IR21064STRPBF - 600V Half-Bridge Gate Driver IC | Infineon
MPN: IR21064STRPBF β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.71 | $1.71 |
| 10 | $1.26 | $12.60 |
| 100 | $1.03 | $103.00 |
| 500 | $0.93 | $465.00 |
| 1,000 | $0.9 | $900.00 |
| 2,500 | $0.87 | $2,175.00 |
IR21064STRPBF Overview
A gate driver IC is a power management semiconductor that sits between a low-power control signal (typically from a microcontroller or PWM controller) and a power switch (IGBT, MOSFET, or GaN device). Its job is to level-shift the control logic to the voltage domain required by the gate of the high-side switch, source and sink substantial peak current to charge and discharge the gate quickly, and provide isolation between the control domain and the high-voltage switching node. Half-bridge drivers specifically handle the high-side and low-side switch pair that form one phase leg of an inverter, motor drive, or synchronous rectifier.
Key features of the IR21064STRPBF include a 600 V maximum offset voltage on the high-side channel, allowing operation from 400 V rectified bus rails with margin, and an integrated bootstrap diode and bootstrap driver that simplifies the floating supply design for the high-side switch. The driver is non-inverting, with logic inputs that accept standard 3.3 V or 5 V CMOS levels, and includes a dedicated VSS pin for logic ground return that isolates logic-side noise from the power-side ground. The SOIC-14 footprint provides a compact, surface-mountable form factor with adequate thermal dissipation for the driver's quiescent losses.
The IR21064STRPBF is built on Infineon's high-voltage junction-isolation process, with a latch-up immune CMOS input stage and a proprietary level-shifter that handles the high dV/dt common-mode transients common on switching nodes. The 0.2 A source / 0.35 A sink asymmetry is intentional: MOSFET and IGBT gates typically require more current to discharge (turn-off) than to charge (turn-on) because of the Miller plateau region, so a stronger sink driver speeds turn-off and reduces switching losses. Propagation delay is matched between the high-side and low-side channels to minimize dead-time skew in complementary switching applications.
Typical applications include motor drives for industrial fans, pumps, and small appliances, switch-mode power supplies (SMPS) for server and telecom rectifiers, solar inverters, and Class D audio amplifiers. It is also widely used in uninterruptible power supplies (UPS), welding equipment, and induction heating converters where a half-bridge or full-bridge topology is the natural choice.
When designing with the IR21064STRPBF, observe the bootstrap capacitor refresh requirement: the bootstrap capacitor must be sized to hold the high-side supply above the undervoltage lockout threshold during the longest low-side-on interval. Place the bootstrap capacitor as close as possible to the VB and VS pins to minimize parasitic inductance that can cause ringing and false triggering of the high-side undervoltage lockout.
This page synthesizes distributor pricing, verified drop-in alternatives, and practical PCB layout notes not consolidated in the Infineon datasheet alone.
