TPS65261
- Operating input supply voltage range (4.5 V to 18 V)
- Feedback reference voltage 0.6 V±1%
- Maximum continuous output current 3 A/2 A/2 A
- Adjustable clock frequency from 250 kHz to 2 MHz
- dedicated enable and soft start pins for each buck
- Automatic power-up, power-down sequence
- Pulse Skipping Mode (PSM) at Light Load (TPS65261 only)
- Output voltage power-good indicator
- Input voltage power failure indicator
- Thermal overloading protection
The TPS65261, TPS65261-1 is a monolithic triple synchronous step-down (buck) converter with 3-A/2-A/2-A output currents. A wide 4.5-V to 18-V input supply voltage range encompasses the most intermediate bus voltages operating off 5-V, 9-V, 12-V or 15-V power bus. The converter, with constant frequency peak current mode, is designed to simplify its application while giving designers options to optimize the system according to targeted applications. The switching frequency of the converters can be adjusted from 250 kHz to 2 MHz with an external resistor. The 180° out-of-phase operation between Buck1 and Buck2, 3 (Buck2 and 3 run in phase) minimizes the input filter requirements.
The TPS65261, TPS65261-1 features an automatic power sequence with connecting MODE pin to V7V and configuring EN1/2/3 pins. The device also features an open drain RESET signal to monitor power down.
At light load, the TPS65261 automatically operates in pulse skipping mode (PSM) and the TPS65261-1 operates in force continuous current mode (FCC). PSM mode provides high efficiency by reducing switching losses at light loads and FCC mode reduces noise susceptibility and RF interference.
The device features overvoltage protection, overcurrent and short-circuit protection and over-temperature protection. A power-good pin asserts when any output voltages are out of regulation.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | TPS6526x 4.5-V to 18-V Input Voltage, 3-A/2-A/2-A Output Current Triple Synchronous Step-Down Converter datasheet (Rev. C) | PDF | HTML | 2023年 5月 10日 |
| White paper | Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) | PDF | HTML | 2024年 4月 30日 | |
| EVM User's guide | TPS65261 Buck Converter Evaluation Module User's Guide (Rev. A) | PDF | HTML | 2021年 5月 26日 | |
| Application note | Measure Power Stage Gain and Slope Compensation in PCM (Peak Current Mode) BUCK (Rev. A) | PDF | HTML | 2019年 4月 1日 | |
| Application note | TPS65250/1/2/3 LAYOUT GUIDE | 2013年 1月 15日 |
設計與開發
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TPS65261EVM-650 — TPS65261EVM 評估模組
The TPS65261EVM-650 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the TPS65261. The EVM contains input and output connectors as well as control jumpers to ease evaluation of device features.
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN (RHB) | 32 | Ultra Librarian |
訂購與品質
- 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
- 晶圓廠位置
- 組裝地點