TPS51220A
- 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
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.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | Fixed-Frequency 99% Duty Cycle Peak Current-Mode Notebook System Pwr Controller 数据表 (Rev. E) | 2013-1-21 | |||
| 应用手册 | PC 应用中 Tiger Lake 的非隔离式负载点解决方案 (Rev. B) | PDF | HTML | 英语版 (Rev.B) | PDF | HTML | 2021-8-12 | |
| 应用手册 | Non-Isolated Point-of-Load Solutions for Elkhart Lake in Industrial PC App. (Rev. A) | PDF | HTML | 2020-5-21 | |||
| 选择指南 | 电源管理指南 2018 | 2018-7-31 | ||||
| 应用手册 | Independent Rail Dual Buck Converter using TPS51220 | 2013-11-22 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
TPS51220AEVM-476 — 使用 TPS51220A 的高性能双路输出同步降压评估模块
TPS51220(A) Unencrypted PSpice Average Model Package (Rev. A)
TIPA-050005 — 适用于 PC 应用中 Tiger Lake 的非隔离式负载点解决方案
先进的处理器和平台（例如 Intel® Tiger Lake 微架构）需要使用负载点 (POL) 解决方案，为一组可充电电池或 12V 输入总线提供所需的内存、低功耗 CPU 电源轨以及 3.3V 和 5V 电源轨。
本文档旨在重点介绍新款直流/直流转换器，并说明其满足 PC 应用中 Tiger Lake 一般电源要求的特性。
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| WQFN (RTV) | 32 | Ultra Librarian |
| WQFN (RSN) | 32 | Ultra Librarian |
订购和质量
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