Bias Power Series Power Supply

Cita Technologies' Bias Power series is a revolutionary, micro-sized, drop-in switching power supply module. It contains patented technology with unique features that provide solutions for a wide range of applications, including low power wireless and many other intelligent control devices. The patented SMPS topology is different from any other; it is quiet, powerful, and green.

Switching is synchronized and occurs only 10% of the time so there is very little EMI/EMC interference with other circuits. This means no extra filtering or shielding is needed, helping to achieve a longer transmission range with more reliable data communication in low power wireless applications.

There is no power de-rating across the entire wide temperature range. No current limit design margin is needed when selecting a module. Charge large supercaps faster than any regular SMPS with twice the power rating.

High efficiency with ultra-low standby power and very little self-generated heat make it ideal for intelligent devices such as smart sensors, smart meters, smart lighting, smart grid, M2M or IoT, and any other control applications.

Bias Power AC/DC power supplies are available with two different types of outputs to fit users’ applications. The characteristics of the main (Vo) and auxiliary (Vr) outputs are different and each has application-specific benefits that can provide high value to the system designer.

Vo is a voltage-regulated output with a constant power mode instead of a conventional current limit. This output is best suited as a source for isolated DC utility power, which may be used directly or post-regulated with either a linear regulator or a DC/DC converter. Vo is self-protecting; it cannot be overloaded and it can be shorted indefinitely. So unlike design-your-own or partially complete modules where significant design margin is required to stay far away from current limit, there is no need to oversize a Bias Power supply. The graceful transition from voltage regulation to constant power along with the wide range of product ratings allows the designer to select a supply tightly matched to the design load.

Vr is also a voltage-regulated output and is thermally protected from overload. It has very low output ripple capable of driving elements that require a low-noise, tightly-regulated supply. In addition, Vr is supplied internally by Vo. This means that any capacitance added to Vo can increase the hold-up time of Vr as well.