ATR28XXD Series
Specifications
TCASE = -55°C to +125°C, VIN = +28V ± 5% unless otherwise specified
Absolute Maximum Ratings
Input voltage
-0.5V to +50VDC
Power Output
Internally limited, 36W typical
300°C for 10 seconds
Soldering temperature
Recommended Operating temperature
Maximum Operating temperature
Storage case temperature
-55°C to +125°C
-55°C to +135°C
-65°C to +135°C
Temperature Range1
Condition
-55°C ≤ TC ≤ +125°C, VIN = 28 VDC
±5%, CL=0, unless otherwise
specified
ATR2812D/HB
Typ
ATR2815D/HB
PARAMETER
Min
Max
Min
Typ
Max
Units
STATIC CHARACTERISTICS
OUTPUT
Voltage
Current
VIN = 16 to 40 VDC
IOUT = 0 to Full Load
VDC
ADC
mV p-p
VDC
±11.76
±12.00
±12.24
±1.25
85
±14.70
±15
±15.30
±1.0
85
5
0.0
0.0
Ripple
Full Load, 20KHz to 2MHz
40
40
15.00
Accuracy
°
±
±
±
±
±
±
15.15
TCASE = 25 C, Full Load
11.88
30
12.00
12.12
14.85
30
Power1
W
REGULATION
Line4
VIN = 16 to 40 VDC
IOUT = 0 to Full Load
VIN = 16, 28, and 40 VDC
75
120
±5
75
150
±5
mV
mV
%
Load4
CROSS REGULATION6
INPUT
Voltage Range
Current
16
28
40
75
18
50
16
28
18
40
75
18
50
VDC
mADC
mADC
mA p-p
%
No Load, pin 2 = open
Inhibited, pin 2 tied to pin 10
Full Load
Ripple Current
EFFICIENCY
25
82
25
82
80
79
Full Load TC = +25°C
ISOLATION
CAPACITIVE LOAD
Input to output @500 VDC
No effect on performance
100
100
MΩ
µF
100
100
°
TC = +25 C (total for both outputs)
Load Fault Power Dissipation
Short Circuit
Overload, TC = +25°C
IOUT = Full Load
9.0
14
600
700
9.0
14
600
700
W
W
KHz
KHz
Switching Frequency
SYNC Frequency Range7
DYNAMIC CHARACTERISTICS
Step Load Changes
Output4
500
500
500
500
50% Load to 100% Load
No Load to 50% Load
mVpk
mVpk
±
±
±
±
450
±750
100
450
100
Transient
±250
±760
±250
Recovery 2
50% Load to 100% Load
No Load to 50% Load
50% Load to No Load
µ
µs
ms
s
25
500
3.0
70
1500
5.0
25
500
3.0
70
1500
5.0
Step Line Changes
Output
Input step 16 to 40 VDC
Input step 40 to 16 VDC
Input step 16 to 40 VDC
Input step 40 to 16 VDC
1200
-1500
10
1500
-1500
10
mVpk
mVpk
ms
±
±
180
-600
5.0
180
-600
5.0
Transient
Recovery 2
10
10
ms
5.0
5.0
TURN-ON
Overshoot
VIN = 16 to 40 VDC
IOUT = O to Full Load
VIN = 16 to 40 VDC
0.0
14
14
600
25
25
0.0
14
14
600
25
25
mVpk
ms
ms
Delay3
Load Fault Recovery
Notes to Specifications
1. Above +125°C case temperature, derate output power linearly to 0 at +135°C case.
2. Recovery time is measured from the initiation of the input transient to where VOUT has returned to within ±1% of VOUT at 50% load.
3. Turn-on delay time measurement is for either an application of power at the input or a signal at the inhibit pin.
4. Load current split equally between +VOUT and –VOUT
.
5. Up to 90% of Full Power is available from either output provided. The total power output does not exceed 30W.
6. 3W load on output under test, 3W to 27W on other output.
7. Sync. Input signal: VIL = -0.5V Min, 0.8V Max and VIN = 2.5V Min, 11.5V Max for 10% to 90% duty cycle.
4
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