IR2111 Introduction
The IR2111 is a robust, high-speed power driver for driving MOSFETs and IGBTs in half-bridge applications. It features both high and low side referenced output channels, making it ideal for controlling both sides of a power switch in a half-bridge configuration. The driver integrates proprietary HVIC and latch-immune CMOS technology. Its logic input is fully compatible with standard CMOS outputs, enabling seamless integration with digital control circuits.
One of the standout features of the IR2111 is its high pulse current buffer stage, which minimizes driver cross-conduction and provides internal deadtime to prevent shoot-through during operation.
IR2111 Symbol
IR2111 Footprint
IR2111 3D Model
IR2111 Pinout
IN: Logic input for high side and low side gate driver outputs (HO & LO), in phase with HO
VB: High side floating supply
HO: High side gate drive output
VS: High side floating supply return
VCC: Low side and logic fixed supply
LO: Low side gate drive output
COM: Low side return
IR2111 Typical Connection
IR2111 Functional Block Diagram
IR2111 Specification
| Feature | Specification |
| Driver Type | Half-Bridge |
| Output Channels | 2 |
| Supply Voltage | 10V ~ 20V |
| Logic Voltage | 8.3V, 12.6V |
| High Side Voltage | 600 V |
| Current - Peak Output (Source, Sink) | 250mA, 500mA |
| Rise / Fall Time (Typ) | 80ns, 40ns |
| Operating Temperature | -40°C ~ 150°C |
| Quiescent Current | Typically 300µA |
| Package Types | 8-PDIP |
IR2111 Features
Floating channel designed for bootstrap operation
Fully operational to +600V
Tolerant to negative transient voltage
dV/dt immune
Gate drive supply ranges from 10 to 20V
Undervoltage lockout for both channels
CMOS Schmitt - triggered inputs with pull-down
Matched propagation delay for both channels
Internally set deadtime
High side output in phase with input
Also available LEAD-FREE
IR2111 Applications
Half-Bridge Circuits
Motor Drives
Power Inverters
Switch-Mode Power Supplies (SMPS)
Induction Heating
Class D Audio Amplifiers
Electric Power Steering (EPS)
Battery Management Systems (BMS)
Uninterruptible Power Supplies (UPS)
LED Drivers
IR2111 Package
The IR2111 is housed in 8-PDIP, which is a robust, through-hole package for high-voltage power MOSFET and IGBT driver applications. This package type features eight pins, providing easy integration into circuits with minimal space requirements.
IR2111 Alternatives
Alternatives to the IR2111 include IR2110, IR2112, and TC4420. The IR2110 is a similar high-voltage driver with half-bridge capability, offering similar features for MOSFET and IGBT control. The IR2112 provides enhanced dead-time control and is suitable for higher-frequency applications. The TC4420, from Microchip, is a complementary driver that also handles high-voltage MOSFET and IGBT control.
FAQs
What is IR2111 used for?
The IR2111 is always used to control power MOSFETs and IGBTs in half-bridge applications. It is commonly used in motor drives, power supplies, and other power electronics circuits requiring precise switching.
What is dead-time in IR2111?
Dead-time is the brief period between turning off one MOSFET and turning on the other in a half-bridge configuration. The IR2111 includes internal dead-time control to prevent shoot-through, where both MOSFETs are on at the same time, which can lead to short circuits and component damage.
What type of input logic is compatible with IR2111?
The IR2111 logic input is compatible with standard CMOS logic levels, making it easy to interface with other components in a digital control system.
