CN111953047A

CN111953047A - Power supply device, electronic apparatus, and power supply method

Info

Publication number: CN111953047A
Application number: CN202010807997.7A
Authority: CN
Inventors: 彭雄辉
Original assignee: Oppo Chongqing Intelligent Technology Co Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-08-12
Filing date: 2020-08-12
Publication date: 2020-11-17
Anticipated expiration: 2040-08-12
Also published as: WO2022033159A1; CN111953047B

Abstract

The application discloses power supply unit, electronic equipment and power supply method relates to power supply technical field, and power supply unit includes: the power supply pack comprises a first power supply module, a second power supply module and a third power supply module, the second power supply module and the third power supply module are used for supplying power to the light-emitting assembly, and the first power supply module is used for supplying power to the peripheral assembly. The first power supply module is used for outputting a first voltage; the second power supply module is used for outputting a second voltage; the third power supply module is used for outputting a third voltage; and the main control module is respectively connected with the first power supply module, the second power supply module and the third power supply module and is used for controlling the first power supply module, the second power supply module and the third power supply module to supply power to the organic light-emitting diode screen. Therefore, the power supply device can be simplified, and excessive power supply modules in the PMIC can be avoided, thereby reducing the cost and power consumption.

Description

Power supply device, electronic apparatus, and power supply method

Technical Field

The present disclosure relates to the field of power supply technologies, and more particularly, to a power supply device, an electronic apparatus, and a power supply method.

Background

The application of the current AMOLED screen in a mobile phone is more and more extensive, compared with the traditional LCD, the AMOLED screen is very thin, and a touch layer can be integrated in the screen, so that the AMOLED screen has more advantages in the aspect of being an ultrathin machine. The Power driving circuit adopted by the AMOLED at present generally adopts an integrated Power Management circuit (PMIC) to supply Power, and has the disadvantages of high cost and large Power consumption.

Disclosure of Invention

The application provides a power supply device, an electronic device and a power supply method, so as to overcome the defects.

In a first aspect, an embodiment of the present application provides a power supply apparatus, which is applied to power supply of an organic light emitting diode screen, where the screen includes a light emitting component and a peripheral component, and the power supply apparatus includes: the power supply pack comprises a first power supply module, a second power supply module and a third power supply module, the second power supply module and the third power supply module are used for supplying power to the light-emitting assembly, and the first power supply module is used for supplying power to the peripheral assembly. The first power supply module is used for outputting a first voltage; the second power supply module is used for outputting a second voltage; the third power supply module is used for outputting a third voltage; the main control module is respectively connected with the first power supply module, the second power supply module and the third power supply module and is used for controlling the first power supply module, the second power supply module and the third power supply module to supply power to the organic light emitting diode screen.

In a second aspect, an embodiment of the present application further provides an electronic device, which includes an organic light emitting diode screen and the power supply device, where the power supply device is connected to the organic light emitting diode screen and is used to supply power to the organic light emitting diode screen.

In a third aspect, an embodiment of the present application further provides a power supply method, which is applied to the power supply apparatus, where the method includes: the main control module controls the first power supply module to output a first voltage and controls the second power supply module to output a second voltage according to a first control signal received by the first control terminal; and controlling the third power supply module to output a third voltage according to a second control signal received by the second control terminal.

The application provides a power supply device, an electronic device and a power supply method, wherein the power supply device comprises: the power supply pack comprises a first power supply module, a second power supply module and a third power supply module, the second power supply module and the third power supply module are used for supplying power to the light-emitting assembly, and the first power supply module is used for supplying power to the peripheral assembly. And the main control module is respectively connected with the first power supply module, the second power supply module and the third power supply module and is used for controlling the first power supply module, the second power supply module and the third power supply module to supply power to the organic light-emitting diode screen. Therefore, the power supply device can be simplified, and excessive power supply modules in the PMIC can be avoided, thereby reducing the cost and power consumption.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a block diagram illustrating a power supply apparatus according to an embodiment of the present application;

fig. 2 is a block diagram showing a power supply apparatus according to another embodiment of the present application;

fig. 3 is a block diagram showing a power supply apparatus according to still another embodiment of the present application;

FIG. 4 is a schematic diagram of an electronic device provided by an embodiment of the application;

FIG. 5 is a flow chart of a method of providing power according to an embodiment of the present application;

fig. 6 shows a block diagram of a power supply device provided in an embodiment of the present application;

fig. 7 is a storage unit for storing or carrying program codes for implementing a power supply method according to an embodiment of the present application.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

