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LCS700-708 Datenblatt(PDF) 21 Page - Power Integrations, Inc.

Teilenummer LCS700-708
Bauteilbeschribung  Integrated LLC Controller, High-Voltage Power MOSFETs and Drivers
PDF  26 Pages
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Hersteller  POWERINT [Power Integrations, Inc.]
Direct Link  http://www.powerint.com
Logo POWERINT - Power Integrations, Inc.

LCS700-708 Datenblatt(HTML) 21 Page - Power Integrations, Inc.

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Rev. B 062011
21
LCS700-708
www.powerint.com
Parameter
Symbol
Conditions
SOURCE = 0 V; T
J = 0 to 100 °C
V
CC = 12 V, VCCH = 12 V
(Unless Otherwise Specified)
Min
Typ
Max
Units
VCCH Supply Undervoltage Lockout
VCCH Start Threshold
V
UVLO(H+)
Driver exits UVLO state when V
CCH exceeds
UVLOH+
8.2
8.5
8.9
V
VCCH Shutdown
Threshold
V
UVLO(H-)
Driver enters UVLO state when V
CCH falls
below UVLOH-
7.4
7.5
8.1
V
VCCH Start-Up/
Shutdown Hysteresis
V
UVLO(H)HYST
0.65
0.75
1.00
V
High-Voltage Supply Undervoltage/Overvoltage Enable
OV/UV Overvoltage
Shutdown Threshold
V
OV(H)
Overvoltage assertion threshold
129
131
133
% of
V
SD(H)
OV/UV Overvoltage
Recovery Threshold
V
OV(L)
Overvoltage de-assertion threshold
124
126
128
% of
V
SD(H)
OV/UV Undervoltage
Start Threshold
V
SD(H)
Undervoltage de-assertion threshold
2.35
2.40
2.45
V
OV/UV Undervoltage
Shutdown Threshold
V
SD(L)
Undervoltage assertion threshold
77
79
81
% of
V
SD(H)
OV/UV Pin
Input Resistance
R
IN(OVUV)
OV/UV pin resistance to G
3.0
5.0
6.6
MW
Reference
Reference Voltage
V
REF
I
REF = 4 mA
3.25
3.40
3.50
V
Current Source
Capability of VREF Pin
I
REF
4
mA
V
REF Capacitance
C
REF
Required external coupling on VREF pin
1
mF
LLC Oscillator
Frequency Range
F
RANGE
25
1000
kHz
Accuracy of Minimum
Frequency Limit
F
MIN(ACC)
R
FB = 37.9 kW to VREF , 180 kHz
-5.0
5.0
%
F
MIN(ACL)
R
FB = 154 kW to VREF , 50 kHz
-7.5
7.5
Accuracy of Maximum
Frequency Limit
F
MAX(ACC)
I
FB = IDT/BF, RFMAX = 12.5 kW,
F
MAX = 510 kHz
-7.5
7.5
%
Duty Balance
D
LLC
Duty symmetry of the half-bridge wave-
form, C
FB = 4.7 nF, CDT/BF = 4.7 nF, 250 kHz.
Use recommended layout
49
51
%
Dead-TimeB
t
D
R
FMAX = 7 kW, RBURST = 39.6 kW
330
ns
DT/BF Control
Current Range
I
DT/BF
30
430
mA
I
FB Threshold to Stop
LLC Switching
I
STOP1
Threshold applies after exiting soft-start
mode for burst setting BT1
49.8
% of I
DT/BF
I
STOP2
Threshold applies after exiting soft-start
mode for burst setting BT2
43.9
I
STOP3
Threshold applies after exiting soft-start
mode for burst setting BT3
37.1



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