Torex Semiconductor Ltd. has launched the XC9268 series of step-down synchronous DC/DC converters compatible with 36V input and 600mA output, for industrial equipment and consumer appliances having an input source of 12V or 24V.
The XC9268 series has a maximum input voltage of 36V, making it ideal for use as a power supply for step-down from a 12V or 24V line. Its low minimum input voltage of 3.0V makes a MAX Duty of 100% possible, so it can also be applied as a component in an input OR circuit used with a backup line.
The operation mode is PWM / PFM automatic switching control. 83% (VIN = 12V, VOUT = 5.0V, IOUT = 1mA) efficiency is realized in the standby load state such as microcontroller. In addition, even with heavy load in the active state, it achieves 85% or more efficiency and high efficiency is realized in the entire load area. ( Figure 1) Its output current is 600mA, and when compared with voltage regulators conventionally, its high-efficiency power supply circuit generates less heat, with reduced mounting space at 1/4 the required space of past products.
The switching frequency can be selected from either 1.2MHz or 2.2MHz and since it operates by PWM control. The soft-start time has been set internally to be 2.0ms (Typ.), but a time longer than the internal soft-start can be set optionally depending on the resistance and capacity connected to the EN/SS terminal. The compact USP-6C package with the power Good function eliminates the need of a voltage detector to monitor output voltage, allowing the reduction of external component t counts. The Power good function and external softstart function make the sequence control easy. The protective circuits of an overcurrent protection and a thermal shutdown which are built into these products enable safe use.
For more details on XC9268, please click here: https://www.torexsemi.com/products/step-down-dcdc-converters/series/?name=xc9268