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Infineon Technologies IRS2109SPBF
- Part No.:
- IRS2109SPBF
- Manufacturer:
- Infineon Technologies
- Category:
- Gate Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
IRS2109SPBF.pdf
- Description:
- IC GATE DRVR HALF-BRIDGE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,572
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Product details
Overview
IRS2109SPBF from Infineon Technologies is a high-voltage, high-speed half-bridge gate driver IC designed to control N-channel MOSFETs or IGBTs in high-side/low-side configurations. It features 600 V floating channel capability, 750 ns typical turn-on propagation delay, 200 ns turn-off delay, and integrated 540 ns deadtime. It operates with 10–20 V gate drive supply and supports 3.3 V/5 V/15 V logic inputs - used in motor inverters, SMPS, and induction heating systems.
For engineers reviewing the IRS2109SPBF datasheet, IRS2109SPBF pinout, IRS2109SPBF application, or IRS2109SPBF equivalent, key selection criteria include bootstrap-compatible floating channel operation, dV/dt immunity up to 50 V/ns, undervoltage lockout on both channels, matched propagation delays, and SOIC-8 package compatibility for compact high-voltage gate drive layouts.
Technical Context
The IRS2109SPBF integrates a high-voltage level shifter and latch-immune CMOS logic to enable robust high-side switching up to +600 V referenced to VS. Its dual-channel architecture delivers in-phase HO output relative to IN input and complementary LO output with cross-conduction prevention logic.
It employs internal pulse filtering and UV detection circuits for both VCC and VB supplies, with hysteresis of 0.7 V on undervoltage thresholds. The SOIC-8 variant lacks DT and VSS pins (unlike IRS21094), fixing deadtime at 540 ns and referencing all logic to COM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Floating Voltage | +600 V - enables direct high-side drive in 400 V DC bus applications like PFC and motor drives |
| Gate Drive Supply Range | 10 V to 20 V - ensures reliable MOSFET/IGBT turn-on across temperature and load variations |
| Propagation Delay (ton/toff) | 750 ns / 200 ns - supports >500 kHz switching frequencies with precise timing control |
| Deadtime | Fixed 540 ns - prevents shoot-through in half-bridge topologies without external resistor tuning |
| Logic Compatibility | 3.3 V, 5 V, 15 V - interfaces directly with microcontrollers, DSPs, and FPGA GPIO without level shifters |
| dV/dt Immunity | 50 V/ns - maintains stable operation during fast voltage transients in noisy power stages |
| Output Current (IO+/IO−) | 120 mA / 250 mA - sufficient to charge/discharge 1 nF gate capacitance in <100 ns |
Pinout & Package
IRS2109SPBF is housed in an 8-lead SOIC package with surface-mount footprint and RoHS-compliant finish. Thermal resistance RthJA is 200 °C/W under standard board-mounted conditions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Low-side and logic supply rail | Provides 10–20 V bias for internal logic and LO driver; referenced to COM |
| IN | Logic input for both HO and LO | In-phase with HO output; accepts 3.3 V/5 V/15 V CMOS/LSTTL signals referenced to COM |
| SD | Shutdown control input | Active-high signal that disables both HO and LO outputs simultaneously |
| COM | Low-side return and logic ground | Reference node for VCC, IN, SD, and LO; must be connected to low-side source/pad |
| VB | High-side floating supply connection | Accepts bootstrap capacitor voltage up to 625 V; powers high-side driver stage |
| HO | High-side gate drive output | Drives N-MOSFET/IGBT gate referenced to VS; capable of sourcing 120 mA peak |
| VS | High-side floating return | Connects to switch node between high- and low-side devices; defines floating domain reference |
| LO | Low-side gate drive output | Drives low-side device gate referenced to COM; sinks 250 mA peak current |
Key Features
| Feature | Design Value |
|---|---|
| Floating channel for bootstrap operation | Enables high-side drive without isolated supplies; supports 600 V offset between VB and VS |
| Matched propagation delays | ≤70 ns mismatch between HO and LO paths ensures symmetrical switching and minimal timing skew |
| Undervoltage lockout (UVLO) | Independent 8.2–9.0 V threshold on both VCC and VB rails prevents erratic output during brownout |
| Cross-conduction prevention logic | Hardware-enforced interlock prevents simultaneous HO/LO activation even during fast IN transitions |
| Lower di/dt gate driver | Controlled slew rate reduces EMI and improves noise immunity in high-dV/dt environments |
Applications
| Motor Inverter Control | Switch-Mode Power Supply |
|---|---|
Use Scenario: Driving N-channel MOSFET half-bridge in 3-phase BLDC motor controller with 300–400 V DC bus. IC Role / Device Role / Timing Role: Provides synchronized, shoot-through-protected gate drive to upper/lower switches with precise deadtime. Use Value: Fixed 540 ns deadtime eliminates external timing components while maintaining safe commutation margins. | Use Scenario: Controlling primary-side synchronous rectifier and secondary-side half-bridge in resonant LLC converter. IC Role / Device Role / Timing Role: Delivers high-speed, dV/dt-immune gate signals to high-side and low-side FETs operating at 300–700 kHz. Use Value: 50 V/ns transient immunity ensures stable operation during fast ZVS/ZCS transitions. |
| Induction Heating System | Industrial AC Drive |
