Rohm BD71631QWZ-EVK-001, Руководство пользователя

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© 2021 ROHM Co., Ltd.
No. 64UG016E Rev.001
MAY.2021
User’s Guide
BD71631QWZ-EVK-001
Table 2. Charging state transition condition
No. State transition Condition
①
SUSPEND -> CHARGE UVLO, TSD not detect
and VIN > V
BAT
+0.3 V
and V
BAT
OVP not detect
and Temp Error not detect
Continue to satisfy the condition for 25 ms
②
CHARGE -> TOP_OFF Charge current < I
TERM
Continue to satisfy the condition for 25 ms
③
TOP_OFF -> CHARGE Charge current > I
TERM
Continue to satisfy the condition for 25 ms
④
TOP_OFF -> DONE
Continue to satisfy the
③
condition for 15 s
⑤
CHARGE or TOP_OFF or
TEMP_ERROR_1 or
TEMP_ERROR_2
-> BATTERY ERROR V
BAT
OVP detect
or 10 hours safety timer expired
⑥
DONE -> CHARGE V
BAT
< Re-charge voltage
Continue to satisfy the condition for 25 ms
⑦
CHARGE -> TEMP_ERROR_1 or
TOP_OFF -> TEMP_ERROR_2 Temp Error detect
Continue to satisfy the condition for 25 ms
⑧
TEMP_ERROR_1 -> CHARGE or
TEMP_ERROR_2 -> TOP_OFF Temp Error not detect
Continue to satisfy the condition for 25 ms
⑨
ALL State -> SUSPEND UVLO, TSD detect
or VIN < V
BAT
+0.3 V
Table 3. Safety timer and Internal control settings for each state of LEDCNT
State Battery charge
10 hours safety timer
LEDCNT
SUSPEND Stop Stop and reset Hi-Z
CHARGE Charge Count Low
TOP_OFF Charge Count Low
DONE Stop Stop and reset Hi-Z
BATTERY_ERROR Stop Stop and reset Hi-Z
TEMP_ERROR_1 Stop Count Hi-Z
TEMP_ERROR_2 Stop Count Hi-Z
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