SLUUBC0A December   2015  – August 2021 TPS548A20

 

  1.   Trademarks
  2. 1 Introduction
  3. 2 Description
    1. 2.1 Typical Applications
    2. 2.2 Features
  4. 3 Electrical Performance Specifications
  5. 4 Schematic
    1. 4.1 8
  6. 5 Test Setup
    1. 5.1 Test Equipment
    2. 5.2 Recommended Test Setup
  7. 6 Configurations
    1. 6.1 Switching Frequency Selection
    2. 6.2 Mode Selection
    3. 6.3 VDD Pin Supply Selection
  8. 7 Test Procedure
    1. 7.1 Line and Load Regulation and Efficiency Measurement Procedure
    2. 7.2 Control-Loop Gain and Phase-Measurement Procedure
    3. 7.3 List of Test Points
    4. 7.4 Equipment Shutdown
  9. 8 EVM Assembly Drawing and PCB Layout
  10. 9 Bill of Materials
  11. 10Revision History

6.1 Switching Frequency Selection

Switching frequency can be changed as shown in Table 6-1.

Table 6-1 Switching Frequency Selection
SWITCHING FREQUENCY(1)
(ƒSW) (kHz)		RESISTOR DIVIDER RATIO
(RDR)		EXAMPLE RF FREQUENCY COMBINATIONS
RRF_H (kΩ)RRF_L (kΩ)
1000> 0.5571300
8500.461180154
7500.375200120
6000.297249105
5000.22924071.5
4000.1624947.5
3000.09625527
200< 0.04127011.5
(1) Default Setting: 1 MHz.

For different switching frequency setting, please change R3 and R4 as shown in Table 6-1.