Circuit for controlling power input time sequence through MINI PC
By designing a circuit including input units, timing units and switching units, using DC power sockets, filter capacitors and bipolar components, the power timing control of the MINI PC system is realized, solving the large space and cost of embedded controllers. The high problem reduces product size and cost and improves system stability.
Patent Information
- Application Number
- CN202323486835.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-20
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2033-12-20
AI Technical Summary
In MINI PC systems, embedded controllers take up a large space and are costly, making it difficult to achieve simplified and reliable control of power timing, resulting in system failures and power fluctuations.
A circuit including an input unit, a timing unit and a switching unit is designed. The power supply delay start and stop is achieved through the RC charging circuit and voltage divider circuit using DC power socket, filter capacitor, voltage regulator diode, PMOS tube and NMOS tube. , alternatively embedded controllers to manage power timing.
Reduces costs, reduces product size, improves system reliability and stability, avoids power fluctuations and failures, and improves PCB utilization.
Smart Images
Figure CN222147389U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of MINI PC computer systems, in particular to a circuit for controlling power input timing of a MINI PC. Background Art
[0002] With the rapid development of MINI PC technology, low power consumption, miniaturization and integration are the development trends of MINI PC. The requirements for hardware circuit design are getting higher and higher, and the device layout is getting more and more compact. Most computer designs use embedded controllers (EC) to manage the power startup sequence. Since the embedded controller EC is large in size, it occupies a large PCB space inside the MINI PC. Since the MINI PC does not require a built-in keyboard and a built-in battery, the embedded controller (EC) is simply used for timing control and indicator light control. As a power timing management, the embedded controller (EC) is mainly used to control the start and stop of the power supply. The embedded controller (EC) can ensure that each module in the circuit starts and stops in the correct time sequence, thereby improving the reliability and stability of the system, ensuring that each module in the circuit of the MINI PC computer starts and stops in the correct time sequence, and preventing system failures due to some modules not starting or stopping at the specified time. The embedded controller (EC) can also avoid the situation where multiple high-power functional modules are started at the same time, causing power fluctuations or voltage drops. Utility Model Content
[0003] In view of this, it is necessary to provide a circuit for controlling the power input timing of a MINI PC with a simplified circuit and reliable timing control, which can replace the embedded controller inside the MINI PC to manage the power timing, reduce costs, reduce product size, and control the start and stop of the input power through the hardware circuit.
[0004] A circuit for controlling power input timing of a MINI PC comprises an input unit, a timing unit and a switch unit. The input unit is connected to the timing unit, and the timing unit is connected to the switch unit. The input unit comprises a DC power socket, a filter capacitor C1, a filter capacitor C2 and a voltage regulator diode. The timing unit comprises a PMOS tube, a resistor ER1, a resistor ER2, a capacitor EC1, a resistor 3R1, a resistor 3R2 and a capacitor 3C1. The switch unit comprises an NMOS tube.
[0005] Further, in the input unit, pin 1 of the DC power socket is connected to the positive electrode of the external DC power supply, pins 2 and 3 of the DC power socket are grounded, the filter capacitor C1 is connected in parallel with pins 1 and 2 of the DC power socket, the filter capacitor C2 is connected in parallel with pins 1 and 2 of the DC power socket, the cathode of the Zener diode is connected to pin 1 of the DC power socket, and the anode of the Zener diode is connected to pin 2 of the DC power socket. The voltage input from pin 1 of the DC power socket is filtered by the filter capacitors C1 and C2, and then stabilized by the Zener diode, and the output voltage +VCC-IN from the cathode of the Zener diode is used as the working power supply for the timing unit, the switch unit and the MINI PC.
[0006] Furthermore, in the timing unit, one end of the resistor ER1 is connected to one end of the resistor ER2 to form a voltage divider circuit, the other end of the resistor ER1 is connected to the cathode of the voltage zener diode of the input unit, the other end of the resistor ER2 is grounded, the capacitor EC1 is connected in parallel with the resistor ER2, and the capacitor EC1 is also connected in parallel with the gate and source of the PMOS tube. After the resistor 3R1 and the resistor 3R2 are connected in series, one end of the resistor 3R1 is connected to the cathode of the voltage zener diode of the input unit, and one end of the resistor 3R2 is connected to the drain of the PMOS tube; after the external power supply is inserted, the output voltage +VCC-IN of the cathode of the voltage zener diode of the input unit supplies power to the PMOS through the resistor 3R1 and the resistor 3R2, and the output voltage +VCC-IN of the cathode of the voltage zener diode of the input unit charges the capacitor EC1 through the resistor ER1, and the voltage of the capacitor EC1 rises slowly. The resistor ER1 and the capacitor EC1 form an RC charging circuit, and the timing unit plays the role of delayed startup.
