전원 관리 AC/DC 및 DC/DC 컨트롤러(외장 FET)

UCC3889

활성

오프라인 전원 공급 장치 컨트롤러, 0C~70C

제품 상세 정보

Vin (max) (V) 9.3 Operating temperature range (°C) 0 to 70 Control mode Feedforward Topology Flyback Rating Catalog Features Error amplifier, Soft start Duty cycle (max) (%) 55
Vin (max) (V) 9.3 Operating temperature range (°C) 0 to 70 Control mode Feedforward Topology Flyback Rating Catalog Features Error amplifier, Soft start Duty cycle (max) (%) 55
SOIC (D) 8 29.4 mm² 4.9 x 6
  • Transformerless Off-line Applications
  • Ideal Primary-side Bias Supply
  • Efficient BiCMOS Design
  • Wide Input Range
  • Fixed or Adjustable Low Voltage Output
  • Uses Low Cost SMD Inductors
  • Short Circuit Protected
  • Optional Isolation Capability

  • Transformerless Off-line Applications
  • Ideal Primary-side Bias Supply
  • Efficient BiCMOS Design
  • Wide Input Range
  • Fixed or Adjustable Low Voltage Output
  • Uses Low Cost SMD Inductors
  • Short Circuit Protected
  • Optional Isolation Capability

The UCC1889 controller is optimized for use as an off-line, low power, low voltage, regulated bias supply. The unique circuit topology utilized in this device can be visualized as two cascaded flyback converters, each operating in the discontinuous mode, and both driven from a single external power switch. The significant benefit of this approach is the ability to achieve voltage conversion ratios of 400V to 12V with no transformer and low internal losses.

The control algorithm utilized by the UCC1889 is to force the switch on time to be inversely proportional to the input line voltage while the switch off time is made inversely proportional to the output voltage. This action is automatically controlled by an internal feedback loop and reference. The cascaded configuration allows a voltage conversion from 400V to 12V to be achieved with a switch duty cycle greater than 10%. This topology also offers inherent short circuit protection since as the output voltage falls to zero, the switch off time approaches infinity.

The output voltage can be easily set to 12V or 18V. Moreover, it can be programmed for other output voltages less than 18V with a few additional components. An isolated version can be achieved with this topology as described further in Unitrode Application Note U-149.

The UCC1889 controller is optimized for use as an off-line, low power, low voltage, regulated bias supply. The unique circuit topology utilized in this device can be visualized as two cascaded flyback converters, each operating in the discontinuous mode, and both driven from a single external power switch. The significant benefit of this approach is the ability to achieve voltage conversion ratios of 400V to 12V with no transformer and low internal losses.

The control algorithm utilized by the UCC1889 is to force the switch on time to be inversely proportional to the input line voltage while the switch off time is made inversely proportional to the output voltage. This action is automatically controlled by an internal feedback loop and reference. The cascaded configuration allows a voltage conversion from 400V to 12V to be achieved with a switch duty cycle greater than 10%. This topology also offers inherent short circuit protection since as the output voltage falls to zero, the switch off time approaches infinity.

The output voltage can be easily set to 12V or 18V. Moreover, it can be programmed for other output voltages less than 18V with a few additional components. An isolated version can be achieved with this topology as described further in Unitrode Application Note U-149.

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관심 가지실만한 유사 제품

open-in-new 대안 비교
비교 대상 장치와 유사한 기능
UCC28C53 활성 산업용, 30V, 저전력 전류 모드 PWM 컨트롤러, 8.4V/7.6V UVLO, 100% 듀티 사이클 Supports Buck, Boost, Flyback topologies

기술 자료

star =TI에서 선정한 이 제품의 인기 문서
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5개 모두 보기
유형 직함 날짜
* Data sheet Off-line Power Supply Controller datasheet (Rev. A) 2003/02/20
Selection guide Power Management Guide 2018 (Rev. R) 2018/06/25
User guide Off-Line Low-Voltage Power Supply Evaluation Module UCC3889EVM-001 for TMS320C24 2001/12/12
Application note DN-59A UCC3889 Bias Supply Controller EVM Kit - Schematic 1999/09/05
Application note U-149 Elegantly Simple Off-Line Bias Supply for Very Low Power Applications 1999/09/05

설계 및 개발

추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.

패키지 CAD 기호, 풋프린트 및 3D 모델
SOIC (D) 8 Ultra Librarian

주문 및 품질

포함된 정보:
  • RoHS
  • REACH
  • 디바이스 마킹
  • 납 마감/볼 재질
  • MSL 등급/피크 리플로우
  • MTBF/FIT 예측
  • 물질 성분
  • 인증 요약
  • 지속적인 신뢰성 모니터링
포함된 정보:
  • 팹 위치
  • 조립 위치

지원 및 교육

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