REALTEK chip-oriented multi-power-supply-mode burning tool circuit

Abstract

The utility model relates to a REALTEK chip-oriented circuit of a multi-power-supply-mode burning tool. The REALTEK chip-oriented circuit comprises a main control chip, a control circuit and a battery, the control circuit comprises an on-off circuit for controlling the battery to supply power to the main control chip, a key switch for triggering the on-off circuit to be connected, and an I / O circuit for performing state control on the on-off circuit in a power-on state; the on-off circuit comprises a power supply output pin, and the I / O circuit is controlled by the main control chip; a main control chip and a control circuit serve as the core, the main control chip controls a battery to supply power to a system through IO, when the main control chip enters a low-power-consumption mode, battery power supply is cut off through IO, then the static power consumption of the system during battery power supply is reduced, the current problem of battery power supply power consumption can be well solved, and meanwhile the circuit is simple in structure and low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of screen display, and more specifically, to a circuit of a programming tool with multiple power supply modes for REALTEK chips. Background Art

[0002] With the development of technology, more and more intelligent devices appear in life. For example, traditional household appliances are now more intelligent. Human-computer interaction of intelligent devices is often completed through voice or preset commands. The presentation of human-computer interaction information is inseparable from screen display. REALTEK chips help intelligent devices present relevant information to users through the screen. On the basis of completing the chip hardware circuit, the display of the human-computer interaction information picture is realized through software-level design. In this process, we need to use a tool to burn the software code into the chip to complete the normal operation of the circuit. Often in the design process, the software code needs to be debugged multiple times to meet the expected requirements. In this process, the software code needs to be burned multiple times.

[0003] The programming work can often be completed in a very short time. Most of the time, the programming tool is in a standby state. Generally, chips are designed to handle standby. When the system enters the standby state, the chip will enter the low-power mode (i.e., static power consumption) of the chip through judgment. For general application circuits, the low-power mode of the chip can already meet the power consumption requirements. However, in some special cases, the static power consumption needs to be as low as possible. For example, when the system is powered by a lithium battery, the power consumption not only affects the effective use of the battery power but also affects the battery life.

[0004] The static power consumption of the battery-powered system is often the key index determining its performance. Reducing the static power consumption of the system during circuit design is a challenging task. The generally common processing method is to select components with lower static power consumption during the material selection in the scheme design. However, the resulting problem is the increase in material costs. There is a need for a circuit of a programming tool with multiple power supply modes for REALTEK chips that can control costs while reducing the static power consumption of the system. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a circuit of a programming tool with multiple power supply modes for REALTEK chips in view of the above-mentioned defects of the prior art.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] Construct a circuit for a multi-power supply method programming tool for REALTEK chips, which includes a main control chip, a control circuit, and a battery; the control circuit includes a switching circuit for controlling the battery to supply power to the main control chip, a key switch for triggering the switching circuit to turn on, and an I / O circuit for controlling the on / off state of the energized switching circuit; the switching circuit includes a power output pin, and the I / O circuit is controlled by the main control chip.

[0008] For the circuit of the multi-power supply method programming tool for REALTEK chips described in the present utility model, the switching circuit includes a first zener diode, an NPN transistor, and a P-channel MOS transistor; the positive electrode of the first zener diode is electrically connected to the key switch, the other end of the key switch is electrically connected to the BAT pin of the battery and the S pole of the P-channel MOS transistor, the negative electrode of the first zener diode is electrically connected to the B pole of the NPN transistor, the E pole of the NPN transistor is grounded, the C pole of the NPN transistor is electrically connected to the G pole of the P-channel MOS transistor, and a first resistor is connected in series between the G pole and the S pole of the P-channel MOS transistor; the D pole of the P-channel MOS transistor is connected to the power output pin.

[0009] For the circuit of the multi-power supply method programming tool for REALTEK chips described in the present utility model, the switching circuit further includes a second resistor and a third resistor; the second resistor is connected in series between the negative electrode of the first zener diode and the B pole of the NPN transistor; the third resistor is connected in series between the C pole of the NPN transistor and the G pole of the P-channel MOS transistor.