[0007] Furthermore, in the switch unit, the gate of the NMOS tube is connected to the output end of the timing unit, the source of the NMOS tube is connected to the cathode of the voltage regulator diode of the input unit, and the drain of the NMOS tube is connected to the internal power module of the MINI PC. After the external power supply is inserted, the timing unit can output a low-level signal to the gate of the NMOS tube of the switch unit, and the output voltage +VCC-IN of the input unit is output to the output end of the switch unit, so that the switch unit supplies power to the MINI PC with the output voltage +Vsys.
[0008] The circuit for controlling the timing of power input of the MINI PC solves the problem of timing control of power input without using an embedded controller, thereby improving the PCB utilization rate of MINI PC products, reducing the volume of MINI PC products, reducing costs, and obtaining better benefits. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 The utility model is a circuit schematic diagram of a MINI PC controlling power input timing according to an embodiment of the utility model. DETAILED DESCRIPTION
[0010] The present invention will be described in detail below with reference to specific embodiments and accompanying drawings.
[0011] See also Figure 1 , showing a circuit for controlling power input timing of a MINI PC provided by an embodiment of the utility model, including an input unit, a timing unit, and a switch unit. The input unit is connected to the timing unit, and the timing unit is connected to the switch unit. The input unit includes a DC power socket PJ1, a filter capacitor C1, a filter capacitor C2, and a voltage regulator diode PZ1. The timing unit includes a PMOS tube 3Q1, a resistor ER1, a resistor ER2, a capacitor EC1, a resistor 3R1, a resistor 3R2, and a capacitor 3C1. The switch unit includes an NMOS tube PQ1.
[0012] U1 is the X86 platform power module of MINI PC.
[0013] Further, in the input unit, pin 1 of the DC power socket PJ1 is the positive electrode of the external input DC power supply, pins 2 and 3 of the DC power socket PJ1 are grounded and connected to the negative electrode of the external input DC power supply, the filter capacitor C1 is connected in parallel with pins 1 and 2 of the DC power socket PJ1, the filter capacitor C2 is connected in parallel with pins 1 and 2 of the DC power socket, the cathode of the Zener diode PZ1 is connected to pin 1 of the DC power socket PJ1, and the anode of the Zener diode PZ1 is connected to pin 2 of the DC power socket PJ1. The voltage input from pin 1 of the DC power socket PJ1 is filtered by the filter capacitors C1 and C2. After the Zener diode PZ1 stabilizes the voltage, the cathode of the Zener diode PZ1 outputs a voltage +VCC-IN as the working power supply for the timing unit, the switch unit and the MINI PC.
[0014] Furthermore, in the timing unit, one end of the resistor ER1 is connected to one end of the resistor ER2 to form a voltage divider circuit, the other end of the resistor ER1 is connected to the cathode of the voltage zener diode PZ1 of the input unit, the other end of the resistor ER2 is grounded, the capacitor EC1 is connected in parallel with the resistor ER2, and the capacitor EC1 is also connected in parallel with the gate and source of the PMOS tube 3Q1. After the resistor 3R1 and the resistor 3R2 are connected in series, one end of the resistor 3R1 is connected to the cathode of the voltage zener diode PZ1 of the input unit, the capacitor 3C1 is connected in parallel with the resistor 3R1, and one end of the resistor 3R2 is connected to the drain of the PMOS tube 3Q1; after the external power supply is inserted, the output voltage +VCC-IN of the cathode of the voltage zener diode PZ1 of the input unit is supplied to the PMOS through the resistors 3R1 and 3R2. The output voltage +VCC-IN of the cathode of the voltage zener diode PZ1 of the input unit charges the capacitor EC1 through the resistor ER1, and the voltage of the capacitor EC1 rises slowly. After the voltage of the capacitor EC1 rises to the turn-on voltage of the PMOS tube 3Q1, the PMOS tube 3Q1 is turned on, and the drain of the PMOS tube 3Q1 outputs a low-level signal to the gate of the NMOS tube PQ1 of the switch unit through the voltage division of the resistors 3R1 and 3R2, and the switch unit is turned on to supply power to the power module inside the computer. Due to the influence of the RC charge and discharge delay circuit composed of the resistor ER1 and the capacitor EC1, the timing unit plays a role of delaying the startup.
