Datasheet BM1Z102FJ, BM1Z103FJ (Rohm) - 5
| Fabricante | Rohm |
| Descripción | AC Voltage Zero Cross Detection IC |
| Páginas / Página | 23 / 5 — BM1Z102FJ BM1Z103FJ. 1. AC Voltage Zero Cross Detection – continued. 1.1 … |
| Formato / tamaño de archivo | PDF / 1.3 Mb |
| Idioma del documento | Inglés |
BM1Z102FJ BM1Z103FJ. 1. AC Voltage Zero Cross Detection – continued. 1.1 Startup Sequence. TSZ02201-0F1F0A200610-1-2
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BM1Z102FJ BM1Z103FJ 1. AC Voltage Zero Cross Detection – continued 1.1 Startup Sequence
Show a start sequence in Figure 4. Zero Cross Points L - N 0 V Voltage VP VUVLO1 VCC pin Voltage 1st cycle 2nd cycle 3rd cycle VH_AC1 – GND Voltage VH_AC2 – GND Voltage ACOUT – GND Voltage A B C D E Figure 4. Start Sequence A: AC Input voltage is applied. B: When the VCC pin voltage becomes more than VUVLO1, the IC starting operation. C: The VH_AC1 and VH_AC2 pins voltage in 1st cycle is detected after the starting operation. D: The VH_AC1 and VH_AC2 pins voltage in 2nd cycle is detected and the internal arithmetic of IC is completed. E: After the arithmetic, the first positive edge point of the ACOUT pin voltage is detected. After that, the IC repeats the high to low pulse operation at the zero cross point. (The zero cross detection starts to operate at 3rd cycle from starting IC’s operation.) www.rohm.com
TSZ02201-0F1F0A200610-1-2
© 2019 ROHM Co., Ltd. All rights reserved. 5/20 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
Show a start sequence in Figure 4. Zero Cross Points L - N 0 V Voltage VP VUVLO1 VCC pin Voltage 1st cycle 2nd cycle 3rd cycle VH_AC1 – GND Voltage VH_AC2 – GND Voltage ACOUT – GND Voltage A B C D E Figure 4. Start Sequence A: AC Input voltage is applied. B: When the VCC pin voltage becomes more than VUVLO1, the IC starting operation. C: The VH_AC1 and VH_AC2 pins voltage in 1st cycle is detected after the starting operation. D: The VH_AC1 and VH_AC2 pins voltage in 2nd cycle is detected and the internal arithmetic of IC is completed. E: After the arithmetic, the first positive edge point of the ACOUT pin voltage is detected. After that, the IC repeats the high to low pulse operation at the zero cross point. (The zero cross detection starts to operate at 3rd cycle from starting IC’s operation.) www.rohm.com
TSZ02201-0F1F0A200610-1-2
© 2019 ROHM Co., Ltd. All rights reserved. 5/20 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