Texas Instruments AMC1301EVM, User Manual

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VDD2
DGND
1
2
J3
10µF
C11
VDD2
VDD1
5Viso
VDD2 VDD2
1
2
J2
DGND
4.7µF
C1
22µF
C2
DGND
22µF
C6
1
2
J3
10µF
C11
isoGND
isoGND isoGND
isoGND
isoGND
1µF C10
0.1µF
C3
D1
D2
1
2
3
JP1
D1
1
VCC
2
D2
3
GND
4
GND
5
U3
SN6501DBV
4
2
3
1 5
6
7
8
T1
DA2303-ALB
IN
1
GND
2
EN
3
NC
4
OUT
5
U1
TPS76350DBV
VOUT+
VOUT
-
J4
1
2
7
6
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Analog Interface
3 SBAU256 – May 2016
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AMC1301 Evaluation Module
2.2 Analog Outputs
The analog outputs from the AMC1301EVM board are fully-differential signals centered at VDD2 / 2. The
outputs are available on the two screw terminals of J4, as
Figure 2 shows.
Figure 2. AMC1301EVM Schematic: Analog Output Section
3 Power Supplies
The AMC1301 requires two separate power rails, VDD1 and VDD2. VDD1 is on the high voltage side of
the amplifier. VDD2 is on the user side of the amplifier.
3.1 VDD1 Input
J2 provides access to the to the VDD1 supply. For power provided from high-side isolated rails (such as
from a gate-drive supply), move the shunt on jumper JP1 to cover pins 1 and 2. Use a voltage between
4.5 VDC and 5.5 VDC for the user-applied VDD1 supply. In the EVM default configuration, VDD1 is
provided from VDD2 by means of an isolation transformer and U3, an SN6501 transformer driver. In the
default configuration, apply 5 V to VDD2 through J3. The input power is shown in
Figure 3 .
Figure 3. VDD1 Input
3.2 VDD2 Input
The user side of the AMC1301 isolation amplifier is rated for 2.7 V
DC
to 5.5 V
DC
and is applied to the
amplifier using J3. Figure 4 illustrates the power input for VDD2.
Figure 4. VDD2 Input Connector