SLVU281B May 2009 – August 2021 TPS54620
The TPS54620EVM-374 is provided with input/output connectors and test points as shown in Table 2-1. A power supply capable of supplying 4 A must be connected to J1 through a pair of 20 AWG wires. The jumper across J3 must be in place. See Section 1.3.5 for split input voltage rail operation. The load must be connected to J7 through a pair of 20 AWG wires. The maximum load current capability must be 6 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 | PVIN to VIN jumper. Normally closed to tie VIN to PVIN for common rail voltage operation. |
| J24 | 2-pin header for enable. Connect EN to ground to disable, open to enable. |
| J5 | 2-pin header for tracking voltage input and ground. |
| J6 | 2-pin header for tracking output and ground. |
| J7 | VOUT, 3.3 V at 6 A maximum. |
| 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. |