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POL convertor boasts top transient response

Edited by the Electronicstalk editorial team Mar 1, 2005

The Tarka range is a new generation of nonisolated DC/DC convertors from leading global power solutions provider Lambda.

Available now from Young Electronics, the Tarka range is a new generation of nonisolated DC/DC convertors from leading global power solutions provider Lambda.

The first model to be unveiled is the PL15, a 5V input, 15A output single-inline packaged unit.

Unmatched transient response and tight line/load regulation put it ahead of its competitors.

Aimed at point-of-load applications, the new convertor has a user-selectable output voltage range of 0.9 to 3.3V.

Fixed by a single resistor, the choice of output voltage on one model offers designers total flexibility in a market of rapidly changing processor voltages.

It makes them ideally suited to the latest generation of microcontroller and DSP devices.

"Due to such low voltages used by micros today engineers really cannot afford sudden voltage transients within a design", said Scott Lacey, DC/DC Product Manager at Young Electronics.

Transient response is a key factor when choosing a POL convertor.

The PL15 has a transient output voltage deviation of less than 90mV for a 50% load change with a settling time of just 60us with no external capacitors.

When designing DC/DC convertors, setting the switching frequency creates a tradeoff between desired efficiency and undesired ripple voltage.

Using synchronous rectifier technology Lambda has optimised the switching frequency at 300kHz, delivering efficiencies of up to 96% and ripple voltages as low as 16mV peak-peak.

The Tarka range offers designers built-in current limit and short-circuit protection, as well as overtemperature protection.

Input logic shutdown is also provided.

"The Tarka range's technical advantages combined with its local UK manufacture, put it head and shoulders above competing point-of-load products", added Lacey.

"Making the new units at Lambda's world-class Ilfracombe plant means that we can guarantee European customers rapid delivery and low minimum order quantities, essential to today's OEMs".