SLVU151A April 2013 – August 2021 TPS54350 , TPS54550
The TPS54550EVM-158 is provided with input/output connectors and test points as shown in Table 4-1. Connect a power supply capable of supplying 3 A to J1 through a pair of 20 AWG wires. The load should be connected to J3 through a pair of 20 AWG wires. The maximum load current capability should 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. TP3 is used to monitor the output voltage with TP4 as the ground reference.
| REFERENCE DESIGNATOR | FUNCTION |
|---|---|
| J1 | VIN, 12 V nominal, 6 V to 17 V |
| J2 | OUT, 5 V at 5 A maximum |
| J3 | 2-pin header for bi-directional synchronization signal. |
| J4 | 2-pin header for enable. Connect EN to ground to disable, open to enable. |
| TP1 | VIN test point at VIN connector |
| TP2 | GND test point at VIN |
| TP3 | Output voltage test point at OUT connector |
| TP4 | GND test point at OUT connector |
| TP5 | Test point between voltage divider network and R3. Used for loop response measurements. |
| TP6 | Test point on power-good pullup resistor. Tie to 3.3 V or 5 V if power-good signal is used. |
| TP7 | Test point for power good. |
| TP8 | Test point for external UVLO. |
| TP9 | Test point for timing resistor. |