SI82XX-KIT Silicon Laboratories Inc, SI82XX-KIT Datasheet - Page 5

• Manufacturer Part Number: SI82XX-KIT
• Description: KIT DEV FOR SI82XX ISOLATORS
• Manufacturer: Silicon Laboratories Inc
• Series: -r

Specifications of SI82XX-KIT

• Main Purpose: Interface, ISOdriver
• Embedded: No
• Utilized Ic / Part: Si8220, Si8233, Si8234, Si8235
• Primary Attributes: 4 Individual Circuits
• Secondary Attributes: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-2148; SI82XX-KIT

S i8 2x x -E V B U G
3.1. Si82xx ISOdriver Board Test
Figure 3 illustrates the Si8234 with VDDI powered from 5 V and VDDA and VDDB powered from 15 V. A 10 kHz
signal is applied to the Si8234's PWM input. As shown, the Si8234 transmits a 10 kHz signal to VOA and VOB
(Channel 3 illustrates VOA output, and Channel 2 illustrates VOB output). Note that VOA and VOB are 180° out of
phase, as would be expected of a PWM driver. In this setup, no drive-trane was connected to the outputs (VOA and
VOB) of the Si8234. Nevertheless, the potentiometer, R35, can be adjusted to dynamically change the dead-time
of the Si8234 if desired. Duplicating this setup is an excellent test to become familiar with the evaluation board. To
repeat this test, perform the following steps:
1. Install a shunting jumper to J12 (Position 1, 2).
2. Install a shunting jumper to J14.
3. Install a shunting jumper to J11.
4. Install a shunting jumper to J13.
5. Connect a 5 Vp-p square wave to P7.
6. Connect a 5 V (100 mA) supply to P9.
7. Connect a 15 V (100 mA) supply to P14.
8. Connect a 15 V (100 mA) supply to P15.
9. Connect a scope probe to TP9 to view VOA.
10.Connect a scope probe to TP11 to view VOB.
Figure 3. Si8234 PWM Outputs
Rev. 0.1
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