Datasheet BM1Z102FJ, BM1Z103FJ (Rohm) - 4
| Manufacturer | Rohm |
| Description | AC Voltage Zero Cross Detection IC |
| Pages / Page | 23 / 4 — BM1Z102FJ BM1Z103FJ. Description of Blocks. 1. AC Voltage Zero Cross … |
| File Format / Size | PDF / 1.3 Mb |
| Document Language | English |
BM1Z102FJ BM1Z103FJ. Description of Blocks. 1. AC Voltage Zero Cross Detection. TSZ02201-0F1F0A200610-1-2. 12.Mar.2020 Rev.00
Model Line for this Datasheet
Text Version of Document
BM1Z102FJ BM1Z103FJ Description of Blocks 1. AC Voltage Zero Cross Detection
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 n 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. L D1 D3 AC Input VP N D2 D4 L > N D2, D3 ON L < N D1, D4 ON VH_AC2 Power Supply VH_AC1 BM1Z10xFJ ACOUT GND Figure 1. Example of Circuit Diagram AC Voltage × 1.41 AC Voltage × 1.41 L - N 0 V L - N 0 V Voltage Voltage VH_AC1 – GND VH_AC1 – GND Voltage AC Voltage × 1.41 Voltage AC Voltage × 1.41 VH_AC2 – GND VH_AC2 – GND Voltage Voltage 0 V 0 V ACOUT – GND ACOUT – GND Voltage Voltage tWIDTH Figure 2. Output Waveform (BM1Z102FJ) Figure 3. Output Waveform (BM1Z103FJ) www.rohm.com
TSZ02201-0F1F0A200610-1-2
© 2019 ROHM Co., Ltd. All rights reserved. 4/20 TSZ22111 • 15 • 001
12.Mar.2020 Rev.00 1
Document Outline General Description Features Applications Key Specifications Package Lineup Typical Application Circuit Pin Configuration Pin Descriptions Block Diagram Description of Blocks 1. AC Voltage Zero Cross Detection 1.1 Startup Sequence 1.2 VH_AC1 Pin UVLO 1.3 VH_AC1 and VH_AC2 Pins Noise Filter 1.4 DSET Pin Setting 2. DC Voltage Monitor Circuit Absolute Maximum Ratings Thermal Loss Recommended Operating Conditions Electrical Characteristics Typical Performance Curves I/O Equivalence Circuit Operational Notes 1. Reverse Connection of Power Supply 2. Power Supply Lines 3. Ground Voltage 4. Ground Wiring Pattern 5. Recommended Operating Conditions 6. Inrush Current 7. Testing on Application Boards 8. Inter-pin Short and Mounting Errors 9. Unused Input Pins 10. Regarding the Input Pin of the IC 11. Ceramic Capacitor 12. Thermal Shutdown Circuit (TSD) 13. Over Current Protection Circuit (OCP) Ordering Information Marking Diagram Physical Dimension and Packing Information Revision History
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 n 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. L D1 D3 AC Input VP N D2 D4 L > N D2, D3 ON L < N D1, D4 ON VH_AC2 Power Supply VH_AC1 BM1Z10xFJ ACOUT GND Figure 1. Example of Circuit Diagram AC Voltage × 1.41 AC Voltage × 1.41 L - N 0 V L - N 0 V Voltage Voltage VH_AC1 – GND VH_AC1 – GND Voltage AC Voltage × 1.41 Voltage AC Voltage × 1.41 VH_AC2 – GND VH_AC2 – GND Voltage Voltage 0 V 0 V ACOUT – GND ACOUT – GND Voltage Voltage tWIDTH Figure 2. Output Waveform (BM1Z102FJ) Figure 3. Output Waveform (BM1Z103FJ) www.rohm.com
TSZ02201-0F1F0A200610-1-2
© 2019 ROHM Co., Ltd. All rights reserved. 4/20 TSZ22111 • 15 • 001
12.Mar.2020 Rev.00 1
Document Outline General Description Features Applications Key Specifications Package Lineup Typical Application Circuit Pin Configuration Pin Descriptions Block Diagram Description of Blocks 1. AC Voltage Zero Cross Detection 1.1 Startup Sequence 1.2 VH_AC1 Pin UVLO 1.3 VH_AC1 and VH_AC2 Pins Noise Filter 1.4 DSET Pin Setting 2. DC Voltage Monitor Circuit Absolute Maximum Ratings Thermal Loss Recommended Operating Conditions Electrical Characteristics Typical Performance Curves I/O Equivalence Circuit Operational Notes 1. Reverse Connection of Power Supply 2. Power Supply Lines 3. Ground Voltage 4. Ground Wiring Pattern 5. Recommended Operating Conditions 6. Inrush Current 7. Testing on Application Boards 8. Inter-pin Short and Mounting Errors 9. Unused Input Pins 10. Regarding the Input Pin of the IC 11. Ceramic Capacitor 12. Thermal Shutdown Circuit (TSD) 13. Over Current Protection Circuit (OCP) Ordering Information Marking Diagram Physical Dimension and Packing Information Revision History
