Texas Instruments TPS7A78EVM-011, Руководство пользователя

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AC Line
AC Neutral
TPS7A78EVM-011
J1
Regular Scope
Probe or
High-Voltage
Differential
Scope Probes
Device GND can be floating or tied to Earth GND when Half-Bridge
configuration is used.
Device GND
LDO_OUT
Earth GND
TP8 TP10 TP9
Load
J2
J3
R5
Fuse Cap-Drop
TPS7A78
AC+
AC-
GND
TVS
x
x
Earth GND
CH.x
R7
J5
Half-Bridge Configuration, jumper J3 is shorted
Default EVM setting
xx
Line
Neutral
AC Power Supply
Oscilloscope
Equipment Connection and Operation
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10 SBVU048 – March 2019
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TPS7A78EVM-011 Evaluation module
6.1.2 Half-Bridge (HB) Test Equipment Connection
Figure 8 shows an HB connection diagram.
Figure 8. Proper Test Equipment Connections for the Half-Bridge (HB) EVM Configuration
To ensure proper connectivity:
1. Set the AC input power supply to 120 V
AC
and 60 Hz, and turn the power supply off.
2. Connect the line lead from the AC power supply to the line pin on the J1 connector of the EVM.
3. Connect the neutral lead from the AC power supply to the neutral pin on the J1 connector of the EVM.
4. Connect a 0-mA to 27-mA load between J2 connecter terminals of the EVM.
6.2 Equipment Operation
Operate the test equipment using the following steps:
1. Turn on the AC power supply.
2. Vary the respective load and input voltage, as necessary, for test purposes.