Design of All-Directional ESD Protection circuit with SCR-based I/O and LIGBT-based Power clamp

Do, Kyoung-Il; Jin, Seung-hoo; Lee, Byung-Seok; jewook, Woo; Koo, Yong-Seo

doi:10.1109/iceic51217.2021.9369761

Cited by 5 publications

(3 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, ESD current discharge with higher current driving capacity is possible by forming a discharge path by positive feedback between NPN BJT and PNP BJT. Therefore it can be confirmed that ESD current is discharged through three paths to have latch-up immune characteristics through high holding voltage [15].…”

Section: Introductionmentioning

confidence: 86%

Design of LDO Regulator With High Reliability ESD Protection Circuit Using Analog Current Switch Structure for 5-V Applications

Kwon

Koo

2023

IEEE Access

Self Cite

View full text Add to dashboard Cite

The modern electronic device should be able to provide stable voltage and current under a variety of conditions. The LDO regulator used in the electronic device is a system that requires various voltages and load currents. This paper suggests to the LDO regulator with the high reliability ESD protection circuit that achieves low peak voltage through analog switch structure. The proposed LDO regulator has the function of detecting the output voltage fluctuations depending on the load via an analog switch structure and effectively controlling the peak voltage. In addition, as IC is miniaturized and integrated, circuit failures frequently occur in mobile devices using the low voltage due to electrostatic discharge (ESD). The proposed ESD protection circuit is placed on I/O and power lines to prevent the IC circuit from being destroyed from the inevitable ESD phenomenon. Therefore, in this paper, an ESD protection circuit was built into the LDO regulator to verify high reliability from ESD situations. It was verified that the high reliability of the IC can be improved through effective current discharge due to ESD surge. The proposed LDO regulator, implemented in a 0.13μm BCD process, achieves an undershoot voltage of 25 mV and an overshoot voltage of 28 mV for a load current of 300 mA.

show abstract

Section: Introductionmentioning

confidence: 86%

Design of LDO Regulator With High Reliability ESD Protection Circuit Using Analog Current Switch Structure for 5-V Applications

Kwon

Koo

2023

IEEE Access

Self Cite

View full text Add to dashboard Cite

show abstract

“…This prevents the latch-up problem caused by the low holding voltage in conventional SCR and provides stable ESD protection. Therefore, when the proposed ESD protection circuit is built into the LDO regulator, the ESD current can be safely discharged, ensuring stable operation of the LDO regulator against ESD events, as well as improved performance and lifespan [20,21,22,23,24,25,26]. As shown in Figure 2, the proposed LDO regulator consists of a dynamic current driving structure and an SCRbased ESD protection circuit.…”

Section: Introductionmentioning

confidence: 99%

High-reliability LDO regulator with built-in SCR-based ESD protection circuit designed for effective peak voltage reduction

Kwon¹,

Jeong²,

Lee³

et al. 2023

IEICE Electron. Express

View full text Add to dashboard Cite

The LDO regulator and ESD protection circuit are essential circuit configurations for stable voltage provision and high reliability at the IC level. This paper proposes an LDO regulator with a built-in silicon controlled rectifier (SCR) based electrostatic discharge (ESD) protection circuit that can provide optimized voltage for low voltage applications. The proposed LDO regulator can skillfully control the output voltage by forming additional current discharge and supply paths through the dynamic current driving structure. In addition, in this paper, the high reliability of the IC was verified by intentionally exposing it to ESD situations depending on the presence or absence of the ESD protection circuit of the LDO regulator. It was confirmed that the proposed LDO regulator designed in a 0.13μm BCD process was kept an undershoot voltage of 23mV and an overshoot voltage of 21mV for a load current of 300mA. As a result, the proposed LDO regulator with built-in ESD protection circuit was secured high reliability of LDO regulator from ESD situation as well as low peak voltage due to load current.

show abstract

“…The LVTSCR ESD protection structure has improved electrical properties to effectively prevent ESD surge at a low voltage. The proposed LDO regulator has built in an LVTSCR-based ESD protection circuit to secure the high reliability of the IC circuit [18][19][20][21][22][23][24]. The proposed LDO regulator using the current driving buffer structure was secured reliably by applying ESD surge to POWER CLAMP and I/O CLAMP, and then the output voltage was verified.…”

Section: Introductionmentioning

confidence: 99%

Design of Capacitor-Less High Reliability LDO Regulator with LVTSCR Based ESD Protection Circuit Using Current Driving Buffer Structure

Kwon

Koo

2022

Electronics

Self Cite

View full text Add to dashboard Cite

The peak voltage depending on the load current can be affected by the external capacitors installed in the output stage of the LDO regulator. However, the capacitor-less LDO regulator proposed in this study was applied a current driving buffer structure between the output stage of the error amplifier and the path transistor. Therefore, the proposed LDO regulator maintained a stable output voltage regardless of the load current by controlling an effective overshoot/undershoot voltage. In addition, the proposed LDO regulator has a built-in LVTSCR based on the ESD protection circuit. As most IC circuits are malfunctioned and destroyed by the ESD phenomenon, the reliability was verified through the built-in ESD protection circuit of the proposed LDO regulator. The proposed LDO regulator with the current driving buffer structure can effectively control the peak voltage. As a result of the measurement, the undershoot voltage of 22 mV and the overshoot voltage of 19 mV were maintained when the load current of 250 mA was provided under the conditions of 3.3 V to 4.5 V and the output power voltage of 3 V. The proposed ESD protection circuit is also guaranteed to function at temperatures as high as 500 K.

show abstract

Design of All-Directional ESD Protection circuit with SCR-based I/O and LIGBT-based Power clamp

Cited by 5 publications

References 4 publications

Design of LDO Regulator With High Reliability ESD Protection Circuit Using Analog Current Switch Structure for 5-V Applications

Design of LDO Regulator With High Reliability ESD Protection Circuit Using Analog Current Switch Structure for 5-V Applications

High-reliability LDO regulator with built-in SCR-based ESD protection circuit designed for effective peak voltage reduction

Design of Capacitor-Less High Reliability LDO Regulator with LVTSCR Based ESD Protection Circuit Using Current Driving Buffer Structure

Contact Info

Product

Resources

About