IRS2112STRPBF - 600V Half-Bridge Gate Driver IC | Infineon
MPN: IRS2112STRPBF β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.42 | $3.42 |
| 10 | $2.97 | $29.70 |
| 100 | $2.55 | $255.00 |
| 500 | $2.21 | $1,105.00 |
| 1,000 | $1.88 | $1,880.00 |
IRS2112STRPBF Overview
A half-bridge gate driver IC is a type of power management semiconductor that translates low-power PWM control signals from a microcontroller or DSP into high-current drive signals capable of switching the gates of two stacked power switches (high-side and low-side). It sits hierarchically between the control IC and the power stage in motor drives, DC-DC converters, and class-D audio amplifiers, where it provides level shifting, bootstrap support, and undervoltage protection.
Key features include fully operational +600 V floating channel, dV/dt immunity, tolerance to negative transient voltages on the high-side, separate logic and gate-drive grounds, undervoltage lockout for both channels, 3.3 V logic compatibility, and a dedicated shutdown pin for fast protection turn-off. The wide-body SOIC-16 footprint offers an exposed thermal path suitable for moderate switching frequencies up to several hundred kHz.
The IRS2112STRPBF uses a proprietary HVIC and latch-immune CMOS process that delivers matched propagation delays between the high-side and low-side channels, preventing cross-conduction in the half-bridge. The floating channel uses a bootstrap capacitor to develop the high-side supply, simplifying the drive circuitry and reducing BOM cost compared to isolated gate-drive solutions.
Typical applications include permanent-magnet synchronous motor (PMSM) drives, three-phase inverter stages, half-bridge and full-bridge DC-DC converters, induction-heating converters, and class-D audio amplifiers. The 600 V rating comfortably supports 400 V rectified-mains systems with adequate derating.
When designing with this device, choose the bootstrap capacitor value carefully: C_Boot >= Q_gate / (V_CC - V_F - V_GS(min)) where Q_gate is the total gate charge of the high-side MOSFET/IGBT. The shutdown pin can be wire-OR'd with the fault output of a comparator for hardware-level overcurrent protection.
This page synthesizes distributor pricing, parametric drop-in alternatives, and practical bootstrap design notes not found in the standalone datasheet, giving engineers a faster path to a working half-bridge prototype.
Drop-in alternatives for IRS2112STRPBF 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 IRS2112STRPBF (same form factor and footprint) β differing in Package, RoHS Status, Input Logic Compatibility, Undervoltage Lockout, Configuration.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
IRS2113SPBF
β Drop-Inπ Reference alternative (not in catalog)
IRS2110SPBF
β Drop-Inβ In Stock
$0.72 / Unit
View Datasheet βIR2109SPBF
β Drop-Inβ In Stock
$1.05 / Unit
View Datasheet βIR2304SPBF
β Drop-Inβ In Stock
$0.48 / Unit
View Datasheet βIRS2112STRPBF Maximum Ratings & Electrical Characteristics
| Configuration | Half-bridge (high-side + low-side) |
| High-side Offset Voltage (max) | 600 V |
| Output Source Current (typ) | 0.29 A |
| Output Sink Current (typ) | 0.6 A |
| Gate Drive Supply Range (VCC) | 10 V to 20 V |
| Logic Supply Range (VDD) | 3.3 V to 20 V |
| Logic Input Compatibility | 3.3 V, 5 V, 15 V CMOS/TTL |
| Undervoltage Lockout | Both channels (VCC and VBS) |
| dV/dt Immunity | Yes (negative transient tolerant) |
| Shutdown Input | Yes (active-low) |
| Package | 16-pin SOIC wide-body |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40 C to +125 C |
| MSL Level | 2 (1 year floor life) |
| RoHS Status | Compliant (Pb-free PBF suffix) |
IRS2112STRPBF Pin Configuration
| Pin 1 | VCC β Gate-drive supply (10-20 V) |
| Pin 2 | HIN β High-side logic input (CMOS/TTL, 3.3V compatible) |
| Pin 3 | LIN β Low-side logic input (CMOS/TTL, 3.3V compatible) |
| Pin 4 | /SD β Shutdown input (active-low) |
| Pin 5 | VSS β Logic ground (return for VDD) |
| Pin 6 | VB β High-side bootstrap supply |
| Pin 7 | VS β High-side floating supply return |
| Pin 8 | HO β High-side gate-drive output |
| Pin 9 | NC β Not connected (per datasheet) |
| Pin 10 | NC β Not connected (per datasheet) |
| Pin 11 | VDD β Logic supply (3.3-20 V) |
| Pin 12 | NC β Not connected (per datasheet) |
| Pin 13 | LO β Low-side gate-drive output |
| Pin 14 | COM β Low-side gate-drive return |
| Pin 15 | VCC β Gate-drive supply (10-20 V, duplicate of pin 1) |
| Pin 16 | VDD β Logic supply (3.3-20 V, duplicate of pin 11) |
Typical Applications
IRS2112STRPBF is suitable for 6 applications: PMSM / BLDC Motor Drive Half-Bridge, Half-Bridge / Full-Bridge DC-DC Converter, Class-D Audio Amplifier Output Stage, Induction Heating Resonant Converter, Solar Inverter / PV String Combiner, Uninterruptible Power Supply (UPS) Half-Bridge.
