describe

SD8585S is a primary-side controlled switching power supply (PSR) with built-in high-voltage MOS tube power switch.

PFM modulation technology provides precise constant voltage/constant current (CV/CC) control loop with very high stability

performance and average efficiency.

Using SD8585S to design the system, no optocoupler is needed, secondary feedback control and loop compensation can be omitted, and the system can be accurately

Simplify the circuit and reduce system costs.

SD8585S is suitable for 10~12W output power and has built-in line loss compensation function and peak current compensation function.

Main features

Built-in high-voltage MOS tube power switch

Primary side control mode

Low starting current

Leading edge blanking

Cycle-by-cycle throttling

PFM modulation

Peak reduction mode

Overvoltage protection

Undervoltage lockout

Open loop protection

Maximum on-time protection

Over-temperature protection

Line loss voltage compensation

Peak current compensation