LM5160A
- Wide 4.5-V to 65-V Input Voltage Range
- Integrated High-Side and Low-Side Switches
- No External Schottky Diode Required
- 2-A Maximum Load Current
- Adaptive Constant On-Time Control
- No External Loop Compensation
- Fast Transient Response
- Selectable Forced PWM or DCM Operation
- FPWM Supports Multi-Output Fly-Buck™
- Nearly Constant Switching Frequency
- Resistor Adjustable up to 1 MHz
- Programmable Soft-Start Time
- Prebiased Start-Up
- ±1% Feedback Voltage Reference
- LM5160A Allows External VCC Bias
- Inherent Protection Features for Robust Design
- Peak Current Limiting Protection
- Adjustable Input UVLO and Hysteresis
- VCC and Gate Drive UVLO Protection
- Thermal Shutdown Protection With Hysteresis
- Create a Custom Design Using the LM5160A With the WEBENCH® Power Designer
The LM5160/A is a 65-V, 2-A synchronous step-down converter with integrated high-side and low-side MOSFETs. The adaptive constant on-time control scheme requires no loop compensation and supports high step-down ratios with fast transient response. An internal feedback amplifier maintains ±1% output voltage regulation over the entire operating temperature range. The on-time varies inversely with input voltage resulting in nearly constant switching frequency.
Peak and valley current limit circuits protect against overload conditions. The undervoltage lockout (EN/UVLO) circuit provides independently adjustable input undervoltage threshold and hysteresis. The LM5160/A is programmed through the FPWM pin to operate in continuous conduction mode (CCM) from no load to full load or to automatically switch to discontinuous conduction mode (DCM) at light load for higher efficiency. Forced CCM operation supports multiple-output and isolated Fly-Buck applications using a coupled inductor.
The LM5160A shares the same features and pin configuration as the LM5160. An external bias supply can be connected to the VCC pin of the LM5160A in Buck and Fly-Buck applications. This additional capability lowers IC power dissipation and improves efficiency at high input voltages.
기술 자료
설계 및 개발
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FLYBUCK-FLYBACK-DESIGN-CALC — Flybuck / Flyback Calculator
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TIDA-00199 — 3상 인버터용 와이드 입력 절연 IGBT 게이트 드라이브 플라이벅 전원 공급 장치 - 레퍼런스 디자인
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TIDA-00485 — 24VAC 전원을 지원하는 비절연 RS-485-와이파이 브리지 레퍼런스 디자인
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TIDA-010055 — 보호 릴레이 모듈을 위한 진단 기능이 포함된 비절연 전원 아키텍처 레퍼런스 설계
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| WSON (DNT) | 12 | Ultra Librarian |
주문 및 품질
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.