ADDC02808PB–SPECIFICATIONS
ELECTRICAL CHARACTERISTICS (TC = +25؇C, VIN = 28 V dc ؎0.5 V dc, unless otherwise noted; full temperature range is
–55؇C to +90؇C; all temperatures are case and TC is the temperature measured at the center of the package bottom.)
Case
Test
ADDC02808PB
Parameter
Temp
Level Conditions
Min Typ
Max
Units
INPUT CHARACTERISTICS
Steady State Operating Input Voltage Range1
Abnormal Operating Input Voltage Range
(Per MIL-STD-704D)1
Input Overvoltage Shutdown
No Load Input Current
Full
VI
IO = 1.25 A to 25 A Pulsed
18
28
40
V
Full
VI
I
VI
VI
IO = 1.25 A to 25 A Pulsed
16
50
50
55
90
2
V
V
mA
mA
+25°C
+25°C
+25°C
52.5
45
1
Disabled Input Current
OUTPUT CHARACTERISTICS2, 3
Output Voltage (VO)
+25°C
Full
Full
+25°C
+25°C
+25°C
Full
+25°C
+25°C
+25°C
I
IO = 1.25 A to 25 A, VIN = 18 V to 40 V dc
IO = 1.25 A to 25 A, VIN = 18 V to 40 V dc
IO = 1.25 A to 20 A, VIN = 16 V to 50 V dc
IO = 25 A Pulsed, VIN = 18 V to 40 V dc
VIN = 28 V dc, IO = 1.25 A to 25 A Pulsed
IO = 25 A, 5 kHz – 2 MHz BW
VIN = 18 V to 40 V dc, Pulsed
IO = 25 A, Open Remote Sense Connection
VO = 90% VOUT Nom
7.92 8.00
7.84
7.84
1
2.5
10
1.25
125
8.08
8.16
8.16
5
10
30
V
V
V
mV
mV
mV p-p
A
% VO nom
% IO max
A
VI
VI
VI
VI
I
VI
V
V
Line Regulation
Load Regulation
Output Ripple/Noise4
Output Current (IO)5
Output Overvoltage Protection
Output Current Limit
Output Short Circuit Current
25
130
I
40
ISOLATION CHARACTERISTICS
Isolation Resistance
+25°C
+25°C
I
I
Input to Output or Any Pin to Case at 500 V dc
100
MΩ
DYNAMIC CHARACTERISTICS4
Step Changes In Load (min to max)
Step Changes In Load (max to min)
(Reference Section Entitled “Transient Response”)
(Reference Section Entitled “Response at End
of Pulse”)
Soft Start Turn-On Time
+25°C
I
IO = 25 A, From Inhibit High to Status High
6
10
ms
THERMAL CHARACTERISTICS
Efficiency
+25°C
Min
Max
+25°C
Min
I
IO = 12.5 A
IO = 12.5 A
IO = 12.5 A
IO = 25 A
IO = 25 A
IO = 25 A
IO = 25 A
77.5
77.5 80
76
73.5 76
73.5
VI
VI
I
VI
VI
V
%
%
%
%
%
°C
Max
+90°C
71
Hottest Junction Temperature5
110
CONTROL CHARACTERISTICS
Clock Frequency
ADJUST (Pin 3) V ADJ
STATUS (Pin 4)
VOH
Full
+25°C
VI
I
IO = 2 A
0.85
3.1
0.99
3.3
MHz
V
3.2
+25°C
+25°C
I
I
IOH = 400 µA
IOL = 1 mA
2.4
4.0
0.15
V
V
VOL
0.7
VAUX (Pin 5)
VO (nom)
INHIBIT (Pin 6)
VIL
IIL
VI (Open Circuit)
SYNC (Pin 7)6
VIH
+25°C
I
IAUX = 5 mA, Load Current = 12.5 A
VIL = 0.5 V
14.65 15.15 15.65
V
+25°C
+25°C
+25°C
I
I
I
0.5
1.2
15
V
mA
V
+25°C
+25°C
+25°C
+25°C
I
I
I
V
4.0
V
µA
V
IIH
VIH = 7.0 V
IO = 20 A
175
ISHARE (Pin 8)
TEMP (Pin 9)
2.45 2.55
3.90
2.65
V
NOTES
150 V dc upper limit rated for transient condition of up to 50 ms. 16 V dc lower limit rated for continuous operation during emergency condition. Steady state and
abnormal input voltage range require source impedance sufficient to insure input stability at low line. See sections entitled System Instability Considerations and Input
Voltage Range.
2Measured at the remote sense points.
3Unit regulates output voltage to zero load; tests performed at low continuous load and 200 W pulsed load.
4CLOAD = 1,000 µF. Output ripple/noise measured at converter output; may be smaller at external load capacitance. Unit is stable for C LOAD ranging from 500 µF to
4,000 µF.
5Refer to section entitled “Pulse Output Power vs. Pulse Length” for more information.
6Unit has internal pull-down; refer to section entitled Pin 7 (SYNC).
Specifications subject to change without notice.
–2–
REV. A
ADI [ ADI ]
