[原创] Diodes AP72200大电流同步升-降压转换器解决方案

Diodes公司的AP72200是大电流同步升-降压转换器,采用四开关H桥配置,以支持降压和升压操作,提供至少是2A的输出电流,具有高效率,极好的瞬态特性和大DC电流输出精密度.主要用于智能手机,平板电脑和手持消费类电子设备.本文介绍了AP72200功能框图,应用电路,以及评估板AP72200-EVM主要特性,电路图,材料清单和PCB设计图.

The AP72200 is a high-current synchronous buck-boost converter providing high efficiency, excellent transient response, and high DC output accuracy. The targeted applications are smartphones, tablets, and other handheld devices. The AP72200 utilizes a four-switch H-bridge configuration to support buck and boost operation. The buck-boost provides at least 2A output current.

The current control scheme handles wide input/output voltage ratios and provides low external component count with outstanding performance in line/load transient response and seamless transition between buck and boost modes.

The AP72200 features I2C compatible, two-wire serial interface consisting of a bidirectional serial-data line, SDA, and a serial-clock line, SCL. It supports SCL clock rates up to 3.4MHz.

The AP72200 also features UVLO, OTP, and OCP to protect the circuit.
This IC is available in a small 2.125mm × 1.750mm, 20 balls WLCSP package.

AP72200应用:
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