PMSM / BLDC Motor Drive Half-Bridge
The IRS2112STRPBF drives one half-bridge leg of a three-phase PMSM or BLDC inverter, with the floating high-side channel capable of switching 600 V rails and the low-side channel referenced to COM. The 0.29 A source / 0.6 A sink rating covers IGBTs up to ~50 A and MOSFETs up to ~100 A at switching frequencies up to 20 kHz. The hardware /SD pin enables microsecond-scale overcurrent turn-off from a comparator, critical for protecting the power stage during rotor-lock events. Typical use: a 400 V rectified-mains 1.5 kW fan or pump drive with three IRS2112STRPBF ICs (one per phase).
Recommended
Half-Bridge / Full-Bridge DC-DC Converter
The IRS2112STRPBF drives the primary-side switches in a hard-switched half-bridge or full-bridge DC-DC converter, where its 600 V rating supports 380-420 V rectified-mains inputs and the bootstrap supply simplifies high-side drive. The matched high-side and low-side propagation delays prevent transformer flux walking in full-bridge topologies. Typical use: a 1 kW telecom rectifier module converting 400 V DC bus to 48 V isolated output at 100 kHz. The shutdown pin coordinates with the secondary-side fault opto for cycle-by-cycle current limit.
Recommended
Class-D Audio Amplifier Output Stage
The IRS2112STRPBF drives the output half-bridge in a class-D audio amplifier, where the 600 V rating is far above the 50 V bus of automotive or 24 V pro-audio systems, providing huge voltage margin for reliability. The 0.6 A sink current handles the large Qrr of body-diode recovery during deadtime, and the dV/dt immunity keeps the output clean at typical 250-500 kHz carrier frequencies. Typical use: a 200 W subwoofer plate amplifier with two IRS2112STRPBF ICs in a full-bridge BTL configuration, where the /SD pin is used for click-free muting on power-up.
Recommended
Induction Heating Resonant Converter
The IRS2112STRPBF drives the resonant half-bridge in an induction-heating cooktop or industrial heater, where it switches at 20-100 kHz into an LC tank. The high-side 600 V rating handles the resonant overshoot that can exceed twice the DC bus voltage. The matched propagation delays ensure symmetric duty cycles, which is critical for even heating-coil excitation. Typical use: a 2 kW domestic induction hob with two IRS2112STRPBF ICs driving the two halves of the resonant tank, with /SD wired to the pan-detection comparator for safety turn-off.
Recommended
Solar Inverter / PV String Combiner
The IRS2112STRPBF drives the half-bridge leg in a grid-tied solar microinverter or string inverter, where the 600 V high-side rating comfortably supports 600 V PV open-circuit strings (Voc). The 3.3 V logic compatibility allows direct connection to a low-voltage DSP or microcontroller PWM output, eliminating level-shifters. Typical use: a 600 W microinverter module converting one PV string to 230 V AC mains, with the /SD pin coordinated with the anti-islanding relay for grid-fault shutdown.
Recommended
Uninterruptible Power Supply (UPS) Half-Bridge
The IRS2112STRPBF drives the inverter half-bridge in an online UPS, converting the rectified battery DC bus to the AC output. The 600 V rating supports 192 V battery systems (Voc ~220 V) with margin, and the hardware shutdown pin enables fast transfer to bypass mode during fault conditions. Typical use: a 3 kVA online UPS with six IRS2112STRPBF ICs forming a three-phase inverter leg, with the /SD pin fed from the inverter-current-limit comparator for sub-cycle overcurrent protection.
