DPA423 Power Integrations, Inc., DPA423 Datasheet - Page 23

• Manufacturer Part Number: DPA423
• Description: Highly Integrated DC-DC Converter Ics For Distributed Power Architecturesthe Dpa-switch ic Family Introduces a Highly Integratedsolution For DC-DC Conversion Applications in The 16-75 Vdcinput Range.dpa-switch Uses The Same Proven Topology as Topswit
• Manufacturer: Power Integrations, Inc.

Line Overvoltage
or Remote ON/
OFF Threshold
Current and
Hysteresis (L pin)
Remote ON/OFF
Negative Thresh-
old Current and
Hysteresis (X pin)
L pin Short Circuit
Current
X pin Short Circuit
Current
L pin Voltage
(Positive Current)
X pin Voltage
(Negative Current)
Maximum Duty
Cycle Reduction
Onset Threshold
Current
Remote OFF
DRAIN Supply
Current
L pin Voltage
Turn-On Thresh-
old in Synchronous
Mode
On-Time
Pulse Width for
Synchronization
Off-Time
Pulse Width for
Synchronization
Synchronous Turn
On Delay
LINE-SENSE (L) AND EXTERNAL CURRENT LIMIT (X) INPUTS (cont)
Parameter
Symbol
t
delay(sync)
t
t
I
V
on(sync)
off(sync)
I
I
I
D(RMT)
I
X(SC)
L(SC)
L(DC)
I
V
REM
V
L(TH)
OV
X
L
T
T
SOURCE = 0 V
V
V
V
J
J
D
X
X
= 25 °C
= 25 °C
From Synchronous On to Drain
(Unless Otherwise Specified)
= 40 V
= 0 V
= 0 V
Conditions
See Figure 32
f
f
OSC
OSC
I
Threshold from On to Off
Threshold from Off to On
Threshold from On to Off
Threshold from Off to On
Remote OFF using L Pin
Hysteresis
Hysteresis
I
X
T
X
Turn-On
V
= -150 µA
J
V
I
= -50 µA
I
= 300 kHz
= 400 kHz
L
L
L
= 25 °C
;
L
= I
= I
= 0 V
T
= V
Normal Mode
J
V
UV
OV
= -40 to 125 °C
L
C
= Floating
V
L
=V
C
-230
-270
-105
2.05
0.25
Min
117
175
120
120
-27
2.1
0.6
-21.5
-25.5
-170
-230
Typ
2.35
1.35
1.25
135
131
240
4.5
-85
2.5
0.6
0.9
55
4
1
DPA423-426
Max
2250
3080
-185
149
380
-16
-65
2.6
2.9
1.1
1.5
1.4
250
7.7
Units
4/04
mA
L
µA
µA
µA
µA
µA
ns
µs
ns
V
V
23