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.

• 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.

• Bus voltage (Max) (V)
• 30
• Power switch
• MOSFET
• Input VCC (Min) (V)
• 5
• Input VCC (Max) (V)
• 20
• Peak output current (A)
• 3
• Rise time (ns)
• 17
• Operating temperature range (C)
• -40 to 105
• Undervoltage lockout (Typ)
• 4
• Rating
• Catalog
• Number of channels (#)
• 2
• Fall time (ns)
• 17
• Prop delay (ns)
• 60
• Iq (uA)
• 4700
• Input threshold
• TTL
• Channel input logic
• TTL
• Negative voltage handling at HS pin (V)
• -0.3
• Features
• Dead Time Control, Soft Switching, Synchronous Rectification
• Driver configuration
• Inverting, Non-Inverting

UCC27222的完整型号有：UCC27222PWP、UCC27222PWPR，以下是这些产品的关键参数及官网采购报价：

UCC27222PWP，工作温度：-40 to 105，封装：HTSSOP (PWP)-14，包装数量MPQ：90个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网UCC27222PWP的批量USD价格：1.943（1000+）

UCC27222PWPR，工作温度：-40 to 105，封装：HTSSOP (PWP)-14，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网UCC27222PWPR的批量USD价格：1.619（1000+）

PSPICE-FOR-TI — 适用于 TI 设计和模拟工具的 PSpice

PSpice for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence 的模拟分析引擎。PSpice for TI 可免费使用，包括业内超大的模型库之一，涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。

借助?PSpice for TI 的设计和仿真环境及其内置的模型库，您可对复杂的混合信号设计进行仿真。创建完整的终端设备设计和原型解决方案，然后再进行布局和制造，可缩短产品上市时间并降低开发成本。

在?PSpice for TI 设计和仿真工具中，您可以搜索 TI (...)