• - 交流-直流(AC-DC)控制器和稳压器
• - 直流-直流(DC-DC)控制器、转换器和稳压器
• - 电压和电流管理
• - 通讯IC
• - 驱动器
• - 热管理

• - 时钟及数据分配
• - 标准逻辑

• - 放大器和比较器
• - 模拟开关
• - 数字电位计
• - 接口
• - EMI和RFI滤波器

• - EEPROM存储器
• - 非易失性只读存储器(NVRAM)
• - SRAM存储器

说明

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.

特性

• 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