Silicon Laboratories Si827 Series, Руководство пользователя

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2. Si827x ISOdriver Board Setup and Demo Test
2.1 EVB Demo/Test
To run the demo, follow the instructions below. Refer to Figure 3.1 Si827x Evaluation Board Primary Silkscreen on page 6 and
Figure 3.2 7 on page 7 as necessary.
2.2 DC Supply Configuration
1. Set one supply to output 5 VDC.
2. Turn OFF the supply and connect the positive lead to VDDI (J1 pin1 or TP1).
3. Connect the negative lead to GNDI (J1 pin 2 or TP2).
4. Turn ON the dc power supply.
5. Ensure that the current draw is less than 25 mA. If it is larger, this indicates that either the board or Si827x has been damaged or
the supply is connected backwards.
6. Set the other supply to output 15 VDC.
7. Turn OFF the supply and connect the positive lead to VDDA (J2 pin 3 or TP3).
8. Connect the negative lead to VSSA (J2 pin 1 or TP15).
9. Turn ON the supply.
10. Ensure that the current draw is less than 100 mA. If it is larger, this indicates that either the board or Si827x has been damaged or
the supply is connected backwards.
2.3 Function Generator
1. Turn ON the function generator with the output disabled.
2. Adjust its output to provide a 500 kHz, 0 to 5 V peak square wave (50 percent duty cycle) to its output.
3. Connect the output of the generator to VIA/PWM (JP1 pin2).
4. If this is a board with VIB, apply a jumper to JP2 between pins 2 and 3.
5. Make sure jumper JP3 has a shunt between pins 1 and 2 to enable the device.
6. Enable the output of the waveform generator.
UG186: Si827x-EVB User's Guide
Si827x ISOdriver Board Setup and Demo Test
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