IR2102 Description
The IR2102 is a high-voltage, high-speed gate driver designed for controlling power MOSFETs and IGBTs with independent high-side and low-side output channels. Using advanced HVIC and latch-immune CMOS technologies, these drivers provide robust and reliable performance in demanding applications.
Compatible with CMOS or LSTTL logic inputs down to 3.3V, the IR2101 ensures seamless integration with modern digital systems. It features high pulse current output stages that minimize cross-conduction, enhancing efficiency and reliability. Additionally, its floating channel supports driving high-side N-channel MOSFETs or IGBTs in circuits operating up to 600V.
IR2102 Symbol
IR2102 Footprint
IR2102 3D Model
IR2102 Pinout
VCC: Low side and logic fixed supply
HIN: Logic input for high side gate driver output (HO), out of phase
LIN: Logic input for low side gate driver output (LO), out of phase
COM: Low side return
LO: Low side gate drive output
VS: High side floating supply return
HO: High side gate drive output
VB: High side floating supply
IR2102 Typical Connection
IR2102 Functional Block Diagram
IR2102 Specification
| Parameter | Specification |
| Supply Voltage | 10V ~ 20V |
| Logic Voltage - VIL, VIH | 0.8V, 3V |
| High Side Voltage - Max | 600 V |
| Input Logic Compatibility | CMOS/LSTTL (down to 3.3V) |
| Input Threshold Voltage | VIL ≤ 0.8V, VIH ≥ 2.0V |
| Current - Peak Output (Source, Sink) | 210mA, 360mA |
| Input Type | Inverting |
| Rise / Fall Time (Typ) | 100ns, 50ns |
| Operating Temperature Range | -40°C ~ 150°C |
| Package | 8-PDIP |
IR2102 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
3.3V, 5V, and 15V logic input compatible
Matched propagation delay for both channels
Outputs in phase with inputs (IR2101) or out of phase with inputs (IR2102)
Also available LEAD-FREE
IR2102 Applications
Motor Control
DC-DC Converters
AC Inverters
Switch-Mode Power Supplies (SMPS)
Lighting Systems
Renewable Energy Systems
Electric Vehicles (EVs)
IR2102 Package
The IR2102 features an 8-PDIP package, a through-hole design widely used in power drive applications. The 8-PDIP package dimensions are 9.81mm x 6.35mm (length x width), with a pin pitch of 2.54mm and a height of 3.3mm, making it compatible with standard PCB layouts.
This package includes 8 pins dedicated to logic input, high and low-side outputs, and power connections, ensuring efficient signal and power transmission. Its compact design makes it ideal for space-constrained applications, such as power management, motor drives, and embedded systems.
How to Use IR2102?
To use IR2102, follow these steps:
Prepare Power Supply and Input Signals
First, provide an appropriate power supply to the IR2102. Connect the logic power supply (VCC) to a 5V or 3.3V source, ensuring the logic inputs (HIN and LIN) are compatible with standard CMOS or LSTTL signals. Additionally, connect the COM pin to the system's low-level ground to establish a reference potential.
Connect High-Side and Low-Side Outputs
Next, connect the high-side output (HO) to the gate of the N-channel MOSFET or IGBT, linking its source to the VS pin. Then, connect the low-side output (LO) to the gate of the low-side switch, ensuring that the two output channels independently control the high- and low-side switches. Use appropriate gate resistors to limit the driving current.
Configure Floating Power Supply
For high-side driving, a floating power supply is required. Connect the VB pin to a capacitor and link it to the VS pin to provide stable floating power. A recommended capacitor value is typically between 0.1µF and 1µF.
Finally, ensure all connections are correct before powering the system. Use input signals to alternately control the high-side and low-side switches.
FAQs
What is IR2102 used for?
The IR2102 is a high-speed driver IC used to control power MOSFETs or IGBTs in high-voltage applications, such as motor drives, power supplies, and inverters.
How does IR2102 prevent cross-conduction?
The IR2102 includes a built-in dead-time control to ensure there is no simultaneous conduction of the high-side and low-side switches, preventing short circuits.
Can the IR2102 drive both N-channel MOSFETs and IGBTs?
Yes, the IR2102 is designed to drive N-channel MOSFETs and IGBTs for both high- and low-side configurations.