In the description of the present invention, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The current Active-matrix organic light-emitting diode (AMOLED) screen is more and more widely used in mobile phones, and compared with a conventional Liquid Crystal Display (LCD), the AMOLED screen is very thin and can integrate a touch layer in the screen, so that the AMOLED screen has more advantages in the aspect of being an ultra-thin phone. The AMOLED is self-luminous, a single pixel does not work when displaying black, and the power consumption is low when displaying dark color. AMOLEDs save power in dark colors and have hundreds of times the traditional LCD. The AMOLED has certain flexibility and is not easy to damage compared with an LCD screen of a glass substrate. Therefore, the power supply of the AMOLED is different from that of a Thin Film Transistor LCD (TFTLCD), the OLED needs to apply a certain voltage on the positive electrode and the negative electrode to emit light, and the positive voltage and the negative voltage of the AMOLED need to be supplied by a special DCDC. Currently, a PMIC is generally adopted to supply power to a driving circuit adopted by an AMOLED. The PMIC encapsulates the traditional multi-output power supply in one chip, so that the high efficiency of a multi-power application scene is higher. Typically, there are multiple DC-DC converters (DC-DC converters) and multiple Low dropout regulators (LDOs).

At present, the use and layout of the driving circuit of the AMOLED on the terminal still need to be improved, and the following defects mainly exist: 1) the use of integrated PMICs is costly. 2) The integrated PMIC has lower precision than a single LDO drive. 3) The PMIC layout space is large. 4) The PMIC consumes a large amount of power. 5) PMIC reliability is low. 6) The current PMIC compatibility is very poor.

Therefore, in order to overcome the above-mentioned drawbacks, embodiments of the present application provide a power supply apparatus, an electronic device, and a power supply method, which can simplify a power driver for supplying power to an AMOLED, thereby reducing cost.

Specifically, referring to fig. 1, the power supply device 10 includes a power pack 100 and a main control module 200. The screen 20 includes a light emitting assembly 21 and a peripheral assembly 22. As an embodiment, the screen may be the AMOLED screen described above, and the light emitting assembly 21 may be an organic light emitting diode OLED, the light emitting assembly including two power terminals, a positive terminal and a negative terminal, respectively, the positive terminal may be an anode terminal of the light emitting diode, and the negative terminal may be a cathode terminal of the light emitting diode.

The peripheral component 22 may be an electronic component other than the light emitting component 21 in the screen, and as an embodiment, the peripheral component 22 also includes an active device therein, which needs to operate at a certain voltage. For example, the active device may be a switching circuit connected to the light emitting assembly for controlling the power supply of the positive terminal and/or the negative terminal of the light emitting assembly to be turned on or off, so as to control when the light emitting assembly emits light. For example, the active device may be a transistor, and the source of the transistor needs an external power supply to operate normally. As an embodiment, the peripheral component includes a power supply terminal for receiving a dc voltage. For example, if the peripheral device is a transistor, the power source of the peripheral device is the source of the transistor.

The power supply pack 100 comprises a first power supply module 110, a second power supply module 120 and a third power supply module 130, wherein the second power supply module 120 and the third power supply module 130 are used for supplying power to the light-emitting component, as an implementation manner, the second power supply module 120 is connected with a negative terminal of the light-emitting component, the third power supply module 130 is connected with a positive terminal of the light-emitting component, and the first power supply module 110 is used for supplying power to the peripheral component.

As shown in fig. 2, fig. 2 shows a circuit configuration diagram of the power supply apparatus. The first power supply module 110 is configured to output a first voltage V01 to the peripheral component; the second power supply module 120 is configured to output a second voltage V02 to the negative terminal of the light emitting assembly; the third power supply module 130 is configured to output a third voltage V03 to the positive terminal of the light emitting assembly. The main control module 200 is respectively connected to the first power supply module 110, the second power supply module 120, and the third power supply module 130, and is configured to control the first power supply module 110, the second power supply module 120, and the third power supply module 130 to supply power to the oled screen.

As an embodiment, the main control module 200 includes a first control end ESWIRE and a second control end ASWIRE.

The main control module 200 is configured to control the first power supply module 110 to output a first voltage V01 and control the second power supply module 120 to output a second voltage V02 according to a first control signal received by the first control end ESWIRE. As an embodiment, the first control signal may be an externally input voltage signal, that is, an active level of the first control signal may be preset, that is, when the first control signal is an active level, the main control module 200 may determine that the first control signal is active, that is, control the first power supply module to output the first voltage and control the second power supply module to output the second voltage, where the first control signal may be a pulse signal with a high level and a low level that are alternately changed. In the embodiment of the present application, the main control module 200 controls the first power supply module 110 to output the first voltage V01 when detecting that the first control signal received by the first control end ESWIRE is at a specified level, where the specified level may be a high level or a low level, and specifically, may be set according to actual use. In the embodiment of the present application, the specified level is a high level.

