UCC2897A

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

활성

P 채널 클램프 FET 및 라인 OV 보호를 지원하는 110V 능동 클램프 전류 모드 PWM 컨트롤러

지금 주문

데이터시트

document-pdfAcrobat UCC2897A Advanced Current-Mode Active-Clamp PWM Controller datasheet (Rev. G) (영어) PDF | HTML

UCC2897A

활성

데이터시트

지금 주문

제품 상세 정보

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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모두 보기12

	유형	직함		날짜
*	Data sheet	UCC2897A Advanced Current-Mode Active-Clamp PWM Controller datasheet (Rev. G)	PDF \| HTML	2019/01/27
	Application note	Understanding and Designing an Active Clamp Current Mode Controlled Converter (Rev. A)		2020/01/27
	Selection guide	Power Management Guide 2018 (Rev. R)		2018/06/25
	Application note	Slope Compensation Design for UCC2897A		2017/10/30
	Technical article	Flyback converters: two outputs are better than one	PDF \| HTML	2016/11/24
	Technical article	Excuse me for being a little forward... with my topology	PDF \| HTML	2015/10/21
	Application note	UCC2897A Peak Current Mode Active Clamp Forward Converter Small Signal Modeling		2014/01/17
	Application note	External Slope Compensation for UCC2897A in Some Special Applications		2010/01/05
	Application note	Method of Providing Hiccup Operation for UCC2897AEVM		2009/08/27
	EVM User's guide	Using the UCC2897AEVM		2009/02/27
	More literature	Seminar 1000 Topic 3 - Active Clamp and Reset Technique		2001/02/15
	More literature	Seminar 1100 Topic 3 - Design Considerations for Active Clamp and Reset		2001/02/15

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