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AHP270XXS Series
Dynamic Characteristics -55°C ≤ TCASE ≤ +125°C, VIN = 270 Volts unless otherwise specified.
Notes to Specifications:
1.
Parameters not 100% tested but are guaranteed to the limits specified in the table.
2.
Recovery time is measured from the initiation of the transient to where VOUT has returned to within ±1.0 % of VOUT at 50% load.
3.
Line transient transition time
≥100s.
4.
Turn-on delay is measured with an input voltage rise time of between 100V and 500V per ms.
5.
Current limit point is that condition of excess load causing output voltage to drop to 90% of nominal.
6.
Parameter verified as part of another test.
7.
All electrical tests are performed with the remote sense leads connected to the output leads at the load.
8.
Load transient transition time
≥10s.
9.
Enable inputs internally pulled high. Nominal open circuit voltage
≈ 4.0VDC.
10.
All tests at no-load are performed after start-up of the converter.
The converter may fail to start when the output load is less than 1.0W. Under these circumstances,
the converter’s start-up circuitry will continue to cycle until an adequate load is present.
Parameter
Group A
Subgroups
Test Conditions
Min
Nom
Max
Unit
LOAD TRANSIENT RESPONSE
AHP27003R3S / AHP27005S
Amplitude
Recovery
Amplitude
Recovery
AHP27006S
Amplitude
Recovery
Amplitude
Recovery
AHP27009S
Amplitude
Recovery
Amplitude
Recovery
AHP27012S
Amplitude
Recovery
Amplitude
Recovery
AHP27015S
Amplitude
Recovery
Amplitude
Recovery
AHP27025S
Amplitude
Recovery
Amplitude
Recovery
AHP27028S
Amplitude
Recovery
Amplitude
Recovery
4, 5, 6
Notes 2, 8
Load Step 50%
100%
Load Step 10%
50%
Load Step 50%
100%
Load Step 10%
50%
Load Step 50%
100%
Load Step 10%
50%
Load Step 50%
100%
Load Step 10%
50%
Load Step 50%
100%
Load Step 10%
50%
Load Step 50%
100%
Load Step 10%
50%
Load Step 50%
100%
Load Step 10%
50%
-450
-600
-750
-900
-1200
450
200
450
400
450
200
450
400
600
200
600
400
750
200
750
400
900
200
900
400
1200
200
1200
400
1200
200
1200
400
mV
s
mV
s
mV
s
mV
s
mV
s
mV
s
mV
s
mV
s
mV
s
mV
s
mV
s
mV
s
mV
s
mV
s
LINE TRANSIENT RESPONSE
Amplitude
Recovery
Notes 1, 2, 3
VIN Step = 160 400 Volts
-500
500
mV
s
TURN-ON CHARACTERISTICS
Overshoot
Delay
4, 5, 6
Note 4
Enable 1, 2 on. (Pins 4, 12 high or
open)
50
5.0
75
10
120
%
ms
LOAD FAULT RECOVERY
Same as Turn On Characteristics.
LINE REJECTION
MIL-STD-461, CS101, 30Hz to 50KHz
Note 1
60
70
dB