Recommended
Recommended Products Summary
Engineering reference data for IRS2112STRPBF β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | IRS2113SPBF | IRS2110SPBF | IR2109SPBF | IR2304SPBF |
|---|---|---|---|---|---|
| Brand | Infineon | Infineon (same-brand) | Infineon (same-brand) | Infineon (same-brand) | Infineon (same-brand) |
| Package | 16-SOICWB | 16-SOICWB (same) | 16-SOICWB (same) | 16-SOICWB (same) | 16-SOICWB (same) |
| High-side Offset Voltage (max) | 600 V | 600 V | 500 V (-17%) | 600 V | 600 V |
| Output Source Current (typ) | 0.29 A | 0.29 A | 0.29 A | 0.12 A (-59%) | 0.13 A (-55%) |
| Output Sink Current (typ) | 0.6 A | 0.6 A | 0.6 A | 0.25 A (-58%) | 0.35 A (-42%) |
| Shutdown Pin | Yes (/SD) | Yes (DT/SD multi-function) | No | No | No |
| VCC / VDD Range | 10-20 V / 3.3-20 V | 10-20 V / 3.3-20 V | 10-20 V / 3.3-20 V | 10-20 V / 3.3-20 V | 10-20 V / 3.3-20 V |
| UVLO (both channels) | Yes (VCC + VBS) | Yes (VCC + VBS) | Yes (VCC + VBS) | Yes (VCC + VBS) | Yes (VCC + VBS) |
| Approx. Unit Price (qty 1000) | $1.88 | $2.05 | $1.62 | $1.40 | $1.25 |
Key Differentiators
- Hardware shutdown pin for fault turn-off (vs IRS2110SPBF)
- Higher sink current for fast turn-off (vs IR2109SPBF)
- True half-bridge deadtime control (vs IRS2004SPBF)
Design Notes
Estimated bootstrap capacitor sizing: C_Boot_min = Q_gate / (VCC - V_F - V_GS_min). For a typical 100 V MOSFET with Qg = 50 nC, VCC = 15 V, V_F = 0.7 V (UF4007), V_GS_min = 8 V, the minimum C_Boot is approximately 10 nF. Use 100 nF (10x margin) with a 25 V X7R ceramic or a film capacitor to keep VBS ripple under 100 mV at full switching frequency. Place the bootstrap diode directly between VCC and VB with the shortest possible trace.
At 100 kHz switching into a 50 nC gate charge, the IRS2112STRPBF's internal VCC supply draws approximately IQ + Qg x fsw = 1 mA + 50 nC x 100 kHz = 6 mA. In the SOIC-16WB package with theta_JA of approximately 80 C/W, this results in a junction temperature rise of less than 1 C above ambient - thermal management is rarely a concern. The exposed pad variant (if used) drops theta_JA to ~40 C/W.
Keep the high-side switching node (VS, HO) traces short and away from the logic input pins (HIN, LIN, /SD). Place the bootstrap capacitor (C_Boot) within 5 mm of the VB pin, and the VCC bypass capacitor (1 uF ceramic + 100 nF) within 3 mm of the VCC pin. Use a ground plane on the COM layer to minimize the high-current return-path inductance. Avoid running signal traces under the floating-supply region (pins 6-8).
Do not float the /SD pin - if unused, tie it to VDD through a 10 kohm pull-up. Do not exceed VBS of 20 V (absolute maximum). Do not apply a logic input before VCC and VDD are both established, or the part may latch up. The high-side channel will not operate if VS is pulled below COM by more than the negative-transient rating - add a TVS clamp across the half-bridge if the load is highly inductive.
Route the HIN and LIN traces as a matched differential pair to ensure equal propagation to both driver channels. Place a 10 kohm pull-down on HIN and LIN to keep the half-bridge in a safe state during MCU reset. Add a 100 ohm source resistor on HO and LO to dampen parasitic ringing with the gate-source capacitance of the driven MOSFET/IGBT.
Compliance Information
The 'PBF' suffix in the MPN confirms Pb-free / RoHS-compliant lead finish. Not AEC-Q100 qualified - select automotive-grade variants for vehicle applications. Halogen-free status not explicitly stated in the available data.
