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AFL270XXD Series
Dynamic Characteristics -55°C < T
CASE < +125°C, VIN=270V 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 millisecond.
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. Load current split equally between +Vout and -Vout.
11. Output load must be distributed so that a minimum of 20% of the total output power is being provided by one of
the outputs.
12. Cross regulation measured with load on tested output at 20% of maximum load while changing the load on
other output from 20% to 80%.
Parameter
Group A
Subgroups
Test Conditions
Min
Nom
Max
Unit
LOAD TRANSIENT RESPONSE
AFL27005D
Amplitude
Either Output
Recovery
Amplitude
Recovery
AFL27012D
Amplitude
Either Output
Recovery
Amplitude
Recovery
AFL27015D
Amplitude
Either Output
Recovery
Amplitude
Recovery
4, 5, 6
Note 2, 8
Load Step 50%
100%
Load Step 10%
50%
10%
50%
50%
10%
Load Step 50%
100%
Load Step 10%
50%
10%
50%
50%
10%
Load Step 50%
100%
Load Step 10%
50%
10%
50%
50%
10%
-450
-750
450
200
450
200
400
750
200
750
200
400
750
200
750
200
400
mV
s
mV
s
mV
s
mV
s
mV
s
mV
s
LINE TRANSIENT RESPONSE
Amplitude
Recovery
Note 1, 2, 3
VIN Step = 160 400 Volts
-500
500
mV
s
TURN-ON CHARACTERISTICS
Overshoot
Delay
4, 5, 6
VIN = 160, 270, 400 Volts. Note 4
Enable 1, 2 on. (Pins 4, 12 high or
open)
50
75
250
120
mV
ms
LOAD FAULT RECOVERY
Same as Turn On Characteristics.
LINE REJECTION
MIL-STD-461D, CS101, 30Hz to
50KHz
Note 1
60
70
dB