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PNP BJT combined capacitor charge-discharge controller with wide operating voltage range

A technology of working voltage range and combined capacitance, applied in control/regulation systems, instruments, electrical components, etc., can solve the problems of miniaturization and high efficiency of converters, occupying space, increasing losses, etc.

Active Publication Date: 2020-01-31
浙江日风电气股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, both the independent auxiliary power supply and the non-independent auxiliary power supply branch need to occupy a certain space, and at the same time, it will increase the loss and reduce the reliability, which will have a negative impact on the miniaturization and high efficiency of the entire converter.

Method used

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  • PNP BJT combined capacitor charge-discharge controller with wide operating voltage range
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  • PNP BJT combined capacitor charge-discharge controller with wide operating voltage range

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] refer to figure 1 and Figure 4 , a PNP BJT combined capacitor charging and discharging controller with a wide operating voltage range, including the port V cc , port V ss and port Out, also includes PNP type BJT tube Q 1 , Diode D 1 , capacitance C 1 , resistance R 1 , resistance R 2 , controlled current source and output unit, the output unit includes port a and port b, PNP type BJT tube Q 1 the emitter simultaneously with the resistor R 2 One end of the capacitor C 1 One end of the diode D 1 the cathode and the port V cc Connected, PNP type BJT tube Q 1 base simultaneously with resistor R 2 The other end of the diode D 1 The anode and the first port of the controlled current source are connected, and the PNP type BJT tube Q 1 collector simultaneously with capacitor C 1 The other end of the resistor R 1 One end of the output unit is connected to the port a of the output unit, the port b of the output unit is connected to the port Out, and the resistanc...

Embodiment 2

[0056] refer to figure 2 and Figure 4 , a PNP BJT combined capacitor charging and discharging controller with a wide operating voltage range, its output unit includes an NPN type BJT tube Q b1 , PNP type BJT tube Q b2 , resistance R b1 , resistance R b2 and diode D b1 , NPN type BJT tube Q b1 collector with port V cc Connected, NPN type BJT tube Q b1 The base of the output unit is simultaneously connected with the port a of the output unit and the PNP type BJT tube Q b2 The base is connected, PNP type BJT tube Q b2 collector with port V ss Connected, NPN type BJT tube Q b1 The emitter of the PNP type BJT tube Q b2 The emitter, resistor R b1 One end of the resistor R b2 Connected to one end of the resistor R b2 The other end of the diode D b1 connected to the cathode of the diode D b1 The anode of the resistor Rb1 is connected to the other end of the resistor Rb1 and port b at the same time.

[0057] The rest of embodiment 2 is the same as embodiment 1.

[0...

Embodiment 3

[0066] refer to image 3 and Figure 4 , a PNP BJT combined capacitor charging and discharging controller with a wide operating voltage range, its output unit includes a resistor R c1 and diode D c1 , resistor R c1One end of the diode D c1 The cathode is connected to port a, the resistor R c1 The other end of the diode D c1 The anode is connected to port b.

[0067] The rest of the embodiment 3 is the same as the embodiment 2, but the driving ability is weaker than that of the embodiment 2.

[0068] refer to Figure 11 , applying the controller to a step-down converter. In addition to the controller, the converter also includes an inductor L k1 , Diode D k5 , capacitance C k1 , Diode D k1 , Diode D k2 , PNP type BJT tube Q k1 , resistance R k1 , Diode D k3 , PNP type BJT tube Q k2 , resistance R k2 , Diode D k4 , inductance L k2 , capacitance C k2 , resistance R k3 , resistance R k4 and capacitance C k3 , the positive terminal of the DC power supply is ...

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Abstract

The invention discloses a PNP BJT combined capacitor charge-discharge type controller with wide operating voltage range. The controller comprises a port Vcc, a port Vss and a port Out and also comprises a PNP BJT tube Q1, a diode D1, a capacitor C1, a resistor R1, a resistor R2, a controlled current source and an output unit. The controlled current source can be utilized to change the charging anddischarging speed and depth of the capacitor C1 to achieve the purpose of adjusting the switching period and the duty ratio of the control signal. The controller has the advantages of simple structure, favorable integration and wide operating voltage range and can be matched with P-channel IGBT tube, P-channel MOS tube, PNP BJT tube and the like on the high-side of the converter and is especiallysuitable for application occasions with higher input voltage.

Description

technical field [0001] The invention relates to a controller, which is based on the charging and discharging mechanism of PNP BJT combined capacitors. The controller can work normally in a wide input voltage range, and has the ability to drive semiconductor power devices, and can be connected with the high voltage side of the converter. (High-Side) PNP type BJT tube, P-channel MOS tube, P-channel IGBT tube, etc., especially suitable for applications with higher input voltage. Background technique [0002] For the sake of standardization, the operating voltage range of most existing commercially available controllers is basically in the range of tens of volts to tens of volts. When the input voltage range of the converter is inconsistent with the working voltage range of the controller, most of them will use an independent auxiliary power supply or a non-independent auxiliary power supply branch to supply power to the controller to ensure its normal operation. However, both ...

Claims

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Application Information

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IPC IPC(8): H02M3/158H02M1/08
CPCH02M1/08H02M3/158
Inventor 卢钢陈怡
Owner 浙江日风电气股份有限公司
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