[0015] Further, in the switch unit, the gate of the NMOS tube PQ1 is connected to the output end of the timing unit, the source of the NMOS tube PQ1 is connected to the cathode of the voltage zener diode PZ1 of the input unit, and the drain of the NMOS tube PQ1 is connected to the internal power module of the MINI PC. After the external power supply is inserted, the timing unit outputs a low-level signal to the gate of the NMOS tube of the switch unit, the NMOS tube PQ1 is turned on, the output voltage +VCC-IN of the cathode of the voltage zener diode PZ1 of the input unit connected to the source of the NMOS tube PQ1 is connected to the drain of the NMOS tube PQ1, and the output voltage +VCC-IN of the input unit is output to the output end of the switch unit, so that the switch unit supplies power to the X86 platform power module U1 of the MINI PC computer with the output voltage +Vsys.
[0016] The circuit for controlling the power input timing of the MINI PC solves the problem of controlling the power input timing without using an embedded controller, improves the PCB utilization rate of the MINI PC product, reduces the size of the MINI PC product, reduces the cost, and obtains better economic benefits.
[0017] It should be noted that the present invention is not limited to the above-mentioned embodiments. According to the creative spirit of the present invention, those skilled in the art may also make other changes. These changes made according to the creative spirit of the present invention should be included in the scope of protection required by the present invention.
Claims
1. A circuit for controlling the timing of power input in a MINI PC. It is characterized in that It includes an input unit, a timing unit, and a switch unit. The input unit is connected to the timing unit, and the timing unit is connected to the switch unit. The input unit includes a DC power socket, a filter capacitor C1, a filter capacitor C2, and a voltage regulator diode. The timing unit includes a PMOS tube, a resistor ER1, a resistor ER2, a capacitor EC1, a resistor 3R1, a resistor 3R2, and a capacitor 3C1. The switch unit includes an NMOS tube.
2. The circuit for controlling power input timing of a MINI PC as claimed in claim 1, It is characterized in that In the input unit, pin 1 of the DC power socket is connected to the positive electrode of the external DC power supply, pins 2 and 3 of the DC power socket are grounded, the filter capacitor C1 is connected in parallel with pins 1 and 2 of the DC power socket, the filter capacitor C2 is connected in parallel with pins 1 and 2 of the DC power socket, the cathode of the voltage regulator diode is connected to pin 1 of the DC power socket, the anode of the voltage regulator diode is connected to pin 2 of the DC power socket, the voltage input from pin 1 of the DC power socket is filtered by the filter capacitors C1 and C2, and after being stabilized by the voltage regulator diode, the voltage +VCC-IN is output from the cathode of the voltage regulator diode as the working power supply for the timing unit, the switch unit and the MINI PC.
3. The circuit for controlling power input timing of a MINI PC as claimed in claim 1, It is characterized in that In the timing unit, one end of the resistor ER1 is connected to one end of the resistor ER2 to form a voltage divider circuit, the other end of the resistor ER1 is connected to the cathode of the voltage zener diode of the input unit, the other end of the resistor ER2 is grounded, the capacitor EC1 is connected in parallel with the resistor ER2, and the capacitor EC1 is also connected in parallel with the gate of the PMOS tube and the source of the PMOS tube. After the resistor 3R1 and the resistor 3R2 are connected in series, one end of the resistor 3R1 is connected to the cathode of the voltage zener diode of the input unit, and one end of the resistor 3R2 is connected to the drain of the PMOS tube; after the external power supply is inserted, the output voltage +VCC-IN of the cathode of the voltage zener diode of the input unit supplies power to the PMOS tube through the resistor 3R1 and the resistor 3R2, and the output voltage +VCC-IN of the input unit charges the capacitor EC1 through the resistor ER1, and the resistor ER1 and the capacitor EC1 form an RC charging circuit, and the timing unit is used for delayed startup.
4. The circuit for controlling power input timing of a MINI PC as claimed in claim 2, It is characterized in that In the switch unit, the gate of the NMOS tube PQ1 is connected to the output end of the timing unit, the source of the NMOS tube PQ1 is connected to the cathode of the voltage regulator diode of the input unit, and the drain of the NMOS tube PQ1 is connected to the internal power module of the MINI PC. After the external power supply is inserted, the timing unit can output a low-level signal to the gate of the NMOS tube PQ1 of the switch unit and turn on the NMOS tube PQ1. The output voltage +VCC-IN of the input unit connected to the source of the NMOS tube PQ1 is connected to the drain of the NMOS tube PQ1, and the output voltage +VCC-IN of the input unit is output to the output end of the switch unit, so that the switch unit supplies power to the X86 platform power module U1 of the MINI PC computer with the output voltage +Vsys.