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4A PWM同步降压演示板STEVAL-ISA083V1

制  造  商:ST意法半导体

商品编号:STEVAL-ISA083V1

价       格:

¥473.28(含16%增值税)

数       量:

说       明:

由武汉力源信息技术股份有限公司 发货

Description

The STEVAL-ISA083V1, based on the ST1S40IPUR, is an internally compensated 800 kHz fixed-frequency PWM synchronous stepdown converter demonstration board.

The ST1S40 operates from 4.0 V to 18.0 V input, while it regulates an output voltage as low as 0.8 V and up to VIN (100% duty cycle).

The ST1S40 integrates a 95 mΩ high-side switch and a 69 mΩ synchronous rectifier allowing very high efficiency with very low output voltage.

The peak current mode control with internal compensation delivers a very compact solution with a minimum component count.

The ST1S40 is protected through cycle-by-cycle current limiting in case of overload and is also protected by a current foldback function with frequency reduction in case of short-circuit.

The device is available with an enable on/off function.

Features
■ Input voltage Vin : 4 V to 18 V
■ Output voltage Vout : 3.3 V
■ Maximum output current: 4 A
■ Switching frequency: 800 kHz
■ Short-circuit protected
■ RoHS compliant

Pictures

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