SCY99194 Datasheet, PDF (7/40 Pages) ON Semiconductor – Fixed Frequency Current Mode Controller

SCY99194
ELECTRICAL CHARACTERISTICS (For typical values T_J = 25°C, for min/max values T_J = −40°C to +125°C, V_HV = 125 V,
V_CC = 11 V unless otherwise noted)
Characteristics
Test Condition
Symbol
Min
Typ
Max
REMOTE CONTROL ON FB PIN
Pull−up current in off mode
Go To Off mode timer
OVERLOAD PROTECTION
V_CC > V_CC(off)
V_CC > V_CC(off)
I_OFF
t_GTOM
−
5
−
500
600
800
Fault timer duration
Autorecovery mode latch−off time duration
OVERPOWER PROTECTION
t_fault
t_autorec
108
128
178
0.85 1.00 1.35
V_HV to I_OPC conversion ratio
Current flowing out of CS pin (Note 7)
FB voltage above which I_OPC is applied
FB voltage below which is no I_OPC applied
LATCH−OFF INPUT
V_HV = 125 V
V_HV = 162 V
V_HV = 325 V
V_HV = 365 V
V_HV = 365 V
V_HV = 365 V
K_OPC
I_OPC(125)
I_OPC(162)
I_OPC(325)
I_OPC(365)
V_FB(OPCF)
V_FB(OPCE)
−
−
−
−
105
2.12
−
0.54
0
20
110
130
2.35
2.15
−
−
−
−
150
2.58
−
High threshold
Low threshold
Current source for direct NTC connection
During normal operation
During soft−start
Blanking duration on high latch detection
Blanking duration on low latch detection
Clamping voltage
V_Latch going up
V_Latch going down
V_Latch = 0 V
I_Latch = 0 mA
I_Latch = 1 mA
V_OVP
V_OTP
2.35
2.5
2.65
0.76
0.8
0.84
I_NTC
65
95
105
I_NTC(SSTART)
130
190
210
t_Latch(OVP)
35
50
70
t_Latch(OTP)
−
350
−
V_{clamp0(Latch)}
1.0
1.2
1.4
V_{clamp1(Latch)}
1.8
2.4
3.0
TEMPERATURE SHUTDOWN
Temperature shutdown
T_J going up
T_TSD
−
150
−
Temperature shutdown hysteresis
T_J going down
T_TSD(HYS)
−
30
−
5. Internal supply current only, currents sourced via FB pin is not included (current is flowing in GND pin only).
6. Guaranteed by design.
7. CS pin source current is a sum of I_bias and I_OPC, thus at V_HV = 125 V is observed the I_bias only, because I_OPC is switched off.
Unit
mA
ms
ms
s
mA / V
mA
V
V
V
V
mA
ms
ms
V
°C
°C
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