CN201947216U - Drive integrated circuit of a DC motor of a toy lock set - Google Patents
Drive integrated circuit of a DC motor of a toy lock set Download PDFInfo
- Publication number
- CN201947216U CN201947216U CN2011200736178U CN201120073617U CN201947216U CN 201947216 U CN201947216 U CN 201947216U CN 2011200736178 U CN2011200736178 U CN 2011200736178U CN 201120073617 U CN201120073617 U CN 201120073617U CN 201947216 U CN201947216 U CN 201947216U
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Abstract
A drive integrated circuit of a DC motor of a toy lock set includes a control drive circuit and an H bridge-like output tube, a standard SOP8 or DIP8's plastic capsulation, in which, the control drive circuit contains two inputs (1A) and (1B) for receiving micro-control signals and the output of which is connected with the output tube of the H bridge-like structure composing 4 dynatrons (NPN4), (NPN5), (NPN8) and (NPN9), the base electrode is connected with the output of the drive circuit and the emitting pole of (NPN9) is parallel to the collector of (NPN8), the emitting pole of (NPN5) is parallel to the collector (\of (NPN4) to form outputs (OA) and (OB) of a DC motor drive IC circuit of a toy lock set, which solves the problem of high demand on input control signals and large area of occupation by the same kinds of products.
Description
Technical field
The utility model relates to a kind of driving circuit structure.
Background technology
Toy lockset motion structure on the market all need adopt direct current machine to drive now, and the direct current machine that a big chunk toy lockset is used need have the rotating function, and what generally adopt is H bridge drive circuit (as shown in Figure 1 and Figure 2).The direct current motor drive circuit used of toy lockset adopts discrete device to realize mostly in the market, there is following shortcoming in these discrete device schemes: 1, this structure is had relatively high expectations to input control signal, input signal IA, IB forbid appearing as simultaneously high situation, otherwise the path of power supply to ground will appear, with circuit burnout, serious consequence appears; 2, in order to realize the rotating function of direct current machine, each direct current machine need adopt 4 triodes and some resistance to realize driving to direct current machine at least, and its shared PCB area is very big, and the device solder joint much to process fraction defective also higher.
The utility model content
The purpose of this utility model provides the direct current machine drive integrated circult that a kind of toy lockset is used.The utility model has solved existing like product existence input control signal is required height, adopts a plurality of electronic components that direct current machine is driven the big problem of area occupied.
Direct current machine drive integrated circult of the present utility model comprises control Driver Circuit and H bridge architecture efferent duct; Control Driver Circuit has two the input IA and the IB that receive the microcontroller signal, and the output of control Driver Circuit connects H bridge architecture efferent duct; Described H bridge architecture efferent duct is made of four triode NPN4, NPN5, NPN8, NPN9, the base stage of triode NPN5, NPN4, NPN9 and NPN8 is connected the output of control Driver Circuit respectively, (NPN5) emitter is with collector electrode (NPN4) and connect the output (OB) that constitutes this toy (lockset) direct current machine drive integrated circult, connects the input of toy direct current machine (M); The collector electrode of the emitter of triode (NPN9) and triode (NPN8) also connects the output (OA) that constitutes this toy direct current machine drive integrated circult, connects another input of toy direct current machine (M).
The utility model proposes a kind of circuit, H bridge-type Drive Structure is integrated on the chip piece, and increase control circuit is arranged,, effectively protected circuit even under input signal be high situation simultaneously, the path of power supply also can not occur to ground; Control circuit can also effectively suppress the situation that the common-mode conducting appears in when input signal switches power tube, can effectively reduce circuit loss; Can effectively suppress the reverse breakdown voltage pulse that inductive load brings; Prevent that effectively static from causing damage to chip; This Chip Packaging greatly reduces the cost and the circuit board processed complex degree of circuit control panel in the Plastic Package of the SOP8 of a standard or DIP8, improved reliability.
Description of drawings
Fig. 1 is H bridge-type discrete device drive circuit commonly used in the background technology (contain 4 power tubes, wherein NPN pipe, PNP manage available corresponding N metal-oxide-semiconductor, PMOS manages replacement);
Fig. 2 is H bridge-type discrete device drive circuit commonly used in the background technology (contain 6 power tubes, wherein NPN pipe, PNP manage available corresponding N metal-oxide-semiconductor, PMOS manages replacement);
Fig. 3 is a drive circuit built-in function block diagram;
Fig. 4 is the drive circuit internal circuit diagram;
Fig. 5 is drive circuit input and output logic diagrams.
