BM1Z003FJ-E2

This IC outputs the AC voltage zero cross timing detection with high accuracy. By eliminating the need for photocoupler and external components required in conventional applications, it is possible to reduce the number of parts drastically and realize compact and highly reliable power supply applications. In addition, this IC can reduce standby power largely in comparison with an existing photocoupler control. By monitoring the voltage between the VH_AC1 and VH_AC2 pins, this IC outputs the zero cross point of AC voltage from the ACOUT pin. These pins have a built- in monitor circuit that tolerates 600 V and they realize high reliability and low power consumption. The ACOUT pin performs an in channel open drain output and this makes it possible to support various applications. It is necessary for the VH_AC1 pin to be connected to the N side of the AC input and for the VH_AC2 pin to be connected to the L side of the AC input.

Applications

• Household Appliances such as Rice Cooker and Dryer, etc.

Key features

• AC Zero Cross Detection Function
• Eliminates Photocoupler
• 600 V High Voltage Monitor
• Modifiable Zero Cross Delay Time
• n Channel Open Drain Output
• VCC Under Voltage Locked Out (VCC UVLO)