EG3112 EGmicro 600V High Voltage Half-Bridge Gate Driver 2A/2.5A SOP-8 for Power MOSFET/IGBT

EG3112 Product Overview

The EG3112 is a high cost-effective high-power MOSFET and IGBT gate drive dedicated chip from EGmicro, housed in an SOP-8 package. The device employs a high-side floating bootstrap power supply design with a withstand voltage of up to 600V, requiring only a single VCC supply to achieve high-voltage driving of both upper and lower bridge arms. Its low-side VCC voltage range spans 2.8V to 20V, compatible with 5V and 3.3V input voltages, and supports a maximum operating frequency of 500kHz. The EG3112 delivers output current capability of IO+/− 2A/2.5A, with built-in dead-time control circuitry and latch function to effectively prevent simultaneous conduction of upper and lower outputs. The chip features quiescent current of less than 5uA, making it ideal for battery-powered applications, with minimal external components required. EG3112 is a versatile and dependable gate driver.

EG3112 Core Features

High-Voltage Driving: High-side floating bootstrap design with 600V withstand voltage

Wide Supply Range: Low-side VCC voltage range 2.8V~20V, compatible with 5V and 3.3V inputs

Output Current: 2A peak source / 2.5A peak sink

High Frequency: Maximum operating frequency up to 500kHz

Built-in Dead-Time Control: Typical dead-time of 100ns prevents simultaneous conduction

Latch Function: Completely prevents simultaneous conduction of upper and lower outputs

Ultra-Low Quiescent Current: Less than 5uA, ideal for battery-powered applications

Input Pull-Down Resistors: 200K pull-down resistors on HIN and LIN inputs keep power MOSFETs off when inputs float

Switching Time: Rise time 120ns, fall time 80ns

Package: SOP-8 surface mount package with minimal external components

EG3112 is designed for robust performance.

EG3112 Applications

Mobile Power High-Voltage Fast Charging: EG3112 can be used in mobile power high-voltage fast charging switching power supplies for efficient power conversion.

Variable-Frequency Water Pump Controllers: EG3112 is suitable for motor drive circuits in variable-frequency water pump controllers.

600V Buck Switching Power Supplies: EG3112 can drive high-side power transistors in 600V buck switching power supplies.

Electric Vehicle Controllers: EG3112 is suitable for brushless motor drive applications in electric vehicle controllers.

Brushless Motor Drivers: EG3112 is specifically designed for drive circuits in brushless motor controllers.

High-Voltage Class-D Amplifiers: EG3112 can be used for power stage driving in high-voltage Class-D audio amplifiers.

Low-Voltage Servo Drivers: EG3112 can accept both upper and lower gate drive signals simultaneously, solving board space constraint issues.

EG3112 Key Advantages

High Integration: EG3112 integrates logic signal input processing, dead-time control, latch, level shift, pulse filter, and output drive circuits, significantly reducing external components.

Reliable Protection: EG3112 features built-in dead-time control and latch function to completely prevent simultaneous conduction of upper and lower switches.

Ultra-Low Power Consumption: EG3112's quiescent current is less than 5uA, significantly extending battery life in battery-powered and standby scenarios.

Wide Voltage Adaptability: EG3112's low-side VCC voltage range of 2.8V~20V is compatible with 5V and 3.3V logic inputs, adapting to various control platforms.

Compact Package: EG3112 uses SOP-8 packaging, occupying minimal PCB area for high-density layouts.

Cost Advantage: EG3112 achieves 600V high-voltage half-bridge driving with high cost-effectiveness, providing an economical solution for small-to-medium power conversion applications.

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FAQ

1. What is the maximum withstand voltage of EG3112?
   
   • EG3112's high-side floating bootstrap power supply has a withstand voltage of up to 600V, suitable for high-voltage power conversion applications.
2. What is the output current capability of EG3112?
   
   • EG3112 has a peak source current of 2A and a peak sink current of 2.5A, capable of quickly driving the gates of high-power MOSFETs and IGBTs.
3. What is the supply voltage range of EG3112?
   
   • The low-side VCC voltage range is 2.8V to 20V, compatible with 5V and 3.3V logic input voltages.
4. What is the maximum operating frequency of EG3112?
   
   • EG3112 supports a maximum operating frequency of 500kHz, meeting the requirements of most high-frequency switching power supplies and motor drives.
5. Does EG3112 have protection against simultaneous conduction of upper and lower switches?
   
   • EG3112 features built-in dead-time control circuitry (typical 100ns) and a latch function to completely prevent simultaneous conduction of upper and lower outputs, ensuring power stage safety.
6. What is the quiescent current of EG3112?
   
   • EG3112's quiescent current is less than 5uA, extremely low power consumption, ideal for battery-powered portable devices.
7. What package does EG3112 use?
   
   • EG3112 uses an SOP-8 surface mount package with minimal external components, facilitating design and integration.
8. What happens when the inputs of EG3112 are floating?
   
   • The HIN and LIN input channels have built-in 200K pull-down resistors, which keep the upper and lower power MOSFETs in the off state when inputs are floating, preventing false triggering.
9. What are the typical applications of EG3112?
   
   • Suitable for mobile power high-voltage fast charging switching power supplies, variable-frequency water pump controllers, 600V buck switching power supplies, electric vehicle controllers, brushless motor drivers, and high-voltage Class-D amplifiers.
10. What is the operating temperature range of EG3112?
    
    • The operating temperature range is -45°C to +125°C, meeting industrial-grade temperature requirements.