• - 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 TPS40090 is a two-, three-, or four-phase programmable synchronous buck controller that is optimized for low-voltage, high-current applications powered by a 5-V to 15-V distributed supply. A multi-phase converter offers several advantages over a single power stage including lower current ripple on the input and output capacitors, faster transient response to load steps, improved power handling capabilities, and higher system efficiency.

Each phase can be operated at a switching frequency up to 1-MHz, resulting in an effective ripple frequency of up to 4-MHz at the input and the output in a four-phase application. A two-phase design operates 180° out of phase, a three-phase design operates 120° out of phase, and a four-phase design operates 90° out of phase, as shown in Figure 1.

特性

• Qualified for Automotive Applications
• Two-, Three-, or Four-Phase Operation
• 5-V to 15-V Operating Range
• Programmable Switching Frequency Up to 1-MHz/Phase
• Current Mode Control With Forced Current Sharing⁽¹⁾
• 1% Internal 0.7-V Reference
• Resistive Divider Set Output Voltage
• True Remote Sensing Differential Amplifier
• Resistive or DCR Current Sensing
• Current Sense Fault Protection
• Programmable Load Line
• Compatible with UCC37222 Predictive Gate
  Drive™ Technology Drivers
• 24-Pin Space-Saving TSSOP Package
• Binary Outputs
• APPLICATIONS
  • Internet Servers
  • Network Equipment
  • Telecommunications Equipment
  • DC Power Distributed Systems