- 您现在的位置：买卖IC网 > PDF目录199556 > UCC28221PWRG4 (TEXAS INSTRUMENTS INC) 0.01 A DUAL SWITCHING CONTROLLER, 1100 kHz SWITCHING FREQ-MAX, PDSO20 PDF资料下载
参数资料
| 型号： | UCC28221PWRG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 0.01 A DUAL SWITCHING CONTROLLER, 1100 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封装： | GREEN, PLASTIC, TSSOP-20 |
| 文件页数： | 1/31页 |
| 文件大小： | 755K |
| 代理商： | UCC28221PWRG4 |
当前第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页
UCC28220, UCC28221
SLUS544E SEPTEMBER 2003 REVISED MARCH 2009
INTERLEAVED DUAL PWM CONTROLLER
WITH PROGRAMMABLE MAX DUTY CYCLE
1
www.ti.com
FEATURES
D 2-MHz High Frequency Oscillator with 1-MHz
Operation Per Channel
D Matched Internal Slope Compensation
Circuits
D Programmable Maximum Duty Cycle Clamp
60% to 90% Per Channel
D Peak Current Mode Control with
Cycle-by-Cycle Current Limit
D Current Sense Discharge Transistor for
Improved Noise Immunity
D Accurate Line Under and Over-Voltage Sense
with Programmable Hysteresis
D Opto-Coupler Interface
D 110-V Internal Start-Up JFET (UCC28221)
D Operates from 12-V Supply (UCC28220)
D Programmable Soft-Start
APPLICATIONS
D High Output Current (50-A to 100-A)
Converters
D Maximum Power Density Designs
D High Efficiency 48-V Input with Low Output
Ripple Converters
D High Power Offline, Telecom and Datacom
Power Supplies
DESCRIPTION
The UCC28220 and UCC28221 are a family of BiCMOS
interleaved dual channel PWM controllers. Peak
current mode control is used to ensure current sharing
between the two channels. A precise maximum duty
cycle clamp can be set to any value between 60% and
90% duty cycle per channel.
UCC28220 has an UVLO turn-on threshold of 10 V for
use in 12-V supplies while UCC28221 has a turn-on
threshold of 13 V for systems needing wider UVLO
hysteresis. Both have 8-V turn-off thresholds.
TYPICAL APPLICATION
UCC28221
3
7
6
4
5
1
8
15
11
12
14
13
9
10
VDD
CS1
SLOPE
CS2
SS
CTRL
LINEOV
LINEUV
OUT1
OUT2
CHG
DISCHG
Bias
E/A
2
16
LINE
VIN
(+48V)
REF
GND
CS1
VOUT
REF
1/2 UCC27324
CS2
HYS
NOTE: Pin 16 is a no connect (N/C) on UCC28220 which does not include the JFET option.
Copyright
2004 2008, Texas Instruments Incorporated
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.
相关PDF资料 |
PDF描述 |
|---|---|
| UCC35706DGKG4 | 0.02 A SWITCHING CONTROLLER, 4000 kHz SWITCHING FREQ-MAX, PDSO8 |
| UCC35706DTR | 0.02 A SWITCHING CONTROLLER, 4000 kHz SWITCHING FREQ-MAX, PDSO8 |
| UCC3825ADW | 2 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16 |
| UCK4-TDY | 4-OUTPUT 600 W AC-DC PWR FACTOR CORR MODULE |
| UDA1330ATS/N2,112 | Low-cost stereo filter DAC; Package: SOT369-1 (SSOP16); Container: Tube |
相关代理商/技术参数 |
参数描述 |
|---|---|
| UCC28230 | 制造商:TI 制造商全称:Texas Instruments 功能描述:Advanced PWM Controller for Bus Converters |
| UCC28230_0806 | 制造商:TI 制造商全称:Texas Instruments 功能描述:Advanced PWM Controller for Bus Converters |
| UCC28230DRNR | 功能描述:软开关 PWM 控制器 Adv PWM Cntrlr for Bus Cnvrtrs RoHS:否 制造商:Fairchild Semiconductor 输出端数量: 输出电流: 开关频率: 工作电源电压:30 V 电源电流: 最大工作温度:+ 105 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel |
| UCC28230DRNRG4 | 功能描述:软开关 PWM 控制器 Adv PWM Cntrlr for Bus Cnvrtr RoHS:否 制造商:Fairchild Semiconductor 输出端数量: 输出电流: 开关频率: 工作电源电压:30 V 电源电流: 最大工作温度:+ 105 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel |
| UCC28230DRNT | 功能描述:软开关 PWM 控制器 Adv PWM Cntrlr for Bus Cnvrtrs RoHS:否 制造商:Fairchild Semiconductor 输出端数量: 输出电流: 开关频率: 工作电源电压:30 V 电源电流: 最大工作温度:+ 105 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel |
发布紧急采购，3分钟左右您将得到回复。