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IR2104SPBF SOP-8 Half-Bridge MOSFET/IGBT Gate Driver IC (5-Pack)
IR2104SPBF SOP-8 Half-Bridge MOSFET/IGBT Gate Driver IC (5-Pack)
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IR2104SPBF SOP-8 Half-Bridge MOSFET/IGBT Gate Driver IC (5-Pack)
The IR2104SPBF is a compact half-bridge gate driver from Infineon (International Rectifier) in a SOP-8 surface-mount package. Unlike the IR2110/IR2113 which require separate HIN/LIN inputs, the IR2104 accepts a single PWM input (IN) and generates complementary high-side and low-side gate drive signals with built-in dead-time — ideal for DC motor PWM drives and simplified half-bridge designs.
Key Specifications
| Parameter | Value |
|---|---|
| Part Number | IR2104SPBF |
| Package | SOP-8 (SMD) |
| High-Side Floating Supply | 10V – 600V (VS pin) |
| Logic Supply (VCC) | 10V – 20V |
| Output Current (Peak) | 1.9A source / 1.9A sink |
| Input | Single PWM (IN pin) + SD (shutdown) |
| Built-in Dead-Time | ~520ns (prevents shoot-through) |
| Logic Input | 3.3V / 5V CMOS/TTL compatible |
| Propagation Delay | ~680ns (high-side), ~150ns (low-side) |
| Quantity | 5 pieces |
IR2104 vs IR2110 — Key Difference
| Feature | IR2104SPBF | IR2110 / IR2113 |
|---|---|---|
| Inputs | Single PWM (IN) | Separate HIN + LIN |
| Dead-Time | Built-in (~520ns) | External (user-defined) |
| Output Current | 1.9A | 2A |
| Package | SOP-8 | SOP-14/16 |
| Best For | DC motor PWM, simple half-bridge | Full-bridge, inverter, precise dead-time |
Why Choose IR2104SPBF?
- Single PWM Input — Simplifies MCU interface; one GPIO controls both high-side and low-side
- Built-in Dead-Time — ~520ns prevents shoot-through without MCU timing management
- SD Shutdown Pin — Active-low shutdown for fault protection and enable/disable control
- 600V Floating Supply — Drives high-side MOSFETs/IGBTs in half-bridge topology
- SOP-8 Compact Package — Minimal PCB footprint for space-constrained motor driver designs
Typical Applications
- DC brushed motor bidirectional PWM speed control
- Half-bridge DC-DC converter (buck, boost)
- Solenoid and valve PWM driver
- Class D audio amplifier half-bridge stage
- Induction heating half-bridge resonant circuit
FAQ
Q: Can IR2104 drive a full H-bridge for bidirectional motor control?
A: Yes — use two IR2104 ICs (one per half-bridge leg). Connect IN pins to complementary PWM signals from MCU for full H-bridge control.
Q: What bootstrap capacitor is recommended?
A: 100nF ceramic between VB and VS. For longer high-side on-times, increase to 470nF–1μF.
Package Contents
- 5× IR2104SPBF SOP-8 Half-Bridge Gate Driver IC
