UCC2819

更新时间： 2024-11-23 22:59:31

品牌	Logo	应用领域
德州仪器 - TI		调节器输出元件
页数	文件大小	规格书
10页	156K
描述
PROGRAMMABLE OUTPUT POWER FACTOR PREREGULATOR

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中文翻译

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数据手册

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UCC2819 数据手册

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SLUS482B - APRIL 2001 − REVISED DECEMBER 2004

Controls Boost Preregulator to Near-Unity

Power Factor

D, DW, N, and PW PACKAGES

(TOP VIEW)

World Wide Line Operation

Over-Voltage Protection

GND

PKLMT

CAOUT

CAI

DRVOUT

VCC

Accurate Power Limiting

Average Current Mode Control

Improved Noise Immunity

VAI

MOUT

IAC

Improved Feed-Forward Line Regulation

Leading Edge Modulation

11 VSENSE

10 OVP/EN

VAOUT

VFF

VREF

150-µA Typical Start-Up Current

Low-Power BiCMOS Operation

10.8-V to 17-V Operation

Programmable Output Voltage (Tracking

Boost Topology)

description

The UCC2819/UCC3819 provides all the functions necessary for active power factor corrected preregulators.

The controller achieves near unity power factor by shaping the ac-input line current waveform to correspond

to that of the ac-input line voltage. Average current mode control maintains stable, low distortion sinusoidal line

current.

Designed in Texas Instrument’s BiCMOS process, the UCC3819 offers new features such as lower start-up

current, lower power dissipation, overvoltage protection, a shunt UVLO detect circuitry and a leading-edge

modulation technique to reduce ripple current in the bulk capacitor.

The UCC3819 allows the output voltage to be programmed by bringing out the error amplifier noninverting input.

Available in the 16-pin D, DW, N, and PW packages.

block diagram

VCC

OVP/EN 10

7.5 V

REFERENCE

VREF

1.9 V

ENABLE

−

UVLO

VAOUT

10.2 V/9.7 V

ZERO POWER

0.33 V

VCC

−

VOLTAGE

ERROR AMP

VSENSE 11

VAI 13

−

CURRENT

AMP

8.0 V

PWM

OVP

−

MULT

−

16 DRVOUT

−

VFF

PWM

LATCH

OSC

CLK

MIRROR

2:1

GND

CLK

IAC

PKLMT

−

OSCILLATOR

MOUT

UDG-01009

CAI

CAOUT RT

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

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与UCC2819相关器件

型号	品牌	获取价格	描述	数据表
UCC2819A	TI	获取价格	PROGRAMMABLE OUTPUT POWER FACTOR PREREGULATOR
UCC2819AD	TI	获取价格	PROGRAMMABLE OUTPUT POWER FACTOR PREREGULATOR
UCC2819ADG4	TI	获取价格	PROGRAMMABLE OUTPUT POWER FACTOR PREREGULATOR
UCC2819ADR	TI	获取价格	PROGRAMMABLE OUTPUT POWER FACTOR PREREGULATOR
UCC2819ADRG4	TI	获取价格	PROGRAMMABLE OUTPUT POWER FACTOR PREREGULATOR
UCC2819AN	TI	获取价格	PROGRAMMABLE OUTPUT POWER FACTOR PREREGULATOR
UCC2819ANG4	TI	获取价格	PROGRAMMABLE OUTPUT POWER FACTOR PREREGULATOR
UCC2819APW	TI	获取价格	PROGRAMMABLE OUTPUT POWER FACTOR PREREGULATOR
UCC2819APWG4	TI	获取价格	PROGRAMMABLE OUTPUT POWER FACTOR PREREGULATOR
UCC2819APWR	TI	获取价格	PROGRAMMABLE OUTPUT POWER FACTOR PREREGULATOR

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