• - 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

TPS40192 and TPS40193 are cost-optimized synchronous buck controllers that operate from 4.5 V to 18 V input. These controllers implement a voltage-mode control architecture with the switching frequency fixed at either 600 kHz (TPS40192) or 300 kHz (TPS40193). The higher switching frequency facilitates the use of smaller inductor and output capacitors, thereby providing a compact power-supply solution. An adaptive anti-cross conduction scheme is used to prevent shoot through current in the power FETs.

Short circuit detection is done by sensing the voltage drop across the low-side MOSFET when it is on and comparing it with a user selected threshold of 100 mV, 200 mV or 280 mV. The threshold is set with a single external resistor connected from COMP to GND.

特性

• Input Operating Voltage Range: 4.5 V to 18 V
• Up to 20-A Output Currents
• Supports Pre-Biased Outputs
• 0.5%, 591-mV Reference
• 600 kHz (TPS40192) and 300 kHz (TPS40193) Switching Frequencies
• Three Selectable Thermally Compensated Short-Circuit Protection Levels
• Hiccup Restart from Faults
• Internal 5-V Regulator
• High-Side and Low-Side FET R_DS(on) Current Sensing
• 10-Pin 3 mm × 3 mm SON Package
• Internal 4-ms Soft-Start Time
• Thermal Shutdown Protection at 145°C
• APPLICATIONS
  • Cable Modem CPE
  • Digital Set Top Box
  • Graphics/Audio Cards
  • Entry Level and Mid-Range Servers