Maxim MAX16928汽车TFT-LCD显示器电源解决方案

Maxim公司的MAX16928是具有升压转换器和栅极电压稳压器的汽车TFT-LCD显示器电源解决方案,集成了一个升压转换器,一个1.8V/3.3V稳压控制器和两个栅极电压稳压器(一个28V提供20mA,一个负栅极电压).高达6W的大功率升压输出,输出电压高达18V,工作频率2MHz,主要用在汽车仪表盘,信息显示器和导航系统.本文介绍了MAX16928主要特性,方框图, 典型应用电路图和MAX16928评估板主要特性,电路图,材料清单与PCB布局图.

The MAX16928 is a highly integrated power supply for automotive TFT-LCD applications. The device inte­grates one boost converter, one 1.8V/3.3V regulator controller, and two gate voltage regulators. The device comes in several versions to satisfy common automotive TFT-LCD power-supply requirements.

The boost converter uses spread-spectrum modulation to reduce peak interference and to optimize EMI performance.

The sequencing input (SEQ) allows flexible sequencing of the positive-gate and negative-gate voltage regulators. The power-good indicator (PGOOD) indicates a failure on any of the converters or regulator outputs. Integrated thermal shutdown circuitry protects the device from over­heating.

The MAX16928 is available in a 20-pin TSSOP pack­age with exposed pad and operates over the -40NC to +105NC temperature range.

MAX16928主要特性:

High-Power (Up to 6W) Boost Output Providing Up to 18V
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