DPA423 Power Integrations, Inc., DPA423 Datasheet - Page 22

• 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.

PWM Gain
Temperature Drift
Dynamic
Impedance
Dynamic Impedance
Temperature Drift
CONTROL Pin
Internal Filter Pole
CONTROL Pin
Charging Current
Charging Current
Temperature Drift
Auto-restart Upper
Threshold Voltage
Auto-restart Lower
Threshold Voltage
Auto-restart
Hysteresis Voltage
Auto-restart Duty
Cycle
Auto-restart
Frequency
Line Under-
Voltage Threshold
Current and
Hysteresis (L pin)
22
Softstart Time
PWM Gain
DPA423-426
CONTROL FUNCTIONS (cont.)
SHUTDOWN/AUTO-RESTART
LINE-SENSE (L) AND EXTERNAL CURRENT LIMIT (X) INPUTS
Parameter
L
4/04
Symbol
V
V
V
DC
DC
C(AR)Hyst
I
t
C (AR)U
C(CH)
C (AR)L
f
Z
I
SOFT
(AR)
UV
C
(AR)
reg
V
V
T
SOURCE = 0 V
Average Current at the Beginning of
C
C
J
During Startup and Auto-Restart:
C
C
=5.0 V; V
=5.0 V; V
= 25 °C
(Unless Otherwise Specified)
CONTROL
CONTROL
T
T
T
J
J
J
= 25 °C; I
= 25 °C; I
= 25 °C; DC
= 22 µF; f
See Figure 32
= 22 µF; f
Conditions
D
D
See Note A
=16 V & 40 V; T
Threshold from Off to On
Threshold from On to Off
=16 V & 40 V; T
See Note A
Softstart:
V
V
X
X
;
C
C
= 0 V
= 0 V
T
= (I
J
= (I
Hysteresis
= -40 to 125 °C
MIN
OSC
OSC
C(skip)
C(skip)
to DC
= 400 kHz;
= 400 kHz;
+ I
+ I
J
J
MAX
B
B
=25 °C
=25 °C
)/2
)/2
Min
44.5
-28
-5.2
4.5
0.8
10
48
2
-0.01
Typ
0.18
-0.6
-19
-22
5.8
4.8
3.8
15
30
50
47
-4
5
1
3
Max
49.5
5.1
7.2
-18
22
10
52
-3
%/mA/°C
Units
%/mA
%/°C
%/°C
kHz
ms
mA
Hz
µA
%
Ω
V
V
V