Drop-in alternatives for IR21064STRPBF 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 IR21064STRPBF (same form factor and footprint) β differing in Package, RoHS Status, Number of Drivers, Fall Time, Logic Input Compatibility.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
IR21064SPBF
β Drop-Inπ Reference alternative (not in catalog)
IR2110STRPBF
β Drop-In β οΈ εζ°εΎ ιͺθ―β In Stock
$1.35 / Unit
View Datasheet βIR2113STRPBF
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
IR2153DSTRPBF
β Drop-Inπ Reference alternative (not in catalog)
IR21064STRPBF Maximum Ratings & Electrical Characteristics
| Configuration | High-Side and Low-Side (Half-Bridge) |
| Driver Type | Non-Inverting |
| Number of Drivers | 2 |
| Maximum Offset Voltage | 600 V |
| Source Current (typical) | 0.2 A |
| Sink Current (typical) | 0.35 A |
| Logic Supply Voltage (VCC) | 10 V to 20 V |
| Logic Input Compatibility | 3.3 V / 5 V CMOS |
| Rise Time | 150 ns |
| Fall Time | 50 ns |
| Operating Temperature Range | -40C to +125C |
| Package | 14-SOIC (SOIC-14) |
| Mounting Type | Surface Mount |
| MSL Level | 2 |
| Lead-Free | Yes (PBF suffix) |
| RoHS Status | Compliant |
IR21064STRPBF Pin Configuration
| Pin 1 | VCC β Logic and low-side driver supply (10-20V) |
| Pin 2 | IN β Logic input for low-side and high-side driver |
| Pin 3 | SD β Shutdown input (active high/low per datasheet) |
| Pin 4 | VSS β Logic ground reference (isolated from COM) |
| Pin 5 | LO β Low-side gate drive output |
| Pin 6 | COM β Low-side driver return (power ground) |
| Pin 7 | VS β High-side floating supply return |
| 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 | NC β Not connected (per datasheet) |
| Pin 13 | NC β Not connected (per datasheet) |
| Pin 14 | NC β Not connected (per datasheet) |
Typical Applications
IR21064STRPBF is suitable for 6 applications: Half-Bridge Motor Drive, Switch-Mode Power Supply (SMPS), Solar Micro-Inverter, Class D Audio Amplifier, Uninterruptible Power Supply (UPS), Induction Heating Cooktop.
Half-Bridge Motor Drive
The IR21064STRPBF is a natural fit for half-bridge motor drive stages driving IGBTs or MOSFETs in H-bridge and 3-phase inverter topologies up to 400 V rectified bus. Its 600 V offset rating provides ample margin on 230 VAC rectified rails, and the 0.2 A source / 0.35 A sink capability comfortably drives gate charges up to ~50 nC at 50 kHz switching. The integrated bootstrap eliminates the discrete charge-pump diode and resistor, reducing BOM count and PCB area. Its matched high/low-side propagation delays minimize dead-time insertion, improving motor efficiency by reducing body-diode conduction losses.
Recommended
Switch-Mode Power Supply (SMPS)
In half-bridge and full-bridge SMPS converters, the IR21064STRPBF provides the high-side level shift and gate drive required for primary-side switching at 400 V rectified mains. Its 150 ns rise / 50 ns fall time is well-matched to hard-switched converters in the 50-200 kHz range, and the 0.35 A sink current accelerates turn-off to minimize switching losses. The dedicated VSS pin lets designers separate noisy logic ground from the power ground return, which is critical for clean PWM signals in digitally-controlled SMPS.
Recommended
Solar Micro-Inverter
For solar micro-inverters converting 30-60 VDC panel output to grid-tied AC, the IR21064STRPBF drives the low-voltage DC-side half-bridge in a push-pull or full-bridge stage followed by a step-up transformer. While its 600 V rating is overkill for the primary side, the same driver reliably handles the high-voltage grid-side bridge feeding the LC filter. The wide 10-20 V VCC range accommodates auxiliary supplies derived from the PV panel without tight regulation.
Recommended
Class D Audio Amplifier
In Class D audio amplifiers, the IR21064STRPBF drives the output half-bridge MOSFETs that switch at 250-500 kHz to generate the PWM audio waveform. Its 150 ns rise / 50 ns fall times keep dead-time short, preserving audio fidelity and limiting idle losses. The matched propagation delay between high-side and low-side channels prevents DC offset on the output, which would otherwise saturate the LC output filter. The separate VSS pin is valuable here to keep PWM switching noise out of the audio ground path.
Recommended
Uninterruptible Power Supply (UPS)
UPS systems use half-bridge and full-bridge converters in both the battery-side boost stage and the inverter stage that synthesizes 120/230 VAC from a 48 V or 400 V DC bus. The IR21064STRPBF's 600 V rating suits the inverter stage running off 400 V DC link rails, while its 0.35 A sink current drives IGBTs with reasonable gate charge for kW-class UPS modules. The industrial -40C to +125C temperature rating supports battery-room and outdoor cabinet installations.
