Controller improves efficiency and compactness of resonant converters while lowering noise emissions
26 July 2006
Power Electronics / Power Management
An advanced double-ended controller specifically designed for the series-resonant half-bridge topology for power supplies, has been introduced by STMicroelectronics. Offering a multitude of functions, the company says its robust high-voltage L6599 IC allows for the design of fully-protected and reliable power supplies that are particularly suited for use in applications such as LCD and plasma display TVs, high-end AC-DC adapters for laptops and game consoles, and servers and telecom SMPS.
The L6599 includes additional features such as a dedicated output for direct power factor corrector (PFC) connection, two-level over-current protection, latched disable input, burst-mode operation at light-load, and an input for power-on/off sequencing or brownout protection.
The device operates at 50% complementary duty-cycle with a fixed dead-time inserted to ensure soft-switching. It enables high-frequency (up to 500 kHz) operation with high efficiency and low EMI emissions. To drive the high-side switch with the bootstrap approach, the device combines a high-voltage floating structure, able to withstand more than 600 V, with a synchronous-driven high-voltage LDMOS device that eliminates the need for an external fast-recovery bootstrap diode.
The L6599 provides a typical peak current capability for both gate drivers of 0,6 A source and 1,2 A sink and enables designers to set the operating frequency range with an external oscillator. A non-linear soft-start prevents inrush current and minimises output-voltage overshoot. It also features low power consumption (<30 mW), guaranteed latch-up free operation with slew rates up to 50 V/ns, and protection.
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