A non-monotonic circuit for preventing the working state signal of the step-down regulation circuit
A circuit and signal technology, which is applied in the field of circuits that prevent the working state signal of the step-down regulator circuit from being non-monotonic, can solve the problems of non-monotonic working signal, etc., and achieve the effect of significant progress and outstanding substantive characteristics.
Active Publication Date: 2019-12-17
INSPUR SUZHOU INTELLIGENT TECH CO LTD
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Problems solved by technology
[0003] The purpose of the present invention is to address the deficiencies in the prior art, and provide a non-monotonic circuit for preventing the working state signal of the step-down regulator circuit, which solves the non-monotonic problem in the rising and falling process of the working state signal, and is used Electronic equipment for step-down regulation circuit to solve the problem of non-monotonic working signal
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[0010] In order to clearly illustrate the technical features of the solution, the solution will be described below through a specific implementation mode combined with the accompanying drawings.
[0011] As can be seen from the accompanying drawings, the anti-monotonic circuit of the working state signal of the step-down regulating circuit of this program includes a control chip IC, and the control chip IC is connected with the signal rising voltage stabilization circuit 1, the bootstrap circuit 2, and the signal falling voltage respectively. The stabilization circuit 3 is connected. The signal rising voltage stabilization circuit includes resistor R1, diode D1, and capacitor C1. The cathode of diode D1 is connected to the PGOOD pin of the control chip IC. The anode of diode D1 is connected to +12V voltage through resistor R1. The foot is grounded. The bootstrap circuit includes a diode D2 and a capacitor C2, the cathode of the diode D2 is connected to the Vout pin of the vol...
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The present invention provides a non-monotonic circuit for preventing the working state signal of a step-down regulating circuit, including a control chip IC, and the control chip IC is respectively connected to a signal rising voltage stabilizing circuit 1, a bootstrap circuit 2, and a signal falling voltage stabilizing circuit 3 . By isolating the input voltage, the use of capacitive energy storage fundamentally reduces the possibility of signal fluctuations with the pull-up voltage, and in the process of falling, the bootstrap circuit is used to output a steady-point voltage to drive the pull-down element in the pull-down circuit, so that The working status signal is not subject to external interference, and the output is low level continuously and stably.
Description
technical field [0001] The invention relates to a step-down regulation circuit, especially a circuit used to prevent non-monotonous working state signal of the step-down regulation circuit. Background technique [0002] In the prior art, it is known that in the existing step-down regulation circuit, the signal interface can only output high or low impedance due to the working state of the control chip. Therefore, it is directly connected to a high voltage through a current-limiting resistor to obtain the ability to output high-level and low-level signals. This method causes the signal to fluctuate with the fluctuation of the high voltage during the rising process, and during the falling process, because the operating voltage of the control chip is unstable, especially when the operating voltage of the control chip drops rapidly, the control chip will be very unstable. Stop working quickly, lose control ability, and the connected high voltage still continues, causing the sig...
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IPC IPC(8): H02M1/00
CPCH02M1/00H02M1/0003H02M1/0006
Inventor 曹伟华
Owner INSPUR SUZHOU INTELLIGENT TECH CO LTD