SLVU677A August 2012 – August 2021 TPS54494
The TPS54494EVM is provided with input/output connectors and test points as shown in Table 4-1. A power supply capable of supplying 4 A must be connected to J1 through a pair of 20 AWG wires. The loads must be connected to J3 and/or J2 through a pair of 20 AWG wires. The maximum load current capability is 2 times 2 A. Wire lengths must be minimized to reduce losses in the wires. Test point TP1 provides a place to monitor the input voltage (VIN) with TP7 providing a convenient ground reference. TP4 and TP3 are used to monitor the output voltages with TP5 and TP6 as the ground references.
| Reference Designator | Function |
|---|---|
| J1 | VIN (see Table 1-1 for VIN range) |
| J2 | VOUT2, 1.5 V at 2 A maximum |
| J3 | VOUT1, 3.3 V at 4 A maximum |
| J4 | EN1 control. Connect EN1 to off to disable converter 1; connect EN1 to on to enable converter 1. |
| J5 | EN2 control. Connect EN2 to off to disable converter 2; connect EN2 to on to enable converter 2. |
| JP1 | Jumper to give the possibility to use another input voltage for converter 2. |
| TP1 | VIN test point at VIN connector |
| TP2 | VIN2 test point after JP1. |
| TP3 | Output voltage test point for converter 2. |
| TP4 | Output voltage test point for converter 1. |
| TP5, TP6, TP7 | Ground test points at input and output connectors. |
| TP8 | EN2 test point. |
| TP9 | EN1 test point. |
| TP10 | Switch node test point of converter 1. |
| TP11 | Switch node test point of converter 2. |
| TP12 | VREG5 test point. |
| TP13 | PG1 test point. |
| TP14 | PG2 test point. |
| TP15 | Analog ground test point. |