Use the following steps for
forward/charge mode verification with the EVM default settings per the ILIM_HIZ,
CELLS, VCHG and ICHG pin resistors:
- Turn on PS #1 set to 12V if not
already on. In the EVM software, click Read/Read All registers twice. Verify
that
- All Fault and Status
registers do not report any fault conditions.
-
PG_STAT reports Power
Good
-
CHARGE_STAT reads Fast
Charge
-
STAT LED is on and not
flashing
- To confirm pre-charge regulation,
take DMM measurements as follows:
- Measure → V(BAT)
(SRN-TP14 and AGND) = 5V ±0.1V.
- Measure → I(BAT) =
100mA ±50mA.
- To confirm battery fast charge current regulation, increase
Load #1 to 7.6V and take DMM measurements as follows:
- Measure → V(BAT)
(BAT-TP13 and AGND) = 7.6V ±0.1V.
- Measure → I(BAT) =
1A ±100mA.
- To confirm input current limit operation, in the EVM software,
lower IINDPM current to 500mA and then take DMM measurement ( or PS #1
measurement if accurate) as follows: