LCS700-708
Conditions
SOURCE = 0 V; TJ = 0 to 100 °C
Parameter
Symbol
Min
Typ
Max
Units
VCC = 12 V, VCCH = 12 V
(Unless Otherwise Specified)
VCCH Supply Undervoltage Lockout
Driver exits UVLO state when VCCH exceeds
UVLOH+
VCCH Start Threshold
VUVLO(H+)
VUVLO(H-)
8.2
7.4
8.5
7.5
8.9
8.1
V
V
V
Driver enters UVLO state when VCCH falls
below UVLOH-
VCCH Shutdown
Threshold
VCCH Start-Up/
Shutdown Hysteresis
VUVLO(H)HYST
0.65
0.75
1.00
High-Voltage Supply Undervoltage/Overvoltage Enable
OV/UV Overvoltage
Shutdown Threshold
% of
VSD(H)
VOV(H)
Overvoltage assertion threshold
129
124
2.35
77
131
126
2.40
79
133
128
2.45
81
OV/UV Overvoltage
Recovery Threshold
% of
VSD(H)
VOV(L)
Overvoltage de-assertion threshold
Undervoltage de-assertion threshold
Undervoltage assertion threshold
OV/UV pin resistance to G
OV/UV Undervoltage
Start Threshold
VSD(H)
V
OV/UV Undervoltage
Shutdown Threshold
% of
VSD(H)
VSD(L)
OV/UV Pin
Input Resistance
RIN(OVUV)
3.0
5.0
6.6
MW
Reference
Reference Voltage
VREF
IREF
IREF = 4 mA
3.25
1
3.40
3.50
4
V
Current Source
Capability of VREF Pin
mA
mF
VREF Capacitance
LLC Oscillator
CREF
Required external coupling on VREF pin
25
1000
5.0
kHz
%
Frequency Range
FRANGE
FMIN(ACC)
FMIN(ACL)
RFB = 37.9 kW to VREF , 180 kHz
RFB = 154 kW to VREF , 50 kHz
-5.0
-7.5
Accuracy of Minimum
Frequency Limit
7.5
IFB = IDT/BF, RFMAX = 12.5 kW,
Accuracy of Maximum
Frequency Limit
FMAX(ACC)
-7.5
49
7.5
51
%
%
FMAX = 510 kHz
Duty symmetry of the half-bridge wave-
form, CFB = 4.7 nF, CDT/BF = 4.7 nF, 250 kHz.
Use recommended layout
Duty Balance
Dead-TimeB
DLLC
tD
RFMAX = 7 kW, RBURST = 39.6 kW
330
ns
DT/BF Control
Current Range
IDT/BF
30
430
mA
Threshold applies after exiting soft-start
mode for burst setting BT1
ISTOP1
ISTOP2
ISTOP3
49.8
43.9
37.1
Threshold applies after exiting soft-start
mode for burst setting BT2
IFB Threshold to Stop
LLC Switching
% of IDT/BF
Threshold applies after exiting soft-start
mode for burst setting BT3
21
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Rev. B 062011
POWERINT [ Power Integrations ]
