Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller 32-VQFN -40℃ to 85℃
DESCRIPON
The TPS51220 is a dual synchronous buck regulator controller with 2 LDOs. It is optimized for 5V/3.3V system controller, enabling designers to cost effectively complete 2-cells to 4-cells notebook system power supply. The TPS51220 supports high efficiency, fast transient response and 99% duty cycle operation. It supports supply input voltages ranging from 4.5V to 28V, and output voltages from 1V to 12V. Two types of control schemes can be chosen depending on the application. Peak current mode supports stability operation with lower ESR capacitor and output accuracy.
FEATURES
• Input Voltage Range: 4.5V to 28V
• Output Voltage Range: 1V to 12V
• Selectable Light Load Operation Continuous / Auto Skip / Out-Of-Audio™ Skip
• Programmable Droop Compensation
• Voltage Servo Adjustable Soft Start
• 200kHz to 1MHz Fixed Frequency PWM
• Selectable Current/D-CAP™ Mode Architecture
• 180° Phase Shift Between Channels
• Resistor or Inductor DCR Current Sensing
• Powergood Output for Each Channel
• OCL/OVP/UVP/UVLO Protections OVP Disable Option
• Thermal Shutdown Non-Latch
• Output Discharge Function Disable Option
• Integrated Boot Strap MOSFET Switch
• QFN32 RHB
APPLICATIONS
• Notebook Computer System and I/O Bus
• Point of Load in LCD TV, MFP
输出接口数 2
输出电压 1V ~ 12V
输出电流 20 A
耗散功率 900 mW
静态电流 1.30 mA
调节输出数 2
开关频率 1000 kHz
过温保护 Yes
拓扑结构 Buck
输入电压Max 28 V
输入电压Min 4.5 V
输出电流Max 20 A
工作温度Max 85 ℃
工作温度Min -40 ℃
耗散功率Max 900 mW
输入电压 4.5V ~ 28V
安装方式 Surface Mount
引脚数 32
封装 VQFN-32
封装 VQFN-32
工作温度 -40℃ ~ 85℃
产品生命周期 Active
包装方式 Tape & Reel TR
RoHS标准 RoHS Compliant
含铅标准 Lead Free
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
TPS51220RHBTG4 TI 德州仪器 | 当前型号 | 当前型号 |
TPS51220RHBRG4 德州仪器 | 完全替代 | TPS51220RHBTG4和TPS51220RHBRG4的区别 |
TPS51220RHBR 德州仪器 | 类似代替 | TPS51220RHBTG4和TPS51220RHBR的区别 |