Data Sheet

© 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN7621 • Rev. 1.0.3 6
FAN7621 — PFM Controller for Half-Bridge Resonant Converters
Electrical Characteristics (Continued)
T
A
=25°C and LV
CC
=17V unless otherwise specified.
Symbol Parameter Test Conditions Min. Typ. Max. Unit
Protection Section
I
OLP
OLP Delay Current V
CON
=4V 3.8 5.0 6.2 μA
V
OLP
OLP Protection Voltage V
CON
> 3.5V 4.5 5.0 5.5 V
V
OVP
LV
CC
Over-Voltage Protection LV
CC
> 21V 21 23 25 V
V
AOCP
AOCP Threshold Voltage -1.0 -0.9 -0.8 V
t
BAO
AOCP Blanking Time 50 ns
V
OCP
OCP Threshold Voltage -0.64 -0.58 -0.52 V
t
BO
OCP Blanking Time
(2)
1.0 1.5 2.0 μs
t
DA
Delay Time (Low-Side) Detecting from
V
AOCP
to Switch Off
(2)
250 400 ns
T
SD
Thermal Shutdown Temperature
(2)
110 130 150
°C
I
SU
Protection Latch Sustain LV
CC
Supply
Current
LV
CC
=7.5V 100 150 μA
V
PRSET
Protection Latch Reset LV
CC
Supply
Voltage
5 V
Dead-Time Control Section
D
T
Dead Time 350 ns
Note:
2. These parameters, although guaranteed, are not tested in production.