LM5117
- LM5117-Q1 is Qualified for Automotive Applications
- AEC-Q100 Qualified With the Following Results:
- Device Temperature Grade 1: -40°C to 125°C
Ambient Operating Temperature Range
- Device Temperature Grade 1: -40°C to 125°C
- Emulated Peak Current Mode Control
- Wide Operating Range from 5.5 V to 65 V
- Robust 3.3-A Peak Gate Drives
- Adaptive Dead-Time Output Driver Control
- Free-Run or Synchronizable Clock up to 750 kHz
- Optional Diode Emulation Mode
- Programmable Output from 0.8 V
- Precision 1.5% Voltage Reference
- Analog Current Monitor
- Programmable Current Limit
- Hiccup Mode Overcurrent Protection
- Programmable Soft-Start and Tracking
- Programmable Line Undervoltage Lockout
- Programmable Switchover to External Bias Supply
- Thermal Shutdown
The LM5117 is a synchronous buck controller intended for step-down regulator applications from a high voltage or widely varying input supply. The control method is based upon current mode control utilizing an emulated current ramp. Current mode control provides inherent line feed-forward, cycle-by-cycle current limiting and ease of loop compensation. The use of an emulated control ramp reduces noise sensitivity of the pulse-width modulation circuit, allowing reliable control of very small duty cycles necessary in high input voltage applications.
The operating frequency is programmable from 50 kHz to 750 kHz. The LM5117 drives external high-side and low-side NMOS power switches with adaptive dead-time control. A user-selectable diode emulation mode enables discontinuous mode operation for improved efficiency at light load conditions. A high voltage bias regulator that allows external bias supply further improves efficiency. The LM5117’s unique analog telemetry feature provides average output current information. Additional features include thermal shutdown, frequency synchronization, hiccup mode current limit, and adjustable line undervoltage lockout.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | LM5117/Q1 Wide Input Range Synchronous Buck Controller with Analog Current Monitor datasheet (Rev. F) | PDF | HTML | 2015. 8. 27 | |
| 백서 | Valuing wide VIN, low EMI synchronous buck circuits for cost-driven, demanding a (Rev. A) | 2019. 4. 10 | |||
| 애플리케이션 노트 | Understanding Inverting Buck-Boost Power Stages in Switch Mode Power Supplies (Rev. B) | 2019. 3. 12 | |||
| 백서 | Overcoming Challenges in Designing Step-Dwn Reg Apps w/40V Input Voltage (Rev. A) | 2018. 7. 3 | |||
| 애플리케이션 노트 | How to Design a Simple Constant Current/Constant Voltage Buck Converter | 2018. 6. 26 | |||
| 기술 문서 | How to design a simple constant-current/constant-power/constant-voltage-regulating | PDF | HTML | 2018. 5. 2 | ||
| 아날로그 디자인 학술지 | Reduce buck-converter EMI and voltage stress by minimizing inductive parasitics | 2016. 7. 21 | |||
| 백서 | Wide VIN power management ICs simplify white paper (Rev. A) | 2013. 9. 19 | |||
| 애플리케이션 노트 | Precision Output Current Limiting Using Average Current Monitor Feature | 2011. 6. 21 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
LM5117EVAL — LM5117 넓은 Vin 동기 벅 컨트롤러 평가 모듈
The LM5117 evaluation board provides the design engineer with a fully functional synchronous buck converter based on Emulated Current Mode Control to evaluate the LM5117 controller IC. The evaluation board provides 12V output with a 9A current capability in addition with average output current (...)
LM5117 TINA-TI Transient Reference Design (Rev. A)
LM5117QUICK-CALC — LM5117 빠른 시작 계산기
PMP10852 — 12V@15A 출력에 고전력 소형 폼 팩터 동기 벅 레퍼런스 디자인
The PMP10852 reference design uses the LM5117, CSD18563 for the high side MOSFET and CSD18532 (x2) for the low side MOSFETs. PMP10852 takes input voltages between 27V to 41V and outputs 180W(12V @15A). The size is very small, total area is 1,200mm2 (30mm x 40mm) solution size. The (...)
PMP10852B — 12V@15A 출력에 고전력 소형 폼 팩터 동기 벅 레퍼런스 디자인
The PMP10852B reference design uses the LM5117, CSD18563 for the high side MOSFET and CSD18532 (x2) for the low side MOSFETs. PMP10852B takes input voltages between 27V to 41V and outputs 180W(12V @15A). The size is very small, total area is 1,200mm2 (30mm x 40mm) solution size. The (...)
PMP20808 — 450W 고효율 25V 벅 컨버터 레퍼런스 설계
PMP20904 — 산업용 애플리케이션을 위한 100W 음극 출력 전원 공급 장치 레퍼런스 설계
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| WQFN (RTW) | 24 | Ultra Librarian |
| HTSSOP (PWP) | 20 | Ultra Librarian |
주문 및 품질
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.