CN104935161A - Timing control (TCON) power supply management circuit for onboard display screen - Google Patents
Timing control (TCON) power supply management circuit for onboard display screen Download PDFInfo
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- CN104935161A CN104935161A CN201510377828.3A CN201510377828A CN104935161A CN 104935161 A CN104935161 A CN 104935161A CN 201510377828 A CN201510377828 A CN 201510377828A CN 104935161 A CN104935161 A CN 104935161A
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Abstract
The invention discloses a timing control (TCON) power supply management circuit for an onboard display screen. The TCON power supply management circuit is characterized by comprising a power supply conversion chip U1, wherein the power supply conversion chip U1 is connected with peripheral circuits respectively. Through the adoption of the above circuit structure, the TCON power supply management circuit has the advantages of high universality, simplicity in the structures of the peripheral circuits, high output power and high integration, the area of a printed circuit board (PCB) and the design cost are greatly reduced, and the reliability and the universality of the TCON power supply management circuit for the high-resolution onboard display screen are improved.
Description
Technical field
The present invention relates to the power circuit of airborne display screen, particularly a kind of TCON electric power management circuit for airborne display screen.
Background technology
In recent years, along with developing rapidly of flat panel display equipment and avionics, the airborne display screen of high-resolution emerged in an endless stream, and this just requires TFT-LCD driving control system and Power Management Unit is more and more reliable and highly integrated.Meanwhile, in avionics display system, also necessarily require Power Management Unit can not be very complicated, reduce the complexity of Power Management Design.
At present, although existing airborne TFT-LCD display adopts digital technology, the power supply needed for its system itself not only comprises the logic power of digital IC, also has the high-low pressure AC-battery power source that analog IC needs.This kind of display screen great majority adopt TCON electric power management circuit to provide stable power supply, and it is large that existing TCON electric power management circuit exists volume weight, and peripheral component is many, and loss is large, the defect that power output is little.Along with liquid crystal panel constantly increases, and the requirement of the various aspects development trend such as low-power consumption, low cost, high integration, TCON Power Management Unit have impact on display performance and the cost of whole TFT-LCD product to a great extent as the power supply plan module of TFT-LCD panel.
For the problems referred to above, specially for the airborne display screen of high-resolution provides a kind of TCON electric power management circuit, improve power output, reducing outer member is the problem that prior art needs to solve.
Summary of the invention
Technical problem to be solved by this invention is, provides a kind of TCON electric power management circuit for airborne display screen, to reach raising power output, reduces the object of outer member.
For achieving the above object, technical scheme of the present invention is, a kind of TCON electric power management circuit for airborne display screen, is characterized in that: described electric power management circuit comprises power conversion chip U1 and connects peripheral circuit respectively; Wherein the C2P pin of power conversion chip U1 is electrically connected the C2N pin of power conversion chip U1 via electric capacity C4, the SUP pin of power conversion chip U1 is electrically connected electric capacity C16, C8, C9, C10, C11, one end of fuse F2 and diode D1 negative electrode, and the other end electrical ground of electric capacity C16, C8, C9, C10, C11 and diode D1 anode are electrically connected inductance L 1 and are electrically connected the SW pin of power conversion chip U1; The CTRL pin of power conversion chip U1 is electrically connected resistance R3, and the resistance R3 other end is electrically connected logic control input, logic level 3.3V; The DRVN pin of power conversion chip chip U1 is electrically connected electric capacity C13, the electric capacity C13 other end is electrically connected diode D2 anode and diode D3 negative electrode, and diode D2 negative electrode electrical ground, diode D3 anode is electrically connected resistance R13 and is electrically connected electric capacity C15, C16 and fuse F4 one end, and electric capacity C15, C16 other end electrical ground, fuse F4 is electrically connected VDA; The 21st pin FBN of power conversion chip U1 is electrically connected resistance R13 and R14 one end, the resistance R13 