The main control module 200 controls the first power supply module 110 to output the first voltage V01 when detecting that the first control signal received by the first control end ESWIRE is at a high level, and then controls the second power supply module 120 to output the second voltage V02 according to the duration of the first control signal at a specified level. As an embodiment, the duration of the specified level may be obtained by counting the number of pulses of the first control signal, for example, the first control signal is a periodic pulse signal, and the duration of the high level in each period is a known parameter, so as to count the number of pulses, and then multiplying the number of pulses by the known parameter, so as to obtain the duration of the specified level. As another embodiment, a timer may also be started when it is detected that the first control signal is at the specified level, that is, the timer starts to count time starting from a time when the main control module determines that the first control signal received by the first control terminal is at the specified level, so that a time length, that is, a duration, when the level of the first control signal is at the specified level can be determined by counting time of the timer.

Specifically, a specific process of the main control module 200 controlling the first power supply module 110 to output the first voltage V01 and controlling the second power supply module 120 to output the second voltage V02 according to the first control signal received by the first control end ESWIRE will be described with reference to fig. 2.

As shown in fig. 2, when the main control module 200 detects that the first control end ESWIRE is pulled up, that is, when the first control signal received by the first control end ESWIRE is at a high level, the main control module 200 sends a first command to the first power supply module 110, and when the first power supply module 110 detects that the first command is received, the first power supply module 110 outputs a first voltage V01, specifically, the first power supply module 110 may adjust the input voltage VIN to a first voltage V01 through the first inductor L1 in fig. 2 and output the first voltage V01, that is, the voltage VIN is changed to the first voltage V01 through the periodic energy storage and release of the first inductor L1. In the embodiment of the present application, the first voltage V01 may be a fixed voltage value, for example, 4.6V, and the first voltage V01 can supply power to the peripheral device 22 in the screen, for example, the peripheral device 22 includes a transistor as a control switch of the light emitting device for turning on or off the light emitting device. The first voltage V01 can power the source of the transistor, and the first voltage V01 can power other electrical components, such as a chip or an active device in an electronic device. In particular, please refer to the following embodiments of the electronic device.

When the main control module 200 detects that the first control end ESWIRE is pulled up, it starts to record the duration of the first control end ESWIRE being pulled up, that is, the duration of the first control signal received by the first control end ESWIRE being at a high level, and if the duration is greater than a specified duration, controls the second power supply module 120 to output the second voltage V02. The specified time length may be a preset time length, when the duration is longer than the specified time length, a second instruction is sent to the second power supply module 120, and the second power supply module 120 outputs a second voltage V02 in response to the second instruction. As an embodiment, the designated time period may be 10ms, so that after the first control end ESWIRE is pulled up for 10ms, a buck-boost converter (buck-boost converter) inside the second power supply module 120 is started, and then, the second voltage V02 is output by using the periodic energy storage and release of the second inductor L2.

As an implementation manner, the main control module 200 is connected to the enable end of the first power supply module 110 and the enable end of the second power supply module 120, the first instruction and the second instruction sent by the main control module 200 may be a high level or low level signal, and the first instruction is sent to the enable end of the first power supply module 110 and the second instruction is sent to the enable end of the second power supply module 120, so as to start the first power supply module 110 and the second power supply module 120.

In the embodiment of the present application, the value range of the second voltage V02 is-6.6V to-1.0V, that is, the second voltage V02 is an adjustable value, specifically, the first control signal is a periodic pulse signal, and the main control module 200 is further configured to: acquiring a first pulse number of a first control signal received by the first control end ESWIRE; and adjusting the magnitude of the second voltage V02 output by the second power supply module 120 according to the first pulse number. As an embodiment, the main control module 200 includes a counter, which is capable of counting the number of pulses of the first control signal received by the first control end ESWIRE, i.e. counting one pulse every time a cycle is received, and then obtaining the first number of pulses. Then, according to a first corresponding relationship between the preset pulse number and the voltage value, the voltage value corresponding to the first pulse number is searched in the first corresponding relationship, and the voltage value is used as the magnitude of the second voltage output by the second power supply module 120.

As an embodiment, the main control module further includes a second control end ASWIRE, and the main control module 200 is further configured to control the third power supply module 130 to output a third voltage V03 according to a second control signal received by the second control end ASWIRE. As an embodiment, the second control signal may be an externally input voltage signal, that is, an active level of the second control signal may be preset, that is, when the second control signal is an active level, the main control module 200 may assert the second control signal to be active, that is, control the third power supply module 130 to output the third voltage V03, where the second control signal may be a pulse signal with alternating high and low levels. In this embodiment, the main control module 200 controls the third power supply module 130 to output the third voltage V03 when detecting that the second control signal received by the second control end ASWIRE is at a specified level, where the specified level may be a high level or a low level, and specifically, may be set according to actual use. In the embodiment of the present application, the specified level is a high level.

