Cypress PowerSoC CY3267 Skrócona instrukcja obsługi - Strona 10
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6. Safety Precautions
General Safety Precautions
6.1. Keep your work area clean. Ensure that there are no loose wires or metal pieces
lying on the table or nearby high-power circuits.
6.2. Always wear safety glasses when working with circuits at high power or high volt-
age.
6.3. Use rubber floor mats to insulate you from ground.
6.4. Be aware of bracelets, rings, metal watch bands and loose necklace/pendants
that you may be wearing. They conduct electricity and can cause burns. Do not
wear them near an energized circuit.
6.5. Be aware of the locations of fire extinguishers and first aid kits in the lab and
around your work area.
6.6. Use only isolated power supplies (either isolated or AC power through isolation
power transformers).
6.7. Before applying power to your circuit, verify that all connections are correct as
per the board schematic. Ensure that there are no shorts or ground loops that
may lead to electrical shocks or damage the test equipment.
Precautions when working with PowerPSoC based high-power
circuits
6.8. When building your own system with the CY3267 for the first time, begin with low
current settings (preferably 50mA). Set the DAC thresholds in the PowerPSoC's
hysteretic controller accordingly. Once the system functions as desired at this
current setting, increase the hysteretic controller's DAC thresholds in steady
increments to the final value. At each increment, verify that the components on
the board are not excessively hot.
6.9. Ensure that the high-side DAC reference and the low-side DAC reference differ
by a count of at least four. For example, if the low-side DAC reference is set to 85
(decimal representation), the high-side DAC reference should be set to at least
89.
6.10. Follow the FET Turn-On sequence suggested in the example project. Altering
this sequence may damage the PowerPSoC's internal FETs.
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