Re-Programming the EEPROM of the TPS65218D0 Device
23
SLVUBH5 – October 2018
Copyright © 2018, Texas Instruments Incorporated
Software Instructions
The EEPROM re-programming was successful because the IPG-UI remembers the previous value of bits
before the
Read All
button is pressed and highlights changes in blue. There are some bits highlighted in
blue in
, but these differences do not indicate a failed EEPROM re-programming. The
PASSWORD
register (0x10) has reset to 0x00 because the power cycle has cleared this info that is not
backed by EEPROM. Bit 6 of the
ENABLE2
register (0x12) is set to 1b now because GPIO3 is enabled
after all of the DC/DC converters and LDO1 have been enabled. Bit 6 of the
SLEW
register (0x1A) has
reset to 0b because the
GODSBL
bit is not backed by EEPROM. None of the EEPROM-backed bits
(highlighted in red) that were changed in the example re-programming have been highlighted in blue.
The successful re-programming of the EEPROM can also be verified on the BOOSTXL-TPS65218
hardware by measuring the output voltages of DCDC1, DCDC2, DCDC3, DCDC4, and LDO1 with a multi-
meter and by measuring the power-on sequence timing with an oscilloscope.
CAUTION
The BOOSTXL-TPS65218 board is intended for re-programming the EEPROM
of the TPS65218D0 only. Significant loads should not be applied to the DC/DC
converters, LDO1 regulator, or LS1-3 load switches using the BOOSTXL-
TPS65218 test points. The newly re-programmed TPS65218D0 device must be
removed from the socket and soldered down onto a TPS65218EVM-100 board
or another board designed to carry the current for maximum loads to evaluate
the full performance of the TPS65218D0 device.
