LM5045
- Highest Integration Controller for Small Form
Factor, High-Density Power Converters - High-Voltage Start-Up Regulator
- Intelligent Sync Rectifier Start-Up Allows Linear
Turnon Into Prebiased Loads - Synchronous Rectifiers Disabled in UVLO mode and
Hiccup Mode - Two Independent, Programmable Synchronous Rectifier
Dead-Time Adjustments - Four High-Current 2-A Bridge Gate Drivers
- Wide-Bandwidth Optocoupler Interface
- Configurable for Either Current Mode or Voltage
Mode Control - Dual-Mode Overcurrent Protection
- Resistor Programmed 2-MHz Oscillator
- Programmable Line UVLO and OVP
The LM5045 PWM controller contains all of the features necessary to implement full-bridge topology power converters using either current mode or voltage mode control. This device is intended to operate on the primary side of an isolated DC-DC converter with input voltage up to 100 V. This highly integrated controller-driver provides dual 2-A high-side and low-side gate drivers for the four external bridge MOSFETs plus control signals for the secondary-side synchronous rectifier MOSFETs. External resistors program the leading and trailing edge dead-time between the main and synchronous rectifier control signals. Intelligent start-up of the synchronous rectifiers allows monotonic turnon of the power converter even with prebias load conditions. Additional features include cycle-by-cycle current limiting, hiccup mode restart, programmable soft-start, synchronous rectifier soft-start, and a 2-MHz capable oscillator with synchronization capability and thermal shutdown.
기술 자료
유형 | 직함 | 날짜 | ||
---|---|---|---|---|
* | Data sheet | LM5045 Full-Bridge PWM Controller With Integrated MOSFET Drivers datasheet (Rev. H) | PDF | HTML | 2015/01/28 |
Selection guide | Power Management Guide 2018 (Rev. R) | 2018/06/25 | ||
User guide | AN-2111 LM5045 Evaluation Board (Rev. C) | 2013/05/06 | ||
Application note | AN-2213 LM5045 Based 240W Power Converter Using Full-Wave (Rev. A) | 2013/05/06 | ||
Application note | Applying I2C-Compatible Temperature Sensors in Systems With Slow Clock Edges (Rev. A) | 2013/05/06 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
LM5045EVAL — LM5045용 평가 보드
PMP31092 — 로우 프로파일 140W 풀 브리지 레퍼런스 설계
패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
---|---|---|
HTSSOP (PWP) | 28 | Ultra Librarian |
WQFN (RSG) | 28 | Ultra Librarian |
주문 및 품질
- RoHS
- REACH
- 디바이스 마킹
- 납 마감/볼 재질
- MSL 등급/피크 리플로우
- MTBF/FIT 예측
- 물질 성분
- 인증 요약
- 지속적인 신뢰성 모니터링
- 팹 위치
- 조립 위치