TPS65055
- Up to 95% Efficiency
- Output Current for DCDC Converters 2 × 0.6 A
- Two Selectable Fixed Output Voltages 1 V and
1.2 V for DCDC2 - VIN Range for DCDC Converters From 2.5 V to 6 V
- 2.25-MHz Fixed-Frequency Operation
- Power Save Mode at Light Load Current
- 180° Out-of-Phase Operation
- Output Voltage Accuracy in PWM Mode ±1%
- Low Ripple PFM Mode
- Total Typical 32-µA Quiescent Current for Both
DC-DC Converters - 100% Duty Cycle for Lowest Dropout
- 2 General-Purpose 400 mA High PSRR LDOs
- 2 General-Purpose 200 mA High PSRR LDOs
- VIN Range for LDOs From 1.5 V to 6.5 V
- Digital Voltage Selection for the LDOs
- I2C Compatible Interface
- Available in a 4 mm × 4 mm 32-Pin QFN Package
The TPS65055 device is an integrated Power Management IC for applications powered by one Li-Ion or Li-Polymer cell, which require multiple power rails.
The TPS65055 provides two highly efficient, 2.25 MHz step-down converters targeted at providing the core voltage and I/O voltage in a processor-based system. Both step-down converters enter a low power mode at light load for maximum efficiency across the widest possible range of load currents.
For low noise applications the device can be forced into fixed frequency PWM mode using the I2C compatible interface. In shutdown mode, current consumption is reduced to less than 1 µA.
The device allows the use of small inductors and capacitors to achieve a small solution size.
The TPS65055 provides an output current of up to 0.6 A on each DC-DC converter.
The TPS65055 also integrates two 400-mA LDO and two 200-mA LDO voltage regulators, which can be turned on/off using separate enable pins on each LDO. Each LDO operates with an input voltage range from 1.5 V to 6.5 V allowing them to be supplied from one of the step-down converters or directly from the main battery. Two digital input pins are used to set the output voltage of the LDOs from a set of 9 different combinations for LDO1 to LDO4. Additionally, the converters can be controlled by an I2C compatible interface.
The TPS65055 is available in a small 32-pin leadless package (4 mm × 4 mm QFN) with a 0.4-mm pitch.
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 | TPS65055 2.25-MHz Dual Step-Down Converter With 4 Low-Input Voltage LDOs 数据表 (Rev. A) | PDF | HTML | 2015-6-30 | ||
| 应用手册 | 设计电压监控器的电阻分压器输入端时的 IQ与精度权衡因素 (Rev. B) | PDF | HTML | 英语版 (Rev.B) | PDF | HTML | 2021-10-25 | |
| 应用手册 | Basic Calculation of a Buck Converter's Power Stage (Rev. B) | PDF | HTML | 2015-8-17 | |||
| 应用手册 | TPS6505x Design Guide | 2015-4-10 |
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）。
IPG-UI — IPG-UI EVM GUI (Windows Installer)
此 IPG-UI GUI 可用于配置多个 PMIC 器件，评估这些器件的功能和性能。 此 GUI 是使用基于网络的技术构建的，支持通过 USB2ANY 适配器板与 EVM 硬件交互。提供 USB2ANY Explorer，用于将 USB2ANY 适配器板上的固件更新为所需版本（2.7.0.0 或更高）。
TPS65055EVM-SW — TPS65055 EVM 软件（传统版）
TPS65055 EVM 软件为 TPS65055 EVM 板提供软件接口。使用本软件通过 USB 接口适配器来更改 TPS65055 IC 寄存器。
下载：安装用于 TPS65055EVM-SW 的软件
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| VQFN (RSM) | 32 | Ultra Librarian |