STR-X6750
Description
The STR-X6700 series integrates a quasi-resonant control IC and a MOSFET with avalanche guarantee.
Key Features
- include the following: Auto standby mode (burst oscillation) or manual standby mode (UVLO intermittent oscillation) in the standby mode
- In addition to the standard quasi-resonant operation, a bottom-skip mode is available for increased efficiency from light to medium load
- Soft-start operation at start-up
- Reduced switching noise (pared to conventional PWM hard-switching solution) with a step-drive function
- Built-in avalanche-energy-guaranteed power MOSFET (to simplify surge-absorption circuit; no VDSS derating is required)
- In case of low output voltage and narrow on-duty cycle, the POUT (W) bees lower than the above
- bAuto-standby mode not included
- The R2 value needs to be set for more than the hold current of the latch circuit (140 μA max.) and to operate at the minimum AC input
- If the value of R2 is too high, the C3 charge current will be reduced
- Consequently, it will take longer to reach the OperationStart voltage
