CN201207710Y - Communication terminal and communication device - Google Patents

Abstract

The utility model belongs to the communication field, providing a communication terminal and a communication device. The communication terminal comprises a working module with high instantaneous power consumption, which is directly connected with a first path of output voltage of a power supply, a boosting control circuit, which is connected with a second path of output voltage of the power supply and supplies power to other working modules except the working module with high instantaneous power consumption after boosting the second path of output voltage. In the utility model, the working module with high instantaneous power consumption of the communication terminal is directly connected with the first path of output voltage and other working modules are connected with the second path of output voltage through the boosting control circuit integrated in the communication terminal, avoiding the power-off phenomenon of the communication terminal due to the inadequate instantaneous power supply.

Description

A communication terminal and a communication device

technical field

The utility model belongs to the communication field, in particular to a communication terminal and a communication device.

Background technique

Lithium batteries have the advantages of large capacity, light weight, and no memory effect. Existing mobile phones are powered by lithium batteries, but lithium batteries also have many shortcomings, such as poor safety performance, short circuit, and easy explosion when heated. Compared with lithium batteries, iron batteries have the advantages of low cost and good safety performance. Since the positive electrode materials used in iron batteries and lithium batteries are different, the insertion and extraction voltages are also different, so the output voltages of iron batteries and lithium batteries are different. The power supply requirement is between 3.3V-4.2V. Therefore, iron batteries cannot directly supply power to mobile phones like lithium batteries, and need to be boosted.

In the prior art, generally according to a certain ratio, such as a ratio of 1.12 times, the output voltage of the iron battery is generally boosted, and the 2.8V-3.8V output voltage of the iron battery is raised to 3.1V-4.2V voltage output, so as to To meet the requirements of power supply for mobile phones. Since the maximum output current of the boosted iron battery is 1.8A, the maximum current of the working modules with large instantaneous power consumption such as the radio frequency power amplifier of the mobile phone is above 2A, so there will be a phenomenon of instantaneous insufficient power supply, which will cause the mobile phone to suddenly drop. Especially in the case of poor mobile phone signal, the phenomenon of power failure will increase significantly.

Utility model content

The purpose of the utility model is to provide a communication terminal, aiming at solving the problem of the single output voltage power supply of the existing mobile phone, which causes the power failure of the mobile phone due to the instantaneous insufficient power supply.

The utility model is realized in this way, a kind of communication terminal, described communication terminal comprises:

The working module with large instantaneous power consumption is directly connected to the first output voltage of the power supply; and

The boost control circuit is connected to the second output voltage of the power supply, and after boosting the second output voltage, supplies power to the working modules other than the working modules with large instantaneous power consumption.

Another object of the present utility model is to provide a communication device, including an iron battery for power supply, and a communication terminal connected to the iron battery, and the communication terminal includes:

The working module with large instantaneous power consumption is directly connected to the first output voltage of the power supply; and

The boost control circuit is connected to the second output voltage of the power supply, and after boosting the second output voltage, supplies power to the working modules other than the working modules with large instantaneous power consumption.

In the utility model, the working modules with large instantaneous power consumption of the communication terminal are directly connected to the first output voltage of the power supply, and the other working modules are connected to the second output voltage of the power supply through the boost control circuit integrated in the communication terminal, thus avoiding Instantaneous insufficient power supply causes the communication terminal to lose power.

Description of drawings

Fig. 1 is a structural diagram of a communication terminal provided by an embodiment of the present invention;

Fig. 2 is a circuit structure diagram of a boost control circuit in a communication terminal provided by an embodiment of the present invention;

Fig. 3 is an example structural diagram of a mobile phone provided by an embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

In the embodiment of the utility model, by integrating the boost control circuit on the main board of the communication terminal, the communication terminal has two output voltages for power supply, and one of the output voltages directly supplies power to the working module of the communication terminal that consumes a lot of power instantaneously, avoiding the instantaneous Insufficient power supply causes the communication terminal to lose power.

FIG. 1 shows a structural diagram of a communication terminal provided by an embodiment of the present invention. For convenience of description, only parts related to the embodiment of the present invention are shown.

A power supply, such as an iron battery, provides two output voltages for the communication terminal 1, wherein the first output voltage A is directly connected to the working module 13 of the communication terminal that consumes a lot of power instantaneously, and supplies power to the working module 13 of the communication terminal that consumes a lot of power instantaneously. The two output voltages B are boosted by the boost control circuit 11 in the communication terminal 1 to supply power to other working modules 12 of the communication terminal 1 . The other working modules 12 are working modules other than the working module 13 with large instantaneous power consumption.