The main control module 200 controls the third power supply module 130 to output the third voltage V03 when detecting that the second control signal received by the second control terminal ASWIRE is at a high level, and specifically, a specific process of the main control module 200 controlling the third power supply module 130 to output the third voltage V03 according to the second control signal received by the second control terminal ASWIRE is described with reference to fig. 2.

As shown in fig. 2, when the main control module 200 detects that the second control end ASWIRE is pulled high, that is, when the second control signal received by the second control end ASWIRE is at a high level, the main control module 200 sends a third instruction to the third power supply module 110. The third power supply module 110 is internally provided with a plurality of BUCK circuits and integrated with a comparison amplifier, and can adjust a voltage by controlling a duty ratio of an input power, thereby outputting a third voltage V03. As an implementation manner, the main control module 200 is connected to an enable terminal of the third power supply module 110, the third instruction sent by the main control module 200 may be a high level or low level signal, and the third instruction is sent to the enable terminal of the third power supply module 110, so as to start the third power supply module 110.

In the embodiment of the present application, the third voltage V03 ranges from 6.9V to 7.9V. That is, the third voltage V03 is an adjustable value, specifically, the second control signal is a periodic pulse signal, and the main control module 200 is further configured to: acquiring a second pulse number of a second control signal received by the second control end ASWIRE; and adjusting the magnitude of the third voltage V03 output by the third power supply module 130 according to the second pulse number. As an embodiment, the main control module 200 can count the number of pulses of the second control signal received by the second control end ASWIRE according to the counter, that is, count one pulse every time one cycle is received, and then obtain the second number of pulses. Then, according to a preset second corresponding relationship between the pulse number and the voltage value, a voltage value corresponding to the second pulse number is searched in the second corresponding relationship, and the voltage value is used as the magnitude of the third voltage V03 output by the third power supply module 130.

In the embodiment of the present application, the value of the first voltage V01 may be a fixed value, for example, 4.6V, the value of the second voltage V02 ranges from-6.6V to-1.0V, and the value of the third voltage V03 ranges from 6.9V to 7.9V. Wherein, the adjusting precision of the second voltage V02 can be 100mV/step, and the adjusting precision of the third voltage V03 can be 50 mV/step.

As an implementation manner, the power supply apparatus 10 further includes a quick charging module 300, where the quick charging module 300 is configured to charge a device to be charged, where the device to be charged may be a rechargeable battery, and the rechargeable battery may be a battery in an electronic device, and specifically, please refer to examples of the subsequent electronic devices.

As an embodiment, the main control module 200 may be provided with a third control end, and when the third control end receives the specific signal, the main control module 200 controls the quick charge module 300 to start. As another embodiment, the main control module 200 may control the fast charging module 300 to start or close according to a second control signal received by a second control end ASWIRE, and specifically, the main control module 200 is further configured to: acquiring a second pulse number of a second control signal received by the second control end ASWIRE; if the second pulse number is a first value, the quick charge module 300 is started; if the second pulse number is a second value, the fast charging module 300 is turned off.

In the embodiment of the present application, the first value is greater than the second value, and after the control module 200 controls the fast charging module 300 to be turned on or turned off based on the second pulse number amount, the second pulse number amount is reset to the initial value, so as to control the fast charging module 300 to be turned on or turned off according to a new second pulse number amount, where the initial value may be 0.

In this embodiment, the first value may be 25, and the second value may be 12, so that when the second control end ASWIRE receives 25 pulses, the fast charging module 300 is controlled to be turned on, and when the second control end ASWIRE receives 12 pulses, the fast charging module 300 is controlled to be turned off.

As an embodiment, the power supply apparatus 10 further includes a short-circuit protection circuit, which can effectively prevent the first power supply module 110, the second power supply module 120, and the third power supply module 130 from being short-circuited to ground, and can also prevent short-circuits from occurring between the power supply modules. A short circuit at any one of the power supply modules will shut down the entire power supply apparatus 10. The power supply device 10 further has an overheat protection function, and specifically, the power supply device 10 further includes an overheat protection device, which is configured to control the power supply device 10 to automatically shut down when the temperature exceeds a high-temperature threshold value, and to control the power supply device 10 to automatically start up after the temperature is reduced to a safety threshold value. Specifically, the over-temperature protection device may utilize a positive temperature characteristic of a breakdown voltage of the zener diode and a negative temperature characteristic of an emitter junction turn-on voltage. When the power supply device 10 works normally, the temperature sensing tube is closed, the protection circuit is not started, and when the working temperature of the power supply device 10 exceeds the set high-temperature threshold, the protection circuit is started to cut off the power path to enable the temperature to be reduced to the safety threshold. The high temperature threshold may be 145 ℃, the safety threshold may be 115 ℃, or other temperature values, which are not limited herein.

