IR2304SPBF - 600V Half-Bridge Gate Driver IC | Infineon
MPN: IR2304SPBF β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.78 | $0.78 |
| 10 | $0.71 | $7.10 |
| 100 | $0.62 | $62.00 |
| 500 | $0.55 | $275.00 |
| 1,000 | $0.48 | $480.00 |
IR2304SPBF Overview
A gate driver is an integrated circuit that amplifies low-power control signals from a microcontroller or analog controller into the high-current drive required to switch the gate of a power MOSFET or IGBT. Half-bridge drivers specifically control one high-side and one low-side switch in a totem-pole configuration, which is the building block of DC-DC converters, motor drives, and Class D amplifiers. The IR2304SPBF belongs to the gate-driver category within the broader PMIC (Power Management IC) hierarchy, sitting between logic-level controllers and the discrete power switches they command.
Key features include 130 mA source/sink gate drive current at the outputs, 220 ns typical propagation delay, matched propagation delay between the two channels for low distortion, and 3.3 V, 5 V, and 15 V input-logic compatibility. Undervoltage lockout (UVLO) is provided for both high-side and low-side channels, and the device is fully operational to +600 V with negative transient voltage tolerance and dV/dt immunity on the high-side reference.
The IR2304SPBF architecture uses a level-shifting HVIC to translate the low-side logic input to the floating high-side channel referenced to the switching node. This monolithic construction eliminates the optocoupler or pulse transformer typically required for high-side drive in discrete designs, simplifying PCB layout and reducing BOM cost while improving reliability.
Typical applications include low-cost half-bridge and full-bridge DC-DC converters, three-phase motor driver front ends, Class D audio amplifiers, electronic ballasts for HID and fluorescent lighting, and general-purpose gate-drive boards where a single 600 V-tolerant IC replaces discrete drive circuitry.
When designing with this driver, ensure the bootstrap diode and capacitor values are sized for the high-side refresh current, which depends on switching frequency and high-side quiescent draw. Place a local ceramic bypass capacitor (typically 1 microfarad X7R) directly across VCC and VSS pins within 5 mm of the package to suppress the switching-current spikes.
This page synthesizes distributor pricing as of 2026-09-15, drop-in alternative analysis with parametric proximity scores, and practical design notes that go beyond the manufacturer datasheet to support sourcing and design decisions.
Drop-in alternatives for IR2304SPBF β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with IR2304SPBF (same form factor and footprint) β differing in Configuration, Package, RoHS Status.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
IR2304STRPBF
β Drop-Inβ In Stock
$0.39 / Unit
View Datasheet βIR2304PBF
β Drop-Inπ Reference alternative (not in catalog)
IR2104SPBF
β Drop-Inβ In Stock
$0.41 / Unit
View Datasheet βFAN7382MX
β Drop-Inπ Reference alternative (not in catalog)
UCC27714DR
β Drop-Inπ Reference alternative (not in catalog)
IRS2104SPBF
β Drop-Inπ Reference alternative (not in catalog)
IR2304SPBF Maximum Ratings & Electrical Characteristics
| Product Type | Half-Bridge Gate Driver IC |
| Configuration | High and Low Side, Independent Channels |
| Number of Outputs | 2 |
| Maximum Offset (Bootstrap) Voltage | 600 V |
| Gate Drive Supply Voltage (VCC) | 10 V to 20 V |
| Output Source/Sink Current | 60 mA / 130 mA |
| Propagation Delay (Typical) | 220 ns |
| Input Logic Compatibility | 3.3 V, 5 V, 15 V |
| Undervoltage Lockout (UVLO) | Both High-Side and Low-Side Channels |
| Negative Transient Voltage Tolerance | Yes (dV/dt immune) |
| Logic Input Polarity | Non-Inverting |
| Package | 8-Pin SOIC (SO-8 N) |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40 C to +125 C |
| Technology | HVIC + Latch-Immune CMOS, Monolithic |
| RoHS Status | Compliant (Pb-free) |
IR2304SPBF Pin Configuration
| Pin 1 | VCC β Logic and gate drive supply voltage (10 V to 20 V) |
| Pin 2 | HIN β Logic input for high-side output (non-inverting) |
| Pin 3 | LIN β Logic input for low-side output (non-inverting) |
| Pin 4 | GND β Ground reference for logic and low-side driver |
| Pin 5 | LO β Low-side gate drive output |
| Pin 6 | VS β High-side floating supply return (switching node) |
| Pin 7 | HO β High-side gate drive output |
| Pin 8 | VB β High-side floating supply (bootstrap) |
Typical Applications
IR2304SPBF is suitable for 6 applications: Low-Cost Half-Bridge DC-DC Converter, Three-Phase Motor Drive Front End, Class D Audio Amplifier Output Stage, HID and Fluorescent Electronic Ballast, Solar Microinverter Power Stage, Induction Cooktop Resonant Inverter.
