Data Sheet

© 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN7621S • Rev. 1.0.1 6
FAN7621S — 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
V
CssH
Beginning Voltage to Discharge C
SS
0.9 1.0 1.1 V
V
CssL
Beginning Voltage to Charge C
SS
and
Reset Protections
0.16 0.20 0.24 V
V
OVP
LV
CC
Over-Voltage Protection LV
CC
> 21V 21 23 25 V
V
AOCP
AOCP Threshold Voltage
ΔV/Δt=-0.1V/µs
-1.0 -0.9 -0.8 V
t
BAO
AOCP Blanking Time
(2)
V
CS
< V
AOCP
;
ΔV/Δt=-0.1V/µs
50 ns
V
OCP
OCP Threshold Voltage
ΔV/Δt=-1V/µs
-0.64 -0.58 -0.52 V
t
BO
OCP Blanking Time
(2)
V
CS
< V
OCP
;
ΔV/Δt=-1V/µs
1.0 1.5 2.0 μs
t
DA
Delay Time (Low-Side) Detecting from
V
AOCP
to Switch Off
(2)
ΔV/Δt=-1V/µs
250 400 ns
T
SD
Thermal Shutdown Temperature
(2)
110 130 150
°C
Dead-Time Control Section
D
T
Dead Time
(3)
350 ns
Notes:
2. These parameters, although guaranteed, are not tested in production.
3. These parameters, although guaranteed, are tested only in EDS (wafer test) process.