The input terminal of the boost control circuit 11 is connected to the second output voltage B to boost the second output voltage B, and its output terminal is connected to other working modules 12 with small instantaneous power consumption in the communication terminal 1 to supply other working modules 12 of the communication terminal. Module 12 supplies power.

In the embodiment of the present invention, the circuit structure of the boost control circuit 11 is shown in FIG. 2 , including a boost circuit 111 and a boost conversion control unit 112 that controls the boost circuit 111 to store/release energy.

The boost circuit 111 includes a switch tube Q1, a switch tube Q2, a resistor R and an energy storage element L, and the energy storage element L in the embodiment of the present invention is an inductor. The first terminal 1 of the energy storage element L is electrically connected to the positive pole B+ of the power supply terminal of the second output voltage B through a resistor R, and the second terminal 2 of the energy storage element L is connected to the positive voltage output terminal of the boost control circuit 11 through a switch tube Q1. Pole P+ is also grounded through the switch tube Q2, the control terminal g of the switch tube Q1 is connected to the energy release control terminal Pdrv in the boost conversion control unit 112; Can control side Ndrv connection. In the embodiment of the utility model, the switch tube Q1 is a PMOS tube, and the switch tube Q2 is an NMOS tube.

The boost conversion control unit 112 includes: a power supply terminal VB connected to the positive pole B+ of the power supply terminal of the second output voltage B; an output voltage detection terminal VP connected to the positive pole P+ of the voltage output terminal of the boost control circuit 11 to detect the boost control The voltage Vp at the output end of the circuit; the energy release control terminal Pdrv is connected to the control terminal g of the switch tube Q1 to control the conduction or shutdown of the switch tube Q1; the energy storage control terminal Ndrv is connected to the control terminal g of the switch tube Q2 to control The switch tube Q2 is turned on or off; the current detection terminal Isense is connected to any end of the energy storage element L, and the boost conversion control unit 112 detects the current on the energy storage element L through this port, so as to pass the energy release control terminal Pdrv and the energy storage control terminal Ndrv control the switching states of the switching tubes Q1 and Q2; The positive pole of the output terminal P+ is connected to the ground; the negative pole VSSB of the protection circuit in the boost conversion control unit 112 and the negative pole VSSA of the control module are both grounded; the drive signal input terminal RUN_A is connected to the positive pole B+ of the power supply terminal of the second output voltage B, The drive signal input terminal RUN-A inputs a drive signal from the second voltage, and the drive signal is used as an enable signal of the boost conversion control unit 112 to drive the boost conversion control unit 112 to work.

The switch tube Q2 and the switch tube Q1 are turned on alternately during the working process of the boost control circuit 11. In each output duty cycle, the boost conversion control unit 112 controls the switch tube Q2 to be turned on through its energy storage control terminal Ndrv, and the second The positive pole B+ of the power supply terminal of the first output voltage B, the resistor R, the energy storage element L, the switch tube Q2 and the ground form a path. During this process, the current on the energy storage element L continues to increase, and the electric energy of the second output voltage B It is continuously converted into magnetic energy and stored in the energy storage element L. When the boost conversion control unit 112 detects through its current detection terminal Isense that the current of the energy storage element L has reached the current peak value set inside the boost conversion control unit 112, the boost conversion control unit 112 then through its energy storage control terminal Ndrv turns off the switch tube Q2, and at the same time turns on the switch tube Q1 through the energy release control terminal Pdrv. At this time, the positive pole B+ of the power supply terminal of the second output voltage B, the resistor R, the energy storage element L, the switch tube Q1 and the boost control circuit 11 The positive pole P+ of the voltage output terminal forms a path. In the process of switching between the switching tube Q2 and the switching tube Q1, due to the freewheeling effect of the energy storage element L, the potential of the positive pole B+ of the power supply terminal higher than the second output voltage B will be generated on the node SW, and the second output The potential of the positive pole B+ of the power supply terminal of the voltage B and the potential stored in the energy storage element L are superimposed and then output by the positive pole P+ of the voltage output terminal of the voltage boost control circuit 11 through the switch tube Q1, so as to achieve a boost through repeated energy storage/release processes. pressure purpose.

