UCC2897A

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

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Active-Clamp-PWM-Controller im Strommodus, 110 V, mit FET mit P-Kanal-Klemme und Überspannungsschutz

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Datenblatt

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

UCC2897A

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Datenblatt

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Produktdetails

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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Alle anzeigen 12

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

Design und Entwicklung

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