ADI ADP2114多功能同步降压开关电源稳压方案

ADI公司的ADP2114是多功能同步降压开关电源稳压器,它的两个PWM通路可以配置成2A和2A或3A和1A或4A输出,可选择开关频率300kHz, 600kHz,1.2MHz或高达2MHz,效率高达95%,输入电压从2.7V到5.5V,可选择固定输出电压0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V或可调输出电压(低至0.6V).具有过流和热过载保护,外币部可编程软起动. ADP2114可用在点负载稳压器,通信和网络系统,消费类电子,工业和仪表测试与医疗.本文介绍了ADP2114的主要特性,方框图, 典型应用电路, 双路2A, 3A/1A以及单路4A输出应用电路和可调输出应用电路.

The ADP2114 is a versatile, synchronous step-down, switching regulator that satisfies a wide range of customer point-of-load requirements. The two PWM channels can be configured to deliver independent outputs at 2 A and 2 A (or 3 A/1 A) or can be configured as a single interleaved output capable of delivering 4 A. The two PWM channels are 180º phase shifted to reduce input ripple current and to reduce input capacitance.

The ADP2114 provides high efficiency and operates at switching frequencies of up to 2 MHz. At light loads, the ADP2114 can be set to operate in pulse skip mode for higher efficiency or in forced PWM mode to reduce EMI.

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