AFL28XXS Series
Static Characteristics (Continued)
Group A
Parameter
INPUT CURRENT
Subgroups
Test Conditions
= 28 Volts
Min
Nom
Max
Unit
V
IN
1
2, 3
1, 2, 3
1, 2, 3
80
100
5.0
50
No Load
I
= 0
OUT
mA
Inhibit 1
Inhibit 2
Pin 4 Shorted to Pin 2
Pin 12 Shorted to Pin 8
INPUT RIPPLE CURRENT
AFL2805S
V
= 28 Volts, 100% Load, BW = 10MHz
IN
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
60
60
60
60
60
60
60
AFL2807S
AFL2808S
AFL2809S
AFL2812S
AFL2815S
AFL2828S
mA
pp
CURRENT LIMIT POINT
V
= 90% V , V = 28 Volts
NOM IN
OUT
As a percentage of full rated load
Note 5
1
2
3
115
105
125
125
115
140
%
LOAD FAULT POWER DISSIPATION
VIN = 28 Volts
1, 2, 3
33
W
%
Overload or Short Circuit
EFFICIENCY
AFL2805S
AFL2807S
AFL2808S
AFL2809S
AFL2812S
AFL2815S
AFL2828S
VIN = 28 Volts, 100% Load
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
78
79
79
80
80
81
81
81
82
82
83
84
85
84
ENABLE INPUTS
(Inhibit Function)
Converter Off
Sink Current
Converter On
Sink Current
1, 2, 3
1, 2, 3
Logical Low on Pin 4 or Pin 12
Note 1
Logical High on Pin 4 and Pin 12 - Note 9
Note 1
-0.5
2.0
0.8
100
50
V
µA
V
100
µ
A
SWITCHING FREQUENCY
1, 2, 3
500
550
600
KHz
SYNCHRONIZATION INPUT
Frequency Range
1, 2, 3
1, 2, 3
1, 2, 3
500
2.0
-0.5
700
10
0.8
100
80
KHz
V
V
ns
%
Pulse Amplitude, Hi
Pulse Amplitude, Lo
Pulse Rise Time
Note 1
Note 1
20
Pulse Duty Cycle
ISOLATION
1
Input to Output or Any Pin to Case
(except Pin 3). Test @ 500VDC
100
MΩ
DEVICE WEIGHT
MTBF
Slight Variations with Case Style
85
g
MIL-HDBK-217F, AIF @ T = 70°C
300
KHrs
C
For Notes to Specifications, refer to page 4
www.irf.com
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