3results about How to "Reduce ripple voltage" patented technology

The invention discloses a low-cost dynamic power control temperature control system based on a PD protocol, which belongs to the technical field of x, and comprises a power supply module used for power supply work of the whole equipment, and a voltage regulation module comprising a PD protocol chip and an LDO (low dropout regulator), the PD protocol chip and the input end of the LDO (low dropout regulator) are connected with the power supply module through the power harness. The TEC module has the beneficial effects that accurate voltage regulation is realized at a power supply source through the PD protocol chip, continuous and stable direct-current voltage is loaded at two ends of the TEC module instead of a PWM (Pulse Width Modulation) high-power switching signal in the prior art, suppression is performed from the root of electromagnetic radiation generation, EMC rectification components such as an electromagnetic shielding cover, a common-mode inductor and a filter capacitor do not need to be additionally arranged, and the cost is reduced. Therefore, the harsh electromagnetic compatibility test requirement can be easily met, the compliance cost and the design period of the product are greatly reduced, and the long-standing EMC design difficulty in the industry is solved.

The application discloses a voltage stabilizing and adjusting circuit and a servo driver device. The voltage stabilizing and adjusting circuit comprises a rectifier bridge, an inverter circuit, a bus capacitor, a first inductor, a first capacitor, a first diode, a switching adjusting circuit and a control circuit. The switching adjusting circuit is arranged between the inverter circuit and the rectifier bridge and is used for controlling the input voltage of a motor. The control circuit is connected with the motor and the switching adjusting circuit respectively. The control circuit is used for acquiring a first voltage and a second voltage, identifying parameters of the motor and determining a third voltage based on the parameters of the motor. The control circuit is used for controlling the voltage stabilizing and adjusting circuit to be in a step-up state or a step-down state through the switching adjusting circuit based on the third voltage, the first voltage and the second voltage, so as to control the input voltage of the motor. In the above manner, the charging and discharging pressure of the bus capacitor is reduced, the ripple voltage of the bus capacitor is reduced, the service life of the bus capacitor is prolonged, the size of the servo driver is reduced and the use convenience is improved.

The invention discloses a high-power low-ripple high-efficiency hybrid structure linear power supply and a working method, and relates to the technical field of electronics. Comprising a reference source module, a power operational amplifier module, an MOS (Metal Oxide Semiconductor) linear voltage regulation module, a voltage and power judgment module, and a first switch module and a second switch module which are used for gating the power operational amplifier module or the MOS linear voltage regulation module. The reference source module serves as a reference circuit and is used for outputting a reference voltage signal to the common end of the first switch module and controlling the reference voltage signal to be output to the power operational amplifier module or the MOS linear voltage regulating module through the first switch module. According to the invention, the optimal working mode is dynamically selected in a full-power range, the output characteristics of high precision, low ripple and high efficiency are realized, the overall energy efficiency and practicability of the power supply are effectively improved, the power consumption and temperature rise of the adjusting tube can be obviously reduced during high-power or low-dropout output, the long-term operation reliability of the power supply is ensured, and the heat dissipation design is simplified.