• Title/Summary/Keyword: bootstrap circuit

Search Result 16, Processing Time 0.026 seconds

Design of Charge Pump Circuit for Floating Gate Power Supply of Intelligent Power Module (Intelligent Power Module의 플로팅 게이트 전원 공급을 위한 전하 펌프 회로의 설계)

  • Lim, Jeong-Gyu;Chung, Se-Kyo
    • The Transactions of the Korean Institute of Power Electronics
    • /
    • v.13 no.2
    • /
    • pp.135-144
    • /
    • 2008
  • A bootstrap circuit is widely used for the floating gate power supply of Intelligent power module (IPM). A bootstrap circuit is simple and inexpensive. However, the duty cycle and on-time are limited by the requirement to refresh the charge in the bootstrap capacitor. And the value of the bootstrap capacitor should be increased as the switching frequency decreases. A charge pump circuit can be used to overcome the problems. This paper deals with an analysis and design of a charge pump circuit for the floating gate power supply of an IPM. The simulation and experiment are carried out for an induction motor drive system. The results well verifies the validity of the proposed circuit and design method.

Design of Bootstrap Power Supply for Half-Bridge Circuits using Snubber Energy Regeneration

  • Chung, Se-Kyo;Lim, Jung-Gyu
    • Journal of Power Electronics
    • /
    • v.7 no.4
    • /
    • pp.294-300
    • /
    • 2007
  • This paper deals with a design of a bootstrap power supply using snubber energy regeneration, which is used to power a high-side gate driver of a half-bridge circuit. In the proposed circuit, the energy stored in the low-side snubber capacitor is transferred to the high-side bootstrap capacitor without any magnetic components. Thus, the power dissipation in the RCD snubber can be effectively reduced. The operation principle and design method of the proposed circuit are presented. The experimental results are also provided to show the validity of the proposed circuit.

A PWM Control Strategy for Low-speed Operation of Three-level NPC Inverter based on Bootstrap Gate Drive Circuit (부트스트랩 회로를 적용한 3-레벨 NPC 인버터의 저속 운전을 위한 PWM 스위칭 전략)

  • Jung, Jun-Hyung;Ku, Hyun-Keun;Im, Won-Sang;Kim, Wook;Kim, Jang-Mok
    • The Transactions of the Korean Institute of Power Electronics
    • /
    • v.19 no.4
    • /
    • pp.376-382
    • /
    • 2014
  • This paper proposes the pulse width modulation (PWM) control strategy for low-speed operation in the three-level neutral-point-clamped (NPC) inverters based on the bootstrap gate drive circuit. As a purpose of the cost reduction, several papers have paid attention to the bootstrap circuit applied to the three-level NPC inverter. However, the bootstrap gate driver IC cannot generate the gate signal to the IGBT for low-speed operation, because the bootstrap capacitor voltage decreases under the threshold level. For low-speed operation, the dipolar and partial-dipolar modulations can be the effective solution. However, these modulations have drawbacks in terms of the switching loss and THD. Therefore, this paper proposes the PWM control strategy to operate the inverter at low-speed and to minimize the switching loss and harmonics. The experimental results are presented to verify the validity on the proposed method.

Design of Charge Pump Circuit for Intelligent Power Module of Floating Gate Power Supply (Intelligent Power Module의 플로팅 게이트 전원 공급을 위한 전하 펌프 회로의 설계)

  • Lim, Jeong-Gyu;Kim, Seok-Hwan;Seo, Eun-Kyung;Chung, Se-Kyo
    • Proceedings of the KIPE Conference
    • /
    • 2005.07a
    • /
    • pp.421-423
    • /
    • 2005
  • A bootstrap circuit for floating power supply has the advantage of being simple and inexpensive. However, the duty cycle and on-time are limited by the requirement to refresh the charge in the bootstrap capacitor. Hence, this paper deals with a design of charge pump circuit for a floating gate power supply of an IPM. The operation of the proposed circuit applied by three-phase inverter system for driving induction motor are verified through the experiments.

  • PDF

High Speed, High Resolution CMOS Sample and Hold Circuit (고속, 고해상도 CMOS 샘플 앤 홀드 회로)

  • Kim Won-Youn;Park Kong-Soon;Park Sang-Wook;Yoon Kwang-Sub
    • Proceedings of the IEEK Conference
    • /
    • 2004.06b
    • /
    • pp.545-548
    • /
    • 2004
  • The paper describes the design of high-speed, high-resolution Sample-and-Hold circuit which shows the conversion rate 80MHz and the power supply of 3.3v with 0.35um CMOS 2-poly 4-metal process for high-speed, high resolution Analog-to-Digital Converter. For improving Dynamic performance of Sample-and-Hold, Two Double bootstrap switch and high performance operational amplifier with gain booster, which are used. and For physical stability of Sample and Hold circuit, reduces excess voltage of gate in bootstrap switch. Simulation results using HSPICE shows the SFDR of 71dB, 75dB in conversion rate of 80MHz result for two inputs(0.5Vpp, 10MHz and 1Vpp, 10MHz) and the power dissipation of 48mW at single 3.3V supply voltage.