Use Scenario: Gate driving parallel IGBTs in resonant inverter stage for 20–100 kHz heating coils. IC Role / Device Role / Timing Role: Supplies robust high-current drive to IGBT gates with matched turn-on/turn-off delays. Use Value: 120 mA/250 mA peak output current charges large gate capacitances rapidly, minimizing conduction losses. | Use Scenario: Half-bridge stage in variable-frequency drive feeding 3-phase induction motor (0.75–5 kW). IC Role / Device Role / Timing Role: Interfaces MCU PWM signals to power stage with galvanically isolated gate drive capability via bootstrap. Use Value: 3.3 V logic compatibility allows direct connection to modern ARM Cortex-M microcontrollers without level-shifting circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar half-bridge gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IRS2108SPBF | Single-input, non-inverting output; no shutdown pin; identical 540 ns deadtime and SOIC-8 package | Lacks SD functionality - unsuitable where system-level fault shutdown is required | Select when shutdown control is handled externally or unnecessary |
| IR2109SPBF | Legacy marking of same die; identical electrical specs and pinout; discontinued but still available via legacy channels | No functional difference - full drop-in replacement with identical thermal and timing behavior | Prefer IRS2109SPBF for new designs due to active support and updated qualification |
Compared with IRS2108SPBF, IRS2109SPBF adds dedicated shutdown control without increasing footprint or complexity; versus IR2109SPBF, it offers identical performance with enhanced manufacturing traceability and long-term supply assurance.
Availability
IRS2109SPBF is available at Aetrix Electronics and suitable for motor inverters, switch-mode power supplies, induction heating systems, and industrial AC drives requiring stable component supply and automotive-grade reliability.
Supply support for IRS2109SPBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with leadership in high-voltage gate drivers and silicon carbide solutions.
The IRS21xx family targets high-efficiency, high-reliability half-bridge and full-bridge power conversion systems - engineered for ruggedized monolithic HVIC construction and bootstrap-based high-side drive in cost-sensitive industrial applications.
FAQ
What is the maximum allowable dV/dt at the VS pin?
The IRS2109SPBF is rated for 50 V/ns dV/dt at the VS pin under 8-lead PDIP conditions, and maintains latch immunity across its full operating temperature range. This specification ensures reliable level-shifting operation during fast switching transients in hard-switched topologies without false triggering or output glitches.
Can IRS2109SPBF drive SiC MOSFETs?
Yes - its 120 mA/250 mA peak output current, 750 ns/200 ns propagation delays, and 10–20 V gate drive range align with common SiC MOSFET gate requirements. However, layout must minimize parasitic inductance, and external gate resistors may be needed to dampen ringing due to higher SiC switching speeds.
Is a bootstrap diode required for high-side operation?
Yes - a fast recovery or Schottky bootstrap diode (e.g., 1N4148W or BAT54) is mandatory between VCC and VB to charge the floating supply capacitor during LO conduction. Diode reverse recovery time must be ≤30 ns to prevent VB discharge during high dV/dt events at VS.
Does IRS2109SPBF support 3.3 V microcontroller interfaces directly?
Yes - its VIH threshold is 2.5 V minimum and VIL is 0.8 V maximum, making it fully compatible with 3.3 V CMOS logic. No level shifter is needed when interfacing with STM32, PIC32, or ESP32 GPIOs, provided IN and SD are referenced to COM and driven within recommended voltage ranges.
IRS2109SPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Driven Configuration:
- Half-Bridge
- Channel Type:
- Synchronous
- Number of Drivers:
- 2
- Gate Type:
- IGBT, N-Channel MOSFET
- Voltage - Supply:
- 10V ~ 20V
- Logic Voltage - VIL, VIH:
- 0.8V, 2.5V
- Current - Peak Output (Source, Sink):
- 290mA, 600mA
- Input Type:
- Non-Inverting
- High Side Voltage - Max (Bootstrap):
- 600 V
- Rise / Fall Time (Typ):
- 100ns, 35ns
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
IRS2109SPBF FAQ
1.How can I place an order for IRS2109SPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for IRS2109SPBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for IRS2109SPBF reliable?
The price and inventory of IRS2109SPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRS2109SPBF is usually 5 days.
3.What payment methods are accepted for IRS2109SPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRS2109SPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IRS2109SPBF?
IRS2109SPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IRS2109SPBF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for IRS2109SPBF?
For technical support, including IRS2109SPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRS2109SPBF requirements.
6.How does Aetrix verify that IRS2109SPBF is sourced from the original manufacturer or authorized distributors?
All IRS2109SPBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that IRS2109SPBF meets industry standards.
7.What is the process for return or replacement of IRS2109SPBF?
All IRS2109SPBF units undergo pre-shipment inspection (PSI). If there is an issue with IRS2109SPBF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The IRS2109SPBF part is unused and in its original packaging.
Return procedure for IRS2109SPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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