- 制造厂商:TI
- 产品类别:电源管理
- 技术类目:直流/直流开关稳压器 - 降压稳压器
- 功能描述:采用 RSN/RTV 封装的适用于笔记本电脑电源的 3V 至 28V 同步峰值电流模式降压控制器
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The TPS51220A is a dual synchronous buck regulator controller with two LDOs. It is optimized for 5-V/3.3-V system controller, enabling designers to cost effectively complete 2-cell to 4-cell notebook system power supply. The TPS51220A supports high efficiency, fast transient response, and 99% duty cycle operation. It supports supply input voltage ranging from 4.5 V to 32 V, and output voltages from 1 V to 12 V. 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. The D-CAP mode supports fast transient response. The high duty (99%) operation and the wide input/output voltage range supports flexible design for small mobile PCs and a wide variety of other applications. The fixed frequency can be adjusted from 200 kHz to 1 MHz by a resistor, and each channel runs 180° out-of-phase. The TPS51220A can also synchronize to the external clock, and the interleaving ratio can be adjusted by its duty. The TPS51220A is available in the 32-pin 5×5/4×4 QFN package and is specified from –40°C to 85°C.
- Input Voltage Range: 4.5 V to 32 V
- Output Voltage Range: 1 V to 12 V
- Selectable Light Load Operation (Continuous / Auto Skip / Out-Of-Audio Skip)
- Programmable Droop Compensation
- Voltage Servo Adjustable Soft Start
- 200-kHz to 1-MHz Fixed-Frequency PWM
- Selectable Current/D-CAP Mode Architecture
- 180° Phase Shift Between Channels
- Resistor or Inductor DCR Current Sensing
- Adaptive Zero Crossing Circuit
- 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
- QFN-32 (RTV/RSN) Package
- APPLICATIONS
- Notebook Computer System and I/O Bus
- Point of Load in LCD TV, MFP
- Vin (Min) (V)
- 4.5
- Vin (Max) (V)
- 32
- Vout (Min) (V)
- 1
- Vout (Max) (V)
- 12
- Iout (Max) (A)
- 20
- Iq (Typ) (uA)
- 1300
- Switching frequency (Min) (kHz)
- 200
- Switching frequency (Max) (kHz)
- 1000
- Features
- Enable, Frequency Synchronization, Light Load Efficiency, Phase Interleaving, Power Good, Synchronous Rectification
- Regulated outputs (#)
- 2
- Number of phases
- 1
- Rating
- Catalog
TPS51220A的完整型号有:TPS51220ARSNR、TPS51220ARSNT、TPS51220ARTVR、TPS51220ARTVT,以下是这些产品的关键参数及官网采购报价:
TPS51220ARSNR,工作温度:-40 to 85,封装:QFN (RSN)-32,包装数量MPQ:3000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TPS51220ARSNR的批量USD价格:1.32(1000+)
TPS51220ARSNT,工作温度:-40 to 85,封装:QFN (RSN)-32,包装数量MPQ:250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TPS51220ARSNT的批量USD价格:1.584(1000+)
TPS51220ARTVR,工作温度:-40 to 85,封装:WQFN (RTV)-32,包装数量MPQ:3000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TPS51220ARTVR的批量USD价格:1.32(1000+)
TPS51220ARTVT,工作温度:-40 to 85,封装:WQFN (RTV)-32,包装数量MPQ:250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TPS51220ARTVT的批量USD价格:1.584(1000+)
TPS51220AEVM-476 — 使用 TPS51220A 的高性能双路输出同步降压评估模块
此 EVM 使用 TI 的 TPS51220A 并采用双路输出设计。它包括许多测试点,有助于工程师监控及评估 TPS51220A 的控制特性。TPS51220A 是一款具有三个线性稳压器的双峰值电流模式、同步降压控制器。该 EVM 还可让工程师配置 TPS51220A 控制器的多个功能。TPS51220A EVM-476 具有两个 8A 输出、3.3V 和 5V。它接受 8V 至 20V 的输入电压。多个跳线和开关可让用户评估 TPS51220A 的各种控制功能。通过开关,可轻松地独立启用和禁用 EVM (...)TPS51220A Unencrypted PSpice Transient Model Package (Rev. B)
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。
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