other end is electrically connected diode D3 anode and is electrically connected electric capacity C15, C16 and fuse F4 one end, and the other end of resistance R14 is electrically connected the REF pin of electric capacity C14 and power conversion chip U1; The VIN pin of power conversion chip U1 is electrically connected the EN pin of one end of electric capacity C1 and electric capacity C2, one end of inductance L 1, one end of fuse F1 and power conversion chip U1, and the other end electrical ground of electric capacity C1 and electric capacity C2, inductance L 1 other end is electrically connected the anode of diode D1 and is electrically connected the SW pin of power conversion chip U1; The RHVS pin of power conversion chip U1 is electrically connected resistance R11 one end, the resistance R11 other end being electrically connected property contact resistance R9 and resistance R10; The 33rd pin COMP of U1 is electrically connected resistance R1 one end, and the resistance R1 other end is electrically connected electric capacity C3 one end, and electric capacity C3 other end electrical ground; The FB pin of power conversion chip U1 is electrically connected one end of resistance R9, resistance R10 and resistance R11, and the resistance R9 other end is electrically connected diode D1 negative electrode, resistance R10 other end electrical ground, and resistance R11 is electrically connected at the RHVS pin of power conversion chip U1; The VGH pin of power conversion chip U1 is electrically connected one end of fuse F3, and the other end of fuse F3 is electrically connected electric capacity C15, and electric capacity C15 other end electrical ground; The FBP pin of power conversion chip U1 is electrically connected one end of resistance R13 and resistance R14, and the resistance R13 other end is electrically connected the anode of diode D3, and the resistance R14 other end is electrically connected electric capacity C14, and electric capacity C14 other end electrical ground; The C1P pin of power conversion chip U1 is electrically connected electric capacity C12, and the electric capacity C12 other end is electrically connected the C1N pin of power conversion chip U1.
The model of described power conversion chip U1 is the model that TI company produces is the chip of TPS65165RSBR.
The BGND pin of described power conversion chip U1, AGND pin, PGND pin electrical ground.
The ADLY pin of described power conversion chip U1 is electrically connected electric capacity C5, electric capacity C5 other end electrical ground; The GDLY pin of power conversion chip U1 is electrically connected electric capacity C6, electric capacity C6 other end electrical ground; The HVS pin of power conversion chip U1 is electrically connected resistance R2, resistance R2 other end electrical ground; The SS pin of power conversion chip U1 is electrically connected electric capacity C7, electric capacity C7 other end electrical ground; The DRN pin of power conversion chip U1 is electrically connected resistance R1 one end, resistance R1 other end electrical ground.
The three-way power that described electric power management circuit exports is respectively:
by selecting resistance R9, R10 resistance, can obtain the voltage required for liquid crystal display screen VDA;
by selecting resistance R11, R12 resistance, can obtain the voltage required for liquid crystal display screen VGH;
by selecting resistance R13, R14 resistance, can obtain the voltage required for liquid crystal display screen VGL.
A kind of TCON electric power management circuit for airborne display screen, owing to adopting above-mentioned circuit structure, highly versatile, circuit structure are peripheral simply, power output is large, integrated level is high, significantly reduce PCB surface to amass and design cost, improve reliability and the versatility of high-resolution airborne display screen TCON electric power management circuit.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation;
Fig. 1 is the circuit diagram of a kind of TCON electric power management circuit for airborne display screen of the present invention.
Embodiment
There is volume weight greatly to solve existing TCON electric power management circuit in the present invention, peripheral component is many, and loss is large, and the defect that power output is little, the invention provides a kind of high-resolution airborne display screen TCON electric power management circuit.
Specifically as shown in Figure 1, high-resolution provided by the invention airborne display screen TCON electric power management circuit.In the present embodiment, power conversion chip U1 is TPS65165RSBR, and the port of this chip TPS65165RSBR is electrically connected with resistance, electric capacity, diode and inductance respectively.The peripheral circuit of power conversion chip U1 comprises resistance R1 ~ R14; Electric capacity C1 ~ C16; Fuse F1 ~ F4; Diode D1, D2, D3; Inductance L 1.
