电流限制电路的降压稳压器

摘要：本文演示了如何实现使用MAX4173H电流检测放大器MAX1692的PWM降压稳压器的电流限制。
Maxim > App Notes > AMPLIFIER AND COMPARATOR CIRCUITS POWER-SUPPLY CIRCUITS

Keywords: current limit, current sense amplifier, buck regulator, pwm, step-down regulator Dec 01, 2000

APPLICATION NOTE 478
Current-Limit Circuit for the Buck Regulator

Abstract: This article demonstrates how to achieve current limit for the MAX1692 PWM step-down regulator by
using a MAX4173H current-sense amplifier.

Additional Information:


q Quick View Data Sheet for the MAX1692
q Quick View Data Sheet for the MAX4173
q Samples and Literature Order Form
q Technical Support: Power




A current limit can be added to a step-down converter by using a MAX4173H current-sense amplifier to inject
current into the feedback network. D1 sharpens the threshold of current