SLVUBW7 May 2020
- TPS7H4001QEVM-CVAL Evaluation Module User's Guide
3 TPS7H4001QEVM-CVAL Initial Setup
This section provides the test instruments required and the connections to the EVM as shown in Figure 2.
- Remove Jumper J9 so that enable pins to all devices is no longer grounded.
- Input DC power supply
- Set for 5-V DC, 30-A current limit
- Connect positive output of DC supply to pin 1 of connector J2 (PVIN) and negative terminal of supply to pin 2 of connector J2 for ground using 16 AWG wire or larger. [Note: For more precise measurements, eliminating the IR voltage drop in the input cables is achieved by using a power supply source with sensing ports and connecting between TP4 to PVIN and TP18 to GND.]
- DC electronic load
- Connect positive DC input of e-load to pin 2 of connector J4 (VOUT) using 16 AWG wire.
- Connect negative DC input of e-load to pin 1 of connector J4 (VOUT) using 16 AWG wire.
- Connect voltage monitoring sensing ports of e-load across test points TP15 (VOUT1) and TP20 (GND). A voltage meter can be used to monitor this voltage also.
- Oscilloscope
- CH1 - Connect voltage scope probe to scope probe test point J6 (PH1) to monitor the phase node. DC coupled, Full BW, 2 V/div, Rising Edge Trigger at 0.5 V.
- CH2 - Connect voltage scope probe to scope probe test point J13 (PH2) to monitor the phase node. DC coupled, Full BW, 2 V/div, Rising Edge Trigger at 0.5 V.
- CH3 - Connect voltage scope probe to scope probe test point J12 (PH3) to monitor the phase node. DC coupled, Full BW, 2 V/div, Rising Edge Trigger at 0.5 V.
- CH4 - Connect voltage scope probe to scope probe test point J10 (PH4) to monitor the phase node. DC coupled, Full BW, 2 V/div, Rising Edge Trigger at 0.5 V.
Figure 2. TPS7H4001QEVM-CVAL Initial Setup Table 2. Summary of Connections
| Reference Designator | Silkscreen | Function |
|---|---|---|
| J2 | PVIN | Input power: pin 1 = 5 V, pin 2 = GND (Vsupply) |
| J4 | VOUT | Output voltage: pin 1 = GND, pin 2 = Vout ≈1 V (e-load) |
| J6 | PH1 | Phase switching node scope probe test point (Scope CH-1) |
| J13 | PH2 | Phase switching node scope probe test point (Scope CH-2) |
| J12 | PH3 | Phase switching node scope probe test point (Scope CH-3) |
| J10 | PH4 | Phase switching node scope probe test point (Scope CH-4) |
| TP15 | VOUT1 | VOUT1 test point (e-load monitor) |
| TP4 | PVIN | PVIN test point (Vsupply_sense) |
| TP17, TP18 | GND | GND test points (Vsupply_sense, e-load monitor) |