SLVUCA1 November   2021 TPS7H1210-SEP

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Features
    2. 1.2 Applications
  3. 2Setup
    1. 2.1 Input/Output Connectors and Jumper Descriptions
      1. 2.1.1 J1, J4 (–)VIN
      2. 2.1.2 J6 GND
      3. 2.1.3 J2, J5 (–)VOUT
      4. 2.1.4 J7 GND
      5. 2.1.5 J3 EN
      6. 2.1.6 TP1-5 Test Points
    2. 2.2 Equipment Setup
  4. 3Operation
  5. 4Adjustable Operation
  6. 5Test Results
    1. 5.1 Enable, Disable, and Soft Start Timing
    2. 5.2 Output Load Transients
    3. 5.3 PSRR
    4. 5.4 Noise Spectral Density
  7. 6Board Layout
  8. 7Schematic and Bill of Materials

2.1.1 J1, J4 (–)VIN

Negative input power supply voltage connectors. The negative input lead and ground return lead from the input power supply should be twisted and kept as short as possible to minimize EMI transmission. Additional bulk capacitance should be added between J1 and J6 if the supply leads are greater than six inches. For example, a 47-µF electrolytic capacitor can be populated at C5 to improve the transient response of the TPS7H1210 while eliminating unwanted ringing on the input due to long wire connections. An isolated (+) power supply may be used if the (+) lead is connected to J6 (GND) and the (–) lead is connected to J1 (–VIN). J1 is provided as a bananna jack input. J4 is provided as shielded coax SMA connection.