dpa422 Power Integrations, Inc., dpa422 Datasheet - Page 22
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dpa422
Manufacturer Part Number
dpa422
Description
Highly Integrated Dc-dc Converter Ics For Power Over Ethernet & Telecom Applications
Manufacturer
Power Integrations, Inc.
Datasheet
1.DPA422.pdf
(36 pages)
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Rev. S 12/07
Softstart Time
PWM Gain
PWM Gain
Temperature Drift
Dynamic Impedance
Dynamic Impedance
Temperature Drift
CONTROL Pin Internal
Filter Pole
Shutdown/Auto-Restart
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-Sense (L) and External Current Limit (X) Inputs
Line Undervoltage
Threshold Current and
Hysteresis (L Pin)
Line Overvoltage or
Remote ON/OFF
Threshold Current and
Hysteresis (L Pin)
Remote ON/OFF
Negative Threshold
Current and
Hysteresis (X Pin)
Control Functions (cont.)
22
Parameter
DPA422-426
Symbol
V
V
DC
V
DC
C(AR)Hyst
I
t
I
C(CH))
C(AR)U
f
SOFT
C(AR)L
Z
I
I
REM
(AR)
UV
OV
C
(AR)
reg
V
T
T
T
Softstart: V
SOURCE = 0 V; T
C
J
J
J
Average Current at the Beginning of
= 25 °C
= 25 °C
= 25 °C
= 5.0 V; V
During Startup and Auto-Restart:
C
C
(Unless Otherwise Specifi ed)
Control
Control
T
T
T
J
J
J
= 25 °C; I
= 25 °C; I
= 25 °C; DC
= 22 μF; f
= 22 μF; f
C
See Figure 33
D
= 5.0 V; V
Conditions
See Note A
See Note A
= 16 V & 40 V; T
T
V
V
J
Threshold from Off to On
Threshold from On to Off
Threshold from On to Off
Threshold from Off to On
Threshold from On to Off
Threshold from Off to On
= 25 °C
X
X
C
C
= 0 V
= 0 V
= I
= I
J
OSC
OSC
MIN
= -40 to 125 °C
C(skip)
C(skip)
D
Hysteresis
Hysteresis
Hysteresis
= 400 kHz;
= 400 kHz;
to DC
= 16 V & 40 V;
+ I
+ I
B
B
MAX
J
)/2
)/2
= 25 °C
Min
44.5
-5.2
117
-28
-27
4.5
0.8
10
48
2
-0.01
-21.5
-25.5
0.18
Typ
-0.6
135
131
-22
-19
5.8
4.8
3.8
4.5
15
30
50
47
-4
5
1
3
4
Max
49.5
149
-18
-16
7.2
5.1
22
10
52
-3
www.powerint.com
%/mA/°C
Units
%/mA
%/ °C
%/°C
kHz
mA
ms
Hz
μA
μA
μA
%
Ω
V
V
V