Abstract:
An integrated driving module includes an oscillator, a PWM unit, a soft start controller, a first driver, and a second driver. The oscillator is connected to a voltage input end and generates an oscillating signal. The PWM unit receives the oscillating signal and generates a first driving control signal and a second driving control signal that are respectively anti-phased. The first driver outputs a first driving output signal to a first output end according to the first driving control signal. The second driver outputs the second driving output signal to a second output end according to the second driving control signal. The integrated driving module only has four connection ends for external connection to provide the two anti-phase driving output signals, such that the circuit design and connection of the primary side of the transformer is greatly simplified. The design limitation and manufacturing cost can be both lowered.
Abstract:
A redundant power supply apparatus includes at least two power inlets, at least two power supply units, and a common component. Each power inlet is connected to an AC power source. Each power supply unit has an input side and the at least two power supply units having a common output side, each input side is connected to the power inlet, and each power supply unit is configured to convert the AC power source into a DC power source. The common component is connected at the common output side and configured to receive DC power sources. Accordingly, the redundant power supply apparatus is provided to improve reliability of redundant operations between multiple external power sources without using mechanical switches.
Abstract:
A feed forward controlling circuit is used to perform a feed forward controlling method to restrain ripple of the output voltage in a power converter. The power converter is controlled by a control signal outputted from an output terminal of a controller. The method includes steps of: receiving an output voltage from an output terminal of a voltage converter; attenuating the output voltage to generate an electrical signal; acquiring a DC signal from the electrical signal; and obtaining a ripple compensation signal in accordance with the electrical signal and the DC signal to output to an output terminal of a controller. The output terminal of the controller outputs a control signal to control the power converter.
Abstract:
An irregularity detection device for a power switch determines if a temperature-dependent resistance on a current path of the power switch is abnormal according to if a voltage on the current path is greater than or equal to a configuration value when the power switch is turned on, and generates an irregularity alarm associated with the power switch based on the determination result.
Abstract:
The present invention relates to a power supply with output protection and a control method of the power supply. The invention mainly provides a pre-protection value lower than a default over-current protection value. When a present output current of the power supply is higher than or equal to the pre-protection value and is lower than the over-current protection value, the method firstly determines whether the power supply has abnormal conditions. When the power supply has abnormal conditions, the method can automatically provide or stop providing a working voltage to a load. When the present output current is further higher than or equal to the over-current protection value, the method takes an over-current protection action. By multi-level monitoring of the current values, the invention properly provides an over-current protection.
Abstract:
A power supply having ORing MOSFETs mounts a voltage regulating unit between a main power module and an auxiliary power module of a secondary side of the power supply. The voltage regulating unit regulates a control voltage received by a driving unit, such that a voltage difference between a gate voltage and a source voltage of one of the ORing MOSFETs can be less than a rated voltage threshold for avoiding damaging the one ORing MOSFET.
Abstract:
A power plug with thermal insulation-function has an output connector having a wire connecting end, an internal module, a housing, and an external module. The internal module has an outer surface and encloses the wire connecting end of the output connector. A plurality of recesses are concavely formed on the outer surface of the internal module. The housing encloses the outer surface of the internal module, wherein a plurality of gas cells are formed between the housing and each of the plurality of recesses. The external module encloses the housing and the internal module. Air can be stored in the gas cells for insulating thermal conduction from inside to outside. Heat can hardly transfer from the internal module to the external module to dissipate via the outer surface of the external module, thereby lowering the surface temperature of the external module to avoid burning the user.
Abstract:
The power supply device with multiple outputs includes two output ports, a power converting module with two power output ends, and two switching modules connected among the two power output ends and the two output ports. The output power from the two power output ends can be independently allocated to either one or two of the two second output ports. When one of the output ports requests for a demand power, the power supply device is able to determine which one or both of the power output ends to output power to the output port, reaching a better power allocation efficiency.
Abstract:
A power supply device with improved current balancing mechanism includes a power supply module, and a current detecting module detecting the output current to generate a sample voltage. A compensation voltage is provided that is in superposition with the sample voltage to synthesizes a corrected sample voltage, and a current mirror unit receives the corrected sample voltage at a first end. A positive input end of a comparator unit is connected to a second end of the current mirror unit, and is connected to the first end through a voltage divider, while the comparator unit outputs the current share voltage under negative feedback control. The current share output is corrected by compensating the sampling voltage and reflecting it by a current mirror with a certain ratio, the inconvenience of manually adjusting variable resistor, or the problem of temperature influenced BJT and MOSFET, or phase delay of digital sampling is solved.