전원 관리 AC/DC 및 DC/DC 컨트롤러(외장 FET)

LM5025C

활성

P 또는 N채널 클램프 FET 및 90% 최대 듀티 사이클을 지원하는 90V 액티브 클램프 전압 모드 PWM 컨트롤러

제품 상세 정보

Vin (max) (V) 15 Operating temperature range (°C) -40 to 125 Control mode Feedforward Topology Active-clamp forward, Forward Rating Catalog Features Current limiting, High-voltage startup, Leading edge blanking, Soft start, Supports NFET clamp, Supports PFET clamp, Thermal shutdown Duty cycle (max) (%) 91
Vin (max) (V) 15 Operating temperature range (°C) -40 to 125 Control mode Feedforward Topology Active-clamp forward, Forward Rating Catalog Features Current limiting, High-voltage startup, Leading edge blanking, Soft start, Supports NFET clamp, Supports PFET clamp, Thermal shutdown Duty cycle (max) (%) 91
TSSOP (PW) 16 32 mm² 5 x 6.4
  • Internal Start-Up Bias Regulator
  • 3A Compound Main Gate Driver
  • Programmable Line Under-Voltage Lockout (UVLO) with Adjustable Hysteresis
  • Voltage Mode Control with Feed-Forward
  • Adjustable Dual Mode Over-Current Protection
  • Programmable Overlap or Deadtime between the Main and Active Clamp Outputs
  • Volt x Second Clamp
  • Programmable Soft-start
  • Leading Edge Blanking
  • Single Resistor Programmable Oscillator
  • Oscillator UP / DOWN Sync Capability
  • Precision 5V Reference
  • Thermal Shutdown

Package

  • TSSOP-16

All trademarks are the property of their respective owners.

  • Internal Start-Up Bias Regulator
  • 3A Compound Main Gate Driver
  • Programmable Line Under-Voltage Lockout (UVLO) with Adjustable Hysteresis
  • Voltage Mode Control with Feed-Forward
  • Adjustable Dual Mode Over-Current Protection
  • Programmable Overlap or Deadtime between the Main and Active Clamp Outputs
  • Volt x Second Clamp
  • Programmable Soft-start
  • Leading Edge Blanking
  • Single Resistor Programmable Oscillator
  • Oscillator UP / DOWN Sync Capability
  • Precision 5V Reference
  • Thermal Shutdown

Package

  • TSSOP-16

All trademarks are the property of their respective owners.

The LM5025C is a functional variant of the LM5025 active clamp PWM controller. The functional differences of the LM5025C are: The maximum duty cycle of the LM5025C is increased from 80% to 91%. The soft-start capacitor charging current is increased from 20 µA to 90 µA. The VCC regulator current limit threshold is increased from 25 mA to 55 mA. The CS1 and CS2 current limit thresholds have been increased to 0.5V. The internal CS2 filter discharge device has been disabled and no longer operates each clock cycle. The internal VCC and VREF regulators continue to operate when the line UVLO pin is below threshold.

The LM5025C PWM controller contains all of the features necessary to implement power converters utilizing the Active Clamp / Reset technique. With the active clamp technique, higher efficiencies and greater power densities can be realized compared to conventional catch winding or RDC clamp / reset techniques. Two control outputs are provided, the main power switch control (OUT_A) and the active clamp switch control (OUT_B). The two internal compound gate drivers parallel both MOS and Bipolar devices, providing superior gate drive characteristics. This controller is designed for high-speed operation including an oscillator frequency range up to 1MHz and total PWM and current sense propagation delays less than 100 ns. The LM5025C includes a high-voltage start-up regulator that operates over a wide input range of 13V to 90V. Additional features include: Line Under Voltage Lockout (UVLO), softstart, oscillator UP/DOWN sync capability, precision reference and thermal shutdown.

The LM5025C is a functional variant of the LM5025 active clamp PWM controller. The functional differences of the LM5025C are: The maximum duty cycle of the LM5025C is increased from 80% to 91%. The soft-start capacitor charging current is increased from 20 µA to 90 µA. The VCC regulator current limit threshold is increased from 25 mA to 55 mA. The CS1 and CS2 current limit thresholds have been increased to 0.5V. The internal CS2 filter discharge device has been disabled and no longer operates each clock cycle. The internal VCC and VREF regulators continue to operate when the line UVLO pin is below threshold.

The LM5025C PWM controller contains all of the features necessary to implement power converters utilizing the Active Clamp / Reset technique. With the active clamp technique, higher efficiencies and greater power densities can be realized compared to conventional catch winding or RDC clamp / reset techniques. Two control outputs are provided, the main power switch control (OUT_A) and the active clamp switch control (OUT_B). The two internal compound gate drivers parallel both MOS and Bipolar devices, providing superior gate drive characteristics. This controller is designed for high-speed operation including an oscillator frequency range up to 1MHz and total PWM and current sense propagation delays less than 100 ns. The LM5025C includes a high-voltage start-up regulator that operates over a wide input range of 13V to 90V. Additional features include: Line Under Voltage Lockout (UVLO), softstart, oscillator UP/DOWN sync capability, precision reference and thermal shutdown.

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기술 자료

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3개 모두 보기
유형 직함 날짜
* Data sheet LM5025C Active Clamp Voltage Mode PWM Controller datasheet (Rev. C) 2013/03/21
White paper Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) PDF | HTML 2024/04/30
User guide LM5025 Isolated Active Clamp Forward Converter Ref Design User Guide 2012/01/27

설계 및 개발

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시뮬레이션 모델

LM5025C TINA-TI Reference Design

SNVM508.TSC (1249 KB) - TINA-TI Reference Design
시뮬레이션 모델

LM5025C TINA-TI Transient Spice Model

SNVM507.ZIP (27 KB) - TINA-TI Spice Model
시뮬레이션 모델

LM5025C Unencrypted PSpice Transient Model Package (Rev. A)

SNVM479A.ZIP (46 KB) - PSpice Model
패키지 CAD 기호, 풋프린트 및 3D 모델
TSSOP (PW) 16 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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