TIDT333 may   2023

 

  1.   Description
  2.   Features
  3.   Applications
  4. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Input and Output Signals
  5. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Efficiency Data
    3. 2.3 Thermal Images
    4. 2.4 Bode Plots
  6. 3Waveforms
    1. 3.1 Switching
    2. 3.2 Output Voltage Ripple
    3. 3.3 Short-Circuit Protection
    4. 3.4 Load Transients
    5. 3.5 Start-Up

1.2 Input and Output Signals

Table 1-2 Signals and Functions
Signal Function
GND Return path for VIN and VOUT.
SYNC External synchronization signal. Refer to the TPS7H500x-SP Radiation-Hardness-Assured 2-MHz Current Mode PWM Controllers data sheet for signal requirements.
VBIAS Bias power for TPS7H5001. The LM117H self-bias circuit generates a 13.2-V rail to power internal circuitry. Alternatively, an external 12-V rail can be provided and the self-biasing circuit can then be removed.
VIN Main power input. Operating range is 50 V to 150 V.
VOUT Main 28-V power output. Designed to power loads up to 5 A.