[0010] For the circuit of the multi-power supply method programming tool for REALTEK chips described in the present utility model, the I / O circuit includes a second zener diode, a fourth resistor, and a fifth resistor; the positive electrode of the first zener diode is electrically connected to the positive electrode of the second zener diode; the negative electrode of the second zener diode is electrically connected to the fourth resistor, the other end of the fourth resistor is electrically connected to the main control chip and the fifth resistor, and the other end of the fifth resistor is grounded.

[0011] For the circuit of the multi-power supply method programming tool for REALTEK chips described in the present utility model, the I / O circuit includes a third zener diode and a sixth resistor; the negative electrode of the third zener diode is electrically connected to the negative electrode of the first zener diode, the positive electrode of the third zener diode is electrically connected to the main control chip and the sixth resistor, and the other end of the sixth resistor is grounded.

[0012] The circuit of the programming tool with multiple power supply methods for REALTEK chips according to the present utility model further includes a TYPC-C interface and an LDO conversion circuit; the input end of the LDO conversion circuit is electrically connected to both the TYPC-C interface and the power output pin.

[0013] The circuit of the programming tool with multiple power supply methods for REALTEK chips according to the present utility model further includes a battery charging IC, and the battery charging IC is used to charge the battery.

[0014] The circuit of the programming tool with multiple power supply methods for REALTEK chips according to the present utility model, wherein the input end of the battery charging IC is electrically connected to the TYPC-C interface.

[0015] The circuit of the programming tool with multiple power supply methods for REALTEK chips according to the present utility model, wherein a programming terminal is connected to the main control chip.

[0016] The beneficial effect of the present utility model is as follows: By applying the circuit of the present application, with the main control chip and the control circuit as the core, the main control chip controls the battery to supply power to the system through the IO. When the main control chip enters the low-power mode, the battery power supply is cut off through the IO, thereby reducing the static power consumption of the system when the battery supplies power, and well solving the current battery power supply power consumption problem. At the same time, the circuit structure is simple and the cost is low. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will further illustrate the present utility model in conjunction with the drawings and embodiments. The drawings in the following description are only partial embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts:

[0018] Figure 1 It is the circuit principle block diagram of the programming tool with multiple power supply methods for REALTEK chips in the preferred embodiment of the present utility model;

[0019] Figure 2 It is the control circuit schematic diagram of the programming tool with multiple power supply methods for REALTEK chips in the preferred embodiment of the present utility model;

[0020] Figure 3 It is the LDO conversion circuit schematic diagram of the programming tool with multiple power supply methods for REALTEK chips in the preferred embodiment of the present utility model;

[0021] Figure 4 It is the battery charging IC schematic diagram of the programming tool with multiple power supply methods for REALTEK chips in the preferred embodiment of the present utility model;

[0022] Figure 5 It is the schematic diagram of the main control chip of the circuit of the multi-power supply mode programming tool for REALTEK chips in the preferred embodiment of the present utility model;

[0023] Figure 6 It is the schematic diagram of the TYPE-C interface of the circuit of the multi-power supply mode programming tool for REALTEK chips in the preferred embodiment of the present utility model. Specific embodiments

[0024] In order to make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present utility model.

[0025] The circuit of the multi-power supply mode programming tool for REALTEK chips in the preferred embodiment of the present utility model, as Figure 1 shown, and also refer to Figures 2 - 6 , includes a main control chip 1, a control circuit 2 and a battery 3; the control circuit 2 includes a switching circuit 20 for controlling the battery 3 to supply power to the main control chip 1, a key switch 21 for triggering the switching circuit 20 to turn on, and an I / O circuit 22 for controlling the state of the energized switching circuit; the switching circuit 20 includes a power output pin, and the I / O circuit 22 is controlled by the main control chip 1;

[0026] Applying the circuit of the present application, with the main control chip 1 and the control circuit 2 as the core, the main control chip 1 controls the battery 3 to supply power to the system through the IO. When the main control chip 1 enters the low-power mode, the power supply of the battery 3 is cut off through the IO, thereby achieving the reduction of the static power consumption of the system when powered by the battery, and can well solve the current battery power supply consumption problem. At the same time, the circuit structure is simple and the cost is low.

