Micro DC/DC converters are 'world's smallest'
Two series of DC/DC converters, claimed to be the world’s smallest in the 1.0A continuous output current category, have been released by Torex Semiconductor. The XCL219 and XCL220 series of ‘micro' DC/DC converters feature an integrated coil and control IC.
Because a power circuit can be configured by simply adding two ceramic capacitors to the external components, the devices contribute to space-saving on the board and shortening of development time. The integrated coil simplifies the board layout and minimises unwanted radiation noise and circuit operating trouble.
The operating voltage range is 2.5-5.5V, and the output voltage is selectable in the range 0.8-3.6V in steps of 0.05V. The switching frequency is 3.0MHz, and PWM control (XCL219) or PWM/PFM auto switching control (XCL220) can be selected for the control method.
The XCL219/XCL220 series uses HiSAT-COT, which is suitable for optical cable and PC peripheral devices that require a fast transient response, and portable and digital devices that incorporate a CPU. An ambient operating temperature of up to 105°C is supported, allowing the converters to be used in industrial equipment applications.
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