During the working process of the communication terminal, the boost conversion control unit 112 compares its input voltage Vb with the output voltage Vp of the boost control circuit 11. Taking the boost multiple of 1.12 times as an example, when Vp>1.12Vb, the boost When the output voltage Vp of the voltage control circuit 11 is greater than 1.12 times the input voltage Vb of the boost control circuit 11, the boost control circuit 11 works in a boost state, and after the input voltage Vb is boosted by a certain ratio through the boost circuit 111, Then, the boost conversion control unit 112 supplies power to the corresponding working modules in the communication terminal; if Vp≤1.12Vb, the power supply of the input voltage Vb is insufficient, and the boost control circuit 11 stops the boost conversion.

In the embodiment of the present utility model, the boost conversion control unit 112 may be an IC of the type BF1250 produced by BYD Company.

Taking a mobile phone as an example, FIG. 3 shows the structure of the mobile phone provided by the embodiment of the present invention. For the convenience of description, only the parts related to the embodiment of the present invention are shown.

The iron battery provides two-way output voltage power supply to the mobile phone. The first output voltage A is 2.8V-3.8V, which directly supplies power to the radio frequency power amplifier module 33 in the mobile phone 3. The working voltage of the radio frequency power amplifier module 33 is 2.9V-4.5V V, when the first output voltage A is above 2.9V, the RF power amplifier module 33 can work normally, avoiding the problem of power-off of the mobile phone caused by the insufficient output current of the boost control circuit 31.

The second road output voltage B is 2.8V-3.8V, after the step-up control circuit 31 boosts, output the voltage of 3.1V-4.2V, supply power to other working modules 32 with smaller instantaneous current in the mobile phone, such as CPU, voltage Management module, bluetooth, radio, backlight circuit, motor, etc., the total current of these working modules is between 0.4A-0.5A when they work normally, and the maximum output current of the boost control circuit 31 is 1.8A, which can fully meet the requirements of these working modules. power supply requirements.

In the embodiment of the utility model, the working module with large instantaneous power consumption of the communication terminal is directly connected to the first output voltage of the power supply, and the other working modules are connected to the second output voltage of the power supply through the boost control circuit integrated in the communication terminal. It avoids the phenomenon that the communication terminal loses power due to the instantaneous insufficient power supply.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (6)

1. A communication terminal, characterized in that the communication terminal comprises: The working module with large instantaneous power consumption is directly connected to the first output voltage of the power supply; and The boost control circuit is connected to the second output voltage of the power supply, and after boosting the second output voltage, supplies power to the working modules other than the working modules with large instantaneous power consumption. 2. The communication terminal according to claim 1, wherein the boost control circuit comprises: a boost circuit, the input end of which is connected to the second output voltage, and boosts the second output voltage; and A boost conversion control unit that controls the boost circuit to store/discharge energy. 3. The communication terminal according to claim 2, wherein the boost circuit comprises: energy storage elements; and The first switch and the second switch tube that are alternately turned on are controlled by the boost conversion control unit according to the current change of the energy storage element; The first end of the energy storage element is electrically connected to the positive pole of the second output voltage power supply terminal through a resistor, and the second end is connected to the positive pole of the voltage output terminal of the boost control circuit through the first switch tube. The two ends are also grounded through the second switch tube; The control terminal of the first switching tube is connected to the energy release control terminal in the boost conversion control unit; The control terminal of the second switch tube is connected to the energy storage control terminal in the boost conversion control unit. 4. A communication device, comprising an iron battery for power supply, and a communication terminal connected to the iron battery, characterized in that the communication terminal includes: The working module with large instantaneous power consumption is directly connected to the first output voltage of the power supply; and The boost control circuit is connected to the second output voltage of the power supply, and after boosting the second output voltage, supplies power to the working modules other than the working modules with large instantaneous power consumption. 5. The communication device according to claim 4, wherein the boost control circuit comprises: a boost circuit, the input end of which is connected to the second output voltage, and boosts the second output voltage; and A boost conversion control unit that controls the boost circuit to store/discharge energy. 6. The communication device according to claim 5, wherein the boost circuit comprises: energy storage elements; and The first switch and the second switch tube that are alternately turned on are controlled by the boost conversion control unit according to the current change of the energy storage element; The first end of the energy storage element is electrically connected to the positive pole of the second output voltage power supply terminal through a resistor, and the second end is connected to the positive pole of the voltage output terminal of the boost control circuit through the first switch tube. The two ends are also grounded through the second switch tube; The control terminal of the first switching tube is connected to the energy release control terminal in the boost conversion control unit; The control terminal of the second switch tube is connected to the energy storage control terminal in the boost conversion control unit.

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