In fig. 2, VIN is a power supply input terminal, and the OVP protection circuit plays a role of overvoltage protection; PGND1 and PGND2 are ground circuits; LX1, LX2 and LX3 are current limiting circuits to prevent excessive current from causing chip damage.

Referring to fig. 3, fig. 3 illustrates a power supply apparatus provided in an embodiment of the present application, where the power supply apparatus includes a power supply chip IC and a component circuit, and an internal structure of the power supply chip may be the structure illustrated in fig. 2.

The power chip IC includes a first control terminal ESWIRE, a second control terminal ASWIRE, a reset terminal SET, a first ground terminal PGND1_0, a second ground terminal PGND1_1, a third ground terminal PGND1_2, a fourth ground terminal PGND2, a fifth ground terminal AGND, a first voltage output terminal V01_0, a second voltage output terminal V01_1, a third voltage output terminal V01_2, a fourth voltage output terminal V02_0, a fifth voltage output terminal V02_1, a sixth voltage output terminal V02_2, a seventh voltage output terminal V03, a first current limiting terminal LX1_0, a second current limiting terminal LX1_1, a third current limiting terminal LX2_0, a fourth current limiting terminal LX2_1, a fifth current limiting terminal LX2_2, a sixth current limiting terminal LX3, a first current supply terminal in, a second current limiting terminal PVIN _0, a fourth current supply terminal PVIN _2, and a fourth current supply terminal power supply terminal avv _ 2. The first voltage output terminal V01_0, the second voltage output terminal V01_1, and the third voltage output terminal V01_2 are output terminals of the first power supply module 110, the fourth voltage output terminal V02_0, the fifth voltage output terminal V02_1, and the sixth voltage output terminal V02_2 are output terminals of the second power supply module 120, the seventh voltage output terminal V03 is an output terminal of the third power supply module 130, the first current limiting terminal LX1_0 and the second current limiting terminal LX1_1 are access terminals of the current limiting circuit LX1, the third current limiting terminal LX2_0, the fourth current limiting terminal LX2_1, and the fifth current limiting terminal LX2_2 are access terminals of the current limiting circuit LX2, and the sixth current limiting terminal LX3 is an access terminal of the current limiting circuit LX 3.

The component circuit comprises a first inductor L1, a second inductor L2, a third inductor L3, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a ninth capacitor C9, a first resistor R1, a second resistor R2, a third resistor R3 and a fourth resistor R4.

The first voltage output end V01_0, the second voltage output end V01_1 and the third voltage output end V01_2 are all connected with one end of a second capacitor C2, the other end of the second capacitor C2 is connected with the ground, and the first capacitor C1 is connected in parallel with two ends of a second capacitor C2. The second voltage output terminal V01_1 and the third voltage output terminal V01_2 are both connected to the first voltage output terminal V01_0, and the first voltage output terminal V01_0 is used as an output terminal of the first power supply module 110 for outputting the first voltage V01, i.e. the voltage V01 is VELVDD in fig. 3.

The fourth voltage output end V02_0, the fifth voltage output end V02_1 and the sixth voltage output end V02_2 are all connected with one end of a third capacitor C3, the other end of the third capacitor C3 is connected with the ground, one end of a third capacitor C3 is connected with one end of a fourth capacitor C4, and the other end of the fourth capacitor C4 is connected with the ground. The fifth voltage output terminal V02_1 and the sixth voltage output terminal V02_2 are both connected to the fourth voltage output terminal V02_0, and the fourth voltage output terminal V02_0 is used as an output terminal of the second power supply module 120, and is used for outputting a second voltage V02, that is, the voltage level V02 in fig. 3.

The seventh voltage output terminal V03 is connected to one end of the sixth capacitor C6 and one end of the seventh capacitor C7, respectively, the other end of the sixth capacitor C6 and the other end of the seventh capacitor C7 are both grounded, and the seventh voltage output terminal V03 is used as an output terminal of the third power supply module 130, and is configured to output a third voltage V03, that is, VAVDD in fig. 3 is the third voltage V03.