Low-Cost Half-Bridge DC-DC Converter
The IR2304SPBF drives the high-side and low-side MOSFETs in a 400V-input half-bridge DC-DC converter for telecom auxiliary supplies and industrial point-of-load conversion. Its 600V bootstrap rating and matched 220ns channel delay keep duty-cycle distortion below 1% across the operating range, while the integrated HVIC eliminates optocouplers that would otherwise be required for high-side drive. Place 10 microfarad X7R bypass capacitors on VCC and VBS within 5 mm of the pins.
Recommended
Three-Phase Motor Drive Front End
The IR2304SPBF serves as the gate driver for each phase leg of a 400V to 480V three-phase inverter used in industrial motor drives, HVAC compressors, and pump controllers. Its dV/dt immunity and negative transient tolerance handle the harsh switching-node ringing of motor windings, while the 60/130 mA drive strength is sufficient for IGBT modules up to 20 kHz switching. Three IR2304SPBF devices (one per phase) plus a low-side shunt amplifier form a complete 3-phase drive stage.
Recommended
Class D Audio Amplifier Output Stage
The IR2304SPBF drives the half-bridge output stage of a 200W to 500W Class D audio amplifier where the matched channel delay and low propagation distortion preserve audio fidelity. Operating from a +/-35V or single 70V bus, the driver controls MOSFET pairs that switch at 250 kHz to 500 kHz PWM. Its 600V rating provides substantial headroom for bus transients, and the SO-8 package fits within the tight amplifier-module form factor used in home theater and automotive audio systems.
Recommended
HID and Fluorescent Electronic Ballast
The IR2304SPBF is a workhorse driver in 400V electronic ballasts for high-intensity discharge (HID) lamps and high-frequency fluorescent lighting. Its 600V rating handles the inductor-resonant flyback voltage transients, while the undervoltage lockout on both channels protects the lamp filaments during cold-start. The matched propagation delay ensures symmetric switching of the resonant tank, preventing lamp flicker and extending lamp life.
Recommended
Solar Microinverter Power Stage
In 400V-grid-tied solar microinverters, the IR2304SPBF drives the primary-side MOSFETs of a half-bridge DC-DC stage that boosts panel voltage (typically 30-60V) up to the 400V link voltage. Its wide 10-20V gate drive supply allows direct operation from a 15V auxiliary rail, and the latch-immune CMOS technology survives the harsh EMI environment of a switching power stage. Three IR2304SPBF parts form a 3-phase variant for higher-power string inverters.
Recommended
Induction Cooktop Resonant Inverter
The IR2304SPBF drives the resonant half-bridge in a 1 kW to 3 kW induction cooktop where the switching frequency varies from 20 kHz to 100 kHz to track the LC tank. The driver's matched delay keeps the resonant current balanced between the two switches, preventing DC bias that could saturate the cooktop coil. Its 600V rating and negative transient immunity handle the high dV/dt of the resonant tank, and the 8-pin SOIC package fits the compact cooktop-module form factor.
