ATR28XXD Series
Specifications
TCASE = -55°C to +85°C, VIN = +28V ± 5% unless otherwise specified
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Power Output
Soldering
-0.5V to 50VDC
Internally limited, 36W typical
300°C for 10 seconds
Recommended Operating
Maximum Operating
Storage
Temperature Range1
-55°C to +85°C
-55°C to +115°C
-65°C to +135°C
Condition
-55°C ≤ TC ≤ +85°C, VIN = 28 VDC
±5%, CL=0, unless otherwise
specified
ATR2812D
Typ
ATR2815D
Typ
PARAMETER
Min
Max
Min
Max
Units
STATIC CHARACTERISTICS
OUTPUT
Voltage
VIN = 16 to 40 VDC
IOUT = 0 to Full Load
VDC
ADC
mV p-p
VDC
±
±
±
±
±
±
±
±
±
±
±
11.76
0.0
12.00
12.24
14.70
0.0
15.00
15.30
±1.0
85
Current 5
±1.25
Ripple
Full Load, 20KHz to 2MHz
40
12.00
85
40
15.00
Accuracy
°
±
12.12
TCASE = 25 C, Full Load
11.88
30
14.85
30
15.15
Power1
W
REGULATION
Line
V
IN = 16 to 40 VDC
75
120
75
150
±
5
mV
mV
%
Load
IOUT = 0 to Full Load
VIN = 16, 28, and 40 VDC
CROSS REGULATION6
±
5
INPUT
Voltage Range
Current
16.0
100
28.0
40.0
75
18
16.0
100
28.0
40.0
75
18
VDC
mADC
mADC
mA p-p
%
No Load, pin 2 = open
Inhibited, pin 2 tied to pin 10
Full Load
Full Load TC = +25°C
Input to output @500 VDC
Ripple Current
EFFICIENCY
ISOLATION
25
82
50
25
82
50
Ω
M
CAPACITIVE LOAD
No effect on performance
100
100
µ
F
°
TC = +25 C (total for both outputs)
Load Fault Power Dissipation
Short Circuit
Overload, TC = +25°C
IOUT = Full Load
9
14
600
700
9
14
600
700
W
W
KHz
KHz
Switching Frequency
SYNC Frequency Range7
DYNAMIC CHARACTERISTICS
Step Load Changes
Output
500
500
500
500
50% Load to100% Load
No Load to 50% Load
mVpk
mVpk
±
±
100
100
Transient
±
250
±
250
Recovery2
50% Load to 100% Load
No Load to 50% Load
50% Load to No Load
µs
µs
ms
25
500
3
25
500
3
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
mVpk
mVpk
ms
±
-600
±
180
-600
5
5
180
Transient
Recovery 2
5
5
ms
TURN-ON
Overshoot
VIN = 16 to 40 VDC
IOUT = O and Full Load
VIN = 16 to 40 VDC
0
14
14
600
25
25
0
14
14
600
25
25
mVpk
ms
ms
Delay3
Load Fault Recovery
Notes to Specifications
1. Above +85°C case temperature, derate output power linearly to 0 at +115°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 30 watts.
6. 3W load on output under test, 3W to 27W on other output.
7. Sync. Input signal: VIL = -0.5V Min, VIN = 2.5V Min, 10% to 90% duty cycle,
0.8V Max
11.5V Max
2
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