The first current limiting terminal LX1_0 and the second current limiting terminal LX1_1 are connected in series with the first inductor L1 and then connected to one end of the fourth resistor R4, the other end of the fourth resistor R4 is connected to the input power VPH _ PWR, one end of the eighth capacitor C8 is connected to one end of the fourth resistor R4, and the other end of the eighth capacitor C8 is grounded. The input power VPH _ PWR is connected to one end of the third resistor R3, and the other end of the third resistor R3 is connected to the first power supply terminal AVIN, the second power supply terminal PVIN _0, the third power supply terminal PVIN _1, and the fourth power supply terminal PVIN _ 2. The other end of the third resistor R3 is connected to one end of a ninth capacitor C9 and one end of a third inductor L3, respectively, the other end of the ninth capacitor C9 is grounded, the other end of the third inductor L3 is connected to a sixth current limiting end LX3, the other end of the third resistor R3 is connected to one end of a fifth capacitor C5, and the other end of the fifth capacitor C5 is grounded. The third current limiting terminal LX2_0, the fourth current limiting terminal LX2_1, and the fifth current limiting terminal LX2_2 are all connected to one end of the second inductor L2, and the other end of the second inductor L2 is grounded. The first control end ESWIRE is connected to one end of the tenth capacitor C10 and one end of the first resistor R1, respectively, the other end of the tenth capacitor C10 is grounded, the other end of the first resistor R1 is connected to one end of the first signal input terminal POWER _ RESET _ OLED and one end of the second resistor R2, the other end of the second resistor R2 is connected to the second signal input terminal EN _ VDD _ VSS _ LCD, and the second control end ASWIRE is connected to the third signal input terminal EN _ AVDD. The reset terminal SET, the first ground terminal PGND1_0, the second ground terminal PGND1_1, the third ground terminal PGND1_2, the fourth ground terminal PGND2 and the fifth ground terminal AGND are all grounded.

In one embodiment, the tenth capacitor C10, the ninth capacitor C9, the fifth capacitor C5 and the eighth capacitor C8 are filter capacitors, the fifth capacitor C5 is used for filtering the input power VPH _ PWR inputted to the second power supply terminal PVIN _0, the third power supply terminal PVIN _1 and the fourth power supply terminal PVIN _2, the ninth capacitor C9 is used for filtering the power VPH _ PWR inputted to the first power supply terminal AVIN, and the tenth capacitor C10 is used for filtering the first control signal inputted to the first control terminal ESWIRE. The first inductor L1, the second inductor L2 and the third inductor L3 are used for stabilizing input, the first capacitor C1 and the second capacitor C2 are used for stabilizing output VELLVDD, the third resistor R3 and the fourth resistor R4 are used for preventing overcurrent, and the seventh capacitor C7 and the sixth capacitor C6 are used for stabilizing output VAVDD; the third capacitor C3 and the fourth capacitor C4 are used for stabilizing the output VELVSS, and the first resistor and the second resistor are used for stabilizing the input.

The power chip IC has 3 paths of voltage outputs, namely VO1, VO2 and VO3, wherein the VO1 is fixed 4.6V, and the output is not adjustable; VO2 is adjustable from-6.6V to-1.0V; VO3 is adjustable from 6.9V to 7.9V. VO3 is regulated by the ASWIRE signal; VO2 and V01 are regulated by the ESWIRE signal. VO1, VO2, VO3 in fig. 2 correspond to VELVDD VELVSS VAVDD of fig. 3, respectively.

As shown in fig. 3, the first signal input terminal POWER _ RESET _ OLED or the second signal input terminal EN _ VDD _ VSS _ LCD is used for inputting the first control signal to the first control terminal width, and the third signal input terminal EN _ AVDD is used for inputting the second control signal to the second control terminal width.

In addition, when the power supply device is mounted on an electronic apparatus, the power supply device is used as a DCDC voltage converter with a high switching frequency, and in order to ensure good output characteristics, the following conditions need to be satisfied on a PCB: the analog input AVIN and the power input PVIN need to be separated, as can be seen from fig. 3, the first power supply terminal AVIN is used as an analog input, the second power supply terminal PVIN _0, the third power supply terminal PVIN _1, and the fourth power supply terminal PVIN _2 are used as power inputs, the first power supply terminal AVIN and the second power supply terminal PVIN _0 are not connected to the same node, and the first power supply terminal AVIN and the second power supply terminal PVIN _2 are communicated at a filter capacitor of an input power supply, and the analog input and the power input are realized by different ports; the filter capacitor of the input/output power supply should be as close as possible to the corresponding pin of the power supply chip IC during layout, and should be as short as possible and connected by thick wires, for example, the width of the wire may be 0.2mm, and the length is within 10 mm; the input ground is connected with the output ground on the same layer of the PCB; the current between LX and the first inductor L1 and the second inductor L2 is large, and the distance between LX and the first inductor L1 and the second inductor L2 should be as wide as possible, so that the flowing current can be larger; AGND, PGND1 and PGND2 are connected to Thermal PAD on the PCB board.

Referring to fig. 4, fig. 4 shows an electronic device, where the electronic device 1 includes the screen and the power supply device, and the power supply device is connected to the screen and is used for supplying power to the screen. The electronic device 1 may be a smart phone, a tablet computer, an electronic book, or other electronic devices capable of running an application program. As an embodiment, the electronic device may further include a processor and a memory, and the first voltage V01 may supply power to active devices of the electronic device in addition to the peripheral components 22 of the screen 20, and the active devices may be the processor and the memory of the electronic device.

