ZHCSDP8D May 2015 – August 2021 TPS61088
PRODUCTION DATA
- 1 特性
- 2 應用
- 3 說明
- 4 Revision History
- 5 Pin Configuration and Functions
- 6 Specifications
- 7 Detailed Description
- 8 Application and Implementation
- 9 Power Supply Recommendations
- 10Layout
- 11Device and Documentation Support
- 12Mechanical, Packaging, and Orderable Information
7.3.3 Adjustable Switching Frequency
This device features a wide adjustable switching frequency ranging from 200 kHz to 2.2 MHz. The switching frequency is set by a resistor connected between the FSW pin and the SW pin of the TPS61088. A resistor must always be connected from the FSW pin to SW pin for proper operation. The resistor value required for a desired frequency can be calculated using Equation 2.
Equation 2. 
where
- RFREQ is the resistance connected between the FSW pin and the SW pin
- CFREQ is 23 pF
- ?SW is the desired switching frequency
- tDELAY is 89 ns
- VIN is the input voltage
- VOUT is the output voltage