Recommended
Recommended Products Summary
Engineering reference data for IR2304SPBF β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | IR2304STRPBF | IR2304PBF | FAN7382MX | UCC27714DR | IRS2104SPBF |
|---|---|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | onsemi | Texas Instruments | Infineon |
| Package | 8-Pin SOIC (SO-8 N) | 8-Pin SOIC (SO-8 N) | 8-Pin PDIP (through-hole) | 8-Pin SOIC | 8-Pin SOIC | 8-Pin SOIC (SO-8 N) |
| Maximum Offset Voltage | 600 V | 600 V | 600 V | 600 V | 600 V | 600 V |
| Gate Drive Supply Voltage | 10 V to 20 V | 10 V to 20 V | 10 V to 20 V | 10 V to 20 V | 10 V to 20 V | 10 V to 20 V |
| Output Source/Sink Current | 60 mA / 130 mA | 60 mA / 130 mA | 60 mA / 130 mA | 350 mA / 650 mA | 4 A peak (much higher) | 130 mA / 270 mA |
| Propagation Delay | 220 ns | 220 ns | 220 ns | 170 ns | 100 ns | 220 ns |
| Logic Input Compatibility | 3.3 V / 5 V / 15 V | 3.3 V / 5 V / 15 V | 3.3 V / 5 V / 15 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V / 15 V |
| Logic Input Polarity | Non-Inverting (HIN/LIN shared) | Non-Inverting (HIN/LIN shared) | Non-Inverting (HIN/LIN shared) | Non-Inverting | Independent HIN/LIN | Independent HIN/LIN + SD pin |
| Unit Price (qty 1, as of 2026-09-15) | $0.78 | $0.78 | $0.85 | $0.95 | $1.40 | $0.92 |
Key Differentiators
- Lowest-cost monolithic 600V half-bridge driver in 8-pin SOIC (vs UCC27714DR)
- Matched 220ns channel delay for low-distortion half-bridge switching (vs FAN7382MX)
- Wide 10-20V gate drive supply supports IGBT and high-Vth MOSFETs (vs IRS2104SPBF)
Design Notes
The bootstrap circuit on the IR2304SPBF requires an external diode (typically UF4007 or a fast-recovery schottky) from VCC to VB, plus a bootstrap capacitor from VB to VS sized for the high-side quiescent current and gate charge. A 0.1 microfarad to 1 microfarad X7R ceramic is typical for switching frequencies below 100 kHz. The bootstrap capacitor must refresh on every low-side ON cycle; for continuous high-side duty cycles above 95%, add an auxiliary isolated supply.
Place VCC bypass capacitor (1 microfarad X7R minimum, 10 microfarad recommended) directly between pins 1 (VCC) and 4 (GND) within 5 mm of the package to suppress switching-current spikes. The high-side bypass from VB (pin 8) to VS (pin 6) should also be placed within 5 mm. Use a star-ground topology: connect the IR2304SPBF ground pin directly to the power-stage shunt resistor ground, not to the digital logic ground, to prevent ground bounce from corrupting the input logic.
Estimated: at 25 C ambient with 600V/130mA output and continuous 100 kHz switching, the IR2304SPBF dissipates approximately 0.4 W. With SOIC-8 thermal resistance of approximately 150 C/W theta_JA on a 1-oz 2-layer board, junction temperature rises roughly 60 C above ambient, well within the 125 C rating. For continuous operation above 100 kHz or high ambient temperatures, add thermal vias under the exposed lead paddle or use the IR2304PBF PDIP package which has lower thermal resistance.
Do NOT use the IR2304SPBF as a drop-in replacement for the IR2104 or IRS2104 - although all are 8-pin SOIC half-bridge drivers from Infineon, the pin assignments differ. The IR2304 has HIN (pin 2) and LIN (pin 3) tied to a common non-inverting logic function, while the IR2104/IRS2104 have separate HIN/LIN with an SD (shutdown) pin. Substituting without PCB modification will result in non-functional or damaged circuits. Always verify the pinout against the specific datasheet.
Compliance Information
Pb-free (PbF suffix) per Infineon part numbering convention. Qualified for the Industrial market per datasheet. AEC-Q100 not applicable - this is a driver IC, not a primary automotive-qualified part.
