TPS65279
- 4.5-V to 18-V Wide Input Voltage Range
- Programmable Slew Rate Control for Output
Voltage Transition - Up to 5-A Maximum Continuous Output Current in
Buck 1 and Buck 2 - Buck 1 and Buck 2 can be Paralleled to Deliver up
to 10-A Current - Pulse Skipping Mode to Achieve High Efficiency in
Light Load - Adjustable Switching Frequency
200 kHz to 1.6 MHz Set by External Resistor - Dedicated Enable and Soft-Start for Each Buck
- Peak Current-Mode Control With Simple
Compensation Circuit - Cycle-by-Cycle Overcurrent Protection
- 180° Out-of-Phase Operation to Reduce Input
Capacitance and Power Supply Induced Noise - Over Temperature Protection
- Available in 32-Pin Thermally Enhanced HTSSOP
(DAP) and 36-Pin VQFN 6-mm × 6-mm (RHH)
Packages
TPS65279 is a monolithic dual synchronous buck converter with wide 4.5-V to 18-V operating input voltage range that encompassed most intermediate bus voltage operating off 5-, 9-, 12- or 15-V power bus or battery. The converter with constant frequency peak current mode control is designed to simplify its application while giving the designers options to optimize their usage according to the target applications.
Two bucks in TPS65279 can be paralleled to delivery up to 10-A load current by using current sharing mode, connect ISHARE pin high. Two phase operation in current sharing reduces system filtering capacitance and inductance, alleviates EMI and improves output voltage ripple and noise.
TPS65279 features a dedicated enable pin. An independent soft-start pin provides flexibility in power up programmability. Constant frequency peak current mode control simplifies the compensation and provides fast transient response. Cycle-by-cycle overcurrent protection and hiccup mode operation limit MOSFET power dissipation in short circuit or over loading fault conditions.
Low-side reverse overcurrent protection also prevents excessive sinking current from damaging the converter. TPS65279 also features a light load pulse skipping mode (PSM) controlled by MODE pin configuration.
The TPS65279 is available in a 32-pin thermally-enhanced HTSSOP (DAP) package and 36-pin 6-mm × 6-mm VQFN (RHH) package.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | TPS65279 4.5- to 18-V Input, 5-A/5-A Dual Synchronous Step-Down Converter With Current Sharing datasheet (Rev. C) | PDF | HTML | 2015年 5月 14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 | |
| User guide | 4.5V TO 18V Input, 5A/5A Dual Synchronous Step-Down Converter, TPS65279DAPR | 2013年 8月 21日 | ||
| User guide | 4.5V TO 18V Input, 6A/3.5A Dual Synchronous Step-Down Converter, TPS65279RHHR | 2013年 8月 21日 |
設計與開發
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TPS65279EVM — TPS65279EVM 評估模組
The Texas Instruments TPS65279EVM evaluation module (EVM) is a fully assembled and tested circuit for evaluating the TPS65279 Step-Down Converter. The TPS65279 is a monolithic dual synchronous buck converter with a wide 4.5V to 18V operating input voltage range that encompasses most intermediate (...)
TPS65279V Unencrypted PSpice Average Model Package (Rev. A)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HTSSOP (DAP) | 32 | Ultra Librarian |
| VQFN (RHH) | 36 | 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