Technical Reference Notes
AIF12W300 DC-DC Series
AIF12W300, 600W, DC-DC Converter Module
The single output AIF is an isolated, single output DC to DC converter module, providing up to 600W output with a maximum
baseplate operating temperature of 100°C with no derating. The AIF features full safety isolated low voltage secondary side
control and Astec Linear Programming (ALP™) or through I
2
C bus for convenient adjustment of the module's parameters.
Electrical Parameters
Input
Input range
Input Surge
Efficiency
Output
Regulation
Noise / Ripple
Control
Voltage Adjust
Enable
Current Limit Adjust
Over Voltage
Protection Adjust
250 - 420 VDC
500V / 100ms
91.8% (Typical
)
0.2% typical down to no load
480mV typical
80 to 120%
TTL compatible
(positive & negative enable
options)
20% to 100%
110% to 150% V
O
Special Features
•
•
•
•
•
•
•
•
•
600W continuous power at 100°C baseplate
temperature
108W/in
3
(6.6W/cm
3
)
High efficiency – 91.8% typical
Low output ripple and noise
Positive and Negative Enable function
Excellent transient response
OVP, OCP, V Adj control with ALP
TM
analog
mode linear control, or through I
2
C bus for
digital mode control.
Paralleable with accurate current sharing
Switching Frequency 400KHz
Safety
UL, cUL
TUV
60950 Recognized
EN60950 Licensed
Environmental Specifications
-20°C to 100°C Operating Baseplate Temperature
-55°C to 125°C Storage Temperature
MTBF > 0.3Mhours
Pb-free reflow compatible and ROHS Compliant
MODEL: AIF12W300 SERIES
JUNE 2006
SHEET 1 OF 37
Technical Reference Notes
AIF12W300 DC-DC Series
Electrical Specifications
STANDARD TEST CONDITION
on a single unit, unless otherwise indicated, electrical specifications apply over all
operating input voltage and temperature conditions.
T
amb
V
in
Enable
CLK IN
CLK OUT
CSHARE
I
out
AUX OUTPUT
-Sense
V ADJ
C MON
TEMP MON
C LIM ADJ
OVP ADJ
PG/ID
I/P Cap requirement
ABSOLUTE MAXIMUM RATINGS
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress
ratings only. Functional operation of the device is not implied at these or any other conditions in excess of those given in the
operational sections of the IPS. Exposure to absolute maximum ratings for extended periods can adversely affect device
reliability.
Parameter
Input Voltage:
Continuous:
Transient (100ms)
Operating Baseplate Temperature
Start up Baseplate Temperature
Storage Temperature
Operating Humidity
I/O Isolation
Symbol
V
I, trans
Tc
-
T
STG
-
-
V
I
Min
250
-20
-40
-55
15
2700
Typ
-
-
-
-
-
-
-
Max
420
500
100
100
125
95
-
Unit
V
dc
V
dc
°C
°C
°C
%
V
dc
25°C
300 V± 2%
Open
Open
Open
Open
75%
I
o max
±
2%
Open
connect to –Vout
Open
Open
Open
Open
Open
Open
68µF/450V
min.
MODEL: AIF12W300 SERIES
JUNE 2006
SHEET 2 OF 37
Technical Reference Notes
AIF12W300 DC-DC Series
INPUT SPECIFICATIONS
Parameter
Operating Input Voltage
Undervoltage Threshold
(I
O
= 10% I
O max
)
Turn-on point
Turn-off point
Symbol
V
I
Min
250
Typ
300
Max
420
Unit
V
dc
Input Current
1
(V
I
= V
I min
, I
O
= I
O max
,
V
O
= V
O nom
)
(V
I
= 0 to V
I max
, I
O
= I
O max
,
V
O
= V
O nom
)
Input Reflected Ripple Current
2
(5Hz to 20MHz: 12µH source
impedance: T
amb
= 25°C)
Inrush Transient
3
Break Regulation
CLK IN
Frequency
Voltage Level
(internal ac coupled)
Enable
Positive Logic
Low Logic - Module Off
High Logic - Module On
(Enable pin opened)
Enable Low Sourced Current
(V
enable
= 0.7V)
Turn-On Delay
No load input power
Turn-On Time
(I
O
= I
O max
; V
O
within 1%)
(No external O/P capacitance)
Input Capacitance
-
-
I
I max
I
I max
I
I
I
2
t
-
-
-
205
175
-
-
-
-
-
-
-
30
245
215
2.8
3.4
-
V
V
A
A
mA
pk-pk
A
2
s
V
kHz
V
pk-pk
