BM2P181S-Z

BM2P181S-Z is a non-isolated type PWM DC/DC converter IC with built-in switching MOSFET. The PWM type DC/DC converter for AC/DC provides an optimum system for all products that include an electrical outlet. It enables simpler design of a high effective converter specializing in non-isolation. By a built-in startup circuit that tolerates 650 V, this IC contributes to low power consumption. A current detection resistor as internal device realizes the small power supply designs. Since a current mode control is utilized, the current can be restricted in each cycle and an excellent performance is demonstrated in the bandwidth and transient response. A frequency hopping function is also on chip, and it contributes to low EMI. In addition, a built-in super junction MOSFET which tolerates 650V makes the design easy. Application includes household appliances such as LED lights, air-conditioners and cleaners.

• PWM current mode method, frequency hopping function
• Burst operation at light load, built-in 650V startup circuit
• Built-in 650V super junction MOSFET
• VCC UVLO (undervoltage lockout), VCC OVP (overvoltage protection)
• Overcurrent detection function per cycle, soft start function
• Power supply voltage range 650V max (DRAIN pin)
• Current at switching operation is 500μA typ (DRAIN pin = open, Ta = 25°C)
• Current at burst operation is 350μA typical (Ta = 25°C)
• Switching frequency range from 21 to 29KHz (Ta = 25°C)
• DIP7K package, operation temperature range from -40°C to +105°C