ZSPM4521
Evaluation Kit Manual
Kit Description
February 12, 2013
© 2013 Zentrum Mikroelektronik Dresden AG
— Rev. 1.00
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the
prior written consent of the copyright owner. The information furnished in this publication is
subject to changes without notice.
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Figure 3.1 Charging State Diagram
CONSTANT VOLTAGE MODE
FULL-CHARGE CONSTANT
CURRENT (CC) MODE
PRE-CHARGE STATE
INITIALIZE STATE
INITIALIZE
Waiting for Valid
Charging Conditions
NO
PRE-CHARGE
MPPT w/Pre-charge
Current Limit
VBAT > V
PRECHG
Threshold
YES
NO
1C CHARGING
MPPT w/1C Current Limit and
Full Charge Timer
YES
No Faults &
VBAT < V
RESTART
VBAT< V
PRECHG
Threshold
VBAT
=V
TERMINATION
& I
CHARGE
< I
EOC
YES
NO
YES
NO
END OF CHARGE
VBAT regulated to V
TERMINATION
with EOC Timer
VBAT =
V
TERMINATION
NO
YES
I
CHARGE
< Top Off
End Current
NO
EN
YES
