ROHM SEMICONDUCTOR BM1Z002FJ AC Voltage Zero Cross Detection IC Evaluation Board User Guide

ROHM SEMICONDUCTOR BM1Z002FJ AC Voltage Zero Cross Detection IC

Evaluation Board

Specifications :

• Product: BM1Z002FJ Evaluation Board
• Model: BM1Z002FJ-EVK-002
• Input Voltage Range: 90 Vac to 264 Vac
• Description: Outputs a zero cross signal with high precision timing of targeted AC voltage
• Power Consumption: 1/10 of conventional zero cross signal generator circuit

Product Usage Instructions

Before Use:

1. Verify that the parts/components are not damaged or missing.
2. Ensure there are no conductive foreign objects on the board.
3. Exercise caution during soldering to prevent solder splash.
4. Check for condensation or water droplets on the circuit board.

During Use:

1. Avoid contact with conductive objects.
2. Avoid touching the board with bare hands or bringing them too close to the board.
3. Be cautious when using conductive tools like tweezers and screwdrivers.
4. Avoid operating beyond rated voltage to prevent defects or damages.
5. Wear insulated gloves when handling the board during operation.

After Use:

1. Discharge the electricity stored in the circuits after use.
2. Handle the board with insulated gloves to protect against electric shocks.

FAQ:

Q: What should I do if I accidentally touch the board with bare hands?
A: If accidental contact occurs, immediately disconnect power sources and seek medical attention if necessary.

AC Voltage Zero Cross Detection IC BM1Z002FJ Evaluation Board

＜High Voltage Safety Precautions＞

• Read all safety precautions before use
• Please note that this document covers only the BM1Z002FJ evaluation board (BM1Z002FJ-EVK-002) and its functions. For additional information, please refer to the datasheet.
• To ensure safe operation, please carefully read all precautions before handling the evaluation board
• Depending on the configuration of the board and voltages used, Potentially lethal voltages may be generated.
• Therefore, please make sure to read and observe all safety precautions described in the red box below.

Before Use

1. Verify that the parts/components are not damaged or missing (i.e. due to the drops).

2. Check that there are no conductive foreign objects on the board.

3. Be careful when performing soldering on the module and/or evaluation board to ensure that solder splash does not occur.

4. Check that there is no condensation or water droplets on the circuit board.
   During Use

5. Be careful to not allow conductive objects to come into contact with the board.

6. Brief accidental contact or even bringing your hand close to the board may result in discharge and lead to severe injury or death.
   Therefore, DO NOT touch the board with your bare hands or bring them too close to the board. In addition, as mentioned above please exercise extreme caution when using conductive tools such as tweezers and screwdrivers.

7. If used under conditions beyond its rated voltage, it may cause defects such as short-circuit or, depending on the circumstances, explosion or other permanent damages.

8. Be sure to wear insulated gloves when handling is required during operation.
   After Use

9. The ROHM Evaluation Board contains the circuits which store the high voltage. Since it stores the charges even after the connected power circuits are cut, please discharge the electricity after using it, and please deal with it after confirming such electric discharge.

10. Protect against electric shocks by wearing insulated gloves when handling.

This evaluation board is intended for use only in research and development facilities and should by handled only by qualified personnel familiar with all safety and operating procedures.
We recommend carrying out operation in a safe environment that includes the use of high voltage signage at all entrances, safety interlocks, and protective glasses.

AC/DC Converter

AC Voltage Zero Cross Detection IC
BM1Z002FJ Evaluation Board BM1Z002FJ-EVK-002

General Description

This evaluation board outputs a zero cross signal from 90 Vac to 264 Vac input. The evaluation board is mounted with BM12002FJ which outputs high precision zero cross timing of targeted AC voltage. BM1Z002FJ will provide power less down to 1/10 of what conventional zero cross signal generator circuit consumed. The evaluation board is also mounted with power supply for the IC.

Performance Specification

Not guarantee the characteristics is representative value. Ta = 25 °C

Operation Procedure

1. Necessary Equipment
2. Isolated AC power source (90 Vac to 264 Vac, 10 W or more)
3. Oscilloscope
4. Connect to Each Equipment
5. Set the AC power supply to 90 Vac to 264 Vac power supply off.
6. Connect the output pin (ACOUT pin, COMMON pin) to Oscilloscope . (Keep the ground isolated from AC Inputs and probes).
7. Connect the pin of the power supply (CN1) to AC power supply output with pair of wires.
8. Connect VCC pin, GND pin to DC power supply. Set it to output 5V and turn on the output (Clarify which node per the notes about the schematic)
9. AC power supply turn on.
10. Confirm the output waveform synchronized with the AC voltage.
    Caution: To avoid the electrical shock, please keep AC Power supply being isolated.