This chip U1 the 1st pin C2P is electrically connected U1 the 2nd pin C2N via electric capacity C4, the 3rd pin BGND electrical ground of chip U1, the 4th pin SUP of chip U1 is electrically connected one end and the diode D1 negative electrode of electric capacity C16, C8, C9, C10, C11, F2, and the other end electrical ground of electric capacity C16, C8, C9, C10, C11 and diode D1 anode be electrically connected inductance L 1 and be electrically connected chip U1 the 29th, 30 pins; The 5th pin POS1 floating of chip U1, does not connect; The 6th pin NEG1 floating of chip U1, does not connect; The 7th pin OUT1 floating of chip U1, does not connect; The 8th pin OUT2 floating of chip U1, does not connect; The 9th pin NEG2 floating of chip U1, does not connect; The 10th pin POS2 floating of chip U1, does not connect; The 11st pin POS3 floating of chip U1, does not connect; The 12nd pin OUT3 floating of chip U1, does not connect; 13rd, 19,26, the 31 pin NC floatings of chip U1, do not connect; The 14th pin ADLY of chip U1 is electrically connected electric capacity C5, electric capacity C5 other end electrical ground; The 15th pin GDLY of chip U1 is electrically connected electric capacity C6, electric capacity C6 other end electrical ground; The 16th pin CTRL of chip U1 is electrically connected resistance R3, and the resistance R3 other end is electrically connected logic control input, logic level 3.3V; The 17th pin HVS of chip U1 is electrically connected resistance R2, resistance R2 other end electrical ground; The 18th pin DRVN of chip U1 is electrically connected electric capacity C13, the electric capacity C13 other end is electrically connected diode D2 anode and diode D3 negative electrode, and diode D2 negative electrode electrical ground, diode D3 anode is electrically connected resistance R13 and is electrically connected electric capacity C15, C16 and fuse F4 one end, and electric capacity C15, C16 other end electrical ground, fuse F4 is electrically connected VDA; The 20th pin SS of chip U1 is electrically connected electric capacity C7, electric capacity C7 other end electrical ground; The 21st pin FBN of chip U1 is electrically connected resistance R13 and R14 one end, the resistance R13 other end is electrically connected diode D3 anode and is electrically connected electric capacity C15, C16 and fuse F4 one end, and the other end of resistance R14 is electrically connected the 22nd pin REF of electric capacity C14 and chip U1; The 23rd pin AGND electrical ground of chip U1; The 24th pin VIN of chip U1 is electrically connected the 25th pin EN of one end of electric capacity C1 and electric capacity C2, one end of inductance L 1, one end of fuse F1 and chip U1, and the other end electrical ground of electric capacity C1 and electric capacity C2, the 29th, 30 pin SW of anode and electric connection chip U1 that inductance L 1 other end is electrically connected diode D1 hold; The electrical connection of 25th pin EN of chip U1 is with the 24th pin of chip U1; 27th, the 28 pin PGND electrical ground of chip U1; 29th, the 30 pin SW of chip U1 are electrically connected one end of inductance L 1 and are electrically connected the anode of diode D1; The 32nd pin RHVS of chip U1 is electrically connected resistance R11 one end, the resistance R11 other end being electrically connected property contact resistance R9 and resistance R10; The 33rd pin COMP of U1 is electrically connected resistance R1 one end, and the resistance R1 other end is electrically connected electric capacity C3 one end, and electric capacity C3 other end electrical ground; The 34th pin FB of U1 is electrically connected one end of resistance R9, resistance R10 and resistance R11, and the resistance R9 other end is electrically connected diode D1 negative electrode, resistance R10 other end electrical ground, and resistance R11 is electrically connected at the 32nd pin RHVS of chip U1; The 35th pin VGH of chip U1 is electrically connected one end of fuse F3, and the other end of fuse F3 is electrically connected electric capacity C15, and electric capacity C15 other end electrical ground and VGH; The 36th pin DRN of chip U1 is electrically connected resistance R1 one end, resistance R1 other end electrical ground; The 37th pin FBP of chip U1 is electrically connected one end of resistance R13 and resistance R14, and the resistance R13 other end is electrically connected the anode of diode D3, and the resistance R14 other end is electrically connected electric capacity C14, and electric capacity C14 other end electrical ground; The 38th pin POUT of chip U1 is electrically connected resistance R11 one end, and the resistance other end is electrically connected resistance R12 and chip U1 the 37th pin; The 39th pin C1P of chip U1 is electrically connected electric capacity C12, and the electric capacity C12 other end is electrically connected the 40th pin C1N of chip U1; The 40th pin C1N of chip U1 is electrically connected electric capacity C12, and the electric capacity C12 other end is electrically connected the 39th pin C1P of chip U1.
