Non-isolated DC / DC power supply module

By designing a non-isolated DC/DC power supply module and using pins and external capacitors and resistors to build a protection mechanism, the problem of slow voltage regulation response of existing DC/DC power supply modules is solved, stable output and multiple protection functions are achieved to adapt to different application scenarios.

CN223321982UActive Publication Date: 2025-09-09NANJING TIANYI HANGTAI ELECTRONIC TECH CO LTD
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Patent Information

Application Number
CN202422457999.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-11
Publication Date
2025-09-09
Estimated Expiration
2034-10-11

AI Technical Summary

Technical Problem

Existing DC/DC power modules react slowly when adjusting the voltage range, cannot provide a stable output voltage, and lack effective protection mechanisms.

Method used

A non-isolated DC/DC power supply module is designed, which includes a frequency setting pin RFREQ, a power good output indication pin PGOOD, a feedback pin FB, an output voltage pin VOUT, a module ground GND, and an input voltage pin VIN. A protection mechanism is constructed through external capacitors and resistors, including overcurrent, short circuit, undervoltage, input undervoltage lockout, and overtemperature protection. Remote enable control is achieved using the EN pin.

Benefits of technology

It achieves stable output voltage regulation and has multiple protection features, including overcurrent, short circuit, undervoltage, input undervoltage lockout and overtemperature protection, resistance value calculation to adapt to different situations, and provides remote enable control and power output indication.

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Abstract

The utility model relates to the technical field of power supply modules, and discloses a non-isolated DC / DC power supply module, which comprises an input voltage pin VIN, the input voltage pin VIN is connected with a power supply for a converter, a capacitor is connected between the input voltage pin VIN and an output voltage pin VOUT, a module ground GND is connected with a frequency setting pin RFREQ, and the frequency setting pin RFREQ is connected with the converter. The output voltage pin VOUT is connected with the normal output indication pin PGOOD in the module, the output voltage pin VOUT is connected with the feedback pin FB, and the resistor RFB is connected between the output voltage pin VOUT and the feedback pin FB, so that stable output voltage is provided through effective application of the module; the power supply has multiple protection characteristics such as over-current protection, short-circuit protection, under-voltage protection, input under-voltage locking protection, over-temperature turn-off protection and the like, remote enabling control can be realized by using an EN pin, a PGOOD pin can provide normal output indication of a power supply, and an FB pin can flexibly adjust output voltage.
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