SLVU379A August 2010 – August 2021 TPS54521
The TPS54521EVM-607 is provided with input/output connectors and test points as shown in Table 2-1. A power supply capable of supplying 3 A must be connected to J1 through a pair of 20 AWG wires. The jumper across JP1 must be in place. See Section 1.3.5 for split input voltage rail operation. The load must be connected to J3 through a pair of 20 AWG wires. The maximum load current capability must be 5 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 TP2 providing a convenient ground reference. TP8 is used to monitor the output voltage with TP9 as the ground reference.
| REFERENCE DESIGNATOR | FUNCTION |
|---|---|
| J1 | PVIN input voltage connector. See Table 1-1 for VIN range. |
| J2 | VIN input voltage connector. Not normally used |
| J3 | VOUT, 3.3 V at 5-A maximum |
| J4 | 2-pin header for tracking output and ground |
| J5 | 2-pin header for tracking voltage input and ground |
| JP1 | PVIN to VIN jumper. Normally closed to tie VIN to PVIN for common rail voltage operation |
| JP2 | 2-pin header for enable. Connect EN to ground to disable, open to enable. |
| TP1 | PVIN test point at PVIN connector |
| TP2 | GND test point at PVIN connector |
| TP3 | VIN test point at VIN connector |
| TP4 | GND test point at VIN connector |
| TP5 | PH test point |
| TP6 | Slow start / track in test point |
| TP7 | Test point between voltage divider network and output. Used for loop response measurements. |
| TP8 | Output voltage test point at VOUT connector |
| TP9 | GND test point at VOUT connector |
| TP10 | PWRGD test point |