계산 툴
LM5122-BOOST-CALC — LM5122 quick start calculator
LM5122 quick start calculator for boost topology
데이터 시트
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다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능
LM5122-Q1
- AEC-Q100 Qualified with the following results:
- Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
- Device HBM ESD Classification Level 2
- Device CDM ESD Classification Level C6
- Maximum Input Voltage: 65 V
- Minimum Input Voltage: 3 V (4.5 V for Start-Up)
- Output Voltage up to 100 V
- Bypass (VOUT = VIN) Operation
- 1.2-V Reference with ±1% Accuracy
- Free-Run and Synchronizable Switching to 1 MHz
- Peak-Current-Mode Control
- Robust 3-A Integrated Gate Drivers
- Adaptive Dead-Time Control
- Optional Diode-Emulation Mode
- Programmable Cycle-by-Cycle Current Limit
- Hiccup-Mode Overload Protection
- Programmable Line UVLO
- Programmable Soft Start
- Thermal Shutdown Protection
- Low Shutdown Quiescent Current: 9 µA
- Programmable Slope Compensation
- Programmable Skip-Cycle Mode Reduces Standby Power
- Allows External VCC Supply
- Inductor DCR Current Sensing Capability
- Multi-phase Capability
- Thermally Enhanced 20-Pin HTSSOP
- Create a Custom Design Using the LM5122 With the WEBENCH® Power Designer
The LM5122 is a multi-phase capable synchronous boost controller intended for high-efficiency synchronous boost regulator applications. The control method is based upon peak-current-mode control. Current-mode control provides inherent line feed forward, cycle-by-cycle current limiting, and ease of loop compensation.
The switching frequency is programmable up to 1 MHz. Higher efficiency is achieved by two robust N-channel MOSFET gate drivers with adaptive dead-time control. A user-selectable diode-emulation mode also enables discontinuous-mode operation for improved efficiency at light load conditions.
An internal charge pump allows 100% duty cycle for high-side synchronous switch (bypass operation). A 180° phase shifted clock output enables easy multi-phase interleaved configuration. Additional features include thermal shutdown, frequency synchronization, hiccup-mode current limit, and adjustable line undervoltage lockout.
기술 자료
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7개 모두 보기 | 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | LM5122-Q1 Wide-Input Synchronous Boost Controller With Multiple Phase Capability datasheet | PDF | HTML | 2017/06/09 |
| White paper | An overview of radiated EMI specifications for power supplies | 2018/06/05 | ||
| White paper | An overview of conducted EMI specifications for power supplies | 2018/02/01 | ||
| Application brief | Improve DC/DC Regulator EMI for Free with Optimized Power Stage Layout | 2017/11/13 | ||
| Analog Design Journal | Designing the front-end DC/DC conversion stage to withstand automotive transient | 2017/01/18 | ||
| EVM User's guide | LM5122EVM-1PH User's Guide | 2013/04/22 | ||
| EVM User's guide | LM5122EVM-2PH User's Guide | 2013/04/22 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
평가 보드
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사용 설명서: PDF
평가 보드
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사용 설명서: PDF
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평가 보드
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시뮬레이션 모델
LM5122 Dual-Phase TINA-TI Transient Reference Design
SNVMAV2.TSC (729 KB) - TINA-TI Reference Design
시뮬레이션 모델
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SNVM495B.TSC (188 KB) - TINA-TI Reference Design
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레퍼런스 디자인
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레퍼런스 디자인
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레퍼런스 디자인
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| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| HTSSOP (PWP) | 20 | 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