전력 관리 AC/DC 스위칭 레귤레이터 AC/DC 컨트롤러

UC1856-SP

활성

QML-V, 40V input, 1.5A dual-output 1MHz PWM controller

제품 상세 정보

Topology Boost, Flyback, Forward, Full bridge, Half bridge, Push pull Control mode Current Features Error amplifier, Multi-topology, Soft start, Synchronization pin Duty cycle (max) (%) 50
Topology Boost, Flyback, Forward, Full bridge, Half bridge, Push pull Control mode Current Features Error amplifier, Multi-topology, Soft start, Synchronization pin Duty cycle (max) (%) 50
CDIP (J) 16 135.3552 mm² (— mm × — mm) CFP (HKT) 16 72.136 mm² (0 mm × 0 mm)
  • Pin-for-Pin Compatible With the UC1846
  • 65-ns Typical Delay From Shutdown to Outputs,
    and 50-ns Typical Delay From SYNC to Outputs
  • Improved Current-Sense Amplifier With
    Reduced Noise Sensitivity
  • Differential Current Sense with 3-V Common-Mode Range
  • Trimmed-Oscillator Discharge Current for Accurate
    Deadband Control
  • Accurate 1-V Shutdown Threshold
  • High-Current Dual Totem-Pole Outputs (1.5-A peak)
  • TTL Compatible Oscillator SYNC Pin Thresholds
  • 4-kV ESD Protection
  • Pin-for-Pin Compatible With the UC1846
  • 65-ns Typical Delay From Shutdown to Outputs,
    and 50-ns Typical Delay From SYNC to Outputs
  • Improved Current-Sense Amplifier With
    Reduced Noise Sensitivity
  • Differential Current Sense with 3-V Common-Mode Range
  • Trimmed-Oscillator Discharge Current for Accurate
    Deadband Control
  • Accurate 1-V Shutdown Threshold
  • High-Current Dual Totem-Pole Outputs (1.5-A peak)
  • TTL Compatible Oscillator SYNC Pin Thresholds
  • 4-kV ESD Protection

The UC1856 is a high-performance version of the popular UC1846 series of current-mode controllers, and is intended for both design upgrades and new applications where speed and accuracy are important. All input-to-output delays have been minimized, and the current sense output is slew-rate limited to reduce noise sensitivity. Fast 1.5-A peak output stages have been added to allow rapid switching of power FETs.

A low-impedance TTL-compatible sync output has been implemented with a TRI-STATE function when used as a sync input.

Internal-chip grounding has been improved to minimize internal noise caused when driving large capacitive loads. This improvement, in conjunction with the improved differential current-sense amplifier, results in enhanced noise immunity.

Other features include a trimmed oscillator current (8%) for accurate frequency and dead-time control; a 1-V 5% shutdown threshold; and 4-kV minimum electrostatic discharge (ESD) protection on all pins.

The UC1856 is a high-performance version of the popular UC1846 series of current-mode controllers, and is intended for both design upgrades and new applications where speed and accuracy are important. All input-to-output delays have been minimized, and the current sense output is slew-rate limited to reduce noise sensitivity. Fast 1.5-A peak output stages have been added to allow rapid switching of power FETs.

A low-impedance TTL-compatible sync output has been implemented with a TRI-STATE function when used as a sync input.

Internal-chip grounding has been improved to minimize internal noise caused when driving large capacitive loads. This improvement, in conjunction with the improved differential current-sense amplifier, results in enhanced noise immunity.

Other features include a trimmed oscillator current (8%) for accurate frequency and dead-time control; a 1-V 5% shutdown threshold; and 4-kV minimum electrostatic discharge (ESD) protection on all pins.

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관심 가지실만한 유사 제품

open-in-new 대안 비교
비교 대상 장치와 유사한 기능.
TPS7H5005-SEP 활성 Radiation-tolerant, 2MHz, dual-output PWM controller with synchronous rectification More feature rich radiation-tolerant PWM controller family for LEO or shorter duration missions
TPS7H5001-SP 활성 Radiation-hardened, QML-P and QML-V, 2MHz dual-output PWM controller with synchronous rectification More feature rich QML-qualified radiation-hardened PWM controller family

기술 자료

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12개 모두 보기
상위 문서 유형 직함 형식 옵션 최신 영어 버전 다운로드 날짜
* 데이터 시트 UC1856-SP Improved Current Mode PWM Controller datasheet 2014. 4. 24
* SMD UC1856-SP SMD 5962-94530 2016. 7. 8
선택 가이드 TI Space Products (Rev. L) 2026. 3. 27
애플리케이션 노트 Hermetic Package Reflow Profiles, Termination Finishes, and Lead Trim and Form (Rev. A) PDF | HTML 2025. 11. 5
Application brief DLA Approved Optimizations for QML Products (Rev. C) PDF | HTML 2025. 6. 17
애플리케이션 노트 Heavy Ion Orbital Environment Single-Event Effects Estimations (Rev. B) PDF | HTML 2025. 6. 10
추가 자료 TI Engineering Evaluation Units vs. MIL-PRF-38535 QML Class V Processing (Rev. B) 2025. 2. 20
애플리케이션 노트 QML flow, its importance, and obtaining lot information (Rev. C) 2023. 8. 30
애플리케이션 노트 Single-Event Effects Confidence Interval Calculations (Rev. A) PDF | HTML 2022. 10. 19
Application brief Controlling Input Power for Present and Next-Generation Power Controllers PDF | HTML 2020. 12. 14
애플리케이션 노트 DLA Standard Microcircuit Drawings (SMD) and JAN Part Numbers Primer 2020. 8. 21
e북 Radiation Handbook for Electronics (Rev. A) 2019. 5. 21

설계 및 개발

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패키지 CAD 기호, 풋프린트 및 3D 모델
CDIP (J) 16 Ultra Librarian
CFP (HKT) 16 Ultra Librarian

주문 및 품질

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지원 및 교육

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