A novel energy-recovery sustaining driver for plasma display panel

A novel energy-recovery driver is proposed to drive a plasma display panel (PDP) in the sustaining operation. The proposed circuit uses the parallel resonance between the inductor and the intrinsic capacitance of PDP to mainly recover the energy lost by the capacitive displacement current of the PDP. The parasitic resonance caused by the parasitic inductance and the stray capacitance is prevented greatly. A 34-in AC PDP equipped with the proposed driving circuit, operated at 100 kHz, is investigated. In addition, some prior work is shown in this paper for comparison, in which the power consumption of driving the same 34-in panel is measured. The experimental results show that the proposed driver has a low-cost structure and better performance than the prior ones.     

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)     

An advanced sustaining technology for plasma display panel using voltage-balancing method

A cost-effective plasma display panel (PDP) sustainer employing current injection method (CIM) for energy recovery is proposed. Using a voltage-balancing technique, driver cost can be reduced by about 20%-30% compared with that of the conventional H-bridge driver by using low-voltage switches. The energy recovery performance can be improved by the current that is built up before the energy recovery operation. This buildup current is utilized to change the polarity of the panel electrode and provides additional variable to determine pulse slopes. Experimental results show that the voltage stress of switches connected in series is identically clamped to sustain voltage during sustain operation and that light is emitted more stably by independent control of the rising and falling slopes using CIM. Therefore, the proposed sustainer is expected to be suitable for a low-cost PDP sustaining driver requiring stable discharge characteristics.     

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.     

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     

Three-Level Capacitor Clamping Single Sustaining Driver With Dual Energy Recovery Path for Low Cost AC Plasma Display Panel

This paper proposes a novel single sustaining driver with half the device voltage stresses for plasma display panel (PDP). Since proposed driver lowers the voltage stress of sustain switches by series-connected configuration of switches and clamping capacitor between switches, it uses half voltage rating of sustain switches and, thus, reduces the conduction loss of power switches compared with those of the conventional single sustaining driver. Despite device count possibly increasing, by using low voltage switches and capability to produce zero voltage level in sustaining inverter, the circuit cost does not increase compared with the conventional. In addition, the proposed driver has two energy recovery inductors that are utilized to separate the energy recovery path. This feature reduces the power loss of energy recovery circuit (ERC), which gives an improvement in system efficiency. A comparative analysis and experimental results are presented to show the validity of the proposed single sustaining driver.     

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.     

A new sustainer by using clamping RC components for AC plasma display panels

A new sustain driver with an energy recovery circuit for ac plasma display panels is proposed. The proposed driver uses not expensive clamping diodes but relatively cheap RC components in the Y and X main boards without degrading the performance. Consequently, it features fewer power devices and lower cost because of no clamping diodes. To demonstrate the validity of the proposed driver, various experimental results with a prototype 42-inch HD PDP module are presented.     

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.     

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     

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.     

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。     

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.     

Driving Characteristics of a High-Efficacy AC PDP With an Auxiliary Electrode

A new driving waveform was proposed in order to stabilize the driving characteristics of a high-efficacy AC plasma-display panel (PDP) with a coplanar gap of 200 mum and an auxiliary electrode. To stabilize the reset and address discharge, an erase pulse was applied to the auxiliary electrode instead of the sustain electrode after the sustain period. The write pulse was applied to the scan electrode, and a reset discharge was induced between the scan and auxiliary electrodes. As a result, the minimum address voltage could be reduced to a level similar to that achieved with a conventional ac PDP with a coplanar gap of 80 mum. Furthermore, the address-discharge time lag of the ac PDP with a coplanar gap of 200 mum was improved to a level that is comparable with that of the ac PDP with a coplanar gap of 80 mum.     

A New AC Plasma Display Panel With Auxiliary Electrode for High Luminous Efficacy

A new ac plasma display panel (PDP) for high luminous efficacy is proposed, and its characteristics are investigated. The new ac PDP has a coplanar gap of 200 mum and an auxiliary electrode located between the scan and common electrodes. The periodic pulses are applied to the auxiliary electrode during the sustain period, which plays the roles of enhancing the infrared emission and reducing the discharge current. The sustain voltage decreases with the increase of the auxiliary pulse voltage until 80 V. When the voltage of the pulse applied to the auxiliary electrode is 50 V, the luminous efficacy reaches its peak value and is approximately 8.7 lm/W obtained from the measurement of Ne + 20% Xe gas-mixture discharges in the green cells. The luminous efficacy of the new proposed test ac PDP with Ne + 13% Xe and Ne + 20% Xe gas mixtures is improved by 190% and 320%, respectively, compared to that of the conventional ac PDP with a Ne + 13% Xe gas mixture     

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.     

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。     

Luminance control method for a given gray level by asymmetric sustain pulses in AC PDP

A possible method to control luminance of a whole panel in an ac plasma display panel (PDP) is to control a total number of sustain pulses which is called as gray level control. However, this method leads to rough step-like luminance control especially in the low gray level. In this paper, a simple and robust luminance control method of whole panel is proposed. The key feature of the proposed driving technique is application of asymmetric amplitude modulation of sustain pulses in the display period of the address, display-period separation (ADS) driving scheme. As a result, the range of luminance control by the proposed method is about 50% of the luminance for a given gray level. Moreover, it is experimentally verified that the proposed method has similar dynamic margin performances compared with the conventional method.     

A resonant energy-recovery circuit for plasma display panel employing gas-discharge current compensation method

A resonant energy-recovery circuit for a plasma display panel (PDP) employing a gas-discharge current compensation method is proposed. Its main concept is to make the resonant circuit biased by V/sub s/ and 0V instead of V/sub s//2 in charging and discharging the PDP, respectively. This operation helps the PDP to be fully charged and discharged and all main switches turned on under zero-voltage switching. Moreover, since the inductor current can compensate the large gas-discharge current, the current stresses on main power switches can be considerably reduced and all main switches have the turn-on timing margin, which ensures the no voltage drop across the PDP. Therefore, all these features could favorably provide a high energy-recovery capability, more accumulated wall charge, reduced sustaining voltage, and low electromagnetic interference. Therefore, the proposed circuit is expected to be well suited for a hang-on-the-wall PDP TV.     

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.