Texas Instruments A Single-Phase, D-CAP+™ Synchronous Buck Controller for Intel Core™ i3, i5, i7 Applications TPS59611EV TPS59611EVM-622 Datenbogen
Produktcode
TPS59611EVM-622
www.ti.com
Test Procedure
6.7
1.2-V IOH Configuration
6.7.1
1.2-V Enable Selection (J501)
1.2-V Enable can be set by J501, EN_1.2V
Default setting: Jumper shorts on J501 to disable 1.2 V
Default setting: Jumper shorts on J501 to disable 1.2 V
Table 16. 1.2-V Enable selection
Jumper set to
Selection
No Jumper
1.2V Enabled
Jumper on
1.2V Disabled
7
Test Procedure
7.1
Line/Load Regulation and Efficiency Measurement Procedure
The CPU measurement is performed in the following manner.
1. Set up EVM as described in
and
2. Ensure that the Load is set to constant resistance mode and sink 0 A.
3. Ensure that all the jumper configuration settings are per
3. Ensure that all the jumper configuration settings are per
4. Ensure that the S101 VR_ON enable switch is set to OFF before VIN is applied.
5. Increase VIN from 0 V to 12 V. Use V1 to measure VIN voltage.
6. Set switch S101 to ON to enable the controller.
7. Use V2 to measure Vcore_c voltage.
8. Vary Load from 0 Adc to 5 Adc; Vcore_c must remain in load regulation.
9. Vary VIN from 8 V to 14 V; Vcore_c must remain in line regulation.
10. Set switch S101 to OFF to disable the controller.
11. Decrease Load to 0 A.
12. Decrease VIN to 0 V.
5. Increase VIN from 0 V to 12 V. Use V1 to measure VIN voltage.
6. Set switch S101 to ON to enable the controller.
7. Use V2 to measure Vcore_c voltage.
8. Vary Load from 0 Adc to 5 Adc; Vcore_c must remain in load regulation.
9. Vary VIN from 8 V to 14 V; Vcore_c must remain in line regulation.
10. Set switch S101 to OFF to disable the controller.
11. Decrease Load to 0 A.
12. Decrease VIN to 0 V.
Other output testing is the same.
7.2
Onboard Transient Response Measurement
CPU and GPU Only
1. Set up EVM as described in
and
2. Ensure that all the jumper configuration settings are per
3. Remove the load from J102 for CPU or J202 for GPU
4. Ensure that VR_ON (S101 for CPU and S201 for GPU) is on OFF before VIN is applied.
5. Increase VIN from 0 V to 12 V. Use V1 to measure VIN voltage.
6. Use TP508 (DL_CLK) and TP209 (GND) to measure transient timing signal.
7. Push switch SW501 (CPU) or SW502 (GPU) to ON position (left), and dynamic load LED D503 for
4. Ensure that VR_ON (S101 for CPU and S201 for GPU) is on OFF before VIN is applied.
5. Increase VIN from 0 V to 12 V. Use V1 to measure VIN voltage.
6. Use TP508 (DL_CLK) and TP209 (GND) to measure transient timing signal.
7. Push switch SW501 (CPU) or SW502 (GPU) to ON position (left), and dynamic load LED D503 for
CPU and D502 for GPU illuminate.
8. Measure the Vcore_c or Vcore_G transient response by using TP116 (CPU) or TP216 (GPU).
17
SLUU465 – November 2010
An 8-V to 14-V Vin 2010 Atom™ E6xx— Tunnel Creek Power System
© 2010, Texas Instruments Incorporated