Embodiment
Below in conjunction with accompanying drawing and with illustrated embodiments the utility model is done detailed explanation.
Toy lockset direct current machine drive integrated circult comprises control Driver Circuit and H bridge architecture efferent duct; Control Driver Circuit has two the input IA and the IB that receive the microcontroller signal, and the output of control Driver Circuit connects H bridge architecture efferent duct; Described H bridge architecture efferent duct is made of four triode NPN4, NPN5, NPN8, NPN9, the base stage of triode NPN5, NPN4, NPN9 and NPN8 is connected the output of control Driver Circuit respectively, (NPN5) emitter is with collector electrode (NPN4) and connect the output (OB) that constitutes this toy (lockset) direct current machine drive integrated circult, connects the input of toy (lockset) direct current machine (M); The collector electrode of the emitter of triode (NPN9) and triode (NPN8) also connects the output (OA) that constitutes this toy (lockset) direct current machine drive integrated circult, connects another input of toy (lockset) direct current machine (M).Said chip is encapsulated in the Plastic Package of the SOP8 of a standard or DIP8.
Direct current machine drive integrated circult of the present utility model by highly integrated minimizing peripheral component number, increases controlled function, has three kinds of output states: just change, counter-rotating and high-impedance state, functional block diagram as shown in Figure 3.The monolithic H bridge-type direct current motor drive circuit that the utility model is carried has following characteristics: 1, H bridge-type Drive Structure is integrated on the chip piece, and increasing has control circuit, even under input signal is high situation simultaneously, the path of power ground also can not occur, effectively protect circuit; 2, control circuit can also effectively suppress the situation that the common-mode conducting appears in when input signal switches power tube, can effectively reduce circuit loss; 3, the design of power output tube portion has clamping diode, can effectively suppress the reverse breakdown voltage pulse that inductive load brings; 4, in the circuit input end design esd protection structure is arranged, prevent that effectively static from causing damage to chip; 5, this Chip Packaging greatly reduces the cost and the circuit board processed complex degree of circuit control panel in the Plastic Package of the SOP8 of a standard or DIP8, has improved reliability simultaneously greatly.
The compatible TTL/CMOS level of this drive integrated circult input has good anti-interference; This circuit possesses bigger current driving ability, and every passage can be by the continuous current of 750～800mA, and the peak current ability can reach 1.0～2.0A; Built-in clamp diode can discharge the reverse impact electric current of inductive load.IA, IB receive the control signal of microcontroller input, drive H bridge architecture efferent duct through control Driver Circuit, and H bridge architecture efferent duct is made of power tube N1, N2, N3, N4.OA, OB are output signal, in order to drive direct current machine.
The logical relation of IA, IB and OA, OB as shown in Figure 5,
The specific implementation circuit as shown in Figure 4.When input signal IA=L, IB=L, transistor NPN1, NPN6, NPN7, NPN12 turn-off, transistor PNP1, PNP4 base stage are that high potential is in off state, thereby make transistor NPN2, NPN3, NPN10, NPN11 also be in off state, and output signal OA, OB are high-impedance state; When input signal IA=H, IB=H, transistor NPN6, NPN7 conducting drag down 2 current potentials of A, B, and power transistor NPN4, NPN8 turn-off, and output signal OA, OB are high-impedance state; When input signal IA=H, IB=L, NPN7 manages shutoff, and B point current potential is not had influence.The conducting of NPN6 pipe drags down A point current potential, and NPN8 manages shutoff.Because IB=L, the C point is an electronegative potential, and NPN10 manages shutoff, and the Darlington transistor that PNP2, NPN5 constitute turn-offs.Input IA=H, then the D point is a high potential, and NPN2, NPN3 manage conducting, and driving N PN4 pipe, PNP3 pipe and the conducting of NPN9 pipe when being connected to direct current machine M between two end points of OA, OB, driving direct current machine and rotate, and current direction is shown in arrow among the figure 1; On the contrary, when input signal IA=L, IB=H, current direction drives direct current machine M and rotates in the opposite direction shown in arrow among the figure 2.By the change of input signal, realize control to the positive and negative dress of direct current machine.
This circuit has the common-mode of preventing conducting function, and for example when input signal IA=H, IB=L, the path that NPN9, NPN4 form drives direct current machine and rotates.When input signal switches moment to IA=L, IB=H, the IB signal drags down B point current potential fast by NPN7, the NPN4 pipe is turn-offed, make the NPN5 conducting by control C point current potential again, prevented that NPN5 and NPN4 are in conducting state simultaneously, the short circuit of power supply occur, prevent that power supply from damaging, and also effectively reduces the loss of power when signal switches simultaneously to ground.
