SLVUB56A July 2017 – September 2021 TPS54424
The TPS54424EVM-779 is provided with input/output connectors and test points as shown in Table 2-1. To support the full current capability of an unmodified TPS54424EVM-779, a power supply capable of supplying greater than 2 A must be connected to J1 through a pair of 20-AWG wires or better. The load must be connected to J2 through a pair of 20-AWG wires or better. The maximum load current capability before hitting current limit is typically 6 A to 7 A. Wire lengths must be minimized to reduce losses in the wires. Test point TP1 provides a place to monitor the VIN input voltages with TP7 providing a convenient ground reference. TP4 is used to monitor the output voltage with TP9 as the ground reference.
| Reference Designator | Function |
|---|---|
| J1 | VIN input voltage connector (see Table 1-1 for VIN range) |
| J2 | VOUT terminal to connect load |
| J3 | 2-pin header for enable. Add shunt to connect EN to ground and disable device. |
| J4 | 2-pin header for power good resistor pullup connection. Add a shunt to pull up to VOUT only if VOUT < 6.0 V. If VOUT > 6.0 V keep open and use external supply with TP5 to pullup PGOOD. |
| TP1 | VIN test point |
| TP2 | EN test point |
| TP3 | SW node test point |
| TP4 | 1.8-V test point |
| TP5 | PGOOD pullup test point |
| TP6 | PGOOD test point |
| TP7 | PGND test point |
| TP8 | SS/TRK test point |
| TP9 | PGND test point |
| TP10 | Test point between voltage divider network and output of TPS54424 converter. Used for loop response measurements. |
| TP11 | PGND test point |
| TP12 | AGND test point |
| TP13 | AGND test point |
| TP14 | PGND test point |
| TP15 | Test point for supplying external CLK for synchronization. C20 and R10 should be populated to use. |