Team,
Using the device per Figure 9 from the datasheet (Basic Optocoupler Application). C_STC = 150uF, R_RIDD = 20kR.
In the datasheet, the example with Figure 6. (Basic Application Circuit With Support Capacitor C_STC > 50uF) adds a P-FET, BSS84 type, parallel between pin 3 and C_STC.
A few questions:
- What’s the function of BSS84 here?
- In which situations is it required?
- How does the presence of this FET influence the regeneration time (recovery to full communication ability) after a voltage drop (below 12V for longer than 0.1s)?
Thank you.