SCYW99143 Datasheet, PDF (34/35 Pages) ON Semiconductor – Universal High Voltage Control Block

CONFIDENTIAL AND PROPRIETARY
NOT FOR PUBLIC RELEASE
SCYW99143
Efficient operating
mode
Extra Low
Consumption
BO
(VCC > VCC_off ) & BO &
( V_{_REM} < V_{_REM_off} ) &
Latch = 0
((Vcc > Vcc_on) +
Reset
Start
Vcc −> 5V
BO
(Vcc_stop is active &
Charge VCC Vcc > Vcc_off)) & BO
Vcc −> 22V
PWM_ON V_REM > V_REM_off
Vcc = Vcc _off – Vcc _max
REMOTE
Discharge
REMOTE
Vcc = 5V
Mode
PWM _ON = 0
PWM_ON = 0
PWM_ON = 1
Vcc −> 5V
Vcc = floating
BO
ÎÎÎÎÎÎÎÎÎ Vcc<Vcc_on &
Vcc_stop is not active
PWM_ON = 0
Vcc > 5V
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{X2 discharge = 0}
Latch
ÎÎÎÎÎÎÎÎÎ _Vcc=5V
PWM_ON = 0
TSD=1
TA−rec_timer = 1
TSD
Vcc = xV
VCC_fault
Vcc = 5V
PWM_ON = 0
PWM _ON = 0
TA −rec _timer = 1
BO
BO fault
Vcc = 5V
PWM _ON = 0
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ X2Timer
Vcc = xV
PWM_ON = x
ÎÎÎÎÎÎÎÎÎÎ ^{X2_timer = 1}
X2_timer = 0
X2 cap
Discharge
PWM _ON = 0
Vcc −> 0V
HV −> 0V
X2 detect = 1
Discharge
VCC
Vcc −> 0.7V
PWM _ON = 0
PWM_ON = 0
V_REM >V_REM _ON
X2 detect = 0
& X2_timer = 1
X2 detect = 0
Vcc > 1V
Figure 56. Operating Status Diagram for the Active ON Version
Efficient
operating mode
Extra Low
Consumption
BO
(VCC > VCC_off) & BO &
(V_REM > V_REM_off ) &
Latch = 0
((Vcc > Vcc_on) +
Reset
Start
Vcc −> 5V
PWM_ON = 0
BO
(Vcc_stop is active &
Charge VCC Vcc > Vcc_off)) & BO
Vcc −> 22V
PWM_ON = 0
V_REM < V_REM_off
PWM_ON ^{& Vcc < Vcc_off}
Vcc = Vcc _off – Vcc _max
PWM_ON = 1
REMOTE
Discharge
Vcc −> 5V
Vcc = 5V
REMOTE
Mode
Vcc = floating
PWM_ON = 1
BO
ÎÎÎÎÎÎÎÎÎ _{Vcc<Vcc_on &}
Vcc_stop is not active
PWM_ON = 1
Vcc < 5V
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{X2 discharge = 0}
ÎÎÎÎÎÎÎÎÎ Latch
Vcc = 5V
PWM_ON = 0
TSD=1
TA−rec_timer = 1
TSD
Vcc = xV
VCC_fault
Vcc = 5V
PWM_ON = 0
PWM_ON = 0
TA −rec _timer = 1
BO
BO fault
Vcc = 5V
PWM_ON = 0
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ X2Timer
Vcc = xV
PWM_ON = x
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ^X2_timer=1
X2_timer = 0
X2 cap
Discharge
PWM_ON = x
Vcc −> 0V
HV −> 0V
X2 detect = 1
Discharge
VCC
Vcc −> 0.7V
PWM_ON = 0
I_REM_bias = 1
V_REM <V_REM_ON
X2 detect = 0
& X2_timer = 1
X2 detect = 0
Vcc > 1V
Figure 57. Operating Status Diagram for the Active OFF Version
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