UC1853

更新时间： 2024-11-23 12:47:15

品牌	Logo	应用领域
德州仪器 - TI		稳压器
页数	文件大小	规格书
6页	205K
描述
High Power Factor Preregulator

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UC1853 数据手册

UC1853

UC2853

UC3853

High Power Factor Preregulator

DESCRIPTION

FEATURES

•

Complete 8-pin Power Factor

Solution

The UC3853 provides simple, yet high performance active power factor

correction. Using the same control technique as the UC1854, this 8-pin de-

vice exploits a simplified architecture and an internal oscillator to minimize

external component count. The UC3853 incorporates a precision multi-

plier/squarer/divider circuit, voltage and current loop error amplifiers, and a

precision voltage reference to implement average current mode control

with RMS line voltage compensation. This control technique maintains con-

stant loop gain with changes in input voltage, which minimizes input line

current distortion over the worldwide input voltage range.

•

Reduced External Components

RMS Line Voltage Compensation

Precision Multiplier/Squarer/Divider

Internal 75kHz Synchronizable

Oscillator

The internal 75kHz oscillator includes an external clock input, allowing syn-

chronization to downstream converters. Additionally, the device features an

overvoltage protection comparator, a clamped MOSFET gate driver which

self-biases low during undervoltage lockout, and low startup and supply

•

Average Current Mode PWM

Control

•

Overvoltage Protection Comparator

High Current, Clamped Gate Driver current.

These devices are available in 8-pin plastic and ceramic dual in-line (DIP)

packages, and 8-lead small outline (SOIC) packages. The UC1853 is

specified for operation from –55°C to +125°C, the UC2853 is specified for

operation from –25°C to +85°C, and the UC3853 is specified for operation

from 0°C to +70°C.

BLOCK DIAGRAM

UDG-94120-1

11/97

12 3 4 5 6

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与UC1853相关器件

型号	品牌	获取价格	描述	数据表
UC1853_08	TI	获取价格	High Power Factor Preregulator
UC1853D	ETC	获取价格	Power Factor Controller
UC1853DTR	TI	获取价格	IC,POWER FACTOR CONTROLLER,BIPOLAR,SOP,8PIN
UC1853J	ETC	获取价格	Power Factor Controller
UC1853N	ETC	获取价格	Power Factor Controller
UC1854	TI	获取价格	High Power Factor Preregulator
UC1854_08	TI	获取价格	High Power Factor Preregulator
UC1854_16	TI	获取价格	High Power Factor Preregulator
UC1854A	TI	获取价格	ADVANCED HIGH-POWER FACTOR PREREGULATOR
UC1854A_13	TI	获取价格	ADVANCED HIGH-POWER FACTOR PREREGULATOR