A novel AC-PDP sustain driver based on dual resonance in sustaining mode operation

A novel sustain driver employing an energy recovery faculty is proposed for efficient driving of a plasma display panel (PDP) in the sustaining mode operation. The proposed driver uses dual resonance. One is a main resonance between an inductor and an external capacitor to produce alternative pulses and the other is a subresonance between an inductor and a panel to recover the energy consumption by the capacitive displacement current of the PDP. The operational principle and design procedure of the proposed circuit are presented with theoretical analysis. The validity of the proposed sustain driver is verified through the simulated and experimental results based on a 7.5-in diagonal panel with 200-kHz operating frequency.     

Regenerative power electronics driver for plasma display panel insustain-mode operation

A regenerative power electronic circuit is proposed to drive a plasma display panel (PDP) in sustain-mode operation. This driver utilizes inductors to resonate with the equivalent intrinsic capacitance of the PDP to avoid the abrupt charging/discharging operation. The energy losses due to conventional hardswitching driving and the displacement current of the PDP are mainly recovered. Compared with prior approaches, this driving circuit has a quite simple structure and is suitable for asymmetrical operation     

An energy-recovery sustaining driver with discharge currentcompensation for AC plasma display panel

A novel driver with discharge current compensation is proposed to drive an AC plasma display panel (PDP). This proposed circuit uses resonance between the inductor and the AC PDP to avoid abrupt charging/discharging. The four switches of the full bridge are all operated with zero-voltage-switching turn-on. In addition, an 8-in AC PDP equipped with the proposed driving circuit, operating at 100 kHz, is investigated. With the discharge current compensation, the experimental results show that the proposed driver can maintain the AC PDP to light at lower voltage (129 V)     

AC-PDP新型能量恢复电路的研究

在表面放电式AC-PDP驱动原理的基础上，介绍了一种新型的PDP能量恢复驱动电路。该电路利用PDP的等效固有电容和外加电感器产生谐振，以防止突然的充放电。与以前的能量恢复方法相比较，该电路能更有效地恢复由于传统的硬开关和置换电流引起的能量损失，并且结构简单，可进行不对称操作，更适合于实际应用。     

大屏幕SM-PDP能量复得维持驱动电路系统设计

针对新型结构的荫罩式等离子平板显示器 ( SM-PDP)提出了一种有效的能量复得维持驱动电路方案。从理论上详细分析了电路的工作原理 ,并且介绍了相关金属氧化物半导体场效应管 ( MOSFET)的栅极驱动方法。电路系统通过实验证明 ,利用电感与屏寄生电容之间的串联谐振可以大大减小 PDP屏寄生电容的位移电流在电路上损耗的功耗。此能量复得电路已经在 3 4in全彩色 SM-PDP( 640× RGB× 480 )中得以应用     

Resonant pole inverter to drive the data electrodes of AC plasma display panel

This paper proposes the use of a resonant pole inverter (RPI) as the control circuit to drive the data electrodes of an ac plasma display panel (PDP). This new application of RPI simplifies the circuit design by using fewer components, and has lower power losses than conventional driver circuits. The circuit employs two resonant MOSFETs and zero-voltage-switching technique to generate an asymmetric pulse train with moderate rising and falling time to drive the data electrodes of a PDP. The circuit also recovers the reactive energy from the PDP, like conventional energy recovery circuits. Power losses are further reduced by adding a dc offset voltage to the pulse train. The power consumptions of different driving circuits are assessed. The proposed circuit is tested on a dual-scan 42-in SVGA ac plasma display panel and is found to be practical.     

A Cost-Effective Sustain Power Conversion Scheme for Plasma Display Panels

This paper presents a cost-effective sustain power conversion scheme for the plasma display panel (PDP). A new energy-recovery (ER) circuit is proposed for a low-cost sustain driver. As a parallel-resonant type ER circuit, it can recover the energy stored in the PDP without the interconnection of the sustaining and scanning electrodes. It has a simple structure and fewer power devices, providing a lower cost of production. In addition, a high efficiency sustain power supply is proposed to provide a constant sustain voltage for the sustain driver. It achieves zero-current turn-off of the output diode, alleviating the diode reverse-recovery problems. The sustain power efficiency is increased by reducing the switching power loss. Therefore, the cost and power consumption of the PDP can be improved. The proposed circuits are theoretically analyzed in detail. The experimental results based on a 32-in PDP are presented to confirm the validity of the proposed circuits.     

