NS LMZ14203H输入42V输出3A电源解决方案

NS 公司的LMZ14203H是3A SIMPLE SWITCHER电源模块,较大输入电压42V,具有极好的电源转换效率,线路和负载调以及输出精度.输入电压6V-42V,输出电压低至5V,效率高达97%.主要用在包括工业系统、通信网络基建设备及军事设备等市场.本文介绍了LMZ14203H电指标,主要特性和优势, 应用方框图以及LMZ14203H/02H/01H评估板主要指标,详细电路和材料清单.

LMZ14203H: 3A SIMPLE SWITCHER® Power Module with 42V Maximum Input 

The LMZ14203H SIMPLE SWITCHER power module is an easy-to-use step-down DC-DC solution capable of driving up to 3A load with exceptional power conversion efficiency, line and load regulation, and output accuracy. The LMZ14203H is available in an innovative package that enhances thermal performance and allows for hand or machine soldering. 

The LMZ14203H can accept an input voltage rail between 6V and 42V and deliver an adjustable and highly accurate output voltage as low as 5V. The LMZ14203H only requires three external resistors and four external capacitors to complete the power solution. The LMZ14203H is a reliable and robust design with the following protection features: thermal shutdown, input under-voltage lockout, output over-voltage protection, short-circuit protection, output current limit, and allows startup into a pre-biased output. A single resistor adjusts the switching frequency up to 1 MHz. 

LMZ14203H电指标:

■ Up to 3A output current

■ Input voltage range 6V to 42V

■ Output voltage as low as 5V

■ Efficiency up to 97%

LMZ14203H主要特性:

■ Integrated shielded inductor

■ Simple PCB layout

■ Flexible startup sequencing using external soft-start and precision enable

■ Protection against inrush currents

■ Input UVLO and output short circuit protection

■ –40

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