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TD1489-Synchronous rectification step-down solution

Overview

Chip solution DC-DC chip TD1489

TD1489 is a synchronous buck circuit with two current senses.

This module is a solution board to verify the chip function.

Input DC interface. Wide input supply voltage range 4.7V to 40V.

The output is two independent current-limiting USB interfaces.

Output voltage: 5V.

Total output current: 5A

Different output current limits are obtained through different sampling resistors.

Efficiency 1A (93%), 2A (92%)

Design Files

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Update:2025-06-18 23:56:18

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