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UCC2817, UCC2818, UCC3817, UCC3818

BiCMOS POWER FACTOR PREREGULATOR

SLUS395E - FEBRUARY 2000 - REVISED APRIL 2001

D

Controls Boost Preregulator to Near-Unity

D

Power Factor

Limits Line Distortion

World Wide Line Operation

Over-Voltage Protection

Accurate Power Limiting

Average Current Mode Control

Improved Noise Immunity

Improved Feed-Forward Line Regulation

Leading Edge Modulation

150-碌A(chǔ) Typical Start-Up Current

Low-Power BiCMOS Operation

12-V to 17-V Operation

D, DW, and N PACKAGES

(TOP VIEW)

GND

PKLMT

CAOUT

CAI

MOUT

IAC

VAOUT

VFF

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

DRVOUT

VCC

CT

SS

RT

VSENSE

OVP/EN

VREF

description

The UCCx817/18 family 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.

block diagram

VCC

15

OVP/EN

10

16 V (FOR UCC2817 ONLY)

7.5 V

REFERENCE

9

VREF

SS

13

1.9 V

鈥?/div>

+

ZERO POWER

0.33 V

CURRENT

AMP

鈥?/div>

+

鈥?/div>

+

OSC

MIRROR

2:1

CLK

鈥?/div>

+

8.0 V

+

鈥?/div>

PWM

S

Q

PWM

LATCH

R

1

CLK

GND

16

DRVOUT

OVP

X

梅

MULT

X

X2

ENABLE

UVLO

16 V/10 V (UCC2817)

10.5 V/10 V (UCC2818)

VCC

VAOUT

7

VSENSE

11

7.5 V

鈥?/div>

+

VOLTAGE

ERROR AMP

VFF

8

IAC

MOUT

6

5

4

CAI

3

CAOUT

OSCILLATOR

鈥?/div>

+

2

PKLMT

12

RT

14

CT

UDG-98182

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.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Copyright

錚?/div>

2001, Texas Instruments Incorporated

POST OFFICE BOX 655303

鈥?/div>

DALLAS, TEXAS 75265

1

標準包裝
40
類別
集成電路 (IC)
家庭
PMIC - PFC（功率因數(shù)修正）
系列
-
模式
平均電流
頻率 - 開關(guān)
6kHz ~ 220kHz
電流 - 啟動
150µA
電源電壓
9.7 V ~ 18 V
工作溫度
-40°C ~ 85°C
安裝類型
表面貼裝
封裝/外殼
16-SOIC（0.154"，3.90mm 寬）
供應(yīng)商設(shè)備封裝
16-SOIC N
包裝
管件
配用
296-11511-5-ND - EVAL MOD FOR UCC3817-015
其它名稱
296-13428-5

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