SLUUAQ0C October   2013  – November 2021 TPS53513

 

  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
  6. 5 Test Setup
    1. 5.1 Test Equipment
    2. 5.2 Recommended Test Setup
      1. 5.2.1 Input Connections
      2. 5.2.2 Output Connections
  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/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 List of Materials
  11. 10Revision History

6.1 Switching Frequency Selection

Switching frequency can be changed according to Table 6-1.

Default setting: 1 MHz

Table 6-1 Switching Frequency
SWITCHING FREQUENCY
(FSW)(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
250< 0.04127011.5

For different switching frequency settings, change R3 and R4 according to Table 6-1.