CN204361895U - Drive pressurizer - Google Patents
Drive pressurizer Download PDFInfo
- Publication number
- CN204361895U CN204361895U CN201420745924.XU CN201420745924U CN204361895U CN 204361895 U CN204361895 U CN 204361895U CN 201420745924 U CN201420745924 U CN 201420745924U CN 204361895 U CN204361895 U CN 204361895U
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- voltage
- power tube
- circuit
- voltage stabilizing
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Abstract
The utility model discloses a kind of driving pressurizer, comprise the voltage stabilizing drive circuit of voltage stabilizing circuit and MOS power tube formation, described MOS power tube is the NMOS power tube of 40V, is connected in series boost module between the output of described voltage stabilizing circuit with the grid of the NMOS power tube of 40V.Because the NMOS power tube that have employed high pressure 40V drives, the instantaneous pressure of power output end more than 25V can be resisted, and its underlayer voltage is held with receiving, does not need again to switch underlayer voltage, therefore inverse when connecing without large pulse current.Simultaneously, add boost module in the loop, boost module can be such as 5 times of low voltage control high-tension circuits, adopt 1MHZ oscillator, by 3V boost in voltage to 15V, therefore, the gate terminal voltage of the NMOS tube of high pressure 40V has sufficiently high voltage driven, enables the freely just reverse conducting and do not have threshold value to lose of its power output end and battery-end.
Description
Technical field
The utility model relates to driving voltage stabilizing technique, more particularly relates to a kind of driving pressurizer.
Background technology
In conventional voltage stabilizing circuit, generally all adopt low pressure PMOS power tube to drive, when USB interface 21 is charged from the battery-end 22 of power output end to low pressure PMOS power tube of low pressure PMOS power tube as shown in Figure 1, have peak value when hot plug more than 20V pulse voltage.And for low pressure PMOS power tube, against needing when connecing to change underlayer voltage, having larger pulse current instantaneously in switching and flowing through, as line stray inductance in circuit is comparatively large, also can produces instantaneous pressure and puncture low pressure PMOS power tube.And the loop that low pressure PMOS power tube drives, peripheral limit has movement greatly with load current change, is unfavorable for loop compensation.If adopt conventional NMOS power tube to export, owing to having threshold value loss between the grid of NMOS power tube and its power output end, will the output area of restriction power output end.
Utility model content
Loop is driven only to provide one-way electric power using low pressure PMOS power tube as driving for the routine existed in prior art, as need reverse provide charging path then to need to switch PMOS power tube underlayer voltage and be difficult to high voltage bearing problem, the purpose of this utility model is to provide and a kind ofly drives pressurizer.
For achieving the above object, the utility model adopts following technical scheme:
A kind of driving pressurizer, comprise the voltage stabilizing drive circuit of voltage stabilizing circuit and MOS power tube formation, described MOS power tube is the NMOS power tube of 40V, is connected in series boost module between the output of described voltage stabilizing circuit with the grid of the NMOS power tube of 40V.
Described boost module comprises oscillator, charge pump and low voltage control high-tension circuit, the input of low voltage control high-tension circuit is connected with the output of described voltage stabilizing circuit, and the output of low voltage control high-tension circuit is connected with the grid of the NMOS power tube of described 40V; The input of charge pump is connected with the output of oscillator, and electric charge delivery side of pump is connected with low voltage control high-tension circuit.
As further improvement, the multiplication of voltage number of described charge pump is 5 times.
Described driving pressurizer also comprises charging control circuit, resitstance voltage divider and the diverter switch for switching power supply and charging, the input of described charging control circuit is connected with the positive pole of voltage stabilizing circuit, and the output of charging control circuit is connected with boost module by diverter switch; Power output end and the battery-end of the NMOS power tube of described 40V are connected with one end of resitstance voltage divider respectively by diverter switch, and the other end of resitstance voltage divider is connected with the positive pole of voltage stabilizing circuit; The output of voltage stabilizing circuit is connected with boost module by diverter switch.
Compared with prior art, one of the present utility model is adopted to drive pressurizer, comprise the voltage stabilizing drive circuit of voltage stabilizing circuit and MOS power tube formation, described MOS power tube is the NMOS power tube of 40V, is connected in series boost module between the output of described voltage stabilizing circuit with the grid of the NMOS power tube of 40V.Because the NMOS power tube that have employed high pressure 40V drives, the instantaneous pressure of power output end more than 25V can be resisted, and its underlayer voltage is held with receiving, does not need again to switch underlayer voltage, therefore inverse when connecing without large pulse current.Simultaneously, add boost module in the loop, boost module can be such as 5 times of low voltage control high-tension circuits, adopt 1MHZ oscillator, by 3V boost in voltage to 15V, therefore, the gate terminal voltage of the NMOS tube of high pressure 40V has sufficiently high voltage driven, enables the freely just reverse conducting and do not have threshold value to lose of its power output end and battery-end end.Owing to being driven by 15V grid voltage, the conducting resistance of the NMOS tube of high pressure 40V is greatly reduced, and device size also reduces relatively, the product that make to change products can encapsulate into compact package such as SOT23.
