Texas Instruments TPS65290 Ultra-Low Power Management Unit Evaluation Module TPS65290LMEVM TPS65290LMEVM Datenbogen
Produktcode
TPS65290LMEVM
Test Procedure
2.2.2
USB2ANY GUI Launch
Change as the red box selection as shown figure
. Change the divider of the input frequency to
the same as that in
to make the communication speed 4 kHz. Start with low communication
frequency for easier verification.
Make sure each red box is properly modified.
Then, clock “Set SPI” to make the change enabled.
“Set SPI” should be clicked everytime after any in the red boxes are changed.
Probe that voltages of CS, SCL, MOSI and MISO are all zero.
Figure 4. Set Up for the USB2ANY
2.2.3
Test With SPI Interface Buffer Disabled for Lowest IDDQ Mode
When JP11 is connected to GND, TPS65290 provides only Vmicro voltage and other blocks are disabled
to maintain minimum power consupmtion. Therefore the SPI communication doesn’t work at Vmicro only.
Use
to maintain minimum power consupmtion. Therefore the SPI communication doesn’t work at Vmicro only.
Use
for the proper jumper connection for Vmicro only mode.
Table 5. Jumper Connections for Low-IDDQ Measurement
Vmicro MODE
FIT THESE JUMPERS
DO NOT FIT THESE JUMPERS
JP11, JP13
TPS65290BM
JP1, JP4, JP8
JP8A, JP10
GND
TPS65290ZB
JP1, JP4, JP10, JP8A
JP8
GND
TPS65290LM
JP1, JP4, JP10, JP8A
JP8
GND
The default value of the micro and buck/boost are described in
. The buck-boost can be enabled
by connecting JP13 to Vmicro. Keep in mind that the loading of an oscilloscope probe or a multi-meter can
increase the input current.
increase the input current.
8
Low IDDQ PMIC for Battery Energy Harvesting Applications
SLVU906 – April 2013
Copyright © 2013, Texas Instruments Incorporated