Booster circuit and control method thereof
A boost circuit and control method technology, applied in the electronic field, can solve the problems of unstable boost function, inability to provide accurate and stable output voltage, and inability to adapt to large-scale changes in input voltage, so as to achieve high output voltage and current stability and high efficiency Effect
Active Publication Date: 2018-04-20
浙江爱客能源设备有限公司
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Problems solved by technology
[0003] However, this conventional boost circuit structure cannot adapt to a wide range of changes in the input voltage. When the input voltage is greater than the preset value, it cannot provide an accurate and stable output voltage. In principle, there is an upper limit of the input voltage; in addition, in practice In use, in order to be able to adapt to different high and low voltages, two-stage booster circuits are often used. One stage is a low-threshold MOS transistor as a switching device to handle low input voltage, and the other stage is a high-threshold MOS transistor as a switching element to handle high Input voltage, the two-stage boost circuit will affect each other during work, resulting in unstable boost function when the input voltage is low
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[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0023] Such as figure 1 As shown, a boost circuit and its control method include a filter module 101 , a primary boost circuit module 102 , a secondary boost circuit module 103 , and a control module 104 .
[0024] The rectified voltage connected from the mains or other sources is often accompanied by unstable clutter. In order to ensure the reliable operation of the booster circuit, the filter module 101 is added to filter out the ripple of the rectified input voltage; the one Stage boost circuit module 102: mainly aimed at lower input voltage, when the input voltage is lower than the preset input voltage, the voltage is adjusted through low-threshold components and output; the second stage b...
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The invention discloses a booster circuit and a control method thereof. The booster circuit comprises a filter module, a primary booster circuit module, a secondary booster circuit module, and a control module, wherein the filter module is used for filtering ripple wave of rectifier input voltage; the primary booster circuit module is used for boosting the input voltage to the required output voltage; the secondary booster circuit module is used for adjusting the output voltage of the primary booster circuit so as to guarantee the stable output of the voltage; and the control module is connected with the primary booster circuit module and the secondary booster circuit module, and used for controlling the on / off of a circuit switch, thereby accomplishing the boosting work. The invention provides a booster circuit with extensive applicability and large boosting range.
Description
technical field [0001] The present invention relates to the field of electronic technology, more specifically, it relates to a voltage boosting circuit. Background technique [0002] The booster circuit can boost the lower input DC voltage to the required higher voltage, because the voltage range of electronic components varies widely, so the booster circuit is widely used in electronic equipment. The general boost circuit on the market adopts the control switch tube to turn on and turn off to control the boost conversion. By controlling the turn-on and turn-off of the switch tube, the energy storage and energy release of the inductor and capacitor are controlled, and an output voltage with a voltage value greater than the input voltage is obtained at the output terminal. This kind of boost circuit structure generally produces two working states. The first is that the input voltage is less than the predetermined input voltage, and the predetermined output voltage can be obt...
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Login to View More IPC IPC(8): H02M3/158H02M1/14
CPCH02M1/14H02M3/158
Inventor 崔佳民姚玮
Owner 浙江爱客能源设备有限公司