Cost-Effective Zero-Voltage and Zero-Current Switching Current-Fed Energy-Recovery Display Driver for ac Plasma Display Panel

A new cost-effective zero-voltage and zero-current switching (ZVZCS) current-fed energy-recovery display driver for a plasma display panel (PDP) is proposed. It features a simpler structure, less mass, and lower cost of production. Furthermore, since all power switches are turned on or off under zero-voltage or zero-current switching, it has several favorable advantages such as an improved electromagnetic interference (EMI), low switching losses, and reduced burden on the cooling system. Particularly, since the current source built in the inductor can compensate the large gas-discharge current, main inverter switches have the reduced current stress and turn-on timing margin. Therefore, the undesirable voltage notch problem caused by the improperly controlled gate signal can be solved, which enables the panel to light at lower voltage such as 143 V compared with about 165 V of the prior circuit. To confirm the operation, validity, and features of the proposed circuit, experimental results from a prototype built with 6-in test PDP are presented.     

Cost-effective PDP sustaining driver with current injection method

A new plasma display panel (PDP) sustaining driver using the charge pump technique is proposed. Since this circuit enables low voltage switches to be usable, the cost can be reduced by about 30-40% compared with that of a conventional driver. To recover energy stored in the panel capacitance, a new energy recovery concept of current injection method is adopted to achieve zero-voltage-switching and reduce electromagnetic interference by rejecting the surge current caused by hard switching.     

The current injection method for AC plasma display panel (PDP) sustainer

A new concept of energy recovery for a plasma display panel (PDP) is proposed. Different from conventional LC resonant sustaining drivers, the current built up before inverting the polarity of the panel electrodes is utilized to change the panel polarity together with energy previously charged in panel capacitance. This operation provides zero-voltage switching of switches and reduction of electromagnetic interference by rejecting the surge current when the sustain switches are turned on. The buildup current helps to reduce the transition time of the panel polarity and may produce more stable light waveforms. This method is suitable for a PDP sustaining driver requiring stable light emission characteristic while it maintains low circuit loss like the series-resonant-type energy recovery circuit which is known to be a very effective method.     

AC-PDP能量恢复驱动电路的研究

根据表面放电AC-PDP的特性及驱动原理,提出了一种两级的能量恢复电路,并对电路工作过程进行了详细的分析。通过3种结构的能量恢复电路效率进行的详细比较,本电路相对于一级能量恢复电路来说效率得到了很大的提高,相对于多级能量恢复电路,电路的高压MOS管减少了25%,其他元件也相应减少,效率提高了15%。并通过实验证明了此电路的可用性及实用性。     

IGBT-Based Cost-Effective Energy-Recovery Circuit for Plasma Display Panel

A new insulated-gate-bipolar-transistor (IGBT)-based cost-effective energy-recovery circuit (ERC) for a plasma display panel (PDP) is proposed. Since it is composed of two small resonant inductors and four power diodes instead of the conventional large auxiliary circuit, it features a simpler structure, less mass, fewer power devices, higher efficiency, and lower cost. Since all its power switches are turned off under the zero-current switching operation, IGBTs can be employed as power switches. Moreover, the very stable and uniform light emitted from a PDP proves the high quality of screen. Therefore, it is well suitable for the consumer-affordable hang-on-the-wall TVs which have the desirable features such as thinness, lightness, high efficiency, low price, etc. To confirm the validity of the proposed ERC, a comparative analysis and experimental results based on a whole ac PDP driver equipped with the proposed circuit for the 42-in PDP are presented     

High performance and low-cost single switch energy-recovery sustaining driver for AC plasma display panel

A new energy-recovery sustaining driver for an AC plasma display panel (PDP) is proposed. Since it has only one auxiliary switch compared with the four of the prior circuit, its size and cost can be greatly reduced. Moreover, it features the fast transition time of the panel polarity, fully charged and discharged PDP and soft switching of all power switches.     

High voltage output circuit using n- and n-LDMOSFET with thick gate oxide for PDP driver IC

A novel high voltage output circuit with thick-gated LDMOSFETs is proposed to reduce the chip size and to improve the switching speed for the plasma display panels (PDP) driver IC. The chip size of the PDP driver IC using the proposed output circuit is reduced by 35% with a similar falling time compared with the conventional one. The falling time of the proposed output circuit is about 2.5 times faster than that of the conventional one under the same size when the supply voltage and load capacitance are 180 V and 100 pF, respectively.     

