MAX20459EVKIT

Product Details

The MAX20459 evaluation kit (EV kit) demonstrates the MAX20459 automotive high-current, high-efficiency, stepdown DC-DC converter with integrated USB Type-C DFP controller and host-charger-adapter emulation, which provides ESD and short-to-battery protection.

The MAX20459 features integrated host-charger portdetection circuitry adhering to the USB Type-C specification, the USB-IF BC1.2 battery charging specification, Apple iPod/iPhone/iPad^® and Samsung^® charge-detection termination resistors, and Chinese Telecommunication Industry Standard YD/T 1591-2009.

The MAX20459 step-down, synchronous, DC-DC converter operates from a voltage of up to 28V continuous and protects against load-dump transients up to 40V. The converter is programmable for frequencies from 275kHz to 2.2MHz and can deliver 3A continuously.

The MAX20459 integrates thermal management in a twostage approach to limit maximum die temperature. In the first stage, the standalone variant reduces the Type-C handshake and DC current limit by one step when die temperature exceeds 130°C (typ). The second stage triggers DC-DC shutdown if the die temperature continues rising and exceeds 165°C (typ).

The EV kit is populated with a standalone enabled MAX20459ATJC/V+ that is configured by pull-down resistors. The I²C variant (MAX20459ATJA/V+) allows for flexible configuration, detailed fault diagnostics, and access to the on-chip ADC that reports die temperature, output voltage, and output current. The I²C features are easily accessed by using the Maxim MINIQUSB module along with the provided example GUI.