ZPSA4012 Power Supplies - External/Internal (Off-Board)

AC/DC converters are used in many different applications to convert alternating current (AC) to direct current (DC). The ZPSA4012 is a high performance AC/DC converter that provides clean, low noise DC outputs and is highly efficient for powering a range of devices and equipment. The ZPSA4012 is used in a variety of applications such as medical equipment, industrial control systems, laboratory instruments, lighting systems, and communication systems.

The ZPSA4012 is a full-bridge AC/DC converter with an output voltage rating of 4.2V DC. The module uses two independent switch-mode power supplies to provide two separated, isolated DC outputs that can be adjusted independently with an external multivibrator. The module\'s input voltage range is from 198V to 240V AC, and the output is adjustable within a range of 2-6V DC. The ZPSA4012 operates in a range of temperatures between -20°C and +60°C and at a power range of up to 30 volts.

The ZPSA4012 has a high degree of efficiency and low ripple and noise in both outputs, making it an ideal choice for many applications. The converter also features protective circuit elements that protect the output from over current, over voltage, and over temperature conditions. Additionally, the converter is equipped with active filtering and transient-suppression circuits, as well as an integrated EMC filter for EMI/RFI protection.

The working principle of the ZPSA4012 AC/DC converter is based on the basic principle of a switching voltage regulator. The power supply consists of two separate DC-DC converters connected in series to form a full-bridge. The converter works by switching the power transistors on and off in a predetermined sequence, transforming the AC input voltage into a regulated DC output voltage. The output voltage is regulated by monitoring the closed-loop feedback from an integrated voltage regulator, which compensates for fluctuations in the input voltage.

The adjustable output of the ZPSA4012 is regulated by an external multivibrator, which can be programmed to provide varying DC output voltage levels. The output voltage is also monitored by a current-sense resistor inside the converter, which measures the amount of current being drawn by the load and compensates for changing load conditions. This internal current-sense feedback circuit allows for fast and efficient response times to changes in the load conditions, providing precise and responsive control of output voltage.

The ZPSA4012 is a highly efficient and reliable AC/DC converter, and is used in a variety of applications for powering a range of devices and equipment. Its compact form factor, adjustable output voltage, and built-in protection features make the ZPSA4012 an ideal choice for many applications. The converter\'s low noise, high efficiency, and fast response time make it an excellent choice for power supply applications that require smooth, clean, and reliable DC outputs.