ROHM BM1P066FJ-E2

The PWM control IC for AC/DC “BM1P066FJ” provides an optimum system for all products that include an electrical outlet. A built - in start circuit that withstands 650 V helps to keep power consumption low. Both isolated and non - isolated versions are supported, making for simpler design of various types of low - power converters. Switching MOSFET and current detection resistors are external devices, thus achieving a higher degree of freedom in power supply design. The switching frequency is set as fixed. Since current mode control is used, a current limit is imposed in each cycle, and excellent performance is demonstrated in bandwidth and transient response. With a light load, frequency is reduced and higher efficiency is realized. A frequency hopping function is also built in, contributing to low EMI. Also on chip are soft start and burst functions, a per - cycle overcurrent limiter, VCC overvoltage protection, overload protection, and other protection functions.

• PWM frequency: 65 kHz
• PWM current mode method
• Frequency hopping function
• Burst operation during light load / Frequency reduction function
• 650 V start circuit
• VCC pin undervoltage protection
• VCC pin overvoltage protection
• CS pin open protection
• CS pin Leading - Edge - Blanking function
• Per - cycle overcurrent limiter function
• Overcurrent limiter with AC voltage compensation function
• Soft start function
• Secondary overcurrent protection circuit

• AC adapters
• TVs
• Household appliances (vacuum cleaners, humidifiers, air cleaners, air conditioners, IH cooking heaters, rice cookers, etc.)