5results about How to "Small output ripple" patented technology

The utility model relates to the technical field of start-stop controllers, in particular to an automatic start-stop controller for a motorcycle. The controller comprises a shell and a circuit board fixedly connected with the shell, a main chip, an MOS bridge and a driver which are connected are arranged on the circuit board, heat dissipation elements are connected to the side, away from the circuit board, of the shell, the heat dissipation elements are distributed on the shell at intervals, a heat dissipation boss is arranged in the shell, a gap is formed between the heat dissipation boss and the circuit board, and the heat dissipation boss corresponds to the main chip in position. Compared with the prior art, the start-stop controller has the advantages that the heat dissipation effect of the start-stop controller is improved, the service life of the chip is further prolonged, and the like.

This invention provides a multi-phase output clock circuit and method for high-power power supply management. Flip-flop FF0 receives the clock signal CLK generated by the system's internal oscillator and divides CLK by two to obtain clock signal CLK1. Flip-flops FF1, FF2, and FF3 form a state machine structure unit, which divides CLK1 by six to output three phase-shifted clock signals. The clock input of flip-flop FF4 is connected to the clock signal CLK1N obtained from CLK1 via an inverter, and is used to output another phase-shifted clock signal. The generation of the multi-phase clock can be used as the operating clock for multiple parallel converters. In this form, each converter handles a relatively small current, reducing output ripple, power loss, and efficiency, while also lowering costs.

The utility model relates to a kind of low-power low-cost power supply circuit and conference system host power, comprising: input processing module, input filter module, control module, push-pull drive module, voltage conversion module and voltage output module;The input end of input processing module is connected to external power supply, the input end of input processing module, input filter module, control module and voltage conversion module are connected to the output end, push-pull drive module is connected with the input end of voltage conversion module and the drive end of control module respectively, the input end of voltage conversion module is connected with the output end of voltage output module, and the output end of voltage output module outputs multiple groups of power supply signals.The power supply circuit of the utility model can significantly reduce electromagnetic interference, reduce output ripple, improve power stability and reliability, and can simplify circuit design, voltage conversion efficiency is high, and can meet the design requirements of conference host.

The application provides an adaptive control circuit of a switching converter and the switching converter. The adaptive control circuit performs error operation on an output feedback voltage and a first reference voltage to obtain a compensation signal, performs error amplification on a current sampling signal representing an average current of an inductor and the compensation signal to obtain a second error signal, compares a first ramp signal with a first slope and the second error signal to generate a first comparison signal, compares a second ramp signal with a second slope and a second reference voltage to generate a second comparison signal, and compares a third ramp signal with a third reference voltage to generate a third comparison signal. The first comparison signal, the second comparison signal and the third comparison signal are used to control the switching state of a main switch. The application makes the switching period of the main switch change with the load of the switching converter.

The application provides a power supply control system and method, and a power supply, and relates to the technical field of power electronics. The system comprises: a sampling feedback module for obtaining an operating parameter feedback signal of a main circuit of the power supply; a digital control module for generating an analog reference signal according to a target output parameter and the output parameter feedback signal; an analog control module comprising an output parameter outer loop, an inductance current middle loop and a peak current inner loop, for generating a wave generation control signal according to the analog reference signal and the operating parameter feedback signal; and a drive signal generation module for generating a drive signal for controlling a power switch tube in the main circuit of the power supply according to the wave generation control signal. The application can take into account the control flexibility, output precision, low output ripple, dynamic response performance and current limiting protection reliability of the power supply.