TIDT399 July   2024

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Required Equipment
    3. 1.3 Considerations
    4. 1.4 Dimensions
  6. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Thermal Images
    3. 2.3 Bode Plots
  7. 3Waveforms
    1. 3.1 Switching
    2. 3.2 Output Voltage Ripple
    3. 3.3 Load Transients
    4. 3.4 Start-Up Sequence
  8.   Trademarks

Description

This reference design utilizes the LM61495-Q1 synchronous buck regulator. This device features internal top and bottom field-effect transistors (FET), which are configured as a synchronous inverting buck-boost converter to provide an adjustable output of between –7.5V and –12V capable of delivering a maximum of 4A of current to the load from a +9V to +18V input. The output voltage is adjusted by providing an analog voltage signal to the Vcntl_1 (TP4) test point, referenced to GND. Control voltages between 0V and 5V correspond to output voltages between –12V and –7.5V, respectively.