UCC2895

활성

향상된 제어 로직, -40°C~85°C를 지원하는 위상 변이 풀 브리지 컨트롤러

지금 주문

데이터 시트

document-pdfAcrobat UCCx895 BiCMOS Advanced Phase-Shift PWM Controller datasheet (Rev. Q) (영어) PDF | HTML

UCC2895

활성

데이터 시트

지금 주문

제품 상세 정보

Vin (max) (V)

16.5

Operating temperature range (°C)

-40 to 85

Control mode

Current, Feedforward, Voltage

Topology

Phase-shifted full bridge

Rating

Catalog

Features

Adjustable switching frequency, Current limiting, Error amplifier, Multi-topology, Soft start, Soft switching, Synchronization pin

Duty cycle (max) (%)

100

Vin (max) (V)

16.5

Operating temperature range (°C)

-40 to 85

Control mode

Current, Feedforward, Voltage

Topology

Phase-shifted full bridge

Rating

Catalog

Features

Adjustable switching frequency, Current limiting, Error amplifier, Multi-topology, Soft start, Soft switching, Synchronization pin

Duty cycle (max) (%)

100

PDIP (N)

20

228.702 mm² 24.33 x 9.4

SOIC (DW)

20

131.84 mm² 12.8 x 10.3

TSSOP (PW)

20

41.6 mm² 6.5 x 6.4

Programmable-output turnon delay
Adaptive delay set
Bidirectional oscillator synchronization
Voltage-mode, peak current-mode, or average current-mode control
Programmable soft start, soft stop, and chip disable via a single pin
0% to 100% duty-cycle control
7-MHz error amplifier
Operation to 1 MHz
Typical 5-mA operating current at 500 kHz
Very low 150-µA current during UVLO

Programmable-output turnon delay
Adaptive delay set
Bidirectional oscillator synchronization
Voltage-mode, peak current-mode, or average current-mode control
Programmable soft start, soft stop, and chip disable via a single pin
0% to 100% duty-cycle control
7-MHz error amplifier
Operation to 1 MHz
Typical 5-mA operating current at 500 kHz
Very low 150-µA current during UVLO

The UCC3895 is a phase-shift PWM controller that implements control of a full-bridge power stage by phase shifting the switching of one half-bridge with respect to the other. The device allows constant frequency pulse-width modulation in conjunction with resonant zero-voltage switching to provide high efficiency at high frequencies. The part is used either as a voltage-mode or current-mode controller.

While the UCC3895 maintains the functionality of the UC3875/6/7/8 family and UC3879, it improves on that controller family with additional features such as enhanced control logic, adaptive delay set, and shutdown capability. Because the device is built using the BCDMOS process, it operates with dramatically less supply current than it’s bipolar counterparts. The UCC3895 operates with a maximum clock frequency of 1 MHz.

The UCC3895 is a phase-shift PWM controller that implements control of a full-bridge power stage by phase shifting the switching of one half-bridge with respect to the other. The device allows constant frequency pulse-width modulation in conjunction with resonant zero-voltage switching to provide high efficiency at high frequencies. The part is used either as a voltage-mode or current-mode controller.

While the UCC3895 maintains the functionality of the UC3875/6/7/8 family and UC3879, it improves on that controller family with additional features such as enhanced control logic, adaptive delay set, and shutdown capability. Because the device is built using the BCDMOS process, it operates with dramatically less supply current than it’s bipolar counterparts. The UCC3895 operates with a maximum clock frequency of 1 MHz.

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기타 AC/DC 및 DC/DC 컨트롤러(외장 FET) 찾기

다운로드 스크립트와 함께 비디오 보기 동영상

관심 가지실만한 유사 제품

open-in-new

대안 비교

다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능

UCC28951

활성

넓은 입력 전압 범위를 위한 SR 제어 기능을 갖춘 그린 위상 전환 풀 브리지 컨트롤러 SR control, better light load efficiency, and programmable delays for ZVS

기술 자료

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15개 모두 보기

	유형	직함		날짜
*	Data sheet	UCCx895 BiCMOS Advanced Phase-Shift PWM Controller datasheet (Rev. Q)	PDF \| HTML	2019/10/09
	Application note	Phase Shifted Full Bridge, Zero Voltage Transition Design Considerations (Rev. A)		2011/01/22
	Analog Design Journal	3Q 2010 Issue Analog Applications Journal		2010/08/11
	Analog Design Journal	Computing power going “Platinum”		2010/08/11
	Application note	UCC2895 Layout and Grounding Recommendations		2009/04/09
	EVM User's guide	UCC3895EVM-001 Configuring The UCC3895 For Direct Control Driven Synchronous Re (Rev. B)		2008/12/02
	Application note	Current Doubler Rectifier Offers Ripple Current Cancellation		2004/09/21
	Application note	Synchronous Rectifiers of a Current Doubler		2003/02/27
	Application note	UCC3895 CD Output Asymmetric Duty Cycle Operation		2002/08/21
	Application note	A Power Management Solution for Efficient, Multiple Output Applications		2001/10/04
	Application note	A Comparison Between the BiCMOS UCC3895 Phase Shift Controller and the UC3875		2001/02/22
	More literature	Seminar 800 Topic 5 - Fixed-Frequency Resonant-Switched PWM		2001/02/15
	More literature	Seminar 900 Topic 3 - Designing a Phase-Shifted ZVT Power Converter		2001/02/15
	More literature	Seminar 900 Topic 4 - 500-W 40-W/in3 Phase-Shifted ZVT Power Converter		2001/02/15
	Application note	DN-63 The Current-Doubler Rectifier: An Alternative Rectification Technique		2001/01/12

설계 및 개발

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평가 보드

UCC3895EVM-001 — UCC3895 평가 모듈

The UCC3895EVM-001 is an isolated 48V input phase shifted full bridge converter providing an output of 3.3V at 15A. Using the AB outputs of the UCC3895, a novel technique for direct control driven synchronous rectification is demonstrated.

사용 설명서: PDF