AXC-102
ACTIVE FILTER FOR RIPPLE ATTENUATION 20A
PRELIMINARY
Features :
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High Efficiency.
Superior Performance at Low Frequencies.
Output Impedance Less Than 5mΩ.
Retriggerable / Non-retriggerable Circuit Breaker.
Shut Down.
Sense Input Control.
Status Output.
Wide Operation Range 0-28V.
Programmable Voltage Drop.
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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
5mΩ 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
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Laboratory Power Supply.
Mixed Signal Power Splitter.
Automotive Power Filter.
Professional Audio Systems.
Power Management.
Fig.1 - Typical Application
+2.5V
(OPTION) Bias
Voltage
NC
1
VD
7
PIN
SD
8
NC
NC
NC
9
4
3
VEXT RTG CBS
10
6
C2
470uF
Load
Vo=0V - 28V
+OUT
+S
C1
10uF
AXC102
RET
5
POUT
SNS
CL
2
NC
Lab. P.S.
-S
-OUT
Ultra Low Noise, Lab. Power Supply
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
AXC-102
PRELIMINARY
Absolute Maximum Ratings
Parameter
Supply Voltage
Maximum Output Current
SD Current
SD Voltage
CL Current
CL Voltage
VEXT Current
VEXT Voltage
CBS,RTG Current
CBS,RTG Voltage
VD Current
VD Voltage
SNS Current
SNS Voltage
Storage Temperature
Operating Temperature
Less than 100uSec
Conditions
Min
0
0
0
-2
-1
-10
-15
2.3
-10
PIN-1
POUT-1
-30
-30
Max
30
100
10
5
1
10
25
2.7
1
30
1
PIN+1
10
POUT+1
110
85
Units
Vdc
A
mA
V
mA
V
mA
V
mA
V
mA
V
mA
V
°C
°C
DC Electrical Specification (-30°C
≤
T
A
≤
+85°C)
Parameter
Operating Voltage
Operation Current
Quiescent Current
VEXT Voltage
VEXT Current
Voltage Drop
Conditions
VEXT not connected
VEXT connected to external 2.5V
Normal Operation
Shut Down Mode
2.50<VEXT<2.60V
No Load
Full Load
R1* Not Connected
Min
4
0
0
Typ
Max
28
28
20
26
2.25
2.6
26
0.62
0.68
0.62
1
2.5
100
2.5
1
20
20
22
5
Units
V
V
A
mA
mA
V
mA
V
V
V
V
mA
mSec
V
V
uA
uA
A
A
22
2.5
10
0
0.2
0.60
0
2
50
1.5
0
SD OFF Position Voltage
SD OFF Position Current
Retriggerable Time
CBS Output Voltage ON Position
CBS Output Voltage Off Position
CBS Output Current ON Position
CBS Output Current Off Position
Circuit Breaker Off Current
RTG Not Connected
R1* Not Connected
R1*=0
20
4
* R1 See Fig.2
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
AXC-102
PRELIMINARY
AC Electrical Specification (-30°C
≤
T
A
≤
+85°C)
Operating Voltage 4-28
V ; Output Current I
LOAD
=(0÷
20)A
Parameter
Insertion Loss
Attenuation*
Output Impedance
Line Transient Attenuation
Transient Output Impedance
Conditions
20Hz
÷
10KHz @ 50Ω
At 1Khz
10Hz-10Khz
10Hz
÷ 10KHz
Transient voltage less than 0.5V
R2** does not exist
Idc=2A;
∆I=5A
Min
40
55
27
26
Typ
50
61
30
4
30
Max
60
Units
dB
dB
dB
mΩ
dB
mΩ
6
6
*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:
I
CIRCUIT
BREAKER
[
A
]
=
External
Bias
I
EXT
V
VROP
V
EXT
A
V
SW
2
V
CBS
720
+
240
R
*
1
[
K
Ω
]
±
10%
150
+
11
R
*
1
[
K
Ω
]
V
R
2
1
VD
PIN
SD
8
V
10
6
C
2
470uF
V
OUT
I
LOAD
V
CL
9
4
3
VEXT RTG CBS
POUT
7
AXC102
SNS
RET
5
CL
2
Vripple
V
IN
C
1
10uF
Voltage Drop Setting:
V
DROP
[
V
]
=
1.2
R
*
2
[
K
Ω
]
±
5%
100
+
2
R
*
2
[
K
Ω
]
+
V
-
Vdc
V
SD
I
SD
I
CL
V
SW
1
A
R
1
A
V
V
A
*R1,R2 See Fig2.
Fig.3 - Circuit Breaker Current Setting
25
20
0.6
0.5
Fig.4 - Voltage Drop Setting
I
circuit breaker[A]
0.4
Vdrop[V]
15
10
5
0
0.3
0.2
0.1
0
1
10
100
1000
1
10
100
1000
R
1
[KΩ ]
R
2
[KΩ ]
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
AXC-102
PRELIMINARY
Load Transient Response
Fig.5A
Fig.5B
Thermal Resistance
Parameter
Junction-to-Sink [
R
θ
JS
]
Attenuation (Vout[ac]/Vripple)
Typ
1.4
Max
1.6
Units
°
C/W
General Specifications
Parameter
Weight
34±2
Units
gr.
Fig.6
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
AXC-102
PRELIMINARY
Pin Description
No
Name
Short Description
No
Name
Short Description
Fig.8 –
Mechanical Drawing
28
2
1
2
3
4
5
VD
CL
CBS
RTG
RET
Voltage Drop
Current Limit
Circuit
Breaker Status
Retriggerable
Mode
Ground
7
89
6
7
8
9
10
SNS
PIN
SD
VEXT
POUT
10
Sense Input
Positive Input
Shut Down
External Bias
Positive Output
13.5 11.8
1
35 (35x26
DCB Ceramic)
48
6.9
2
11
31.6
10.13
6 5
4 3
2 1
16.8
10.87 10.87
2.54 2.54
63
2.54
16.8
Fig.7
Typical Applications
Optional
NC
NC
1
9
4
3
VD VEXT RTG CBS
7
PIN
SD
8
Car
Battery
C
1
100uF
L1
100uHy
AXC102
RET
5
POUT
SNS
CL
2
NC
10
6
Optional
Shut
Down
C
2
500uF
Load
Fig.9A - Input Power Filter For Sensitive Vehicle Electronic Equipment
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
4
5.3
10.06
0.5
45°
44
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