SLVUBJ9A July 2020 – October 2020 TPS54JB20
The TPS54JB20EVM is provided with input/output connectors and test points as shown in Table 2-1. A power supply capable of supplying greater than 15 A must be connected to J1 and J2 through a pair of 20-AWG wires or better. The load must be connected to J3 and J4 through a pair of 20-AWG wires or better on each connector. The maximum load current capability is 20 A.
Wire lengths must be minimized to reduce losses in the wires. Test point VIN_SENSE+ provides a place to monitor the input voltage with Test point VIN_SENSE– providing a convenient ground reference. Test point VOUT+ is used to monitor the output voltage with VOUT– as the ground reference.
| REFERENCE DESIGNATOR | FUNCTION |
|---|---|
| J1 | VIN input voltage connector (see Table 1-1 for VIN range) |
| J2 | PGND connection for input |
| J3 | VOUT, 3.3 V at 20 A maximum |
| J4 | PGND connection for output |
| J5 | 3-pin header for enable. ON -> Connects EN to VIN to enable the device. OFF- > Connects EN to GND to disable device. Floating EN will prevent the part from operating. |
| J6 | 12-pin header for mode selection (see Table 1-3) |
| VIN_SENSE+, VIN_SENSE– | VIN voltage sensing test points |
| VOUT+, VOUT– | VOUT voltage sensing test points |
| VCC, PGND | VCC voltage forcing/sensing test points |
| PGOOD | PGOOD output test point (pulled up to VCC pin through a 30-kΩ resistor) |
| EN | EN test point |
| VSNS+, VSNS– | Remote sensing test points |
| AGND | AGND test point |
| BODE+, BODE– | Loop measurement test points (BODE+ is at the same net as VOUT, but is closer to FB divider and IC) |
| SS/REFIN | Can be used to monitor the reference voltage |
| SW | Switch Node test point |