Application Circuit

This evaluation board outputs a zero cross signal. Output a zero cross point of the AC voltage from ACOUT pins by monitoring the voltage between VH_AC1 pins and the VH_AC2 pins of IC1. 600V withstand monitor circuit is integrated at VH_AC1 pin and VH_AC2 pin to realize high reliability and low power consumption.
ACOUT pin output 5V as high level and OV as low level.

BM1Z002FJ • General Description

Features

This IC outputs the AC voltage zero cross timing detection with high accuracy. By eliminating the need for opto-coupler 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 opto-coupler control.

Key Specifications

• VCC Input Power Supply Voltage Range: -0.3 V to +29.0 V
• VH_AC1 and VH_AC2 Pins Operation Voltage 600 V (Max)
• Circuit Current at Standby: 50 рА (Тур)
• Circuit Current at Operation: 160 A (Тур)
• Operating Temperature Range:  -40 °C to +105 °C

Pin Descriptions

Important Parameter

Parameter| Symbo l| Min| Typ| Max| Units| Conditions
---|---|---|---|---|---|---
Input Voltage Range| VIN| 90| 230| 264| V|
Output Voltage (High Level)| VOUTH| 4.75| 5.00| 5.25| V|
Output Voltage (Low Level)| VOUTL| 0.0| 0.0| 0.1| V|
Delay Time| TDELAY| –| 0.0| –| µs|

Zero cross delay time is adjustable by the external (R3) between DSET pins and GND pins.

• R3 setting with this evaluation board is OPEN. Thus, the delay time works in 0 μsec.
• R3 is not populated on the Eval Board as shipped so the typical delay between the Zero Crossing on the AC input and ACOUT pin is 0 μsec. Populating the R3 location with the values shown above will result in a shift in time betwen the detected Zero Crossing and when the ACOUT signal changes state. Note that the ACOUT change can be advanced or occur before (negative delay) the zero crossing.

Measurement Data

Input output waveform ( Measurement Diagram of is Figure 2. )

Application Circuit

(Condition) Vin = 90 Vac to 264 Vac

Parts List

(Note 1) Materials may be changed without notifying.

Layout

Size: 36 mm x 90 mm

Revision History

Notes

1. The information contained herein is subject to change without notice.

2. Before you use our Products, please contact our sales representative and verify the latest specifications :

3. Although ROHM is continuously working to improve product reliability and quality, semiconductors can break down and malfunction due to various factors.
   Therefore, in order to prevent personal injury or fire arising from failure, please take safety measures such as complying with the derating characteristics, implementing redundant and fire prevention designs, and utilizing backups and fail-safe procedures. ROHM shall have no responsibility for any damages arising out of the use of our Products beyond the rating specified by ROHM.

4. Examples of application circuits, circuit constants and any other information contained herein are provided only to illustrate the standard usage and operations of the Products. The peripheral conditions must be taken into account when designing circuits for mass production.

5. The technical information specified herein is intended only to show the typical functions of and examples of application circuits for the Products. ROHM does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by ROHM or any other parties. ROHM shall have no responsibility whatsoever for any dispute arising out of the use of such technical information.

6. The Products specified in this document are not designed to be radiation tolerant.

7. For use of our Products in applications requiring a high degree of reliability (as exemplified below), please contact and consult with a ROHM representative : transportation equipment (i.e. cars, ships, trains), primary communication equipment, traffic lights, fire/crime prevention, safety equipment, medical systems, servers, solar cells, and power transmission systems.

8. Do not use our Products in applications requiring extremely high reliability, such as aerospace equipment, nuclear power control systems, and submarine repeaters.

9. ROHM shall have no responsibility for any damages or injury arising from non-compliance with the recommended usage conditions and specifications contained herein.

10. ROHM has used reasonable care to ensur? the accuracy of the information contained in this document. However, ROHM does not warrants that such information is error-free, and ROHM shall have no responsibility for any damages arising from any inaccuracy or misprint of such information.

11. Please use the Products in accordance with any applicable environmental laws and regulations, such as the RoHS Directive. For more details, including RoHS compatibility, please contact a ROHM sales office. ROHM shall have no responsibility for any damages or losses resulting non-compliance with any applicable laws or regulations.

12. When providing our Products and technologies contained in this document to other countries, you must abide by the procedures and provisions stipulated in all applicable export laws and regulations, including without limitation the US Export Administration Regulations and the Foreign Exchange and Foreign Trade Act.

13. This document, in part or in whole, may not be reprinted or reproduced without prior consent of ROHM.

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Documents / Resources

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