ADI ADP1876 25A双路降压电源解决方案

ADI公司的ADP1876是双路输出DC/DC同步降压控制器,工作频率600kHz,并集成了可驱动N-沟功率MOSFET的驱动器,输入电压2.75V-20V,功率级输入电压1V-20V,输出电压从0.6V到输入电压的90%,每路的输出电压大于25A,基准电压在−40℃到 +85℃的精度为±0.85%,主要用在消费类电子,电讯基站和网络设备以及工业和仪表.本文介绍了ADP1876主要特性,功能框图,典型应用电路和评估板ADP1876-EVALZ主要特性,电路图,材料清单和PCB布局图.

The ADP1876 is a dual output dc-to-dc synchronous buck controller operating at 600 kHz fixed frequency with integrated drivers that drive N-channel power MOSFETs. An additional fixed voltage output, 150 mA linear regulator is available for powering low power loads. The device operates in current mode for improved transient response and uses valley current sensing for enhanced noise immunity. The two PWM outputs are phase shifted 180° for reducing the input current ripple and the required input capacitance.

The ADP1876 provides high speed, high peak current drive capability with dead time optimization to enable energy efficient power conversion.

ADP1876主要特性:

Wide input range: 2.75 V to 20 V

Power stage input voltage: 1 V to 20 V

Output voltage range: 0.6 V up to 90% VIN

Linear dropout (LDO) regulator with a fixed output 1.5 V at 150 mA
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