[0027] Preferably, the on-off circuit 20 includes a first voltage stabilizing diode D7, an NPN transistor Q2, and a P-channel MOS transistor QD2; the positive electrode of the first voltage stabilizing diode D7 is electrically connected to the key switch 21, the other end of the key switch 21 is electrically connected to the BAT pin of the battery 3 and the S pole of the P-channel MOS transistor QD2, the BAT pin of the battery and the S pole of the P-channel MOS transistor QD2 are electrically connected, the negative electrode of the first voltage stabilizing diode D7 is electrically connected to the B pole of the NPN transistor Q2, the E pole of the NPN transistor Q2 is grounded, the C pole of the NPN transistor Q2 is electrically connected to the G pole of the P-channel MOS transistor QD2, and a first resistor is connected in series between the G pole and the S pole of the P-channel MOS transistor QD2; the D pole of the P-channel MOS transistor QD2 is connected to the power output pin;

[0028] The principle is explained as follows: The MOS transistor QD2 is default off. When the system needs to be powered by the battery, when the key switch 21 is pressed, the 1 pin of the transistor Q2 is at a high level, Q2 conducts, then the MOS transistor QD2 conducts, the voltage of the BAT pin of the battery 3 is given to 5V, the system powers on, the main control chip 1 starts to work, and the BAT_EN IO port outputs a high level. When the key switch is released, at this time QD2 still remains in the conducting state, then the battery power supply is completed. When the system enters the low power consumption state, the BAT_EN IO port outputs a low level to cut off the system power supply, so as to reduce the static power consumption of the system.

[0029] In addition, to prevent the system device from repeatedly entering the working state and then shutting down due to accidental touch of the key switch when the battery is installed and the device is in the shutdown state, it can be set that the key switch needs to be long-pressed to complete the startup.

[0030] Preferably, the on-off circuit 20 further includes a second resistor RP11 and a third resistor RP14; the second resistor RP11 is connected in series between the negative electrode of the first voltage stabilizing diode D7 and the B pole of the NPN transistor Q2; the third resistor RP14 is connected in series between the C pole of the NPN transistor Q2 and the G pole of the P-channel MOS transistor QD2; for load protection to prevent short circuit.

[0031] Preferably, the I / O circuit 22 includes a second voltage stabilizing diode D6, a fourth resistor RP10, and a fifth resistor RP9; the positive electrode of the first voltage stabilizing diode D7 is electrically connected to the positive electrode of the second voltage stabilizing diode D6; the negative electrode of the second voltage stabilizing diode D6 is electrically connected to the fourth resistor RP10, the other end of the fourth resistor RP10 is electrically connected to the main control chip 1 and the fifth resistor RP9, and the other end of the fifth resistor RP9 is grounded; it further includes a third voltage stabilizing diode D5 and a sixth resistor RP8; the negative electrode of the third voltage stabilizing diode D5 is electrically connected to the negative electrode of the first voltage stabilizing diode D7, the positive electrode of the third voltage stabilizing diode D5 is electrically connected to the main control chip 1 and the sixth resistor RP8, and the other end of the sixth resistor RP8 is grounded; facilitating the main control chip 1 to perform I / O control and receive feedback signals.

[0032] Preferably, it further includes a TYPC-C interface 4 and an LDO conversion circuit 5; the input end of the LDO conversion circuit 5 is electrically connected to both the TYPC-C interface 4 and the power output pin; when an external power supply is connected to the TYPC-C interface 4, the system can be powered through the TYPC-C interface 4; the LDO conversion circuit 5 can adopt a circuit as shown in Figure 3 the figure, or an existing voltage conversion circuit, and there is no limitation on this.