A processor may include one or more processing cores. The processor connects various parts within the overall electronic device 1 using various interfaces and lines, and performs various functions of the electronic device 1 and processes data by executing or executing instructions, programs, code sets, or instruction sets stored in the memory, and calling data stored in the memory. Alternatively, the processor may be implemented in hardware using at least one of Digital Signal Processing (DSP), Field-Programmable Gate Array (FPGA), and Programmable Logic Array (PLA). The processor may integrate one or more of a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), a modem, and the like. Wherein, the CPU mainly processes an operating system, a user interface, an application program and the like; the GPU is used for rendering and drawing display content; the modem is used to handle wireless communications. It is to be understood that the modem may be implemented by a communication chip without being integrated into the processor.

The Memory may include a Random Access Memory (RAM) or a Read-Only Memory (Read-Only Memory). The memory may be used to store an instruction, a program, code, a set of codes, or a set of instructions. The memory may include a stored program area and a stored data area, wherein the stored program area may store instructions for implementing an operating system, instructions for implementing at least one function (such as a touch function, a sound playing function, an image playing function, etc.), instructions for implementing various method embodiments described below, and the like. The storage data area may also store data created by the terminal in use, such as a phonebook, audio-video data, chat log data, and the like.

As an embodiment, the electronic device may further include a rechargeable battery, and the fast charging module 300 of the power supply apparatus 20 may charge the rechargeable battery of the electronic device, and the power supply supports a normal charging mode and a fast charging mode, wherein the charging current of the fast charging mode is greater than the charging current of the normal charging mode, for example, the charging current of the normal charging mode is generally less than 2.5A, and the charging current of the fast charging mode may be greater than 3A.

Therefore, compared with the power supply device using the PMIC to supply power to the AMOLED, the power supply device 20 provided in the embodiment of the present application has fewer integrated power supply modules compared with the PMIC, and can overcome the defect of using the PMIC to supply power to the AMOLED, thereby improving the performance of the product, and having the following benefits: the power supply driving device has the advantages of lower cost, higher power supply driving precision, small layout space, low power consumption, high reliability and good compatibility.

Referring to fig. 5, fig. 5 shows a power supply method, which is applied to the power supply apparatus, and the main execution body of the method is the main control module 200, specifically, the method may include: s501 to S502.

S501: and controlling the first power supply module to output a first voltage and controlling the second power supply module to output a second voltage according to a first control signal received by the first control terminal.

As an embodiment, when detecting that a first control signal received by the first control terminal is at a specified level, the main control module controls the first power supply module to output a first voltage; acquiring the duration of a first control signal received by the first control end which lasts for a specified level; and if the duration is longer than the specified duration, controlling the second power supply module to output a second voltage.

As an implementation manner, the main control module obtains a first pulse number of a first control signal received by the first control terminal; and adjusting the magnitude of a second voltage output by the second power supply module according to the first pulse number.

S502: and controlling the third power supply module to output a third voltage according to a second control signal received by the second control terminal.

As an embodiment, when detecting that the second control signal received by the second control terminal is at a specified level, the main control module controls the third power supply module to output a third voltage. Specifically, the main control module obtains a second pulse number of a second control signal received by the second control end; and adjusting the magnitude of a third voltage output by the third power supply module according to the second pulse number.

The value range of the second voltage is-6.6V to-1.0V, and the value range of the third voltage is 6.9V to 7.9V.

As an embodiment, the power supply method further includes: acquiring a second pulse number of a second control signal received by the second control end; if the second pulse quantity is a first numerical value, starting the quick charging module; and if the second pulse quantity is a second numerical value, closing the quick charging module.

Specifically, please refer to the foregoing embodiments for those portions of the method not described in detail, which are not described herein again.

Referring to fig. 6, which shows a block diagram of a power supply apparatus provided in an embodiment of the present application, the power supply apparatus 600 is applied to the above-mentioned main control module, specifically, the power supply apparatus 600 may include: first power transmission unit 601 and second power transmission unit 602.

The first power transmission unit 601 is configured to control the first power supply module to output a first voltage and control the second power supply module to output a second voltage according to a first control signal received by the first control terminal.

Further, the first power transmission unit 601 is further configured to control the first power supply module to output a first voltage when detecting that the first control signal received by the first control terminal is at a specified level; acquiring the duration of a first control signal received by the first control end which lasts for a specified level; and if the duration is longer than the specified duration, controlling the second power supply module to output a second voltage.

Further, first power transmission unit 601 is further configured to obtain a first pulse number of the first control signal received by the first control terminal; and adjusting the magnitude of a second voltage output by the second power supply module according to the first pulse number.

A second power transmission unit 602, configured to control the third power supply module to output a third voltage according to a second control signal received by the second control end.

