PFS757HG POWERINT [Power Integrations, Inc.], PFS757HG Datasheet - Page 28

• Manufacturer Part Number: PFS757HG
• Description: Combined Two-Switch Forward and Flyback Power Supply Controllers with Integrated High Voltage MOSFETs
• Manufacturer: POWERINT [Power Integrations, Inc.]

NOTES:
A. The current limit is boosted for the first 34 ms of main supply switching and returns to normal level after this period.
B. V
C. Level 1 R
D. Level 1 R
Rev. C 02/11
Standby Circuit Protection (cont.)
ENABLE Pin Current
Limit Selection Range #2
ENABLE Pin Current
Limit Selection Range #3
ENABLE Pin Current
Limit Selection Range #4
Standby Current Limit
General Circuit Protection
Power Coefficient
Initial Current Limit
Leading Edge
Blanking Time (Main)
Leading Edge Blanking
Time (Standby)
Current Limit
Delay (Main)
Current Limit
Delay (Standby)
Thermal Shutdown
Temperature
Thermal Shutdown
Hysteresis
Auto-Restart ON-Time
at f
Auto-Restart Duty
Cycle Standby
Supply Current
DRAIN Supply Current
28
OSC
DDH(SHUNT)
Parameter
Standby
TFS757-764HG
FB
EN
minus V
= open, Level 2 R
= open, Level 2 R
DDH(UV_ON)
is equal to 250 mV minimum.
Symbol
I
I
I
I
I
I
I
T
LIM(2)(DSB)
LIM(3)(DSB)
LIM(4)(DSB)
LIM(1)(DSB)
LIM(2)(DSB)
LIM(3)(DSB)
LIM(4)(DSB)
t
t
LEB(DSB)
DC
Δ I
t
ILD(DSB)
SD(HYST)
t
FB
EN
LEB(D)
T
I
ILD(D)
t
I
I
I
INIT
AR
S1
S2
2
SD
LIM
f
= 511 kW, Level 3 R
= 280 kW, Level 3 R
AR
I
I
I
I
L
L
L
L
SOURCE = 0 V; T
= 20 mA, di/dt = 125 mA/ms, T
= 20 mA, di/dt = 143 mA/ms, T
= 20 mA, di/dt = 105 mA/ms, T
= 20 mA, di/dt = 95 mA/ms, T
I
LIM
(Unless Otherwise Specified)
EN Open (Standby MOSFET
I
2
(I
f = I
(No MOSFETs Switching)
L
= 100 mA) / I
di/dt = 125 mA/ms
LIM(2)(DSB)(TYP)
FB
Switching at f
EN
EN Current > I
Conditions
= 232 kW.
= 137 kW, Level 4 R
T
T
T
T
T
T
T
T
Start-up
Start-up
Start-up
J
J
J
J
J
J
J
J
= 25 °C
= 25 °C
= 25 °C
= 25 °C
= 25 °C
= 25 °C
= 25 °C
= 25 °C
J
= 0 °C to 100 °C
× f
LIM
S(SB)(OSC)(TYP)
(I
OSC
L
DIS
= 20 mA)
)
J
J
J
J
= 25 °C
= 25 °C
= 25 °C
= 25 °C
EN
= 63.4 kW.
0.9 × I
0.75 ×
I
LIM(MIN)
Min
450
600
675
495
170
170
400
600
2
f
8.5-18
18-33
33-60
Typ
500
650
750
550
215
215
150
150
118
750
950
2.2
80
55
64
I
2
f
1.12 × I
1000
1200
Max
550
700
825
605
www.powerint.com
2
f
Units
A
mA
ms
mA
mA
mA
°C
°C
mA
ns
ns
ns
ns
%
2
%
Hz