SLVU735A June   2012  – February 2022

 

  1.   Trademarks
  2. 1 Description
    1. 1.1 Typical Applications
    2. 1.2 Features
  3. 2 Electrical Performance Specifications
  4. 3 Schematic
  5. 4 Test Setup
    1. 4.1 Test Equipment
    2. 4.2 Recommended Test Setup
  6. 5 Configurations
  7. 6 Test Procedure
    1. 6.1 Line/Load Regulation and Efficiency Measurement Procedure
    2. 6.2 List of Test Points
    3. 6.3 Equipment Shutdown
  8. 7 Performance Data and Typical Characteristic Curves
    1. 7.1  5-V Efficiency
    2. 7.2  5-V Load Regulation
    3. 7.3  3.3-V Efficiency
    4. 7.4  3.3-V Load Regulation
    5. 7.5  Enable Turn-On/Turn-Off
    6. 7.6  Output Ripple
    7. 7.7  Switching Node
    8. 7.8  5-V Output Transient with Auto-skip Mode
    9. 7.9  3.3-V Output Transient with Auto-skip Mode
    10. 7.10 Output Prebias Turn-On
    11. 7.11 Thermal Image
  9. 8 EVM Assembly Drawing and PCB Layout
  10. 9 Bill of Materials
  11. 10Revision History

2 Electrical Performance Specifications

Table 2-1 TPS51225EVM-133 Electrical Performance Specifications
PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
INPUT CHARACTERISTICS
Voltage range VIN 8 12 20 V
Maximum input current VIN = 8 V, 5 VOUT, 1/10 A, 3.3 VOUT, 2/10 A 7.3 A
No load input current VIN = 20 V, 5 VOUT, 1/0 A, 3.3 VOUT, 2/0 A with auto-skip mode 1.5 mA
OUTPUT CHARACTERISTICS
Output voltage VOUT1 5 V
Output voltage regulation Line regulation (VIN = 8 V–20 V) 0.1%
Load regulation (VIN = 12 V, VOUT1/0 A–10 A with auto-skip mode), Voutput2: off 0.5%
Output voltage ripple VIN = 12 V, VOUT1/ 10 A , Voutput2: off 32 mVpp
Output load current VIN = 8 V–20 V 0 8 10 A
Output over current VIN = 12 V 12.9 A
Switching frequency VIN = 12 V, Voutput1/10 A 300 kHz
Efficiency VIN = 12 V, Vout1/10 A, Vout2: off 95.69%
Output voltage Vout2 3.3 V
Output voltage regulation Line regulation (VIN = 8 V–20 V) 0.1%
Load regulation (VIN = 12 V, VOUT 2/0 A–10 A with auto-skip mode), Voutput1: off 0.5%
Output voltage ripple VIN = 12 V, Vout2/10 A , Voutput1: off 30 mVpp
Output load current VIN = 8 V–20 V 0 8 10 A
Output over current VIN = 12 V 12.9 A
Switching Frequency VIN = 12 V, Voutput2/10 A 355 kHz
Efficiency VIN = 12 V, Vout2 at 10 A, Vout1: off 94.33%
Operating temperature 25 °C