It is negative terminal that C2N is positive charge pump 2 flying capacitor in Fig. 1; C2P is the anode of positive charge pump 2 flying capacitor; BGND is that the low noise of operational amplifier is low; SUP is the energization input of operational amplifier and charge pump; POS1 is the positive input terminal of operational amplifier 1; NEG1 is the negative input end of operational amplifier 1; OUT1 is the output of operational amplifier 1; OUT2 is the output of operational amplifier 2; NEG2 is the negative input end of operational amplifier 2; POS2 is the positive input terminal of operational amplifier 2; POS3 is the positive input terminal of operational amplifier 3; OUT3 is the output of operational amplifier 3; NC is not for connect; ADLY is boosting, the enable adjustment input of positive and negative charge pump delay time; GDLY is the enable adjustment input of high pressure delay time; CTRL is internal high pressure switching logic control input end; HVS is high pressure test logic control input end; DRVL is the driving pin producing the conversion of VGL negative charge pump; SS is the soft start end producing VDA boost conversion; FBN is negative charge pump conversion feedback end; REF is with reference to output; AGND be in analog and positive and negative charge pump ground; VIN is ic power input; EN is integrated circuit Enable Pin; PGND is boost conversion power supply ground; SW is the switch terminals producing VDA booster regulator; RHVS is that boost converter voltage arranges end; COMP compensates end for producing VDA boost conversion; FB is for producing VDA boost conversion feedback end; VGH is internal high pressure switching voltage output; DRN is that grid voltage is released end; FBP is for producing VGH positive charge pump converter feedback end; POUT is positive charge pump output; C1P is the anode of positive charge pump 1 flying capacitor; C1N is the negative terminal of positive charge pump 1 flying capacitor.
Three kinds of voltage computing formula that the present invention exports are:
by selecting resistance R9, R10 resistance, can obtain the voltage required for liquid crystal display screen VDA.
by selecting resistance R11, R12 resistance, can obtain the voltage required for liquid crystal display screen VGH.
by selecting resistance R13, R14 resistance, can obtain the voltage required for liquid crystal display screen VGL.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the various improvement that technical solution of the present invention is carried out, or directly apply to other occasion, all within protection scope of the present invention without improving.
Claims (5)
1. for a TCON electric power management circuit for airborne display screen, it is characterized in that: described electric power management circuit comprises power conversion chip U1 and connects peripheral circuit respectively; Wherein the C2P pin of power conversion chip U1 is electrically connected the C2N pin of power conversion chip U1 via electric capacity C4, the SUP pin of power conversion chip U1 is electrically connected electric capacity C16, C8, C9, C10, C11, one end of fuse F2 and diode D1 negative electrode, and the other end electrical ground of electric capacity C16, C8, C9, C10, C11 and diode D1 anode are electrically connected inductance L 1 and are electrically connected the SW pin of power conversion chip U1; The CTRL pin of power conversion chip U1 is electrically connected resistance R3, and the resistance R3 other end is electrically connected logic control input, logic level 3.3V; The DRVN pin of power conversion chip chip U1 is electrically connected electric capacity C13, the electric capacity C13 other end is electrically connected diode D2 anode and diode D3 negative electrode, and diode D2 negative electrode electrical ground, diode D3 anode is electrically connected resistance R13 and is electrically connected electric capacity C15, C16 and fuse F4 one end, and electric capacity C15, C16 other end electrical ground, fuse F4 is electrically connected VDA; The 21st pin FBN of power conversion chip U1 is electrically connected resistance R13 and R14 one end, the resistance R13 other end is electrically connected diode D3 anode and is electrically connected electric capacity C15, C16 and fuse F4 one end, and the other end of resistance R14 is electrically connected the REF pin of electric capacity C14 and power conversion chip U1; The VIN pin of power conversion chip U1 is electrically connected the EN pin of one end of electric capacity C1 and electric capacity C2, one end of inductance L 1, one end of fuse F1 and power conversion chip U1, and the other end electrical ground of electric capacity C1 and electric capacity C2, inductance L 1 other end is electrically connected the anode of diode D1 and is electrically connected the SW pin of power conversion chip U1; The RHVS pin of power conversion chip U1 is electrically connected resistance R11 one end, the resistance R11 other end being electrically connected property contact resistance R9 and resistance R10; The 33rd pin COMP of U1 is electrically connected resistance R1 one end, and the resistance R1 other end is electrically connected electric capacity C3 one end, and electric capacity C3 other end electrical ground; The FB pin of power conversion chip U1 is electrically connected one end of resistance R9, resistance R10 and resistance R11, and the resistance R9 other end is electrically connected diode D1 negative electrode, resistance R10 other end electrical ground, and resistance R11 is electrically connected at the RHVS pin of power conversion chip U1; The VGH pin of power conversion chip U1 is electrically connected one end of fuse F3, and the other end of fuse F3 is electrically connected electric capacity C15, and electric capacity C15 other end electrical ground; The FBP pin of power conversion chip U1 is electrically connected one end of resistance R13 and resistance R14, and the resistance R13 other end is electrically connected the anode of diode D3, and the resistance R14 other end is electrically connected electric capacity C14, and electric capacity C14 other end electrical ground; The C1P pin of power conversion chip U1 is electrically connected electric capacity C12, and the electric capacity C12 other end is electrically connected the C1N pin of power conversion chip U1.
