Clare's LIA120 is an optically isolated linear error amplifier with integrated gain and temperature compensation. The device features a shunt regulator, a linear optocoupler and a secondary side sensor for temperature and gain compensation. Integrating these building blocks into an 8-pin surface mount package provides a space saving solution for processing the feedback signal in closed loop power control circuits, as necessary in switching power supplies, UPSs, inverters and motor control systems. The IC provides linear signal transfer, with optical isolation between the output and the input circuits in these products.
Functionally, the LIA120 addresses the important functions for error signal processing in an isolated power control system: First, a circuit comprised of the optical link, a voltage reference and an error amplifier monitor the error signal on the output side of the power system. Secondly, a linear signal is transferred optically to the input side and provides a scaled feedback to the PWM controller on the input side for the power semiconductors. A critical enhancement to this technique is the inclusion of additional sensing for the linear response of the LIA120, with low thermal variations and increased frequency response.
The LIA120 offers design flexibility. Voltage gain of the error signal is set simply with two resistors. The frequency response across the isolation barrier is 40 kHz. The IC is robust for adverse environments offering an isolation voltage of 3750 V r.m.s. Other applications include isolated amplifiers, central office supplies and telephone line isolation.
For more information contact Les Bidgood, Arrow Altech Distribution, +27 (0)11 923 9600, [email protected]
Ultra-low power MEMS accelerometer Altron Arrow
Analogue, Mixed Signal, LSI
Analog Devices’ ADXL366 is an ultra-low power, 3-axis MEMS accelerometer that consumes only 0,96 µA at a 100 Hz output data rate and 191 nA when in motion-triggered wake-up mode.
Read more...Converting high voltages without a transformer Altron Arrow
Editor's Choice Power Electronics / Power Management
With appropriate power converter ICs, such as the LTC7897 from Analog Devices, many applications can be suitably powered without having to use complex and cost-intensive transformers.
Read more...BT Audio 4 Click board Dizzy Enterprises
Analogue, Mixed Signal, LSI
The BT Audio 4 Click board from MIKROE provides high-quality wireless audio streaming and data comms over Bluetooth.
Read more...Precision MEMS IMU modules Altron Arrow
Analogue, Mixed Signal, LSI
The ADIS16575/ADIS16576/ADIS16577 from Analog Devices are precision, MEMS IMUs that includes a triaxial gyroscope and a triaxial accelerometer.
Read more...Altron Arrow introduces GX10 supercomputer Altron Arrow
AI & ML
Powered by the NVIDIA GB10 Grace Blackwell superchip, this is desktop-scale AI performance previously only available to enterprise data centres.
Read more...MEMS with embedded AI processing Altron Arrow
Analogue, Mixed Signal, LSI
STMicroelectronics has announced an inertial measurement unit that combines sensors tuned for activity tracking and high-g impact measurement into a single, space-saving package.
Read more...Multicore CPUs with on-chip accelerators Altron Arrow
DSP, Micros & Memory
NXP’s MCX N94x and N54x MCUs offer advanced features for consumer and industrial applications, including connectivity, security, and power management.
Read more...RF agile transceiver Altron Arrow
Telecoms, Datacoms, Wireless, IoT
The AD9361 is a high performance, highly integrated RF Agile Transceiver designed for use in 3G and 4G base station applications.
Read more...High-performance IMU RS South Africa
Analogue, Mixed Signal, LSI
TDK Corporation has announced availability of the new InvenSense SmartMotion ICM-536xx family of high-performance 6-axis IMUs.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version