The SY7T501 and SY7T502 are Silergy’s latest single-phase energy-sensing ICs for cost-sensitive IoT applications such as smart plugs, dimmers, power strips, smart lighting, building automation, and other load points.
The devices feature a line voltage zero-crossing comparator with a dedicated state machine for detection and filtering. The filters and state machine reduce spurious zero-crossing detections in cases where the AC voltage is heavily distorted.
The SY7T502 integrates a relay control block for single coil relays for both latching and non-latching types. The relay control block contains the relay’s contact sensing and allows timing corrections to compensate for relay delay variations due to wear and other conditions.
The devices also include a dimming control block for lag and advance controls and configurable digital I/O’s. A 32-bit signal processing unit with a delta-sigma converter, a precision bandgap reference, and an analog front-end enables accurate energy measurement. The signal processing unit processes the ADC data to provide measurements including VRMS, IRMS, power, active power, and line frequency.
The internal filtered zero-crossing signal is used internally by both the relay and dimmer controls and can also be used as an output for the line voltage sign or zero-crossing pulse.
A UART interface enables communication with the host processor and includes a communication protocol with data integrity check and auto-baud function. The auto-baud allows the host processor to set the interface to different baud rates including non-standard rates.
Cutting-edge solutions for Africa’s clean energy future
Power Electronics / Power Management
As Africa pushes towards reliable, affordable, and sustainable energy, Sungrow is driving transformation with cutting-edge innovations that enhance grid stability, reduce energy costs, and expand access to clean power.
Read more...Reliable power solution Conical Technologies
Power Electronics / Power Management
The Mibbo MLD-120W-xxVx is a robust DIN-rail mounted DC-DC converter with a 120 W output capacity specifically designed for industrial and automation applications.
Read more...Easing the path for IPPs navigating local energy regulations
Power Electronics / Power Management
Independent Power Producers (IPPs) and developers venturing into South Africa’s renewable energy sector face an onerous and challenging regulatory landscape characterised by uncertainty in securing grid connections and considerable development costs.
Read more...Wide input voltage buck-boost converter Altron Arrow
Power Electronics / Power Management
The MAX77859 from Analog Devices is a high-efficiency, high-performance buck-boost converter targeted for systems requiring a wide input voltage range of between 2,5 and 22 V.
Read more...Development kit for TI’s SN6507
Power Electronics / Power Management
This comprehensive solution is designed to help engineers evaluate the performance of TI’s SN6507 transformer driver for isolated power supplies.
Read more...High-voltage IGBT Hi-Q Electronics
Power Electronics / Power Management
Diotec Semiconductor has launched the DIW030M060 IGBT, a 600 V, 30 A device with a built-in reverse diode.
Read more...DC converter for Hi-Rel applications Vepac Electronics
Power Electronics / Power Management
The MFK2812S from Crane Aerospace & Electronics is a DC-DC converter with an input voltage range of 16 to 50 V and an output of 12 V at up to 2,08 A.
printer friendly version