UCC2897A

Name: UCC2897A
Brand: TI
SKU: UCC2897A
Price: 1.109 USD

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具有 P 沟道钳位 FET 和线路过压保护的 110V 有源钳位电流模式 PWM 控制器

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数据表

document-pdfAcrobat UCC2897A Advanced Current-Mode Active-Clamp PWM Controller 数据表 (Rev. G) (英语) PDF | HTML

UCC2897A

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数据表

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产品详情

Vin (max) (V)

16

Operating temperature range (°C)

-40 to 125

Control mode

Current

Topology

Active-clamp forward

Rating

Catalog

Features

High-voltage startup, Input line monitor, Programmable slope compensation, Soft start, Soft switching, Supports PFET clamp

Duty cycle (max) (%)

74

Vin (max) (V)

16

Operating temperature range (°C)

-40 to 125

Control mode

Current

Topology

Active-clamp forward

Rating

Catalog

Features

High-voltage startup, Input line monitor, Programmable slope compensation, Soft start, Soft switching, Supports PFET clamp

Duty cycle (max) (%)

74

TSSOP (PW)

20

41.6 mm² 6.5 x 6.4

VQFN (RGP)

20

16 mm² 4 x 4

Low-output jitter
Soft-stop shutdown of MAIN and AUX
110-V input startup function
Ideal for active-clamp, reset-forward, flyback and synchronous rectifier uses
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
TrueDrive™ 2-A Sink, 2-A source outputs
Trimmed internal-bandgap reference for accurate line UV and line OV threshold
Programmable slope compensation
High-performance 1-MHz synchronizable oscillator with internal timing capacitor
Precise programmable maximum duty cycle
PB-free lead finish package

Low-output jitter
Soft-stop shutdown of MAIN and AUX
110-V input startup function
Ideal for active-clamp, reset-forward, flyback and synchronous rectifier uses
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
TrueDrive™ 2-A Sink, 2-A source outputs
Trimmed internal-bandgap reference for accurate line UV and line OV threshold
Programmable slope compensation
High-performance 1-MHz synchronizable oscillator with internal timing capacitor
Precise programmable maximum duty cycle
PB-free lead finish package

The UCC2897A PWM controller simplifies implementation of the various active clamp or reset and synchronous rectifier switching power topologies.

The UCC2897A is a peak current-mode fixed-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.

Features include an internal programmable slope compensation circuit, precise D_MAX limit, 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.

The UCC2897A adds a second-level hiccup-mode 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.

The UCC2897A PWM controller simplifies implementation of the various active clamp or reset and synchronous rectifier switching power topologies.

The UCC2897A is a peak current-mode fixed-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.

Features include an internal programmable slope compensation circuit, precise D_MAX limit, 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.

The UCC2897A adds a second-level hiccup-mode 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.

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	类型	标题		日期
*	数据表	UCC2897A Advanced Current-Mode Active-Clamp PWM Controller 数据表 (Rev. G)	PDF \| HTML	2019年 1月 27日
	应用手册	Understanding and Designing an Active Clamp Current Mode Controlled Converter (Rev. A)		2020年 1月 27日
	选择指南	电源管理指南 2018 (Rev. K)		2018年 7月 31日
	选择指南	电源管理指南 2018 (Rev. R)		2018年 6月 25日
	应用手册	Slope Compensation Design for UCC2897A		2017年 10月 30日
	技术文章	Flyback converters: two outputs are better than one	PDF \| HTML	2016年 11月 24日
	技术文章	Excuse me for being a little forward... with my topology	PDF \| HTML	2015年 10月 21日
	应用手册	UCC2897A Peak Current Mode Active Clamp Forward Converter Small Signal Modeling		2014年 1月 17日
	应用手册	External Slope Compensation for UCC2897A in Some Special Applications		2010年 1月 5日
	应用手册	Method of Providing Hiccup Operation for UCC2897AEVM		2009年 8月 27日
	EVM 用户指南	Using the UCC2897AEVM		2009年 2月 27日
	更多文献资料	Seminar 1000 Topic 3 - Active Clamp and Reset Technique		2001年 2月 15日
	更多文献资料	Seminar 1100 Topic 3 - Design Considerations for Active Clamp and Reset		2001年 2月 15日

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