UCC2897A

Name: UCC2897A
Brand: TI
SKU: UCC2897A
Price: 1.197 USD

AKTIV

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

Jetzt bestellen

Datenblatt

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

UCC2897A

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Topology

Active-clamp forward

Control mode

Current

Features

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

Duty cycle (max) (%)

74

Topology

Active-clamp forward

Control mode

Current

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.

filter

Andere AC/DC controllers suchen

Herunterladen Video mit Transkript ansehen Video

Technische Dokumentation

star

=Von TI ausgewählte Top-Empfehlungen für dieses Produkt

Keine Ergebnisse gefunden. Bitte geben Sie einen anderen Begriff ein und versuchen Sie es erneut.

Alle anzeigen 11

	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
	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

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

Evaluierungsplatine

TPS2372-4EVM-006 — TPS2372-4EVM Evaluierungsmodul für IEEE802.3bt PoE-PD-Anwendungen

Das TPS2372-Evaluierungsmodul (TPS2372-4EVM-006) umfasst Evaluierungs- und Referenzschaltkreise für den TPS2372, einen IEEE802.3bt-konformen PoE-PD-Controller für Hochleistungs-PoE-PD-Anwendungen wie LED-Beleuchtung und -Module.

Sie benötigen einen IEEE802.3bt-konformen PSE-Controller? Sehen Sie (...)

Benutzerhandbuch: PDF

Nicht verfügbar auf TI.com

Evaluierungsplatine

TPS2373-4EVM-758 — TPS2373-4 Evaluierungsmodul für IEEE802.3bt PoE-PD-Anwendungen

Das TPS2373 Evaluierungsmodul (TPS2373-4EVM-758) umfasst Evaluierungs- und Referenzschaltkreise für den TPS2373, einen IEEE802.3bt-konformen PoE-PD-Controller für Hochleistungs-PoE-PD-Anwendungen. Das EVM ist mit einem isolierten Wandler mit 5 V Active-Clamp-Forward für hocheffiziente PD-Lösungen (...)

Benutzerhandbuch: PDF | HTML

Nicht verfügbar auf TI.com

Evaluierungsplatine

UCC2897AEVM — UCC2897A-Evaluierungsmodul

The UCC2897A evaluation module (EVM) is an active clamp reset forward converter providing a 3.3-V regulated output at 30 A of load current, operating from a 48-V input. The design operates over the full 36-V to 72-V telecom input range, and is able to fully regulate down to zero load current. The (...)

Benutzerhandbuch: PDF