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 2A Bridge Gate Drivers
- Wide-Bandwidth Optocoupler Interface
- Configurable for Either Current Mode or Voltage Mode Control
- Dual-Mode Overcurrent Protection
- Resistor Programmed 2MHz 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 100V. This highly integrated controller-driver provides dual 2A 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 2MHz capable oscillator with synchronization capability and thermal shutdown.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | LM5045 Full-Bridge PWM Controller With Integrated MOSFET Drivers datasheet (Rev. I) | PDF | HTML | 2026. 5. 14 | |
| 선택 가이드 | Power Management Guide 2018 (Rev. R) | 2018. 6. 25 | |||
| 사용 설명서 | AN-2111 LM5045 Evaluation Board (Rev. C) | 2013. 5. 6 | |||
| 애플리케이션 노트 | Applying I2C-Compatible Temperature Sensors in Systems With Slow Clock Edges (Rev. A) | 2013. 5. 6 | |||
| 애플리케이션 노트 | AN-2213 LM5045 Based 240W Power Converter Using Full-Wave (Rev. A) | 2013. 5. 6 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
LM5045EVAL — LM5045용 평가 보드
SLUC501 — LM5045 Design Calculator
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
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.