MP4581

100V, 0.8A Synchronous Buck Converter

Description

The MP4581 is a high-efficiency, synchronous step-down converter with integrated power MOSFETs. It provides 0.8A of output current (IOUT) in a buck topology from an input power supply of up to 100V.

The MP4581 features constant-on-time (COT) control, which provides fast transient response and facilitates loop stabilization. The configurable operation frequency can be set between 100kHz to 1MHz via an external resistor.

The MP4581 supports high-efficiency pulse-skip mode (PSM) while operating under light-load conditions. The valley current limit circuits protect against overload and short-circuit conditions.

The MP4581 is available in a SOIC-8EP package.

Features & Benefits

8V to 100V Input Voltage Range
1V to 30V Output Voltage Range
90% Maximum Operation Duty Cycle
625mΩ/265mΩ Internal Power MOSFETs
Constant-On-Time (COT) Control
100kHz to 1MHz Configurable Frequency
Internal Soft Start and Loop Compensation
Over-Current Protection (OCP)
Short-Circuit Protection (SCP) with Hiccup Mode
High-Efficiency Pulse-Skip Mode (PSM) under Light-Load Conditions
Available in an SOIC-8EP Package

Active Part Numbers:

MP4581GN MP4581GN–Z

Evaluation Tools

EV4581-N-00A Evaluation Kit 100V, 0.8A Synchronous Buck Converter

The EV4581 Evaluation Board is designed to demonstrate the capabilities of MPS’ MP4581. The MP4581 is a high efficiency synchronous
step-down converter with integrated high-side and low-side MOSFETs. It provides 0.8A output in buck topology from up to 100V input power
supply.

MP4581 supports high efficiency pulse-skipmode (PSM) in light load condition. Valley current limit circuits protect against overload
and short circuit conditions.

The MP4581 is available in a SOIC8EP packages.

$25.00
+ tax