IR21834STRPBF - 600V Half-Bridge Gate Driver IC | Infineon
MPN: IR21834STRPBF β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.95 | $1.95 |
| 10 | $1.75 | $17.50 |
| 100 | $1.55 | $155.00 |
| 500 | $1.32 | $660.00 |
| 1,000 | $1.18 | $1,180.00 |
| 2,500 | $1.05 | $2,625.00 |
Drop-in alternatives for IR21834STRPBF β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
IR2184STRPBF
β Drop-Inπ Reference alternative (not in catalog)
IR2114SSTRPBF
β Drop-Inβ In Stock
$1.84 / Unit
View Datasheet βIR21834S
β Drop-Inπ Reference alternative (not in catalog)
IR2114SSPBF
β Drop-Inβ In Stock
$3.7 / Unit
View Datasheet βIRS2302STRPBF
β Drop-Inβ In Stock
$0.54 / Unit
View Datasheet βIRS2011STRPBF
β Drop-Inβ In Stock
$1.55 / Unit
View Datasheet βIR21834STRPBF Maximum Ratings & Electrical Characteristics
| Configuration | Half-Bridge |
| Input Type | Inverting, Non-Inverting |
| Number of Outputs | 2 (High Side / Low Side) |
| Number of Drivers | 2 |
| Peak Source Current | 1.9 A |
| Peak Sink Current | 2.3 A |
| Supply Voltage (VCC) | 10 V to 20 V |
| Maximum Floating Supply Voltage | 600 V |
| Propagation Delay | 180 ns (typical) |
| Logic Input Compatibility | 3.3 V and 5 V |
| Undervoltage Lockout | Yes (both channels) |
| dV/dt Immunity | Yes |
| Negative Transient Tolerance | Yes |
| Package | 14-SOIC (3.90 mm width) |
| Mounting Type | Surface Mount |
| Packaging | Tape & Reel |
| Operating Temperature | -40 C to +125 C |
| RoHS Status | Compliant |
IR21834STRPBF Pin Configuration
| Pin 1 | VCC β Logic and low-side gate-drive supply (10V to 20V) |
| Pin 2 | HIN β Logic input for high-side output (inverting/non-inverting per datasheet) |
| Pin 3 | LIN β Logic input for low-side output |
| Pin 4 | SD β Shutdown pin (active) |
| Pin 5 | GND β Logic ground |
| Pin 6 | LO β Low-side gate-drive output |
| Pin 7 | VS β High-side floating supply return / switching node |
| Pin 8 | HO β High-side gate-drive output |
| Pin 9 | VB β High-side floating supply (bootstrap) |
| Pin 10 | NC β Not connected (per datasheet) |
| Pin 11 | NC β Not connected (per datasheet) |
| Pin 12 | COM β Low-side gate-drive return |
| Pin 13 | VSS β Logic ground reference |
| Pin 14 | NC β Not connected (per datasheet) |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
IR21834STRPBF is suitable for 7 applications: BLDC/PMSM Motor Drive Inverter, Half-Bridge SMPS Converter, Solar Microinverter / String Inverter, Induction Heating Inverter, Uninterruptible Power Supply (UPS), Class-D Audio Amplifier Output Stage, EV Auxiliary DC-DC Converter.
BLDC/PMSM Motor Drive Inverter
The IR21834STRPBF is well suited for BLDC and PMSM motor drive inverter stages operating from 200V to 600V DC bus rails. Its 600V floating channel rating, 1.9A source / 2.3A sink drive current, and 180ns typical propagation delay enable accurate PWM control of three-phase half-bridge stages driving IGBTs or 600V MOSFETs. Place one IR21834 per phase with the high-side bootstrapped from the low-side supply via an external diode and 100nF-1uF ceramic capacitor. The 14-SOIC package footprint allows compact three-phase PCB layouts. Designed-in applications include industrial servo drives, e-bike controllers, and HVAC fan inverters where 600V tolerance is required and matched channel-to-channel delay ensures low torque ripple.
Recommended
Half-Bridge SMPS Converter
For half-bridge and full-bridge switched-mode power supplies, the IR21834STRPBF provides the high-side/low-side gate drive with built-in UVLO protection for both channels. Its 10V-20V gate-drive supply range matches standard MOSFET gate-drive requirements, and the 600V floating channel supports 400V bus designs with margin. Per Infineon datasheet recommendations, pair it with external bootstrap diode and capacitor to supply the high-side driver, and place bypass capacitors (1uF ceramic + bulk) close to VCC and VB pins. This topology is widely used in telecom power supplies, industrial welding equipment, and induction heating inverters where 600V switching capability and reliable bootstrap refresh are critical.
Recommended
Solar Microinverter / String Inverter
Grid-tied solar inverters using half-bridge or H-bridge topologies benefit from the IR21834STRPBF's 600V rating and matched propagation delay between channels. The driver's dV/dt immunity prevents spurious high-side turn-on during fast switching-node transients in 400V to 600V PV string inverter applications. Combined inverting/non-inverting logic input allows direct connection to a single PWM output without external logic gates. Used in residential solar microinverters and commercial string inverters where each phase leg requires an independent bootstrap-fed high-side driver. Verify bootstrap capacitor refresh time under minimum duty-cycle conditions per IR datasheet design guidelines.
Recommended
Induction Heating Inverter
Resonant induction heating inverters operating at 20-100 kHz with 600V bus rails use the IR21834STRPBF to drive IGBT half-bridge legs. Its 1.9A/2.3A peak gate-drive current handles the gate charge of typical 600V/40A IGBTs used in induction cooktops and industrial heating systems. The matched propagation delay between high-side and low-side channels ensures balanced duty cycle and prevents transformer saturation in resonant tanks. Negative transient voltage tolerance on the high-side channel is essential for handling the resonant voltage overshoots inherent in LLC and series-resonant topologies.
