TPS54A20
- Two-phase, Synchronous Series Capacitor Buck
Converter - Automatic Current Balancing Between Phases
- 2-MHz to 5-MHz Per Phase Switching Frequency
- 14-ns Minimum On-Time
- 0.51-V to 2-V Output Voltage Range with ±0.5%
Feedback Reference Voltage - Input Overvoltage Lockout for 17-V Surge
Protection - Adjustable Current Limit with Auto Restart
(Hiccup) - Synchronizes to an External Clock
- Fixed Frequency in Steady State
- Adaptive On-Time Control
- Internal Feedback Loop Compensation
- Internal Gate Drive LDO with External Supply
Option - EN Pin Allowing for Adjustable Input UVLO
- Selectable Soft-Start Time
- Monotonic Startup with Pre-biased Output
- Output Power Good Indicator (Open Drain)
- Output Overvoltage/Undervoltage Protection
The TPS54A20 is a two-phase, synchronous series capacitor buck converter designed for small size, low voltage applications from a 12-V input rail. This topology uniquely merges a switched capacitor circuit with a two phase buck converter. Advantages include automatic current balancing between the inductors, lower switching losses which enable high frequency (HF) operation, and voltage step-down through the series capacitor. Small, low profile inductors used with the TPS54A20 significantly reduce total solution area and height. An adaptive on-time control architecture provides fast transient response and accurate voltage regulation at up to 10-MHz operating frequency. Fixed frequency operation during steady state is maintained through the use of a phase lock loop (PLL) to lock switching signals to a reference oscillator.
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 | TPS54A20 8-V to 14-V Input, 10-A, up to 10-MHz SWIFT Step Down Converter datasheet (Rev. A) | PDF | HTML | 2016/4/7 | ||
| 類比設計期刊 | Control-Mode Quick Reference Guide (Rev. B) | PDF | HTML | 2023/8/29 | |||
| 選擇指南 | Buck Converter Quick Reference Guide (Rev. B) | 2021/4/8 | ||||
| 類比設計期刊 | Using a high‐freq. switching regulator w/o a linear reg. to power a data‐convert | 2018/9/24 | ||||
| 更多文件說明 | Common Mistakes in DC/DC Converters and How to Fix Them | 2018/2/14 | ||||
| 更多文件說明 | Design of Multi-MHz Series Capacitor Buck Converters Used As Voltage Regulators | 2018/1/31 | ||||
| 類比設計期刊 | Saving board space with a low-profile series-capacitor buck converter | 2016/10/24 | ||||
| 更多文件說明 | Design of a high-frequency series capacitor buck converter | 2016/8/17 | ||||
| 應用說明 | Introduction to the Series Capacitor Buck Converter (Rev. A) | 2016/5/24 | ||||
| 技術文章 | No small matter: How to reduce voltage regulator size | PDF | HTML | 2016/5/23 | |||
| 白皮書 | Breakthrough power delivery for space-constrained applications | 2016/5/13 |
設計與開發
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TPS54A20EVM-770 — TPS54A20 同步降壓轉換器評估模組
TPS54A20EVM-770 是一款 10A 同步雙相轉換器評估模組 (EVM)。 EVM 會從額定 12V 輸入產生 1.2V 輸出電壓。 輸入電壓範圍為 9.2V 至 14V，最小啟動電壓為 9.4V。電路設定為每相位預設運作頻率 2MHz。 EVM 包含板載暫態負載電路，可進行快速暫態測試。
PMP11438 — 將 12V 轉換為 1.2V (負載電流大於 6A) 的三種不同降壓轉換器電路參考設計
PMP11438 是用於比較三種不同電源解決方案的車輛，可在 6-10A 下將 12V 匯流排轉換為 1.2V。1.2V 輸出電壓適用於 DDR4 記憶體應用。每個解決方案在全負載效率、輕負載效率、密度、高度、暫態響應或某些前述組合方面都具備優勢。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN-HR (RNJ) | 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。