[0033] Preferably, it further includes a battery charging IC 6, which is used to charge the battery 3; the input end of the battery charging IC 6 is electrically connected to the TYPC-C interface 4; with this design, the battery can be charged through the TYPC-C interface 4; the battery charging IC 6 can adopt a circuit as shown in Figure 4 the figure, or an existing voltage conversion circuit, and there is no limitation on this.

[0034] Preferably, a programming terminal 7 is connected to the main control chip 1 for convenient programming; in other application scenarios, the programming terminal 7 can be replaced with other application modules.

[0035] It should be understood that those of ordinary skill in the art can make improvements or transformations according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of the present utility model.

Claims

1. A circuit of a multi-power supply mode burning tool for REALTEK chips, characterized in that: It includes a main control chip, a control circuit and a battery; the control circuit includes an on-off circuit that controls the battery to supply power to the main control chip, a key switch that triggers the on-off circuit to be turned on, and an I / O circuit that controls the state of the on-off circuit in the power-on state; the on-off circuit includes a power output pin, and the I / O circuit is controlled by the main control chip.

2. The circuit of the multi-power supply mode burning tool for REALTEK chip according to claim 1, characterized in that: The on-off circuit includes a first voltage stabilizing diode, an NPN transistor and a P-channel MOS transistor; the anode of the first voltage stabilizing diode is electrically connected to the key switch, the other end of the key switch is electrically connected to the BAT pin of the battery and the S pole of the P-channel MOS transistor, the cathode of the first voltage stabilizing diode is electrically connected to the B pole of the NPN transistor, the E pole of the NPN transistor is grounded, the C pole of the NPN transistor is electrically connected to the G pole of the P-channel MOS transistor, the G pole of the P-channel MOS transistor and the S pole of the P-channel MOS transistor are connected in series through a first resistor; the D pole of the P-channel MOS transistor is connected to the power output pin.

3. The circuit of the multi-power supply mode burning tool for REALTEK chip according to claim 2 is characterized in that: The on-off circuit also includes a second resistor and a third resistor; the second resistor is arranged in series between the cathode of the first voltage stabilizing diode and the B pole of the NPN transistor; the third resistor is arranged in series between the C pole of the NPN transistor and the G pole of the P-channel MOS tube.

4. The circuit of the multi-power supply mode burning tool for REALTEK chip according to claim 2 is characterized in that: The I / O circuit includes a second voltage-stabilizing diode, a fourth resistor and a fifth resistor; the anode of the first voltage-stabilizing diode is electrically connected to the anode of the second voltage-stabilizing diode; the cathode of the second voltage-stabilizing diode is electrically connected to the fourth resistor, the other end of the fourth resistor is electrically connected to the main control chip and the fifth resistor, and the other end of the fifth resistor is grounded.

5. The circuit of the multi-power supply mode burning tool for REALTEK chip according to claim 4 is characterized in that: The I / O circuit also includes a third zener diode and a sixth resistor; the cathode of the third zener diode is electrically connected to the cathode of the first zener diode, the anode of the third zener diode is electrically connected to the main control chip and the sixth resistor, and the other end of the sixth resistor is grounded.

6. The circuit of the multi-power supply mode burning tool for REALTEK chip according to any one of claims 1 to 5, characterized in that: It also includes a TYPC-C interface and an LDO conversion circuit; the input end of the LDO conversion circuit is electrically connected to the TYPC-C interface and the power output pin.

7. The circuit of the multi-power supply mode burning tool for REALTEK chip according to claim 6, characterized in that: A battery charging IC is also included, and the battery charging IC is used to charge the battery.

8. The circuit of the multi-power supply mode burning tool for REALTEK chip according to claim 7, characterized in that: The input end of the battery charging IC is electrically connected to the TYPC-C interface.

9. The circuit of the multi-power supply mode burning tool for REALTEK chip according to any one of claims 1 to 5, characterized in that: The main control chip is connected with a burning terminal.

Images