TPS65185: Power management forum

NIKHITHA ANTONY

Part Number: TPS65185

In our design, we are using E-ink mobius technology display. So whether PMIC IC TPS65185 supports mobius technology or not?

Kindly check and confirm

over 3 years ago

0 Gerard Copeland over 3 years ago

TI__Genius 10380 points

Hi,

Typically the TPS65185's ability to support certain displays will depend on the display's current requirements. Is this something you can share for the E-ink Mobius?

Thanks,

Gerard

0 NIKHITHA ANTONY over 3 years ago in reply to Gerard Copeland

Intellectual 340 points

Current requirements of the selected display is shown below.

0 NIKHITHA ANTONY over 3 years ago

Intellectual 340 points

Maximum currents of the selected display are provided :

Positive supply VPOS pin, current = 200mA ; At negative supply VNEG pin, current = 199.14mA ; At positive charge pump VDDH_D, current = 0.99mA; At negative charge pump VEE_D, current = 17.13mA; Main input current = 19.53 mA.

Could you please check and confirm whether this current requirements of display match with the selected PMIC

0 NIKHITHA ANTONY over 3 years ago

Intellectual 340 points

Maximum currents of the selected display are provided :

Could you please check and confirm whether this current requirements of display match with the selected PMIC

0 NIKHITHA ANTONY over 3 years ago

Intellectual 340 points

Maximum currents of the selected display are provided :

Could you please check and confirm whether this current requirements of display match with the selected PMIC

0 Gerard Copeland over 3 years ago in reply to NIKHITHA ANTONY

TI__Genius 10380 points

Hi,

Thank you for providing the current specs. Unfortunately the max negative charge pump current for TI's E-ink PMICs is 15 mA (TPS651851), and this will not be able to support this panel's VEE_D requirement of 17.13 mA.

Thanks,

Gerard

0 NIKHITHA ANTONY over 3 years ago in reply to Gerard Copeland

Intellectual 340 points

Thank you for your reply. Instead of maximum current, current range is shown below. Could you please check.

Positive supply VPOS pin, current = 1.44mA - 200mA ; At negative supply VNEG pin, current = 1.46mA - 199.14mA ; At positive charge pump VDDH_D, current = 0.88mA - 0.99mA; At negative charge pump VEE_D, current = 1.38mA - 17.13mA; Main input current = 8.99mA - 19.53 mA.

Could you please check and confirm whether this current requirements of display match with the selected PMIC

0 Gerard Copeland over 3 years ago in reply to NIKHITHA ANTONY

TI__Genius 10380 points

Hi,

The max VEE_D current is still 17.13 mA, correct?

If so, the assessment still stands - the PMIC charge pump cannot support this rail because the maximum output current is 15 mA.

Thanks,

Gerard

0 NIKHITHA ANTONY over 3 years ago in reply to Gerard Copeland

Intellectual 340 points

Thank you for your reply