Further, the second power transmission unit 602 is further configured to control the third power supply module to output a third voltage when it is detected that the second control signal received by the second control terminal is at a specified level. Specifically, the main control module obtains a second pulse number of a second control signal received by the second control end; and adjusting the magnitude of a third voltage output by the third power supply module according to the second pulse number.

Further, the power supply apparatus 600 further includes a fast charging unit, where the fast charging unit is configured to obtain a second pulse number of the second control signal received by the second control terminal; if the second pulse quantity is a first numerical value, starting the quick charging module; and if the second pulse quantity is a second numerical value, closing the quick charging module.

It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described apparatuses and modules may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, the coupling between the modules may be electrical, mechanical or other type of coupling.

In addition, functional modules in the embodiments of the present application may be integrated into one processing module, or each of the modules may exist alone physically, or two or more modules are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode.

Referring to fig. 7, a block diagram of a computer-readable storage medium according to an embodiment of the present application is shown. The computer-readable medium 700 has stored therein program code that can be called by a processor to perform the methods described in the above-described method embodiments.

The computer-readable storage medium 700 may be an electronic memory such as a flash memory, an EEPROM (electrically erasable programmable read only memory), an EPROM, a hard disk, or a ROM. Optionally, the computer-readable storage medium 700 includes a non-volatile computer-readable storage medium. The computer readable storage medium 700 has storage space for program code 710 to perform any of the method steps of the method described above. The program code can be read from or written to one or more computer program products. The program code 710 may be compressed, for example, in a suitable form.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not necessarily depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. A power supply device for use in supplying power to an organic light emitting diode screen, the screen including a light emitting element and a peripheral element, the power supply device comprising: the power supply pack consists of a first power supply module, a second power supply module and a third power supply module, the second power supply module and the third power supply module are used for supplying power to the light-emitting component, and the first power supply module is used for supplying power to the peripheral component;

the first power supply module is used for outputting a first voltage to the peripheral component;

the second power supply module is used for outputting a second voltage to the negative electrode end of the light-emitting component;

the third power supply module is used for outputting a third voltage to the positive terminal of the light-emitting assembly;

the main control module is respectively connected with the first power supply module, the second power supply module and the third power supply module and is used for controlling the first power supply module, the second power supply module and the third power supply module to supply power to the organic light emitting diode screen.

2. The power supply device according to claim 1, wherein the main control module comprises a first control terminal and a second control terminal, the first control terminal is configured to receive a first control signal input from the outside, and the second control terminal is configured to receive a second control signal input from the outside;

the main control module is used for controlling the first power supply module to output a first voltage and controlling the second power supply module to output a second voltage according to a first control signal received by the first control terminal;

the main control module is further configured to control the third power supply module to output a third voltage according to a second control signal received by the second control terminal.

3. The power supply device of claim 2, wherein the main control module is further configured to:

when detecting that a first control signal received by the first control terminal is at a specified level, controlling the first power supply module to output a first voltage;

acquiring the duration of a first control signal received by the first control end which lasts for a specified level;

and if the duration is longer than the specified duration, controlling the second power supply module to output a second voltage.

4. The power supply device according to claim 3, wherein the first control signal is a periodic pulse signal, and the main control module is further configured to:

acquiring a first pulse number of a first control signal received by the first control end;

and adjusting the magnitude of a second voltage output by the second power supply module according to the first pulse number.

5. The power supply device of claim 2, wherein the main control module is further configured to:

and when detecting that the second control signal received by the second control terminal is at a specified level, controlling the third power supply module to output a third voltage.

6. The power supply device according to claim 5, wherein the second control signal is a periodic pulse signal, and the main control module is further configured to:

acquiring a second pulse number of a second control signal received by the second control end;

and adjusting the magnitude of a third voltage output by the third power supply module according to the second pulse number.

7. The power supply device according to claim 1, wherein the second voltage has a value in a range of-6.6V to-1.0V, and the third voltage has a value in a range of 6.9V to 7.9V.

8. The power supply device according to claim 2, wherein the power supply device further comprises a fast charging module, the fast charging module is configured to charge a device to be charged, the second control signal is a periodic pulse signal, and the main control module is further configured to:

if the second pulse quantity is a first numerical value, starting the quick charging module;

and if the second pulse quantity is a second numerical value, closing the quick charging module.

9. An electronic device comprising an organic light emitting diode screen and a power supply device according to any of claims 1 to 8, said power supply device being connected to said organic light emitting diode screen for supplying power to said organic light emitting diode screen.

10. A power supply method applied to the power supply device according to any one of claims 1 to 8, the method comprising:

the main control module controls the first power supply module to output a first voltage and controls the second power supply module to output a second voltage according to a first control signal received by the first control terminal;

and controlling the third power supply module to output a third voltage according to a second control signal received by the second control terminal.