Resonant controller helps save energy: News from Silica

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Available now from Silica, the L6599 is an advanced controller specifically designed for the series-resonant half-bridge topology. An evolutionary advance over the previous L6598, the new L6599 includes additional features such as a dedicated output for direct power factor corrector (PFC) connection, two-level overcurrent protection (OCP), 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 500kHz) operation with high efficiency and low electromagnetic interference (EMI) emissions.

A non linear soft-start prevents inrush current and minimises output-voltage overshoot.

The device also features a controlled burst-mode operation, thus considerably reducing the average switching frequency and the associated losses under lightly loaded or unloaded conditions.

With the new resonant controller, designers can meet energy-saving requirements even in power-factor-corrected systems.

A dedicated output enables the IC to switch off the power factor corrector (PFC) preregulator during burst-mode operation, hence eliminating the no-load consumption of this stage.

Other key features of the L6599 include low power consumption (below 30mW) and a high-performance overcurrent protection (OCP) providing complete protection against both overload and short circuits.

The L6599 is in production and is offered in three versions: type L6599N is assembled in a PDIP16 package; L6599D and L6599DTR in an SO16N package.

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News Release from: Silica
Edited by the Electronicstalk Editorial Team on 2 August 2006

Resonant controller helps save energy

The new L6599 is an advanced controller specifically designed for the series-resonant half-bridge topology.

Note: Readers of the Editor’s free email newsletter will have read this news when it was announced. . It’s free!

News Release from: Silica Edited by the Electronicstalk Editorial Team on 2 August 2006

Resonant controller helps save energy

The new L6599 is an advanced controller specifically designed for the series-resonant half-bridge topology.

Note: Readers of the Editor’s free email newsletter will have read this news when it was announced. . It’s free!

News Release from: Silica
Edited by the Electronicstalk Editorial Team on 2 August 2006