LM5180
- Designed for reliable and rugged
applications
- Wide input voltage range of 4.5 V to 65 V with operation down to 3.5 V after start-up
- Robust solution with only one component crossing the isolation barrier
- ±1.5% total output regulation accuracy
- Optional VOUT temperature compensation
- 6-ms internal or programmable soft start
- Input UVLO and thermal shutdown protection
- Hiccup-mode overcurrent fault protection
- –40°C to +150°C junction temperature range
- Integration
reduces solution size and cost
- Integrated 100-V, 0.4-Ω power MOSFET
- No opto-coupler or transformer auxiliary winding required for VOUT regulation
- Internal loop compensation
- High-efficiency PSR flyback
operation
- Quasi-resonant MOSFET turn-off in BCM
- Low input quiescent current
- External bias option for improved efficiency
- Single- and multi-output implementations
- Ultra-low
conducted and radiated EMI signatures
- Soft switching avoids diode reverse recovery
- Optimized for CISPR 32 EMI requirements
- Create a custom regulator design using WEBENCH® Power Designer
The LM5180 is a primary-side regulated (PSR) flyback converter with high efficiency over a wide input voltage range of 4.5 V to 65 V. The isolated output voltage is sampled from the primary-side flyback voltage, eliminating the need for an optocoupler, voltage reference, or third winding from the transformer for output voltage regulation.
The high level of integration results in a simple, reliable and high-density design with only one component crossing the isolation barrier. Boundary conduction mode (BCM) switching enables a compact magnetic solution and better than ±1.5% load and line regulation performance. An integrated 100-V power MOSFET provides output power up to 7 W with enhanced headroom for line transients.
The LM5180 flyback converter is available in a 8-pin, 4-mm × 4-mm, thermally-enhanced WSON package with 0.8-mm pin pitch.
The LM5180 flyback converter simplifies implementation of isolated DC/DC supplies with optional features to optimize performance for the target end equipment. The output voltage is set by one resistor, while an optional resistor improves output voltage accuracy by negating the thermal coefficient of the flyback diode voltage drop. Additional features include an internally-fixed or externally-programmable soft start, optional bias supply connection for higher efficiency, precision enable input with hysteresis for adjustable line UVLO, hiccup-mode overload protection, and thermal shutdown protection with automatic recovery.
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设计与开发
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LM5180EVM-DUAL — 具有双路输出的宽 VIN PSR 反激式转换器评估模块
LM5180EVM-S05 — 具有单路输出的宽 VIN PSR 反激式转换器评估模块
LM5180-Q1 TINA-TI Dual Startup 15Vout1 and -8Vout2 Transient Model
LM5180-Q1 TINA-TI Dual Startup 24Vout1 and 5Vout2 Transient Model
LM5180DESIGN-CALC — LM5180 Quickstart Design Tool
PMP30629 — 具有集成开关 PSR 反激式转换器的隔离式 2.5W SiC 和 IGBT 栅极驱动器参考设计
PMP30817 — 具有双路输出参考设计的 10VDC 至 30VDC 输入 PSR 反激式转换器
PMP31261 — 具有双路输出的宽 VIN PSR 反激式转换器参考设计
TIDA-010006 — 具有集成开关 PSR 反激式控制器的隔离式 IGBT 栅极驱动电源参考设计
此参考设计通过 24V 直流输入电源为绝缘栅双极晶体管 (IGBT) 栅极驱动器提供隔离式正负电压轨。该设计采用反激式电源拓扑生成四对 15V 和 –5V 输出,适合为各 1W 的六个 IGBT 栅极驱动器供电。通过集成 LM5180 反激式转换器内 100V 额定初级侧开关,并且无需辅助变压器绕组,实现了紧凑型解决方案。
TIDA-010048 — 通道至通道隔离式模拟输入模块参考设计
此参考设计是一款四通道至通道、隔离式 4–20mA 电流环路模拟输入模块。该设计包括用于状态监控传感器和模块应用的短路、过流和过压限制功能。模拟输入模块设计的主要功能包括通道隔离、由使用 LM5180 单反激转换器供电的多通道模拟输入模块、为 2 线制发送器和短路保护电路供电的电源。此设计还可支持四通道模拟输入模块。
TIDA-010081 — 适用于 5G 通信电源整流器且效率超过 95% 的 1kW 模拟控制交流/直流参考设计
TIDA-010988 — 具有单电源的八通道 V 和 I 组合模拟输入模块参考设计
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| WSON (NGU) | 8 | Ultra Librarian |
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