AXC-102
ACTIVE FILTER FOR RIPPLE ATTENUATION 20A
PRELIMINARY
September 98
Page 1 of 6
98002-05-003-02.doc
IXYS Corporation 3540 Bassett Street, Santa Clara, CA 95054 TEL:408-982-0700 FAX:408-496-0670
IXYS Semiconductor, GmbH. Edisonstr. 15 D-68623 Lampertheim, Germany TEL:+49-6206-503-0 FAX:+49-6206-503-627
Features :
?
High Efficiency.
?
Superior Performance at Low Frequencies.
?
Output Impedance Less Than 5m
.
?
Retriggerable / Non-retriggerable Circuit Breaker.
?
Shut Down.
?
Sense Input Control.
?
Status Output.
?
Wide Operation Range 0-28V.
?
Programmable Voltage Drop.
?
Compact Size.
Product Description
The AXC-102 is a power filter which provide high attenuation starting at extremely low frequencies
(30dB@20Hz). The device is designed for positive supply of 0 to 28 Volts and up to 20Amp load. The
output voltage tracks the DC input voltage with 0.6V drop (adjustable). Full performance is kept for input
ripple of up to 0.8 Volts p-p. Exceptional effort has been made to maintain low output impedance (less than
5m
at audio frequencies). The AXC filters are designed to meet the most stringent noise requirements in
electronic equipment, laboratory power supplies, audio equipment, etc. Sense input provides a constant DC
voltage drop across the AXC102. A programmable current circuit breaker shuts down the device when the
current trough the module exceeds the rated current (programmable). The circuit breaker has two modes of
operation: Retriggerable and Non-retriggerable mode. A CBS (Circuit Breaker Status) indicates when the
device is in disconnected mode. A low level voltage (less than 1V), at SD (Shut Down) input, shuts down
the output voltage and the quiescent current drops below 2.5mA. This feature fits power management, as
well as battery power saving applications.
Applications
Fig.1 - Typical Application
?
Laboratory Power Supply.
?
Mixed Signal Power Splitter.
?
Automotive Power Filter.
?
Professional Audio Systems.
?
Power Management.
AXC102
POUT
RET
PIN
7
10
5
SD
8
CL
2
VEXT
9
VD
1
CBS
3
RTG
4
SNS
6
+2.5V
Bias
Voltage
Load
470uF
10uF
Lab. P.S.
+OUT
+S
-S
-OUT
(OPTION)
Vo=0V - 28V
C1
C2
NC
NC
NC
NC
NC
Ultra Low Noise, Lab. Power Supply
AXC-102
PRELIMINARY
September 98
Page 2 of 6
98002-05-003-02.doc
IXYS Corporation 3540 Bassett Street, Santa Clara, CA 95054 TEL:408-982-0700 FAX:408-496-0670
IXYS Semiconductor, GmbH. Edisonstr. 15 D-68623 Lampertheim, Germany TEL:+49-6206-503-0 FAX:+49-6206-503-627
Absolute Maximum Ratings
Parameter
Conditions
Min
Max
Units
Supply Voltage
0
30
Vdc
Maximum Output Current
Less than 100uSec
0
100
A
SD Current
0
10
mA
SD Voltage
-2
5
V
CL Current
-1
1
mA
CL Voltage
-10
10
V
VEXT Current
-15
25
mA
VEXT Voltage
2.3
2.7
V
CBS,RTG Current
1
mA
CBS,RTG Voltage
-10
30
V
VD Current
1
mA
VD Voltage
PIN-1
PIN+1
V
SNS Current
10
mA
SNS Voltage
POUT-1
POUT+1
V
Storage Temperature
-30
110
C
Operating Temperature
-30
85
C
DC Electrical Specification (-30C
T
A
+85C)
Parameter
Conditions
Min
Typ
Max
Units
Operating Voltage
VEXT not connected
4
28
V
VEXT connected to external 2.5V
0
28
V
Operation Current
0
20
A
Quiescent Current
Normal Operation
22
26
mA
Shut Down Mode
2.25
mA
VEXT Voltage
2.5
2.6
V
VEXT Current
2.50<VEXT<2.60V
10
26
mA
Voltage Drop
No Load
0
0.62
V
Full Load
0.2
0.68
V
R1* Not Connected
0.60
0.62
V
SD OFF Position Voltage
0
1
V
SD OFF Position Current
2
2.5
mA
Retriggerable Time
RTG Not Connected
50
100
mSec
CBS Output Voltage ON Position
1.5
2.5
V
CBS Output Voltage Off Position
0
1
V
CBS Output Current ON Position
20
uA
CBS Output Current Off Position
20
uA
Circuit Breaker Off Current
R1* Not Connected
20
22
A
R1*=0
4
5
A
* R1 See Fig.2
AXC-102
PRELIMINARY
September 98
Page 3 of 6
98002-05-003-02.doc
IXYS Corporation 3540 Bassett Street, Santa Clara, CA 95054 TEL:408-982-0700 FAX:408-496-0670
IXYS Semiconductor, GmbH. Edisonstr. 15 D-68623 Lampertheim, Germany TEL:+49-6206-503-0 FAX:+49-6206-503-627
AC Electrical Specification (-30C
T
A
+85C)
Operating Voltage 4-28
V ; Output Current I
LOAD
=(0
20
)A
Parameter
Conditions
Min
Typ
Max
Units
Insertion Loss
20Hz
10KHz @ 50
40
50
60
dB
Attenuation*
At 1Khz
55
61
dB
10Hz-10Khz
27
30
dB
Output Impedance
10Hz
10
KHz
4
6
m
Line Transient Attenuation
Transient voltage less than 0.5V
R2** does not exist
26
30
dB
Transient Output Impedance
Idc=2A;
I=5A
6
m
*C1 = 10uF ,C2=470uF Electrolytic Capacitor ,R2 not exist; Maximum Input Noise Level = 0.8Vptp