-
-
720
3.3
-
215
800
-
2.8
245
880
5.5
V
enable
V
enable
-
-
-
-
-
0
2
-
-
-
-
-
-
-
-
-
-
-
0.6
0.7
10
150
380
5
650
0.8
V
V
µA
mS
W
mS
µF
MODEL: AIF12W300 SERIES
JUNE 2006
SHEET 3 OF 37
Technical Reference Notes
AIF12W300 DC-DC Series
OUTPUT SPECIFICATIONS
Parameter
Output Voltage Setpoint
(V
I min
to V
I max
:
I
O
= I
O max
; T
amb
= 25°C )
Output Regulation:
Line
Load
Output Voltage Adjust
4, 5
V
adj
= 0V
V
adj
= 2V
Output Ripple and Noise
Peak-to-Peak (5 Hz to 20MHz)
External Load Capacitance
Switching Frequency
Output Power
Efficiency
(V
I
= V
I nom
, I
O
= I
O max
, T
amb
= 25
°
C)
Output Current
Output Current-limit Inception (Hiccup)
(V
O
= 97% V
O set nom
)
Output Current Limit Adjust
5
Output Current Monitor
I
mon
at I
O max
Monitored I
O
Range
I
mon
Compliance Voltage
Current Share Accuracy
6
(Cshare connected together,
I
O
≥
80%I
O
max)
No. of Parallel Unit
Over Current Protection Level
(V
O
dropped to 97% of V
O nom
)
Over Voltage Protection Level
Over Voltage Protection Adjust
5
Over Temperature Protection Trip Point
(Baseplate temperature)
Internal Temperature Monitor
Temperature Coefficient
Source Impedance
Temperature Coefficient
(T
C
= -40°C to 100°C)
Symbol
V
O set
Min
47.52
Typ
48
Max
48.48
Unit
V
-
-
-
-
-
-
-
P
O
-
I
O
I
O
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
78
118
-
-
360
-
90
0
105
20
0.9
20
-
-
-
105
120
120
105
9.8
-
-
-
-
80
120
110
-
400
-
91.8
-
-
-
1.0
-
-
±
3
-
110
125
-
-
10.0
1.0
-
0.2
0.2
82
122
480
2000
440
600
-
12.5
120
100
1.1
100
5.0
±
5
10
115
130
150
120
10.2
-
0.02
%
%
%V
O
%V
O
mV
pk-pk
µF
kHz
W
%
A
%I
O
%I
O
max
max
mA
%I
O max
V
%I
avg
pcs
%I
O max
%V
O
%V
O
°C
mV/°C
kΩ
%V
O
/°C
MODEL: AIF12W300 SERIES
JUNE 2006
SHEET 4 OF 37
Technical Reference Notes
AIF12W300 DC-DC Series
OUTPUT SPECIFICATIONS
(continued)
Parameter
Step-load Excursion
(25% to 75% load change @ 1A/µS,
recovery to 1%V
O
; V
I
= V
I nom
;
T
amb
= 25°C)
Output Overshoot
Output Undershoot
Step Load Response
(25% to 75% load change @ 1A/µS,
recovery to 1%V
O
; V
I
= V
I nom
;
T
amb
= 25°C; measure from end of
transition)
Turn-on Output Voltage Overshoot
(I
O
= I
O max
; T
amb
= 25°C;
no external O/P capacitor)
Short Circuit Current
(Hiccup Mode)
CLK OUT
Frequency
Voltage Level (internal ac coupled)
No. of Fan Out Unit
Turn-Off Negative Voltage
(resistive loading, wire length of
10cm)
AUX Output Voltage
AUX Output Current
7
AUX Output Voltage Ripple and Noise
Power Good Monitor / Identification
PG/ID Low
(Power Fault, I
sink
≤
10mA)
PG/ID Internal Pull-up
Resistance to V
O
Symbol
Min
Typ
Max
Unit
-
-
-
-
-
-
-
-
-
2.4
2.4
250
V
V
µS
-
-
-
-
-
-
-
-
-
-
-
-
-
720
3.3
-
-
10.5
-
-
-
46
3
-
800
-
-
-
12
-
-
-
47
5
150
880
5.5
2
-0.7
13.5
10
600
0.2
48
%V
O
%I
O
max
kHz
V
pk-pk
pcs
V
V
mA
mV
V
kΩ
Notes: 1. An input line fuse is recommended for use (e.g. Littelfuse type, 10A 250V FB).
2. External input capacitance required. See Figure 1 for the Input Reflected-Ripple Current Test Setup.
Measure input reflected-ripple current with a simulated source inductance of 12µH.
3. See Figure 2 for the Inrush Current Test Setup. Measure input inrush current with a simulated source
inductance of 12µH and input bulk capacitor of 68µF/450Vmin must always be added.
4. The combination of remote sense and trim do not exceed a total of 0.5V.
5. Refer to Basic Operation and Features section.
6. See Figure 3 for modules in parallel connection.
7. The AUX output pin does not allow for any short circuit and OCP testing.
MODEL: AIF12W300 SERIES
JUNE 2006
SHEET 5 OF 37
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