High performance sustaining driver for plasma display panel employing gas-discharge current compensation method

A new sustaining driver for a plasma display panel (PDP) employing a gas-discharge current compensation method is proposed. It features a high performance, zero-voltage-switching, high efficiency, low EMI and high energy-recovery capability. Furthermore, since it compensates for the large gas-discharge current, it enables the PDP to light at a lower voltage than the prior circuit.     

A 2-Gbaud 0.7-V swing voltage-mode driver and on-chip terminatorfor high-speed NRZ data transmission

A large-swing, voltage-mode driver and an on-chip termination circuit are presented for high-speed nonreturn-to-zero (NRZ) data transmission through a copper cable. The proposed driver with active pull-up and pull-down can generate a 700-mV signal to deliver a 2 Gbaud serial NRZ data stream. Low output impedance offered by simple negative-feedback resistors alleviates the detrimental effect of the parasitic capacitance by supplying fast current impulses. A proposed on-chip termination circuit provides termination impedance to a mid-supply termination voltage with the benefit of reduced parasitic capacitance and better termination characteristics compared with off-chip termination. The driver and termination circuits have been incorporated in a 2 Gbaud transceiver chip and fabricated in 0.35 μm CMOS technology. Measurements show a 1.4 V differential swing with a slew rate of 2.5 V/ns at the receiver output and a 65% reduction of reflection by the on-chip termination circuit with power consumption of 191 mW at 3.3 V supply     

An Improved Dual-Path Energy Recovery Circuit Using a Current Source and a Voltage Source for High-Resolution and Large-Sized Plasma Display Panel

An improved dual-path energy recovery circuit (ERC) using a current source and a voltage source for plasma display panel (PDP) is proposed. The proposed ERC uses the voltage source to charge a panel and the current source to discharge the panel. Thus, the proposed circuit can make the panel charge to a sustaining voltage $V_{S}$ and fully discharge to 0 V, and it is possible to achieve zero-voltage switching for all switches in an H-bridge inverter and zero-current switching for all switches in the ERC. Moreover, it has less conduction and switching loss in ERC devices by the dual energy recovery paths for charging and discharging the panel. Furthermore, it has the features of canceling the gas discharge current, high performance, and the low-cost ERC components. The operation principle and features of the proposed ERC are presented in detail and verified with 42-in standard definition (SD) PDP.      

Improved PDP sustainers for reducing current stress and nonlinear effect

This work presents three improved plasma display panel (PDP) sustainers for reducing current stress and nonlinear effect due to parasitic and distributed components. In the paper, a useful cell equivalent circuit model is first introduced to describe the behavior of PDP cell operation, and a widely used sustainer is then reviewed, on which three improved ones are proposed. The proposed sustainers can reduce currents through the switches and nonlinear effect due to parasitic and distributed components along the energy-recovery circuit paths. Derivation and operating principle of the proposed sustainers are addressed in detail. In addition, their related gaseous discharge mechanism in PDP cells is also presented. Hardware measurements have verified the feasibility of the proposed sustainers.     

平板显示器驱动芯片高低电压转换电路

LCD、PDP、VFD等各类平板显示器已越来越受到人们关注与喜爱,但大多数平板显示器需要专用的功率驱动芯片来驱动其发光显示,各类专用功率驱动芯片又离不开高低电压转换电路,高低电压转换电路性能的好坏直接影响到驱动芯片的稳定性和功耗等。通过比较平板显示器驱动芯片的几种典型高低压转换电路,设计出一种带有电流源的CMOS型高低压转换电路,它具有最佳的性能指标,该电路不但可以为平板显示器驱动芯片使用,还可以作为其他各类驱动芯片的高低压转换模块使用,最后给出一种具体的平板显示驱动芯片高压CMOS器件结构。     

High-Performance and Low-Cost Single-Switch Current-Fed Energy Recovery Circuit for ac Plasma Display Panel

A high-performance and low-cost single-switch current-fed energy recovery circuit (ERC) for an alternating current (ac) plasma display panel (PDF) is proposed. Since it is composed of only one power switch compared with the conventional circuit consisting of four power switches and two large energy recovery capacitors, it features a much simpler structure and lower cost. Furthermore, since all power switches can be switched under soft-switching operation, the proposed circuit has desirable merits such as an increased reliability, and low switching loss. Especially, there are no serious voltage notches across the PDP with the aid of gas discharge current compensation, which can greatly reduce the current stress of all inverter switches, and provide those switches with the turn on timing margin. To confirm the validity of the proposed circuit, its operation and performance were verified on a prototype for 7-in test PDP.