Recommended
Induction Heating Cooktop
Induction heating cooktops use a resonant half-bridge or full-bridge converter operating at 20-100 kHz to drive the induction coil. The IR21064STRPBF's 0.35 A sink current and 600 V rating make it well-suited to the resonant tank where IGBTs switch high currents at high voltages. The matched propagation delays ensure balanced switching that prevents DC bias on the resonant capacitor, which would degrade coil efficiency and cause audible humming.
Recommended
Recommended Products Summary
Engineering reference data for IR21064STRPBF β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | IR21064SPBF | IR2110STRPBF | IR2113STRPBF | IR2153DSTRPBF |
|---|---|---|---|---|---|
| Package | 14-SOIC | 14-SOIC - same | 14-SOIC - same | 14-SOIC - same | 14-SOIC - same |
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon |
| Maximum Offset Voltage | 600 V | 600 V | 500 V | 600 V | 600 V |
| Source Current (typical) | 0.2 A | 0.2 A | 2.0 A | 2.0 A | 0.25 A |
| Sink Current (typical) | 0.35 A | 0.35 A | 2.0 A | 2.0 A | 0.5 A |
| Configuration | Half-Bridge (1 HS + 1 LS) | Half-Bridge (1 HS + 1 LS) | Half-Bridge (1 HS + 1 LS) | Half-Bridge (1 HS + 1 LS) | 3-Phase Driver |
| Dedicated VSS Logic Ground Pin | Yes | Yes | No | No | No |
| Rise / Fall Time | 150 ns / 50 ns | 150 ns / 50 ns | 100 ns / 80 ns | 100 ns / 80 ns | 200 ns / 100 ns |
Key Differentiators
- Dedicated VSS logic-ground pin for noise isolation (vs IR2110STRPBF)
- Matched high-side and low-side propagation delays (vs IR2113STRPBF)
- Industry-standard SOIC-14 footprint with broad second-source availability (vs IR2153DSTRPBF)
Design Notes
Bootstrap capacitor sizing for the IR21064STRPBF must account for the high-side quiescent current (IQBS), gate charge of the driven MOSFET, and the maximum low-side on-time. As a rule of thumb, use CBOOT >= 10 * QG / (VCC - VBS_UVLO), where QG is the total gate charge at the driven voltage. Use a 1 uF X7R ceramic for most half-bridge applications up to 100 kHz, increasing to 2.2-4.7 uF for slow-switching IGBT applications. Place the bootstrap capacitor as close as possible to pins VB (9) and VS (7) to minimize parasitic inductance.
Separate the power ground (COM, pin 6) from the logic ground (VSS, pin 4) on the PCB and join them at a single point near the driver's COM pin. This star-ground arrangement prevents high di/dt switching currents from creating ground bounce that could mis-trigger the logic inputs. Keep the high-side switching node (VS) traces short and away from logic-level traces to avoid capacitive coupling that could exceed the driver's common-mode dV/dt rating.
Do not exceed the maximum VCC supply voltage of 20 V - the IR21064STRPBF does not include an internal clamp. Adding a 22 V Zener from VCC to COM is recommended as a protection measure. Also, do not operate with VS below -5 V referenced to COM during switching transitions, as this can forward-bias the level-shifter and cause latch-up. Add a small Schottky diode (e.g., BAT54S) from COM to VS if reverse recovery is a concern in the application.
The 14-SOIC package has a thermal resistance of approximately 90 C/W (estimated: from JEDEC 4-layer test board conditions). At a quiescent current of 1 mA and VCC = 15 V, the IR21064STRPBF dissipates only ~15 mW, so thermal rise is negligible. However, the package's small copper pad limits gate-drive power at high switching frequencies; for continuous operation above 200 kHz with high-gate-charge MOSFETs, consider the IR2110STRPBF instead.
Compliance Information
RoHS and REACH compliant per Infineon product page; lead-free per PBF suffix. AEC-Q100 not applicable - this is a non-automotive industrial gate driver. Halogen-free status not explicitly stated in verified data.
