計算工具
LM5176-Q1
- AEC-Q100 qualified for automotive applications
- Temperature grade 1: -40°C to 125°C TA
- Functional Safety-Capable
- Single inductor buck-boost controller for step-up/step-down DC/DC conversion
- Wide VIN: 4.2 V (2.5 V with bias) to 55 V (60 V maximum)
- Flexible VOUT: 0.8 V to 55 V
- VOUT short protection
- High efficiency buck-boost transition
- Adjustable switching frequency
- Optional frequency sync and dithering
- Integrated 2-A MOSFET gate drivers
- Cycle-by-cycle current limit and optional hiccup
- Optional input or output average current limiting
- Programmable input UVLO and soft-start
- Power good and output overvoltage protection
- Available in HTSSOP-28 package
- Create a custom design using the LM5176-Q1 with the WEBENCH Power Designer
The LM5176-Q1 is a synchronous four-switch buck-boost DC/DC controller capable of regulating the output voltage at, above, or below the input voltage. The LM5176-Q1 operates over a wide input voltage range of 4.2 V to 55 V (60 V absolute maximum) to support a variety of applications.
The LM5176-Q1 employs current-mode control both in buck and boost modes of operation for superior load and line regulation. The switching frequency is programmed by an external resistor and can be synchronized to an external clock signal.
The device also features a programmable soft-start function and offers protection features including cycle-by-cycle current limiting, input undervoltage lockout (UVLO), output overvoltage protection (OVP), and thermal shutdown. In addition, the LM5176-Q1 features optional average input or output current limiting, optional spread spectrum to reduce peak EMI, and optional hiccup mode protection in sustained overload conditions.
技術文件
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檢視所有 6 | 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | LM5176-Q1 55-V Wide VIN Synchronous 4-Switch Buck-Boost Controller datasheet (Rev. B) | PDF | HTML | 2021年 8月 13日 |
| Application note | Bidirectional TEC Driver Design for 40-W TEC | PDF | HTML | 2023年 6月 2日 | |
| Functional safety information | LM5176 and LM5176-Q1 Functional Safety, FIT Rate, Failure FMD | 2020年 5月 22日 | ||
| Application note | LM5176 Power Sharing Between Two Parallel, Four-Switch Buck-Boost Converters | 2018年 7月 16日 | ||
| White paper | An overview of radiated EMI specifications for power supplies | 2018年 6月 5日 | ||
| White paper | An overview of conducted EMI specifications for power supplies | 2018年 2月 1日 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
開發板
LM5176EVM-HP — LM5176 寬輸入電壓降壓/升壓控制器評估模組
LM5176EVM-HP 展示使用 LM5176 wide-vin 降壓升壓控制器的靈活高功率降壓升壓設計。評估模組設定為在 6V 至 36V 輸入電壓範圍內運作，並提供最高 12A 負載電流的穩壓 12-V 輸出。
使用指南: PDF
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HTSSOP (PWP) | 28 | Ultra Librarian |
訂購與品質
內含資訊：
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
內含資訊：
- 晶圓廠位置
- 組裝地點