Investigations on the High Current Behavior of Lateral Diffused High-Voltage Transistors

Knaipp, M.; Röhrer, Georg; Minixhofer, R.; Seebacher, E.

doi:10.1109/ted.2004.835163

Cited by 21 publications

(5 citation statements)

References 7 publications

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“…The analysis of quasi-saturation is, however, very complex requiring two-or even three-dimensional simulations [78,[93][94][95][96][97][98][99][100][101]. The resistance is then …”

Section: Quasi-saturationmentioning

confidence: 99%

High-Voltage and Power Transistors

El-Kareh¹,

Hutter²

2015

Silicon Analog Components

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This chapter focuses mainly on the drain-extended MOS transistor, DEMOS, for high voltage applications, and on the lateral double-diffused MOS transistor, LDMOS, for high power applications. In both cases, the drain is extended with a lightly-doped region, referred to as the drift region, to sustain the high voltage. The chapter begins with an analysis of the drift region and its optimization, typically by reduced surface-field (RESURF) techniques. The transistor switching performance is then analyzed, followed by a discussion of DEMOS and LDMOS design considerations and characteristics. High-voltage and high-current effects are then described, including quasi-saturation, body current, on-state breakdown, and safe operating area (SOA). The chapter concludes with selected high-voltage device applications. IntroductionThe MOSFETs discussed in Chap. 6 are designed for digital, analog, mixed-signal, and RF applications that operate in the low-to-medium voltage range of about 0.8-6 V. Many analog applications, however, require transistors that can handle voltages above 20 V and currents in the ampere range. Those transistors are referred to as high-voltage and power transistors. This chapter provides a comprehensive analysis of the drain-extended MOS transistor (DEMOS), for high-voltage and low-current applications, and the lateral double-diffused MOS (LDMOS) transistor, LDMOS, for power applications. (The "D" in LDMOS describes the sequential (double) diffusion of boron and arsenic through the same oxide opening, defining a precise channel length (Chap. 9). The "L" means that the current path is parallel to the silicon surface (lateral), as opposed to "V" in VDMOS where the current is nearly vertical to the silicon surface.) Schematic cross sections of both transistors (Table 7.1). The DEMOS is typically processed without added process complexity, whereas the LDMOS requires optimization of the P-body and N-drift regions to achieve high voltages and currents while minimizing the drain-to-source resistance and transistor area.The interest in bipolar, CMOS, and DMOS (BCD) technologies has been driven primarily by the proliferation of portable electronics, automotive electronics, and the need for energy efficiency. These applications cluster around different operating points, with 24 V for portable electronics; 60 V for automotive, solar, and LED backlighting; 85 V for power over Ethernet; 120 V for telecommunication; and 700 V for offline LED lighting, consumer, and industrial applications. As a result, BCD is now the technology of choice to realize power ICs by most integrated device manufacturers (IDM) and foundries [1][2][3][4][5].This chapter focuses mainly on transistors with voltage capabilities in the range of 20-700 V, where the bulk of the product applications lie.

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“…The analysis of quasi-saturation is, however, very complex requiring two-or even three-dimensional simulations [78,[93][94][95][96][97][98][99][100][101]. The resistance is then …”

Section: Quasi-saturationmentioning

confidence: 99%

High-Voltage and Power Transistors

El-Kareh¹,

Hutter²

2015

Silicon Analog Components

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“…The K-point (intrinsic drain) voltage provides a powerful and robust criterion for the separation between the different saturation mechanisms [18,19]. This can be depicted from Fig.…”

Section: Effects In Buffered Resurf-ldmosmentioning

confidence: 99%

Design considerations of high voltage RESURF nLDMOS: An analytical and numerical study

Abouelatta

Shaker

Sayah

et al. 2015

Ain Shams Engineering Journal

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In this paper, a RESURF high voltage (HV) nLDMOS is designed in 0.35 lm BiCMOS technology (STMicroelectronics technology-like). Optimization of the key device/process parameters of the device is performed using analytical approach and verified using advanced 2D numerical simulation. The results show excellent R ON,SP /BV trade-off (BV % 400 V and R ON,SP = 9.5 mX cm 2 for T epi = 4 lm and L Drift = 17 lm) without any added process complexity. The maximum obtained drain current is 1.8 mA/lm at a gate voltage of 5 V. The designed device is suitable for smart power integration. Ó 2014 Faculty of Engineering, Ain Shams University. Production and hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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“…The systems, where such devices are used, range from power components for automotive and consumer products [2] up to radio frequency applications [6][7][8]. Therefore, compact modeling of HV-MOS is an enabling factor that will help in predicting how these devices can be optimally integrated in complex architectures [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26]. More particularly, the RF characterization and modeling of HV-MOS should receive extra attention since the high-frequency behavior is, still, a quite demanding and challenging issue.…”

Section: Introductionmentioning

confidence: 99%

RF Compact Modeling of High-voltage MOSFETs

et al. 2012

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The High-Voltage MOSFET is used in a wide variety of applications covering from power systems up to RF-IC. Compact models that describe the high-frequency behavior of the device are required to predict high-frequency operation and switching capabilities of these elements in HV state-of-the-art systems. In this paper, an RF model is presented and verified against extensive Y-parameter measurements, which were carried out on a long channel Lateral doubleDiffusion MOS device. Assessment of the model with measurements confirms the validity of this approach.

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Investigations on the High Current Behavior of Lateral Diffused High-Voltage Transistors

Cited by 21 publications

References 7 publications

High-Voltage and Power Transistors

High-Voltage and Power Transistors

Design considerations of high voltage RESURF nLDMOS: An analytical and numerical study

RF Compact Modeling of High-voltage MOSFETs

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