MM3663

For AC-DC control ICs, MinebeaMitsumi offers primary side control ICs that support PWM + QR combined control, and secondary side synchronous rectification control ICs that can dynamically change the timing off. The MM3663 is the current mode PWM controller IC, designed for flyback converter. This IC can substantially reduce standby power by the start up circuit using the 500V high breakdown process, burst mode operating in low load and optimization of supply current. Frequency reduction function in load of middle range and minimum frequency limit function prevent chattering noise in low load, and improve average efficiency. Select function of maximum frequency (66kHz or 100kHz) and adjustment function of FB pin voltage for oscillation stop which is innovation expand flexibility of the power supply design. Others, frequency jittering function, X capacitor discharge function make the measures of EMI easy. The M3663 which has various protection functions can assist safety design of power supply.

MM3663 features :

• The startup circuit, using a 500V high breakdown process, reduces startup circuit loss
• Current mode PWM controller (select function of maximum oscillating frequency, 66kHz or 100kHz)
• Frequency reduction function in load of middle range improve average efficiency
• Low voltage of UVLO and low supply current in oscillation stop reduce standby power more
• Noise diffusion, downsize filter by frequency jitter function in all range
• X capacitor discharge function which don't increase standby power can make the measures of EMI easy
• A balance of standby power and output ripple in burst mode can be adjusted by adjustment function of FB pin voltage for oscillation stop. (GATE output stop voltage)
• Input voltage correction function of load current in over current protection realize flat correction characteristics
• Substantial protection functions included, current detect pin open detection, auxiliary winding short detection, and so on
• The CB certification in the X capacitor discharge function is acquired.【IEC 60065 (ed.8)、IEC 60950-1 (ed.2)、IEC 62368-1 (ed.2)】
• HV pin voltage : 500V
• Operating supply voltage : 10V to 24V
•  Supply current : typ. 0.7mA 0.3mA at burst mode
•  Maximum frequency : typ. 66kHz or 100kHz
• Package SOP-8J

MM3663 applications :

• Flat panel TV
• DVD Player, BD Player, BD Recorder
• Printer, Copying Machine, FAX
• AC/DC adapters
• Various power supplies