Recommended
Uninterruptible Power Supply (UPS)
On-line UPS systems use the IR21834STRPBF to drive the half-bridge stages in battery-to-AC inverters, especially in 220V/120V output units operating from 384V DC bus rails. The 600V rating provides adequate margin for 230V AC outputs and supports the bidirectional power flow required for battery charging and inverter modes. Combined inverting/non-inverting input simplifies the control interface with digital signal controllers used in modern UPS designs. The driver's UVLO on both channels prevents cross-conduction during brownout events, protecting the IGBTs from destructive shoot-through currents.
Recommended
Class-D Audio Amplifier Output Stage
The IR21834STRPBF drives the half-bridge output stages of high-power Class-D audio amplifiers operating from +/-200V to +/-300V rails. Its 1.9A/2.3A drive strength and 180ns propagation delay enable clean PWM switching at audio frequencies (20kHz to 500kHz switching). Combined logic inputs allow direct connection to a single PWM modulator output. Used in professional audio amplifiers, subwoofers, and high-fidelity consumer audio where 600V MOSFET switching and matched channel delay preserve low total harmonic distortion. Verify bootstrap refresh under all duty-cycle conditions including full-power sine wave modulation.
Recommended
EV Auxiliary DC-DC Converter
Electric vehicle auxiliary converters stepping down 400V or 800V traction battery to 12V/48V use the IR21834STRPBF in isolated half-bridge or full-bridge primary-side stages. The 600V rating covers 400V systems; for 800V systems an 800V/1200V driver like IR2117 is required. Its combined logic input simplifies isolation-transformer-driven control from a low-voltage DSP. The driver's dV/dt immunity is critical for high-frequency (100kHz+) isolated topologies. AEC-Q100 qualification is NOT applicable for this part - automotive designs should verify Infineon's automotive-grade portfolio separately for AEC-Q100-qualified equivalents.
Recommended
Recommended Products Summary
Engineering reference data for IR21834STRPBF β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | IR2184STRPBF | IR2114SSTRPBF | IRS2302STRPBF |
|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon |
| Package | 14-SOIC | 14-SOIC - same | 14-SOIC - same | 14-SOIC - same |
| Maximum Floating Voltage | 600 V | 600 V | 600 V | 600 V |
| Peak Source Current | 1.9 A | 1.9 A | 1.0 A | 0.2 A |
| Peak Sink Current | 2.3 A | 2.3 A | 1.5 A | 0.35 A |
| Propagation Delay | 180 ns | 180 ns | 120 ns | 200 ns |
| Input Logic | Inverting + Non-Inverting combined | Non-Inverting HIN/LIN | Non-Inverting HIN/LIN | Non-Inverting HIN/LIN |
| Shutdown Pin | Yes | Yes | Yes | No |
| UVLO Both Channels | Yes | Yes | Yes | Yes |
Key Differentiators
- Combined inverting/non-inverting logic input in single 14-SOIC package (vs IR2184STRPBF)
- Higher peak drive current than competing parts in same footprint (vs IR2114SSTRPBF)
- Better for high-current 600V applications than low-current drivers (vs IRS2302STRPBF)
- Lower propagation delay than IR2183 family (vs IR2183STRPBF)
Design Notes
Bootstrap capacitor sizing: per the IR datasheet, use a 100nF to 1uF ceramic capacitor between VB and VS to supply the high-side floating gate drive. Choose a low-ESR ceramic (X7R or X5R, 25V or higher rating). The bootstrap diode (external, ultra-fast) must withstand the full bus voltage plus margin; a 1A-rated UF4007 or similar is typical. Verify bootstrap refresh under all PWM duty-cycle conditions to prevent the high-side supply (VB) from falling below the UVLO threshold during long low-side ON times.
Estimated: at 25 kHz switching with 50nC gate charge MOSFETs, the IR21834STRPBF dissipates approximately 0.05W per channel (CV^2*f = 50nC * 20V * 25kHz = 25mW per channel). This is negligible thermal load - the 14-SOIC package does not require a thermal pad or heatsink for typical driver duty cycles. However, ensure the VCC and VB bypass capacitors (1uF ceramic + bulk) are placed within 5mm of their respective supply pins to handle the gate-charge current spikes without voltage ringing.
PCB layout guidelines per IR datasheet: keep the high-side switching node (VS) trace short to minimize parasitic inductance and EMI. Place bootstrap capacitor (CB) and bypass capacitors (CVCC, CVB) directly between their respective supply and ground pins with minimum trace length. Use a ground plane under the IC to reduce logic-input noise coupling. Separate the low-voltage logic ground (GND pin 5) from the high-current power ground (COM pin 12) and join them at a single point near the IC's GND pin to avoid ground bounce during switching transitions.
Common pitfalls: (1) Do not exceed 600V on the floating high-side supply (VB-VS) - this is the most common failure mode. (2) Verify the SD pin is properly tied (typically to VCC for active operation, or to GND through a pull-down to disable). (3) Negative VS transients below -5V can cause logic upset - add a clamp diode or snubber if the application generates large negative swings. (4) Do not operate VCC below 10V or the UVLO will engage and disable both channels. (5) The HO and LO outputs are not designed to drive large capacitive loads directly - always use external gate resistors to limit peak current and dampen ringing.
Compliance Information
RoHS compliant per Infineon product page. Standard part is NOT AEC-Q100 qualified - this is an industrial-grade driver. For AEC-Q100 automotive applications, consult Infineon's automotive-grade gate driver portfolio separately.
