High voltage regulator is capable of low voltage output

A synchronous step-down switching regulator has been designed by Linear Technology to deliver 1A on a 100V input with efficiency up to 90%.

Burst mode operation is used to keep quiescent current under 7µA in no-load standby conditions.

Designed for 48V automotive systems and high voltage industrial applications, the regulator is capable of  delivering up to 1A of continuous output current to voltages as low as 0.8V, said the supplier.

Switching frequency of  100kHz to 1MHz is set by resistor.

The LT8631 utilises internal top and bottom high efficiency power switches with the necessary boost diode, oscillator, control and logic circuitry integrated into a single die.

The regulator is offered in a thermally enhanced TSSOP-20 package. An industrial temperature version, the LT8631IFE, is tested and guaranteed to operate from a -40°C to 125°C operating junction temperature.

 

 

Richard Wilson

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via Yuichun