RCC circuit with delay starting function

Abstract

The invention discloses an RCC circuit with a delay starting function. The actual similarity with the present common RCC circuit is that the RCC circuit comprises a starting circuit, a power conversion circuit, a drive circuit, a switch control circuit and an output ballast filter circuit. The RRC circuit has the advantages that the RCC circuit is provided with a delay circuit; the delay circuit is formed by a voltage-regulator tube diode D1, a resistor R2 and a capacitor C1; one end of the start resistor R1, one end of the delay resistor R2 and a cathode of the voltage-regulator tube diode D1 are connected to each other; the other end of the resistor R1 is connected to an input positive line; the other end of the delay resistor R2 is connected to the capacitor C1; the other end of the capacitor C1 is connected to an input return wire; and an anode of the voltage-regulator tube diode D1 is connected to a base of a switch triode Q1. Through setting the delay starting circuit, a voltage threshold for starting of the RCC circuit is improved, so that the input surge current is reduced.

Description

technical field [0001] The invention belongs to the field of power electronics and relates to an RCC circuit with a delay start function. Background technique [0002] RCC is the abbreviation of Ringing Choke Convertor. It is named from its basic action and its meaning. It is also called a self-excited flyback converter. With its simple circuit structure and low cost, it is used in the auxiliary power supply field of aerospace products. It has a broad application space, especially it is widely used as an auxiliary power supply circuit by the DC-DC module pulse width modulator of the spacecraft. At present, more and more aerospace products have more and more requirements for the monotonicity of the minimum busbar operating voltage and output voltage. High, but the existing solution of pulse width debugger plus soft-start circuit will cause the output voltage to be non-monotonic, which may cause the chip at the back end to work abnormally when it starts. Contents of the inve...

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Problems solved by technology

[0002] RCC is the abbreviation of Ringing Choke Convertor. It is named from its basic action and its meaning. It is also called a self-excited flyback converter. With its simple circuit structure and low cost, it is used in the auxiliary power supply field of aerospace products. It has a broad application space, especially it is widely used as an auxiliary power supply circuit by the DC-DC module pulse width modulator of the spacecraft. At present, more and more aerospace products have more and more requirements for the monotonicity of the minimum busbar operating voltage and output voltage. High, but the solution of the existing pulse width debugger plus a soft-start circuit will cause the output voltage to be non-monotonic, which may cause the chip at the back end to work abnormally at startup

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