Texas Instruments TPS59640EVM-751 Evaluation Module TPS59640EVM-751 TPS59640EVM-751 Datenbogen
Produktcode
TPS59640EVM-751
Test Procedure
Figure 18. TPS59640EVM-751 CPU GUI Setup Window
7.1.2
GPU
1. Connect the LOAD to GPU terminal J11 and V3 at J16. Ensure correct polarity.
2. Add scope probe on the TP37 for GPU G_Vcore ripple measurement.
3. Push S4 to ON position to enable the VR_ON of TPS59640. The VR_ON LED lights up.
4. Now you are ready to send SVID commends for GPU. Using the pulldown menu:
Address:
01 GPU,
Commend: SetVIDslow, Payload:
1.23V
5. Click send Commend, and GPU GPOOD LED lights up. See the GUI window shown
6. Measure V3: GPU G_Vcore at J16 and A1: 12VBAT input current.
7. Vary GPU LOAD from 0 Adc to 30 Adc; GPU Vcore must remain in load line.
8. Vary 12VBAT from 9 V to 20 V; GPU Vcore must remain in line regulation.
9. Push S4 to OFF position to disable GPU Vcore controller.
10. Decrease LOAD to 0 A, and disconnect the LOAD from terminal J11.
11. Disconnect V3 from J16.
12. Disconnect scope probe from TP37.
13. Exit SVID GUI window: click File
→
click Exit.
29
SLUU796
–
January 2012
Using the TPS59640EVM-751 IMVP-7, 3-Phase CPU/1-Phase GPU SVID
Power System
Copyright
©
2012, Texas Instruments Incorporated