Because direct current machine inside is coil, belongs to inductive load, when input signal switches fast, the direct current machine coil current changes direction fast will produce voltage overshoot.This circuit indoor design has two clamping diode D3, D4, utilizes the forward conduction voltage drop of diode to carry out clamper, avoids occurring the instantaneous voltage overshoot, thereby protects whole drive integrated circult chip.
This circuit has esd protection diode D1, D2, D5, D6 in the input design, can effectively prevent the electrostatic protection chip.
Above embodiment is more preferably embodiment a kind of of the utility model, and the common variation that those skilled in the art carry out in the technical program scope and replacing should be included in the protection range of the present utility model.
Claims (2)
1. toy lockset direct current machine drive integrated circult is characterized in that, comprises control Driver Circuit and H bridge architecture efferent duct; Control Driver Circuit has two the input IA and the IB that receive the microcontroller signal, and the output of control Driver Circuit connects H bridge architecture efferent duct; Described H bridge architecture efferent duct is made of four triode NPN4, NPN5, NPN8, NPN9, the base stage of triode NPN5, NPN4, NPN9 and NPN8 is connected the output of control Driver Circuit respectively, the emitter of NPN5 and the collector electrode of NPN4 also meet the output OB that constitutes this toy direct current machine drive integrated circult, connect the input of toy direct current machine M; The collector electrode of the emitter of triode NPN9 and triode NPN8 also meets the output OA that constitutes this toy direct current machine drive integrated circult, connects another input of toy direct current machine M.
2. toy lockset direct current machine drive integrated circult according to claim 1 is characterized in that, said chip is encapsulated in the Plastic Package of the SOP8 of a standard or DIP8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200736178U CN201947216U (en) | 2011-03-18 | 2011-03-18 | Drive integrated circuit of a DC motor of a toy lock set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200736178U CN201947216U (en) | 2011-03-18 | 2011-03-18 | Drive integrated circuit of a DC motor of a toy lock set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201947216U true CN201947216U (en) | 2011-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200736178U Expired - Lifetime CN201947216U (en) | 2011-03-18 | 2011-03-18 | Drive integrated circuit of a DC motor of a toy lock set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201947216U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664587A (en) * | 2012-05-30 | 2012-09-12 | 深圳市英锐芯电子科技有限公司 | Novel motor driving circuit |
| CN104345653A (en) * | 2014-10-09 | 2015-02-11 | 赵崇谊 | Control device of electrombile intelligent drum brake anti-theft lock |
| CN105162442A (en) * | 2015-10-08 | 2015-12-16 | 重庆中科芯亿达电子有限公司 | Power tube driving integrated circuit |
| CN106787964A (en) * | 2015-11-19 | 2017-05-31 | 张家港合升进出口有限公司 | A kind of electromotor control circuit |
| CN110488680A (en) * | 2019-07-25 | 2019-11-22 | 宁波三星医疗电气股份有限公司 | A kind of control circuit with clamp function |
| CN114740580A (en) * | 2020-12-23 | 2022-07-12 | 浙江宇视科技有限公司 | Drive chip control method, drive chip control device, electronic equipment and medium |
-
2011
- 2011-03-18 CN CN2011200736178U patent/CN201947216U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664587A (en) * | 2012-05-30 | 2012-09-12 | 深圳市英锐芯电子科技有限公司 | Novel motor driving circuit |
| CN104345653A (en) * | 2014-10-09 | 2015-02-11 | 赵崇谊 | Control device of electrombile intelligent drum brake anti-theft lock |
| CN105162442A (en) * | 2015-10-08 | 2015-12-16 | 重庆中科芯亿达电子有限公司 | Power tube driving integrated circuit |
| CN106787964A (en) * | 2015-11-19 | 2017-05-31 | 张家港合升进出口有限公司 | A kind of electromotor control circuit |
| CN110488680A (en) * | 2019-07-25 | 2019-11-22 | 宁波三星医疗电气股份有限公司 | A kind of control circuit with clamp function |
| CN114740580A (en) * | 2020-12-23 | 2022-07-12 | 浙江宇视科技有限公司 | Drive chip control method, drive chip control device, electronic equipment and medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110824 |
|
| CX01 | Expiry of patent term |