Accompanying drawing explanation
Fig. 1 is the driving loop schematic diagram of the low pressure PMOS power tube of prior art;
Fig. 2 is the circuit theory schematic diagram of the first embodiment of the present utility model;
Fig. 3 is the circuit diagram that Fig. 2 mesolow controls high-tension circuit;
Fig. 4 is the circuit theory schematic diagram of the second embodiment of the present utility model.
Embodiment
The technical solution of the utility model is further illustrated below in conjunction with drawings and Examples.
Refer to the one shown in Fig. 2 and drive pressurizer, comprise the voltage stabilizing drive circuit of power supply stabilization circuit 31 and MOS power tube 32 formation, described MOS power tube 32 is the NMOS power tube of 40V, is connected in series boost module 33 between the output of described voltage stabilizing circuit 31 with the grid of the NMOS power tube of 40V.Boost module 33 comprises oscillator 331,5 multiplication of voltage charge pump 332 and low voltage control high-tension circuit 333, the input of low voltage control high-tension circuit 333 is connected with the output of power supply stabilization circuit 31, and the output of low voltage control high-tension circuit 333 is connected with the grid of the NMOS power tube 32 of described 40V; The input of 5 multiplication of voltage charge pumps 332 is connected with the output of oscillator 331, and the output of 5 multiplication of voltage charge pumps 332 is connected with low voltage control high-tension circuit 333.Shown in Figure 3 again, wherein all metal-oxide-semiconductors are high-voltage MOS pipe.In this circuit, EN, Vin signal is low-voltage signal, and Vdd and Vout is high-voltage signal; In order to ensure that low-voltage simulation and logical signal are successfully passed to high pressure by this module, in circuit, N3 is common source amplifying circuit, after low-voltage analog signal Vin (0 ~ 4V) enters, can be amplified by circuit, its gain amplifier is Gain=gm3*R, and in formula, gm3 is the mutual conductance of N3, and R is resistance.This gain general is all more than 10 times, and therefore the range of signal of Vout is extended to 0 ~ 15V.When low voltage digital signal EN enters circuit, to be changed to example by low level 0V to high level 3.6V: initial state EN is for 0V, then high pressure NMOS power tube N1 opens and high pressure NMOS power tube N2 closes, therefore the grid voltage of high voltage PMOS power tube P2 is pulled to ground because of the unlatching of high pressure NMOS power tube N1, thus high voltage PMOS power tube P2 is opened; Because high voltage PMOS power tube P2 opens, the grid voltage of high voltage PMOS power tube P3 is pulled to high level 15V, and like this, high voltage PMOS power tube P3 is just fully closed; Meanwhile, high voltage PMOS power tube P1 due to grid voltage be that 15V high pressure is closed; And after EN signal becomes 3.6V high level, high pressure NMOS power tube N2 is opened and high pressure NMOS power tube N1 is closed, therefore high voltage PMOS power tube P1 grid voltage is pulled to ground and opens; Like this, high voltage PMOS power tube P2 is closed because grid is set in order to high level 15V; Meanwhile, because high pressure NMOS power tube N2 is opened, the grid of high voltage PMOS power tube P3 pipe is just directly set to ground, and such high voltage PMOS power tube P3 is just opened.Thus low logic voltage level is transmitted smoothly as high voltage logic level.
Described driving pressurizer also comprises charging control circuit 34, resitstance voltage divider 35 and powers and the diverter switch SW1 charged, SW2, SW3 and SW4 for switching, the input of charging control circuit 34 is connected with the positive pole of power supply stabilization circuit 31, and the output of charging control circuit 34 is connected with boost module by diverter switch SW1; Power output end and the battery-end of the NMOS power tube of described 40V are connected with one end of resitstance voltage divider 35 respectively by diverter switch SW3 and SW4, and the other end of resitstance voltage divider 35 is connected with the positive pole of power supply stabilization circuit 31; The output of power supply stabilization circuit 31 is connected with boost module 33 by diverter switch SW2.When needs provide power supply, now charging signals is 0, diverter switch SW1 and SW3 opens and SW2 and SW4 closes, now loop is the high pressure NMOS power tube driving voltage stabilizing circuit of 40V, wherein, PIN1 is the battery-end of the high pressure NMOS power tube of 40V, and PIN2 is the power output end of the high pressure NMOS power tube of 40V, and it exports a stable power supply.When power output end PIN2 voltage fluctuation, resitstance voltage divider 35 detects the voltage on the PIN2 of power output end, and fluctuation signal is transferred to power supply stabilization circuit 31, and power supply stabilization circuit 31 exports the low pressure amplifying signal being less than 5V; Meanwhile, low voltage control high-tension circuit 333 converts this low-voltage signal to high pressure fluctuations signal; Finally, regulate conducting resistance by the high pressure NMOS power tube of 40V and suppress the fluctuation of output voltage to make it stablize; In integrated circuit, oscillator 331 provides fixed frequency for charge pump 332 circuit, the low-tension supply of 3V can be risen to 5 times of 15V, thus provides high voltage source for this level shifter circuit.When needs reverse charging, now charging signals signal be 1, diverter switch SW1 and SW3 close and SW2 and SW4 opens, now loop is charging and voltage stabilizing circuit, by the reverse driving of high pressure NMOS power tube of 40V, wherein, power output end PIN2 connects charging circuit input power.The sense of current is reverse, but control principle is identical with when providing power supply, no longer repeats at this.
