UCC27222
- Maximizes Efficiency by Minimizing Body-Diode Conduction and Reverse Recovery Losses
- Transparent Synchronous Buck Gate Drive Operation From the Single Ended PWM Input Signal
- 12-V or 5-V Input Operation
- 3.3-V Input Operation With Availability of 12-V Bus Bias
- High-Side and Low-Side ±3-A Dual Drivers
- On-Board 6.5-V Gate Drive Regulator
- ±3.3-A TrueDrive™ Gate Drives for High Current Delivery at MOSFET Miller Thresholds
- Automatically Adjusts for Changing Operating Conditions
- Thermally Enhanced 14-Pins PowerPAD™ HTSSOP Package Minimizes Board Area and Junction Temperature Rise
- APPLICATIONS
- Non-Isolated Single or Multi-phased DC-to-DC Converters for Processor Power, General Computer, Telecom and Datacom Applications
Predictive Gate Drive™ and PowerPAD™ are trademarks of Texas Instruments Incorporated.
The UCC27221 and UCC27222 are high-speed synchronous buck drivers for today’s high-efficiency, lower-output voltage designs. Using Predictive Gate Drive™ (PGD) control technology, these drivers reduce diode conduction and reverse recovery losses in the synchronous rectifier MOSFET(s). The UCC27221 has an inverted PWM input while the UCC27222 has a non-inverting PWM input.
Predictive Gate Drive™ technology uses control loops which are stabilized internally and are therefore transparent to the user. These loops use no external components, so no additional design is needed to take advantage of the higher efficiency of these drivers.
This closed loop feedback system detects body-diode conduction, and adjusts deadtime delays to minimize the conduction time interval. This virtually eliminates body-diode conduction while adjusting for temperature, load- dependent delays, and for different MOSFETs. Precise gate timing at the nanosecond level reduces the reverse recovery time of the synchronous rectifier MOSFET body-diode, reducing reverse recovery losses seen in the main (high-side) MOSFET. The lower junction temperature in the low-side MOSFET increases product reliability. Since the power dissipation is minimized, a higher switching frequency can also be used, allowing for smaller component sizes.
The UCC27221 and UCC27222 are offered in the thermally enhanced 14-pin PowerPAD package with 2°C/W 
jc.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | High-Efficiency Predictive Synchronous Buck Driver datasheet (Rev. B) | 2003年 7月 16日 | |
| Application brief | External Gate Resistor Selection Guide (Rev. A) | 2020年 2月 28日 | ||
| Application brief | Understanding Peak IOH and IOL Currents (Rev. A) | 2020年 2月 28日 | ||
| More literature | Fundamentals of MOSFET and IGBT Gate Driver Circuits (Replaces SLUP169) (Rev. A) | 2018年 10月 29日 | ||
| Selection guide | Power Management Guide 2018 (Rev. R) | 2018年 6月 25日 | ||
| Application note | Increasing UCC27221/2 Gate Drive Voltage | 2003年 6月 20日 | ||
| Application note | Low Voltage Feedback in PWM Applications | 2003年 2月 27日 | ||
| Application note | Predictive Gate Drive Boosts Converter Efficiency | 2002年 12月 18日 | ||
| Application note | UCC27221/2 Predictive Gate Drive FAQ | 2002年 12月 18日 | ||
| More literature | Seminar 1400 Topic 7 The Implication of Synchronous Rectifiers to the Design of | 2002年 4月 22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)。
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HTSSOP (PWP) | 14 | 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
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。