Torex adds 36V, 600mA inductor to microDC/DC family
The XCL230/XCL231 is the latest low supply current, built-in step-down DC/DC converter from Torex.
The XCL230/XCL231 step-down DC/DC converters have an integrated control IC and coil. According to Torex, integrating the coil makes for easier circuit board layout and minimises malfunction and noise from the component and wiring layout. The input voltage range is 3.0 to 36V, the switching frequency is 1.2MHz, and a synchronous rectification circuit is used to achieve a stable power supply at high efficiency.
The DC/DC converters are provides in a DFN3030-10B package, which measures 3.0 x 3.0mm and a height of 1.6mm.
The XCL230 series fixes the operation frequency using PWM control to suppress output ripple voltage and the XCL231 series automatically switches between PWM and PFM control to reduce loss by lowering the operation frequency during low loads to achieve high efficiency across the entire range from low to high loads. A 0.75V standard voltage supply is integral and the output voltage can be set to 1.0 to 5.0V using an external resistance.
The package allows the upper coil to be connect to the PCB with low resistance in both electricity and heat by penetrating the Cu post inside. Low resistance and high heat dissipation can be realised.
The soft start time is internally set to 2.0ms. A period of time longer than the internal soft-start can be set depending on the resistance and capacity connected to the EN/SS pin. An over-current protection function and thermal shutdown function are built in as protective functions to ensure safe use in the event of a short circuit.
Torex Semiconductor provides CMOS power management ICs targeted toward battery powered and energy efficient applications. Torex specialises in CMOS analogue technology, with LDO voltage regulators, voltage detectors and DC/DC converters.
