現在提供此產品的更新版本
功能相同,但針腳輸出與所比較的裝置不同。
LM25122-Q1
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AEC-Q100 Qualified with the following results:
- Device Temperature Grade 1: -40°C to +125°C Ambient Operating Temperature Range
- Device HBM ESD Classification Level 2
- Device CDM ESD Classification Level C6
- Maximum Input Voltage : 42 V
- Min Input Voltage : 3 V (4.5 V for startup)
- Output Voltage up to 50 V
- Bypass (VOUT = VIN) Operation
- 1.2 V Reference with ±1.0% Accuracy
- Free-Run and Synchronizable Switching to 600 kHz
- 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
- Multiphase Capability
- Thermally Enhanced 20-Pin HTSSOP
The LM25122 is a multiphase 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 600 kHz. 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 180º 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.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | LM25122-Q1 Wide-Input Synchronous Boost Controller With Multiple Phase Capability datasheet (Rev. B) | PDF | HTML | 2016/5/27 | ||
| 白皮書 | An overview of radiated EMI specifications for power supplies | 2018/6/5 | ||||
| 白皮書 | An overview of conducted EMI specifications for power supplies | 2018/2/1 | ||||
| Application brief | Improve DC/DC Regulator EMI for Free with Optimized Power Stage Layout | 2017/11/13 | ||||
| 技術文章 | Get loud with a 700W automotive audio amplifier for infotainment systems | PDF | HTML | 2017/6/15 | |||
| 更多文件說明 | TI Automotive External Amplifiers (Rev. A) | 2017/2/3 |
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)。
SNVC196 — LM25122-Q1 Design Calculator
PMP11769 — 700-W 車用外部音訊放大器參考設計
PMP21112 — 具有封包追蹤的 98% 效率 400W 可調整輸出雙相位升壓參考設計
PMP31114 — 適用於 3-V 冷啟動的同步 SEPIC 參考設計
TIDA-00699 — 具有冷起動運作、瞬態保護及 EMI 濾波器的前端電源設計參考
此解決方案是旨在作為一款廣泛適用的汽車無電池前端電源供應器,適用於 10-15W 的系統。此外,還重點關注 EMI/EMC 的測試與合規性,以協助設計師滿足與生產汽車電子子系統相關的監管要求。
TIDA-01534 — 車用無電池雙相升壓轉換器參考設計
TIDA-01553 — 支援 2.5-V 冷車啟動設定檔的車用無電池 VCM 參考設計
TIDA-01610 — 適用於音訊放大器的車用封包追蹤電源供應參考設計
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HTSSOP (PWP) | 20 | 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。