BQ77PL900 EEPROM power supply

Camillo Ta

Hi,

i want to know if i have to supply VBAT = 20 V or I can use an higher voltage cause my battery pack (10 cells) is about 36V. Morevoer, during charging it can arrive to 42 V.

Thank you

over 13 years ago

0 WM5295 over 13 years ago

TI__Guru 54715 points

You should plan to program your board before cell connection so you can control the voltage to the board. You may be able to program successfully at a higher voltage. There is a voltage range at which the charge pump can run and reduce the voltage such that the programming will not be successful. Please see the last post at http://e2e.ti.com/support/power_management/battery_management/f/180/t/47065.aspx for suggestions.

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BQ77PL900 EEPROM power supply