Datasheet

Electrical data VIPer20A-E
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Table 5. Error amplifier section
Table 6. PWM comparator section
Table 7. Shutdown and overtemperature section
Symbol Parameter Test conditions Min Typ Max Unit
V
DDREG
V
DD
Regulation Point I
COMP
=0mA (see Figure 5)
12.6 13 13.4 V
∆V
DDreg
Total Variation
T
J
= 0 to 100°C
2%
G
BW
Unity Gain Bandwidth
From Input =V
DD
to
Output = V
COMP
COMP pin is open
Figure 15
150 KHz
A
VOL
Open Loop Voltage Gain
COMP pin is open
Figure 15
45 52 dB
G
m
DC Transconductance
V
COMP
=2.5V(see Figure 5)
1.1 1.5 1.9 mA/V
V
COMPLO
Output Low Level
I
COMP
=-400µA; V
DD
=14V
0.2 V
V
COMPHI
Output High Level
I
COMP
=400µA; V
DD
=12V
4.5 V
I
COMPLO
Output Low Current Capability
V
COMP
=2.5V; V
DD
=14V
-600 µA
I
COMPHI
Output High Current
Capability
V
COMP
=2.5V; V
DD
=12V
600 µA
Symbol Parameter Test conditions Min Typ Max Unit
H
ID
∆V
COMP
/ ∆I
DPEAK
V
COMP
= 1 to 3 V
4.267.8V/A
V
COMPoff
V
COMP
Offset I
DPEAK
= 10mA
0.5 V
I
Dpeak
Peak Current Limitation
V
DD
= 12V; COMP pin open
0.50.670.9 A
t
d
Current Sense Delay to Turn-
Off
I
D
= 1A
250 ns
t
b
Blanking Time 250 360 ns
t
on(min)
Minimum On Time 350 1200 ns
Symbol Parameter Test conditions Min Typ Max Unit
V
COMPth
Restart Threshold (see Figure 8) 0.5 V
t
DISsu
Disable Set Up Time (see Figure 8) 1.7 5 µs
T
tsd
Thermal Shutdown
Temperature
(see Figure 8) 140 170 190 °C
T
hyst
Thermal Shutdown Hysteresis (see Figure 8) 40 °C