2. a kind of TCON electric power management circuit for airborne display screen according to claim 1, is characterized in that: the model of described power conversion chip U1 is the model that TI company produces is the chip of TPS65165RSBR.
3. a kind of TCON electric power management circuit for airborne display screen according to claim 1, is characterized in that: the BGND pin of described power conversion chip U1, AGND pin, PGND pin electrical ground.
4. a kind of TCON electric power management circuit for airborne display screen according to claim 1, is characterized in that: the ADLY pin of described power conversion chip U1 is electrically connected electric capacity C5, electric capacity C5 other end electrical ground; The GDLY pin of power conversion chip U1 is electrically connected electric capacity C6, electric capacity C6 other end electrical ground; The HVS pin of power conversion chip U1 is electrically connected resistance R2, resistance R2 other end electrical ground; The SS pin of power conversion chip U1 is electrically connected electric capacity C7, electric capacity C7 other end electrical ground; The DRN pin of power conversion chip U1 is electrically connected resistance R1 one end, resistance R1 other end electrical ground.
5. a kind of TCON electric power management circuit for airborne display screen according to claim 1, is characterized in that: the three-way power that described electric power management circuit exports is respectively:
by selecting resistance R9, R10 resistance, can obtain the voltage required for liquid crystal display screen VDA;
by selecting resistance R11, R12 resistance, can obtain the voltage required for liquid crystal display screen VGH;
by selecting resistance R13, R14 resistance, can obtain the voltage required for liquid crystal display screen VGL.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510377828.3A CN104935161A (en) | 2015-06-27 | 2015-06-27 | Timing control (TCON) power supply management circuit for onboard display screen |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510377828.3A CN104935161A (en) | 2015-06-27 | 2015-06-27 | Timing control (TCON) power supply management circuit for onboard display screen |
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| CN104935161A true CN104935161A (en) | 2015-09-23 |
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| CN201510377828.3A Pending CN104935161A (en) | 2015-06-27 | 2015-06-27 | Timing control (TCON) power supply management circuit for onboard display screen |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108182913A (en) * | 2017-12-26 | 2018-06-19 | 中航华东光电有限公司 | The airborne display screen TCON electric power management circuits of high-resolution |
| CN110808016A (en) * | 2019-09-23 | 2020-02-18 | 惠州高盛达科技有限公司 | TCON drive circuit applied to notebook computer |
| CN111276098A (en) * | 2020-03-24 | 2020-06-12 | 京东方科技集团股份有限公司 | AMOLED display device and power supply control system thereof |
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| CN102270443A (en) * | 2011-08-15 | 2011-12-07 | 南京中电熊猫液晶显示科技有限公司 | Output image noise reduction method applied to thin-film field-effect transistor liquid crystal display |
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2015
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102270443A (en) * | 2011-08-15 | 2011-12-07 | 南京中电熊猫液晶显示科技有限公司 | Output image noise reduction method applied to thin-film field-effect transistor liquid crystal display |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108182913A (en) * | 2017-12-26 | 2018-06-19 | 中航华东光电有限公司 | The airborne display screen TCON electric power management circuits of high-resolution |
| CN110808016A (en) * | 2019-09-23 | 2020-02-18 | 惠州高盛达科技有限公司 | TCON drive circuit applied to notebook computer |
| CN111276098A (en) * | 2020-03-24 | 2020-06-12 | 京东方科技集团股份有限公司 | AMOLED display device and power supply control system thereof |
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