Use the following procedures for line and load regulation measurement.
- Connect VOUT to J3 and VOUT_GND to J5 Figure 7-1.
- Ensure that the electronic load is set to draw 0 ADC.
- Connect VIN to J1 and VIN_GND to J2 Figure 7-1.
- Connect the USB interface adapter as shown in Figure 7-3.
- Increase VIN from 0 V to 12 V using the digital multimeter to measure input voltage.
- Launch the Fusion GUI software. See the screen shots in Section 12 for more information.
- Configure the EVM operating parameters as desired.
- Use the other digital multimeter or the oscilloscope to measure output voltage VOUT at TP2 and TP10 as you vary the external voltage source.
Table 10-1 List of Test Points for Line and Load Measurements| Test Point | Node Name | Description |
|---|
| TP2 | LocS+ | Sense VOUT + locally across C5. Use for efficiency and ripple measurements |
| TP10 | LocS– | Sense VOUT - locally across C5. Use for efficiency and ripple measurements |
| TP4 | PVIN | Sense VIN + across C10 |
| TP13 | PGND | Sense VIN - across C10 |
- Vary the load from 0 ADC to maximum rated output 25 ADC. VOUT must remain in regulation as defined in Table 3-1.
- Vary VIN from 5 V to 14 V. VOUT must remain in regulation as defined in Table 3-1.
- Decrease the load to 0 A.
- Decrease VIN to 0 V or turn off the supply.