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SANTA CLARA, CA — ROHM has released its BM1ZxxxFJ, an integrated zero cross detection IC series optimized for home appliances. The rising demand for smart appliances and IoT applications has added communication functionality to home appliances. As it is necessary for such devices to always be on to maintain communication, manu- facturers are required to reduce standby power consumption to around 0.5W. This calls for lower standby power consumption by the motor and power supply blocks along with innovative new technologies. Many appliances require a zero cross detec-


tion circuit for detecting the 0V point (zero cross point) of the AC waveform in order to provide effi- cient control of both motors and MCUs. However,


Zero Cross Detection ICs from ROHM Semiconductor


in terms of power consumption, conventional zero cross detection circuits utilize a photocoupler that


December, 2020


accounts for nearly half of the standby power of the entire system. In response, ROHM has developed, according


to the company, the first integrated zero cross detection solution for power supplies in the home appliance sector. The integrated zero cross detec- tion IC provides designers a turnkey zero cross detector without the need for a complex design using discrete components. This integrated solu- tion does not use a photocoupler typically used in other solutions, and, therefore, it further reduces standby current consumption and increases long- term reliability. The BM1ZxxxFJ series reduces standby power


BM1ZxxxFJ zero cross detection ICs for connected appliances.


consumption of the zero cross circuit to just 0.01W, while continuously powering the system. The error in delay time (which varies depending on the AC voltage) that exists with conventional photocoupler-equipped zero cross detection circuits is limited to ±50 µs or less. This allows for the efficient drive of motors — even with the different AC supply voltages used in various countries and regions — as well as MCUs (which is difficult to achieve using conventional zero cross detection circuits). At the same time, eliminating the need for a photocou- pler contributes to greater application reliability by reducing risks related to


age-based degradation. Contact: ROHM Semiconductor


USA, 2323 Owen Street, Santa Clara, CA 95054 % 408-720-1900 E-mail: jpontious@rohmsemiconductor.com Web: www.rohmsemiconductor.com


AUTOMATION. DRIVEN BY KURTZ ERSA. PERFECT SOLUTIONS FROM A SINGLE SOURCE


Ersa is successful worldwide with systems and machines for the production of electronic assemblies. There is less and less demand for single machines. Rather, it is about offering complete solutions, i.e.complete production lines and integrated process automation, and thus assuming responsibility for the entire production process. This applies both to the requirements of mass production and to the individual, demand-oriented production of customer-spe- cific products. Especially in this area, there is an increasing demand for solutions that enable flexible manufacturing strategies.


Ersa offers individual process optimization through perfectly synchronized handling and automation solutions. The Kurtz Ersa Automtion modular system impresses with a wide range of conveyor systems, work stations for as- sembling or quality inspection, robotic solutions and much more. In any case, Ersa has the right solution for every individual requirement.q


HELUKABEL Certifies Network Cables to PLTC-ER


WEST DUNDEE, IL — Select HELUKABEL PROFINET and PROFIBUS cables are now Power- Limited Tray Cable — Exposed Run (PLTC-ER) certified. These are the PROFINET Type A, PROFINET Type B and PROFIBUS DP. The original PLTC certification


allowed the products to extend out- side of the cable tray 6 ft (1.8m). With the upgraded PLTC-ER certifi- cation, these products can extend up to 50 ft (15m) outside of the cable tray without additional protection. The PROFINET Type A and


Type B cables are rated Cat 5e. They can be used in environments that vary in temperature between –40 and +176°F (–40 to +80°C). Their PVC jackets are flame retardant according to flame test IEC 60332-1- 2 and UV-resistant according to UL 2556 Section 4.2.8.5 and UL 1581 Section 1200, respectively. PROFIBUS DP has a stranded


pair and a violet outer jacket. It can be used in environments that vary in temperature between –40 and +176°F (–40 to +80°C). Its PVC jack- et is flame retardant according to the FT4 vertical-tray flame test accord- ing to UL 2556 Section 9.6 and UL


1685 Section 12 to 19. Contact: HELUKABEL USA,


Kurtz Ersa, Inc. | Plymouth WI 53073 | USA | Phone: +1 920 893 1779 | usa@kurtzersa.com www.driven-by-kurtzersa.com


1201 Wesemann Drive, West Dundee, IL 60118 % 847-930-5118 E-mail: kevin.siegel@helukabel.com Web: www.helukabel.com


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