High-voltage switching regulators
19 November 2014
Power Electronics / Power Management
ON Semiconductor has added three new current mode, fixed frequency switching regulators to its expansive power management product portfolio. Targeted at use in compact, high-reliability offline AC-DC switched-mode power supplies, they incorporate an avalanche-rated 650 V MOSFET and frequency foldback along with skip mode that improve light-load and standby efficiency, meeting the Energy Star EPS 2.0 standard.
The high degree of integration results in minimal external components and reduces the overall bill of materials, making the devices highly suited to power system designs for household appliances, DVD players and set-top boxes. The NCP1129, NCP1126 and NCP1124 can deliver up to 25 W, 15 W and 12 W respectively, and each generate a jittered 65 kHz or 100 kHz switching frequency, resulting in marked improvements in electromagnetic interference (EMI) performance.
It is possible for the maximum peak current to be adjusted via an external resistor, facilitating ramp compensation, so that stable continuous conduction mode (CCM) operation can be maintained. The frequency foldback mode permits power conversion efficiency levels to be raised under light load conditions, while skip mode can be activated to reduce standby power consumption at (or close to) a no-load scenario – with less than 100 mW drawn at high line when in standby mode.
The NCP112x devices all have a wide array of protective features including a 50 ms timer based, auto-recovery short circuit protection function. Furthermore, short-circuit fault conditions can be independently detected from the auxiliary winding voltage, thereby ensuring that comprehensive safeguards against short circuit events are in place.
The devices incorporate built-in thermal shutdown and over-voltage response mechanisms, as well as a 2 kV human body model (HBM) resilience rating to electrostatic discharge. They come in lead-free PDIP-7 packages that support an operational temperature range of -40°C to +150°C.
For more information contact Arnold Perumal, Avnet Kopp, +27 (0)11 319 8600, [email protected], www.avnet.co.za
Further reading:
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...
High-density power module for AI at the edge applications
Altron Arrow
Power Electronics / Power Management
The MCPF1412 power module from Microchip has integrated I2C and PMBus interfaces for flexible configuration and monitoring.
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.
Read more...
Distributed Energy Resource Management Systems
Schneider Electric South Africa
Power Electronics / Power Management
In addition to grid stability, DERMS also play a role in energy trading with some countries leveraging DERMS for real-time energy trading.
Read more...
BYD introduces new energy storage solutions
Power Electronics / Power Management
BYD Energy Storage, a business division of BYD, has introduced the new BYD Battery-Box LV5.0+ at the recent Solar & Storage Live Africa in Johannesburg.
Read more...
Micro energy harvesting
Power Electronics / Power Management
Panasonic Industry and Miromico partner to show effective micro energy harvesting for industrial applications.
Read more...
printer friendly version