Datasheet > UCC2897A_15

UCC2897A_15

更新时间： 2024-11-05 01:23:11

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
46页	1412K
描述
Advanced Current-Mode Active-Clamp PWM Controller

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

UCC2897A_15 数据手册

Sample &

Buy

Support &

Community

Reference

Design

Product

Folder

Tools &

Software

Technical

Documents

UCC2897A

SLUS829E –AUGUST 2008–REVISED APRIL 2015

UCC2897A Advanced Current-Mode Active-Clamp PWM Controller

1 Features

3 Description

The

UCC2897A

PWM

controller

simplifies

•

Low-Output Jitter

implementation of the various active clamp or reset

and synchronous rectifier switching power topologies.

Soft-Stop Shutdown of MAIN and AUX

110-V Input Startup Function

The UCC2897A is

a peak current-mode fixed-

Ideal for Active-Clamp, Reset-Forward, Flyback

and Synchronous Rectifier Uses

frequency high-performance pulse-width modulator.

The controller includes the logic and the drive

capability for the P-channel auxiliary switch along with

a simple method of programming the critical delays

for proper active-clamp operation.

•

Provides Complementary Auxiliary Driver with

Programmable Dead Time (Turn-On Delay)

between AUX and MAIN Switches

Peak Current-Mode Control with 0.5-V Cycle-by-

Cycle Current Limiting

Features include an internal programmable slope

compensation circuit, precise D_MAXlimit, and a

synchronizable oscillator with an internal-timing

capacitor. An accurate line-monitoring function also

programs the ON and OFF transitions of the

converter with regard to the bulk input voltage, VIN.

•

TrueDrive™ 2-A Sink, 2-A Source Outputs

Trimmed Internal-Bandgap Reference for

Accurate Line UV and Line OV Threshold

•

Programmable Slope Compensation

The UCC2897A adds a second-level hiccup-mode

High-Performance 1-MHz Synchronizable

Oscillator with Internal Timing Capacitor

current-sense

threshold,

bi-directional

synchronization and input-overvoltage protection

functionalities. The UCC2897A is offered in 20-pin

TSSOP (PW) and 20-pin QFN (RGP) packages.

•

Precise Programmable Maximum Duty Cycle

PB-Free Lead Finish Package

Device Information⁽¹⁾

2 Applications

PART NUMBER

PACKAGE

TSSOP (20)

VQFN (20)

BODY SIZE (NOM)

6.60 mm x 6.60 mm

4.15 mm x 4.15 mm

•

High-Efficiency DC-to-DC Power Supplies

UCC2897A

Server Power, 48-V Telecom, Datacom, and 42-V

Automotive Applications

(1) For all available packages, see the orderable addendum at

the end of the datasheet.

Typical Application Diagram

BIAS

WINDING

UCC2897A

R_DEL

+VIN

VIN

RDEL

L_O

LINEOV

LINEUV

R_ON

LOAD

C_O

RTON

RTOFF

VREF

SYNC

GND

R_OFF

VDD 17

C_BIAS

R_OUT

PVDD 16

C_VREF

DRIVE

OUT

C_AUX

C_F

R_SLOPE

D_AUX

AUX

10 RSLOPE PGND 13

12 SS/SD FB 11

SECONDARY

SIDE E/A

C_SS

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

12 3 4 5 6 7...46

中文翻译

下载PDF

与UCC2897A_15相关器件

型号	品牌	获取价格	描述	数据表
UCC2897APW	TI	获取价格	Advanced Current-Mode Active-Clamp PWM Controller
UCC2897APWR	TI	获取价格	ADVANCED CURRENT-MODE ACTIVE CLAMP PWM CONTROLLER
UCC2897ARGP	TI	获取价格	2.5A SWITCHING CONTROLLER, 270kHz SWITCHING FREQ-MAX, PQCC20, GREEN, PLASTIC, QFN-20
UCC2897ARGPR	TI	获取价格	ADVANCED CURRENT-MODE ACTIVE CLAMP PWM CONTROLLER
UCC2897ARGPT	TI	获取价格	ADVANCED CURRENT-MODE ACTIVE CLAMP PWM CONTROLLER
UCC2897PW	TI	获取价格	ADVANCED CURRENT MODE ACTIVE CLAMP PWM CONTROLLER
UCC2897PWR	TI	获取价格	Current Mode Active Clamp PWM Controller 20-TSSOP -40 to 105
UCC2897PWRG4	TI	获取价格	Current Mode Active Clamp PWM Controller 20-TSSOP -40 to 105
UCC2897RTJ	TI	获取价格	IC 2.5 A SWITCHING CONTROLLER, 270 kHz SWITCHING FREQ-MAX, PQCC20, GREEN, PLASTIC, QFN-20,
UCC2897RTJR	TI	获取价格	Current Mode Active Clamp PWM Controller 20-QFN -40 to 105

与UCC2897A_15相关文章

英伟达新AI芯片Rubin或提前半年亮相
2024-11-05

13
苹果iPhone 17将全系采用三星/LG显示LTPO OLED面板
2024-11-05

7
三星深化印度制造布局，供应链本地化进程加速
2024-10-29

35
芯擎科技“星辰一号”自动驾驶芯片点亮成功，2025年量产在即
2024-10-29

31

产品中心

服务支持

精选活动

关于我们

帮助中心

UCC2897A_15

UCC2897A_15 数据手册

与UCC2897A_15相关器件

与UCC2897A_15相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

UCC2897A_15

UCC2897A_15 数据手册

与UCC2897A_15相关器件

与UCC2897A_15相关文章

您还可以找

您在本页遇到什么问题？