MP172GS-Z

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The MP172GS-Z belongs to the category of PMIC – AC DC Converters, Offline Switchers. It is a completely integrated offline AC/DC converter module based on a high frequency zero voltage switching (ZVS) topology. The MP172GS-Z is capable of providing a very low power dissipation across the entire range from no load to full overload condition. The AC/DC converter can be used for a variety of applications, such as universal input ac/dc adapters, battery powered products, and Industrial, Automotive and Communications applications.

MP172GS-Z permanent magnet motor (PMM) provides high efficiency and low audible noise when used with one of the MPS proprietary control schemes. The PMM control enables the MP172GS-Z to generate significantly lower audible noise compared to other designs with high voltage DC/DC solutions. The low power loss design, along with the ZVS topology, results in a very low thermal dissipation.

The MP172GS-Z employs a single stage topology; consisting of a half bridge, two pairs of switching devices, two coils and a capacitive pre-charged energy reservoir. By quickly lifting one of the two pairs of switches from the half bridge to the ground, the energy stored in the coils is dumped in the pre-charged energy initial stage. This high frequency level shift allows the device to provide a nearly constant frequency (with variations of up to 20%) during the entire input range, maintaining constant output voltage along the full load range of the product.

At the output stages, the user can take advantage of various features not readily available in other solutions. The output voltage and total output power are programmable, providing flexibility and reducing time-to-market. Additionally, the protection features include input line under-voltage lockout, output current and over-voltage limitations. The MP172GS-Z can be operated in continuous or pulse width modulated (PWM) mode, making it suitable for a wide range of applications.

In terms of design, the MP172GS-Z module works according to the principle of controlling switching parameters to modulate the operating frequency. The half bridge is driven directly by the integrated pulse width modulated switching controller, resulting in a very simple, economical and reliable design. The input voltage range is from 4.5V to 24V, with user selectable output voltage. The peak efficiency of the product is 92%, and the output ripple is very low.

In conclusion, the MP172GS-Z belongs to the category of PMIC – AC DC Converters, Offline Switchers, and is a completely integrated offline AC/DC converter module. It can be used for a variety of applications, such as universal input ac/dc adapters, battery powered products, and Industrial, Automotive and Communications applications. It is also capable of providing a low power dissipation, high efficiency and low audible noise, and protection features include input line under-voltage lockout, output current and over-voltage limitations. All of these features make the MP172GS-Z the ideal choice for a wide variety of applications.

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