SLVU659C March   2012  – June 2021 TPS62125

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Background
    2. 1.2 Performance Specification
    3. 1.3 Modifications
      1. 1.3.1 Input and Output Capacitors
      2. 1.3.2 Feedforward Capacitor
      3. 1.3.3 Loop Response Measurement
  3. 2Setup
    1. 2.1 Input/Output Connector Descriptions
    2. 2.2 Setup
  4. 3TPS62125EVM-044 Test Results
  5. 4Board Layout
  6. 5TPS62125EVM-044 Photos
  7. 6Schematic and Bill of Materials
    1. 6.1 Schematic
    2. 6.2 Bill of Materials
  8. 7Revision A files
    1. 7.1 Board Layout
    2. 7.2 Schematic and Bill of Materials
      1. 7.2.1 Schematic
      2. 7.2.2 Bill of Materials
  9. 8Revision History

2.1 Input/Output Connector Descriptions

J1, Pin 1 and 2 – VINPositive input connection from the input supply for the EVM.
J1, Pin 3 and 4 – S+/S-Input voltage sense connections. Measure the input voltage at this point.
J1, Pin 5 and 6 – GNDInput return connection from the input supply for the EVM.
J2, Pin 1 and 2 – VOUTOutput voltage connection.
J2, Pin 3 and 4 – S+/S-Output voltage sense connections. Measure the output voltage at this point.
J2, Pin 5 and 6 – GNDOutput return connection.
J3 – PG/GNDThe PG output appears on pin 1 of this header with a convenient ground on pin 2.
JP1 – ENEN pin input jumper. Place the supplied jumper across ON and EN to turn on the IC. Place the jumper across OFF and EN to turn off the IC. Do not install the supplied jumper to utilize the adjustable enable threshold voltage feature of the IC.
JP2 – PG Pullup VoltagePG pin pullup voltage jumper. Place the supplied jumper on JP2 to connect the PG pin pullup resistor to Vout. Alternatively, the jumper can be removed and a different voltage can be supplied on pin 1 to pull up the PG pin to a different level. This externally applied voltage must remain below 12 V.