IR2104S Introduction
The IR2104S is a high-voltage, high-speed driver to control power MOSFETs and IGBTs. It features both high-side and low-side output channels, which are interdependent, making it ideal for driving N-channel power MOSFETs or IGBTs in a variety of high-side configurations. The device is built using proprietary HVIC (High Voltage Integrated Circuit) and latch-immune CMOS technology.
One of the key advantages of the IR2104S is its compatibility with standard CMOS and LSTTL logic inputs, supporting logic levels as low as 3.3V. The output drivers are equipped with a high-pulse current buffer stage, minimizing the risk of cross-conduction between the high and low sides.
IR2104S Pinout
1. VCC: Low side and logic fixed supply
2. IN: Logic input for high and low side gate driver outputs (HO and LO), in phase with HO
3. SD: Logic input for shutdown
4. COM: Low side return
5. LO: Low side gate drive output
6. HO: High side gate drive output
7. VS: High side floating supply return
8. VB: High side floating supply
IR2104S Symbol
IR2104S Footprint
IR2104S 3D Model
IR2104S Typical Connection
IR2104S Functional Block Diagram
IR2104S Marketing Information
IR2104S Specification
| Specification | Details |
| Gate Type | IGBT, N-Channel MOSFET |
| Input Voltage Logic | 3.3V, 5V (CMOS/LSTTL compatible) |
| Logic Voltage - VIL, VIH | 0.8V, 3V |
| Voltage - Supply | 10V to 20V |
| High Side Voltage - Max (Bootstrap) | 600 V |
| Gate Drive Output Current | 0.29A (source), 0.6A (sink) |
| Current - Peak Output (Source, Sink) | 210mA, 360mA |
| Propagation Delay | 120 ns |
| Turn-On Rise Time | 100ns |
| Turn-Off Fall Time | 50ns |
| Dead Time | 520 ns |
| Operating Temperature Range | -40°C ~ 150°C |
| Package | 8-SOIC |
| Max Frequency | 500 kHz |
IR2104S 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 input logic compatible
Cross-conduction prevention logic
Internally set deadtime
High side output in phase with input
Shut down input turns off both channels
Matched propagation delay for both channels
Also available LEAD-FREE
IR2104S Applications
Motor Drives
Switch-Mode Power Supplies (SMPS)
DC-DC Converters
Uninterruptible Power Supplies (UPS)
Inverters
Induction Heating
IR2104S Package
The IR2104S is packaged in an 8-SOIC format, which is a common surface mount package known for its compact size and lightweight characteristics. The 8-SOIC package contains eight pins and is widely used in various electronic devices, particularly in portable applications and compact circuit board designs.
Additionally, the 8-SOIC package features low lead inductance and parasitic capacitance, which enhance signal integrity and reduce electromagnetic interference (EMI). This makes it suitable for high-frequency applications where maintaining signal quality is crucial.
How to Use IR2104S?
First, connect the power supply pin (VCC) of the IR2104S to an appropriate power source, ensuring that the high-side and low-side supply voltages (VB and VS) meet the required specifications. When making these connections, pay attention to the polarity of the power supply to avoid damaging the chip due to incorrect wiring.
Next, connect the control signal input to the input pin (IN) of the IR2104S. This input pin is compatible with 3.3V and 5V CMOS or LSTTL logic levels.
Then, connect the output pins (HO and LO) of the IR2104S to the gate terminals of the high-side and low-side MOSFETs or IGBTs, respectively. Finally, check the entire circuit connection to ensure everything is securely connected. With these steps completed, you have successfully configured the IR2104S, and it is ready for normal operation.
FAQs
What is the IR2104S?
The IR2104S is a high-voltage, high-speed driver specifically designed for controlling N-channel power MOSFETs and IGBTs. It features both high-side and low-side output channels, making it suitable for various power management applications.
What are the key electrical characteristics of the IR2104S?
Key characteristics include a propagation delay of about 120 ns, turn-on rise time of approximately 160 ns, and turn-off fall time of around 70 ns. The output drivers can deliver a source current of up to 0.29A and a sink current of up to 0.6A.
Where can I find the datasheet for the IR2104S?
The datasheet can typically be found on the manufacturer's website or through electronic component distributors. It contains detailed specifications, application notes, and circuit examples for using the IR2104S effectively.
