UC3901

更新时间： 2024-11-24 22:49:27

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
7页	399K
描述
Isolated Feedback Generator

阅读下载

中文翻译

获取价格

数据手册
替代型号

如果您发现信息不准确，欢迎纠错

UC3901 数据手册

UC1901

UC2901

UC3901

Isolated Feedback Generator

FEATURES

DESCRIPTION

• An Amplitude-Modulation System for

Transformer Coupling an Isolated

Feedback Error Signal

The UC1901 family is designed to solve many of the problems associ-

ated with closing a feedback control loop across a voltage isolation

boundary. As a stable and reliable alternative to an optical coupler, these

devices feature an amplitude modulation system which allows a loop er-

ror signal to be coupled with a small RF transformer or capacitor.

• Low-Cost Alternative to Optical

Couplers

The programmable, high-frequency oscillator within the UC1901 series

permits the use of smaller, less expensive transformers which can readily

be built to meet the isolation requirements of today's line-operated power

systems. As an alternative to RF operation, the external clock input to

these devices allows synchronization to a system clock or to the switch-

ing frequency of a SMPS.

• Internal 1% Reference and Error

Amplifier

• Internal Carrier Oscillator Usable to

5MHz

• Modulator Synchronizable to an

External Clock

An additional feature is a status monitoring circuit which provides an active-

low output when the sensed error voltage is within 10% of the reference.

• Loop Status Monitor

The DRIVERA output, DRIVERB output, and STATUS output are disabled

until the input supply has reached a sufficient level to allow proper operation

of the device.

Since these devices can also be used as a DC driver for optical couplers,

the benefits of 4.5 to 40V supply operation, a 1% accurate reference, and a

high gain general purpose amplifier offer advantages even though an AC

system may not be desired.

UC1901 SIMPLIFIED SCHEMATIC

UDG-98080

11/98

12 3 4 5 6 7

中文翻译

下载PDF

UC3901 替代型号

型号	品牌	替代类型	描述	数据表
UC2901	TI	功能相似	Isolated Feedback Generator

与UC3901相关器件

型号	品牌	获取价格	描述	数据表
UC3901D	TI	获取价格	FEEDBACK GENERATOR\|BIPOLAR\|SOP\|14PIN\|PLASTIC
UC3901DG4	TI	获取价格	Isolated Feedback Generator
UC3901DTR	TI	获取价格	Isolated Feedback Generator
UC3901DTRG4	TI	获取价格	Isolated Feedback Generator
UC3901DW	TI	获取价格	Isolated Feedback Generator
UC3901DWG4	TI	获取价格	Isolated Feedback Generator
UC3901DWTR	TI	获取价格	Isolated Feedback Generator
UC3901DWTRG4	TI	获取价格	Isolated Feedback Generator
UC3901J	TI	获取价格	FEEDBACK GENERATOR\|BIPOLAR\|DIP\|14PIN\|CERAMIC
UC3901N	TI	获取价格	Isolated Feedback Generator