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.
技術文件
設計與開發
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LM5180EVM-DUAL — 寬 VIN PSR 返馳式轉換器雙輸出評估模組
LM5180EVM-S05 — 寬 VIN PSR 返馳式轉換器單輸出評估模組
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 — 具備整合式交換器 PSR 返馳轉換器的隔離式 2.5-W SiC & IGBT閘極驅動電源參考設計
PMP30817 — 具有雙輸出的 10-VDC 至 30-VDC 輸入 PSR 返馳式轉換器參考設計
PMP31261 — 大範圍 VIN PSR 返馳式轉換器雙輸出評估模組
TIDA-010006 — 具備整合式交換器 PSR 返馳控制器的隔離式 IGBT 閘極驅動電源參考設計
此參考設計 透過 24-V DC 輸入電源,為絕緣式閘極雙極電晶體 (IGBT) 閘極驅動器提供隔離式正負電壓軌。該產品使用返馳電源拓撲產生四對 15-V 和 –5-V 輸出,適合供電給六個各為 1W 的 IGBT 閘極驅動器。在 LM5180 返馳式轉換器中整合 100-V 額定一次側開關,並免除輔助變壓器繞組,可實現精巧的解決方案。
TIDA-010048 — 通道轉通道隔離式類比輸入模組參考設計
此參考設計為四通道間隔離的 4–20mA 電流迴路類比輸入模組。此設計具備短路、過電流與過電壓限制功能,適用於狀態監控感測器與模組應用。此類比輸入模組設計的主要功能包括通道隔離、由 LM5180 單一返馳轉換器供電的多通道類比輸入模組、2 線發射器電源供應,以及短路保護電路。此設計也可支援四通道類比輸入模組。
TIDA-010081 — 用於 5G 電信整流器的 >95% 效率、1 kW 類比控制 AC/DC 參考設計
TIDA-010988 — 具有單電源供電的八通道 V 與 I 組合類比輸入模組參考設計
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WSON (NGU) | 8 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。