Those of ordinary skill in the art will be appreciated that, above embodiment is only used to the purpose of this utility model is described, and be not used as restriction of the present utility model, as long as in essential scope of the present utility model, the change of the above embodiment, modification all will be dropped in the scope of claim of the present utility model.
Claims (4)
1. a driving pressurizer, comprise the voltage stabilizing drive circuit of voltage stabilizing circuit and MOS power tube formation, it is characterized in that: described MOS power tube is the NMOS power tube of 40V, is connected in series boost module between the output of described voltage stabilizing circuit with the grid of the NMOS power tube of 40V.
2. driving pressurizer according to claim 1, it is characterized in that: described boost module comprises oscillator, charge pump and low voltage control high-tension circuit, the input of low voltage control high-tension circuit is connected with the output of described voltage stabilizing circuit, and the output of low voltage control high-tension circuit is connected with the grid of the NMOS power tube of described 40V; The input of charge pump is connected with the output of oscillator, and electric charge delivery side of pump is connected with low voltage control high-tension circuit.
3. driving pressurizer according to claim 2, is characterized in that: the multiplication of voltage number of described charge pump is 5 times.
4. the driving pressurizer according to any one of claim 1-3, it is characterized in that: described driving pressurizer also comprises charging control circuit, resitstance voltage divider and the diverter switch for switching power supply and charging, the input of described charging control circuit is connected with the positive pole of voltage stabilizing circuit, and the output of charging control circuit is connected with boost module by diverter switch; Power output end and the battery-end of the NMOS power tube of described 40V are connected with one end of resitstance voltage divider respectively by diverter switch, and the other end of resitstance voltage divider is connected with the positive pole of voltage stabilizing circuit; The output of voltage stabilizing circuit is connected with boost module by diverter switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420745924.XU CN204361895U (en) | 2014-12-02 | 2014-12-02 | Drive pressurizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420745924.XU CN204361895U (en) | 2014-12-02 | 2014-12-02 | Drive pressurizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204361895U true CN204361895U (en) | 2015-05-27 |
Family
ID=53263341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420745924.XU Expired - Fee Related CN204361895U (en) | 2014-12-02 | 2014-12-02 | Drive pressurizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204361895U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105183067A (en) * | 2015-08-05 | 2015-12-23 | 矽恩微电子(厦门)有限公司 | High voltage low dropout regulator (LDO) using charge pump |
| CN110063001A (en) * | 2016-07-06 | 2019-07-26 | 谷歌有限责任公司 | Quickly charging battery system |
| CN113014077A (en) * | 2021-03-30 | 2021-06-22 | 国硅集成电路技术(无锡)有限公司 | High-voltage PN bridge gate driving circuit |
| CN115967271A (en) * | 2023-03-16 | 2023-04-14 | 长沙泰科阳微电子有限公司 | Charge pump circuit and equipment capable of adjusting voltage |
-
2014
- 2014-12-02 CN CN201420745924.XU patent/CN204361895U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105183067A (en) * | 2015-08-05 | 2015-12-23 | 矽恩微电子(厦门)有限公司 | High voltage low dropout regulator (LDO) using charge pump |
| CN110063001A (en) * | 2016-07-06 | 2019-07-26 | 谷歌有限责任公司 | Quickly charging battery system |
| CN110063001B (en) * | 2016-07-06 | 2021-02-12 | 谷歌有限责任公司 | Quick charging system for battery |
| CN113014077A (en) * | 2021-03-30 | 2021-06-22 | 国硅集成电路技术(无锡)有限公司 | High-voltage PN bridge gate driving circuit |
| CN115967271A (en) * | 2023-03-16 | 2023-04-14 | 长沙泰科阳微电子有限公司 | Charge pump circuit and equipment capable of adjusting voltage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150527 Termination date: 20151202 |
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| EXPY | Termination of patent right or utility model |