  • PDF

A Gate Drive IC for Power Modules with Shoot-through Immunity (상단락 방지용 모듈을 구동하기 위한 게이트 구동 IC)

  • Seo, Dae-Won;Kim, Jun-Sik;Park, Shi-Hong
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
    • /
    • v.22 no.7
    • /
    • pp.580-583
    • /
    • 2009
  • This paper introduces a gate drive IC for power modules with shoot-through immunity. A new approach uses a bootstrap diode as a high-side voltage bias and a level shift function at the same time. Therefore, the gate drive circuit becomes a simple and low-cost without conventional level shift functions such as HVIC(High-Voltage IC), optocoupler and transformer. The proposed gate drive IC is designed and fabricated using the Dongbu-Hitek's 0.35um BD350BA process. It has been tested and verified with IGBT modules.

Three-phase Motor Drive IC for Automotive Applications (자동차용 3상 모터 드라이브 IC)

  • Jung, Jin-Soo;Park, Shi-Hong
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
    • /
    • v.22 no.7
    • /
    • pp.563-566
    • /
    • 2009
  • This paper presents a motor drive IC for automotive applications. The drive IC is dedicated to control and drive external MOSFETs which directly drive 3-phase motor with a high current. In case of driving high-side power switches, the bootstrap topology is widely used. however, it requires three bootstrap diode and three capacitor respectively. And it needs a minimum charging time to maintain high-side voltage. The motor drive IC uses a charge-pump circuit for all three high-side voltage with various protection schemes for automotive applications.

Three-phase Motor Drive IC for automotive applications (자동차용 3상 모터 드라이브 IC)

  • Jung, Jin-Soo;Hwang, Seung-Hyun;Park, Shi-Hong
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
    • /
    • 2009.04b
    • /
    • pp.41-42
    • /
    • 2009
  • This paper presents a motor drive IC for automotive applications. The drive IC is dedicated to control and drive external MOSFETs which directly drive 3-phase motor with a high current. In case of driving high-side power switches, the bootstrap topology is widely used. However, it requires three bootstrap diode and three capacitor respectively. And it needs a minimum charging time to maintain high-side voltage. The motor drive IC uses a charge-pump circuit for all three high-side voltage with various protection schemes for automotive applications.

  • PDF

A Gate Drive IC for Power Modules with Shoot-Through Immunity (상단락 방지용 모듈을 구동하기 위한 게이트 구동 IC)

  • Seo, Dae-Won;Kim, Jun-Sik;Park, Shi-Hong
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
    • /
    • 2009.04b
    • /
    • pp.81-82
    • /
    • 2009
  • This paper introduces a gate drive IC for power modules with shoot-through immunity. A new approach uses a bootstrap diode as a high-side voltage bias and a level shift function at the same time. Therefore, the gate drive circuit becomes a simple and low-cost without conventional level shift functions such as HVIC(High-Voltage IC), optocoupler and transformer. The proposed gate drive IC is designed and fabricated using the Dongbu-Hitek's 0.35um BD350BA process. It has been tested and verified with IGBT modules.

  • PDF

A Low Cost Gate Drive Circuit Design Based on Bootstrap Circuit for 3-level T-type Inverter (3-레벨 T-type 인버터에 적용 가능한 저가형 게이트 드라이버 설계)

  • Jung, Jun-Hyung;Kim, Dong-Bin;Park, Sang-Woo;Yeom, Han-Beom;Kim, Jang-Mok
    • Proceedings of the KIPE Conference
    • /
    • 2014.07a
    • /
    • pp.510-511
    • /
    • 2014
  • 본 논문에서는 3-레벨 T-type 인버터에 적용 가능한 저가형 게이트 드라이버 회로를 설계하였다. 게이트 드라이버 회로는 구조가 간단하고 가격 대비 효율적인 부트스트랩 회로가 적용되었다. 3-레벨 NPC 인버터와 비교했을때 T-type 인버터는 구조적 특징으로 인해 NPC 인버터와는 다른 게이트 드라이브 회로가 필요하다. 그러므로 본 논문에서는 T-type 인버터에 적용되는 부트스트랩 게이트 드라이버 회로를 설계하였으며 안정적인 회로 동작을 위한 부트스트랩 캐패시터의 용량 선정식을 제안하였다. 설계한 게이트 드라이버 회로는 시뮬레이션을 통해 검증하였다.

  • PDF