Datasheet > UC2901QTR

UC2901QTR

更新时间： 2024-10-01 07:07:35

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
12页	593K
描述
SPECIALTY ANALOG CIRCUIT, PQCC20, PLASTIC, LCC-20

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

UC2901QTR 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 SCHEMATICNovember S

UDG-98080

SLUS279A - November 1998 - Revised January 2010

12 3 4 5 6 7...12

中文翻译

下载PDF

与UC2901QTR相关器件

型号	品牌	获取价格	描述	数据表
UC2902	TI	获取价格	Load Share Controller
UC2902D	TI	获取价格	LOAD SHARE CONTROLLER
UC2902DG4	TI	获取价格	LOAD SHARE CONTROLLER
UC2902DTR	TI	获取价格	20V load share controller, -40°C to 85°C 8-SOIC -40 to 85
UC2902DTRG4	TI	获取价格	1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8, GREEN, SOIC-8
UC2902N	TI	获取价格	LOAD SHARE CONTROLLER
UC2902PW	TI	获取价格	IC 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8, TSSOP-8, Power Management Circuit
UC2902PWR	TI	获取价格	1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8, TSSOP-8
UC2903	TI	获取价格	Quad Supply and Line Monitor
UC2903DW	TI	获取价格	Quad Supply and Line Monitor