ZHCSJ97B September 2009 – January 2019 TPS60151
PRODUCTION DATA.
- 1 特性
- 2 应用
- 3 说明
- 4 修订历史记录
- 5 Device Comparison Table
- 6 Pin Configuration and Functions
- 7 Specifications
- 8 Detailed Description
- 9 Application and Implementation
- 10Power Supply Recommendations
- 11Layout
- 12器件和文档支持
- 13机械、封装和可订购信息
8.1 Overview
The TPS60151, regulated charge pump, provides a regulated output voltage for various input voltages. The TPS60151 regulates the voltage across the flying capacitor to 2.5 V and controls the voltage drop of Q1 and Q2 while a conversion clock with 50% duty cycle drives the FETs.
Figure 3. Charging Mode During the first half cycle, Q2 and Q3 transistors are turned on and flying capacitor, CF, will be charged to 2.5 V ideally.
Figure 4. Discharging Mode During the second half cycle, Q1 and Q4 transistors are turned on. Capacitor CF will then be discharged to output.
The output voltage can be calculated as follows:
The output voltage is regulated by output feedback and an internally compensated voltage control loop.