** See Fig2.
Fig.2 - Test Circuit
Circuit Breaker Current Setting:
%
10
]
[
*
11
150
]
[
*
240
720
]
[
1
1
BREAKER
CIRCUIT
+
+
=
K
R
K
R
A
I
Voltage Drop Setting:
%
5
]
[
*
2
100
]
[
*
2
.
1
]
[
2
2
+
=
K
R
K
R
V
V
DROP
*R1,R2 See Fig2.
SW
1
R
1
C
2
470uF
C
1
10uF
A
V
V
V
A
V
IN
I
LOAD
V
OUT
I
SD
V
SD
+
-
V
A
AXC102
POUT
RET
PIN
7
10
5
SD
8
CL
2
VEXT
9
VD
1
CBS
3
RTG
4
SNS
6
V
A
V
V
I
CL
V
CL
V
CBS
I
EXT
V
EXT
External
Bias
R
2
V
VROP
SW
2
Vripple
Vdc
Fig.3 - Circuit Breaker Current Setting
Fig.4 - Voltage Drop Setting
0
5
10
15
20
25
1
10
100
1000
I
circuit breaker[A]
R
1
[K
]
0
0.1
0.2
0.3
0.4
0.5
0.6
1
10
100
1000
Vdrop[V]
R
2
[K
]
AXC-102
PRELIMINARY
September 98
Page 4 of 6
98002-05-003-02.doc
IXYS Corporation 3540 Bassett Street, Santa Clara, CA 95054 TEL:408-982-0700 FAX:408-496-0670
IXYS Semiconductor, GmbH. Edisonstr. 15 D-68623 Lampertheim, Germany TEL:+49-6206-503-0 FAX:+49-6206-503-627
Load Transient Response
Fig.5A
Fig.5B
Thermal Resistance
Attenuation (Vout[ac]/Vripple)
Parameter
Typ
Max
Units
Junction-to-Sink [
JS
R
]
1.4
1.6
C/W
General Specifications
Parameter
Units
Weight
34
2
gr.
Fig.6
AXC-102
PRELIMINARY
September 98
Page 5 of 6
98002-05-003-02.doc
IXYS Corporation 3540 Bassett Street, Santa Clara, CA 95054 TEL:408-982-0700 FAX:408-496-0670
IXYS Semiconductor, GmbH. Edisonstr. 15 D-68623 Lampertheim, Germany TEL:+49-6206-503-0 FAX:+49-6206-503-627
Pin Description
Fig.8
Mechanical Drawing
No
Name
Short Description
No
Name
Short Description
1
VD
Voltage Drop
6
SNS
Sense Input
2
CL
Current Limit
7
PIN
Positive Input
3
CBS
Circuit
Breaker Status
8
SD
Shut Down
4
RTG
Retriggerable
Mode
9
VEXT
External Bias
5
RET
Ground
10
POUT
Positive Output
6 5
4 3
2 1
7
8 9
10
Fig.7
10.13
10.06
4
0.5
5.3
6.9
2
13.5
63
48
35 (35x26
DCB Ceramic)
45
28
2
1
44
11.8
10.87
16.8
10.87
16.8
2.54 2.54 2.54
31.6
11
Typical Applications
AXC102
POUT
RET
PIN
7
10
5
SD
8
CL
2
VEXT
9
VD
1
CBS
3
RTG
4
SNS
6
Load
C
2
500uF
C
1
100uF
Optional
Optional
Shut
Down
L1
100uHy
Car
Battery
NC
NC
NC
Fig.9A - Input Power Filter For Sensitive Vehicle Electronic Equipment
AXC-102
PRELIMINARY
September 98
Page 6 of 6
98002-05-003-02.doc
IXYS Corporation 3540 Bassett Street, Santa Clara, CA 95054 TEL:408-982-0700 FAX:408-496-0670
IXYS Semiconductor, GmbH. Edisonstr. 15 D-68623 Lampertheim, Germany TEL:+49-6206-503-0 FAX:+49-6206-503-627
Typical Applications
AXC102
POUT
RET
PIN
7
10
5
SD
8
CL
2
VEXT
9
VD
1
CBS
3
RTG
4
SNS
6
+2.5V
Bias
Voltage
Load
470uF
10uF
(OPTION)
Vo=0V - 28V
C1
C2
Lab. P.S.
+OUT
+S
-S
-OUT
NC
NC
NC
NC
NC
Fig.9B Ultra Low Noise, High Efficiency Laboratory Switch-Mode Power Supply
S.M.P.S
AXC102
POUT
RET
PIN
7
10
5
SD
8
CL
2
VEXT
9
VD
1
CBS
3
RTG
4
SNS
6
Analog
Load
C
2
500uF
C
1
10uF
+OUT
+S
-S
-OUT
Digital
Load
Optional
Optional
Shut
Down
NC
NC
NC
Fig.9C - Analog Digital Power Supply Decoupler (Sensitive Analog Load).
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