses Class 4 CISPR 25 conducted emissionsMaintains regulated 3.3V and 5V supplies through battery input voltages down to 3.5VAble to survive load dump voltages up to 40V
Typical applications
- Automotive Body Control Module, Automotive Front Camera, Automotive Head Unit
