FAN6208 Fairchild Semiconductor, FAN6208 Datasheet - Page 6

• Manufacturer Part Number: FAN6208
• Description: FAN6208 is a synchronous rectification (SR) controller for isolated LLC or LC resonant converters that can drive two individual SR MOSFETs emulating the behavior of rectifier diodes
• Manufacturer: Fairchild Semiconductor

© 2010 Fairchild Semiconductor Corporation
FAN6208 • Rev. 1.0.1
Electrical Characteristics
V
Gate Section
Timing Estimator Section
DD
t
t
t
t
PD_HIGH_DETL1
PD_HIGH_DETL2
PD_LOW_ DETL1
PD_LOW_ DETL2
t
t
t
V
t
t
Symbol
V
t
t
=20V, T
t
SHRINK-RNG
INHIBIT_HF1
INHIBIT_LF1
INHIBIT_LF2
INHIBIT_HF2
t
t
BLANKING1
BLANKING2
t
SHRINK-DT
V
ON_MAX1
ON_MAX2
Green_DH
OL1
OH1
t
t
t
R1
Z1
F1
DEAD
t
t
K
DW
DB
V
V
V
t
t
R
F2
R2
OH2
Z2
OL2
A
=25°C, unless otherwise specified. All voltages are with respect to GND unless otherwise noted.
Gate Output Voltage
Maximum (Clamping)
Gate Output Voltage LOW
Gate Output Voltage HIGH
Rising Time
Falling Time
Propagation Delay to Gate
Output HIGH (DETL
Trigger)
Propagation Delay to Gate
Output LOW (DETL
Trigger)
Maximum On-Time
Gate Inhibit Time (from
Turn-Off to Next Turn-On)
Gate Inhibit Time (from
Turn-Off to Next Turn-On)
Blanking Time for SR Turn-
Off Triggered by DETL
High (Minimum On-Time)
Gate ON-Time Increase
Rate Between Two
Consecutive Cycles
Detection Window for
Insufficient Dead Time
(from Gate Turn-Off to
DETL HIGH)
Gate Shrink Time by
Insufficienct Dead Time
Dead Time by Timing
Estimator (70kHz ~
140kHz, V
Dead Time by Timing
Estimator (160kHz ~
240kHz, V
DETL HIGH-to-LOW
Debounce Time for Gate
Turn-on Trigger
Gate Shrink by DETL
Ringing around Zero
DETL Pull-HIGH Time
Threshold for Green Mode
Parameter
RP
RP
< 1.5V)
> 1.5V)
V
V
V
V
V
V
V
t
(DET Floating)
t
(DET Floating)
Trim Maximum On-Time
V
V
t
R
t
t
t
t
R
F
ON
DETL
DETL
DETL
DETL
DD
DD
DD
DD
GATE
DD
GATE
: 100%~90%, V
RP
RP
: 0V~2V, V
RP
(n) / t
=20V
=12V; I
=12V; I
=12V; C
=12V; C
=20KΩ, t
< 1.5V
> 1.5V
=4μs, R
=6μs, R
=2.5μs, R
=3.8μs, R
=2V to 9V
=9V to 2V
Conditions
ON
(n-1) %
O
O
6
L
L
=100mA
=100mA
RP
RP
DD
=6nF;
=6nF;
DETL
RP
RP
=20KΩ
=20KΩ
=12V
=43KΩ
=43KΩ
=5μs
DD
=12V
Min.
1.25
1.00
210
570
220
560
9.0
1.8
10
30
30
80
18
9
Continued on the following page…
Typ.
10.5
1.45
1.25
120
120
300
140
125
300
720
320
670
150
2.1
1.2
12
70
50
24
Max.
12.0
1.70
1.50
120
150
390
870
420
780
0.5
2.5
14
70
30
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Units
μs
μs
μs
μs
μs
μs
ns
ns
ns
ns
ns
ns
ns
ns
%
V
V
V