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Infineon Technologies IRS21814STRPBF
- Part No.:
- IRS21814STRPBF
- Manufacturer:
- Infineon Technologies
- Category:
- Gate Drivers
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
IRS21814STRPBF.pdf
- Description:
- IC GATE DRVR HALF-BRIDGE 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,797
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Product details
Overview
IRS21814STRPBF from Infineon Technologies is a high-voltage, high-speed dual-channel gate driver IC for N-channel MOSFETs and IGBTs, featuring independent high-side (HO) and low-side (LO) outputs with 600 V floating capability, 1.4 A/1.8 A peak source/sink current, matched propagation delay ≤35 ns, and 3.3 V/5 V logic compatibility. It enables half-bridge motor control in industrial inverters.
For engineers reviewing the IRS21814STRPBF datasheet, IRS21814STRPBF pinout, IRS21814STRPBF application, or IRS21814STRPBF equivalent, key selection criteria include bootstrap-compatible high-side operation up to 600 V, undervoltage lockout on both channels, ±5 V logic/power ground offset tolerance, and dV/dt immunity up to 50 V/ns in PDIP packages.
Technical Context
The device integrates proprietary HVIC technology for monolithic high-voltage isolation between high-side and low-side channels. Its floating channel uses pulse-based level shifting with latch-immune CMOS design, enabling reliable operation at VS = –5 V to +600 V while maintaining logic state integrity.
Both channels feature independent UVLO thresholds (VCCUV+ = 8.0–9.8 V, VBSUV+ = 8.0–9.8 V) with hysteresis ≥0.3 V, and matched turn-on/off delays (MT ≤35 ns) critical for minimizing shoot-through in synchronous switching topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max. Floating Voltage | 600 V - supports high-side switching in 400 V AC line-fed inverters |
| Output Current | 1.4 A source / 1.8 A sink - drives 10 nF gate capacitance with <60 ns rise time |
| Propagation Delay | ton = 180–270 ns, toff = 220–330 ns - enables >200 kHz PWM in motor drives |
| Delay Matching | ≤35 ns - reduces dead-time uncertainty in half-bridge timing control |
| Logic Compatibility | 3.3 V and 5 V CMOS/LSTTL - interfaces directly with MCU GPIO without level shifters |
| UVLO Threshold | VCC/VBS = 8.2 V (typ), hysteresis = 0.7 V - prevents erratic switching during brown-out |
| dV/dt Immunity | 50 V/ns - suppresses false triggering from fast-switching noise in power stages |
Pinout & Package
IRS21814STRPBF is housed in a 14-lead SOIC package with exposed thermal pad (RoHS-compliant, Pb-free). Pin layout supports isolated high-side bootstrap supply routing and separate logic ground (VSS) for noise-sensitive control inputs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| HIN | High-side logic input | In-phase control signal referenced to VSS; accepts 3.3 V/5 V logic |
| LIN | Low-side logic input | In-phase control signal referenced to VSS; independent of HIN timing |
| VSS | Logic ground reference | Isolated digital ground pin-separate from COM to reduce coupling noise |
| COM | Power ground return | Common return for LO output and bootstrap capacitor discharge path |
| LO | Low-side gate drive output | Drives N-MOSFET gate with 1.8 A sink current; referenced to COM |
| VCC | Fixed supply input | 10–20 V supply for logic and low-side driver; powers UVLO circuitry |
| VB | High-side floating supply | Bootstrap input for high-side driver; must be decoupled with ≥0.1 µF ceramic |
| HO | High-side gate drive output | Drives N-MOSFET gate with 1.4 A source current; floats with VS node |
| VS | High-side floating return | Source connection of high-side switch; defines floating domain reference |
Key Features
| Feature | Design Value |
|---|---|
| Floating channel architecture | Enables high-side drive up to 600 V using external bootstrap diode/capacitor |
| Matched propagation delay | ≤35 ns difference between HO and LO channels minimizes timing skew in half-bridge |
| Independent UVLO per channel | Dual undervoltage lockout prevents partial drive during supply sag on VCC or VB |
| Logic/power ground separation | VSS and COM pins isolate digital noise from high-current switching return paths |
| Lower di/dt gate drive | Controlled slew rate improves EMI performance without external gate resistors |
Applications
| Motor Inverter Control | Induction Heating System |
|---|---|
Use Scenario: Driving N-channel IGBTs in 3-phase inverter legs for HVAC compressors. IC Role / Device Role / Timing Role: Dual-channel gate driver providing synchronized HO/LO signals with matched delay for precise dead-time control. Use Value: 600 V rating supports 400 V AC mains input; 1.4 A/1.8 A drive strength ensures <100 ns switching transitions. | Use Scenario: Half-bridge resonant driver in domestic induction cooktops operating at 20–50 kHz. IC Role / Device Role / Timing Role: High-side/low-side gate driver with dV/dt immunity preventing false triggering from transformer-coupled ringing. Use Value: 50 V/ns transient tolerance maintains reliability under high di/dt load transients typical in LC tank circuits. |
| Solar Microinverter | Industrial UPS |
Use Scenario: DC-AC conversion stage in single-phase microinverters interfacing PV panels to grid. IC Role / Device Role / Timing Role: Isolated gate driver enabling high-side switching in split-phase H-bridge topology. Use Value: VSS/COM separation reduces noise coupling into MPPT controller ADC references. | Use Scenario: Bidirectional DC-link switching in online double-conversion UPS systems. IC Role / Device Role / Timing Role: Robust gate driver supporting fast commutation between rectifier and inverter modes. Use Value: Matched ton/toff and low propagation delay variation (<±15 ns over temperature) ensure consistent zero-voltage switching timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side/low-side gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IRS21844STRPBF | Integrated dead-time generator (400–5000 ns programmable); no VSS pin; shares COM for logic and power ground | Reduces external timing components in synchronous rectification but increases ground noise coupling risk | Select when fixed dead-time insertion simplifies PCB layout and noise sensitivity is low |
| UCC27211D | 600 V high-side rating; 4 A peak drive; no integrated UVLO on VB; requires external bootstrap management | Better drive strength for large gate charges but lacks dual-channel UVLO safety margin | Select when higher current drive is required and system-level UVLO monitoring is implemented externally |
Compared with IRS21814STRPBF, IRS21844STRPBF trades logic ground isolation for programmable dead-time, while UCC27211D offers higher current at the cost of reduced integrated protection-making IRS21814STRPBF optimal for noise-critical industrial inverters requiring robust dual UVLO and ground separation.
Availability
IRS21814STRPBF is available at Aetrix Electronics and suitable for motor inverter control, induction heating systems, solar microinverters, and industrial UPS requiring stable component supply across extended production lifecycles.
Supply support for IRS21814STRPBF 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 global manufacturing and quality certification to ISO 9001 and IATF 16949.
The IRS218xx family targets high-reliability half-bridge gate driving in industrial motor drives and renewable energy converters, emphasizing rugged HVIC integration, noise immunity, and bootstrap flexibility.
FAQ
What is the purpose of the VSS pin on IRS21814STRPBF?
VSS is the dedicated logic ground reference pin, electrically isolated from the power ground (COM). This separation prevents switching noise from the high-current LO/COM path from corrupting logic-level HIN/LIN signals, improving noise immunity in mixed-signal environments such as motor control MCUs with sensitive analog peripherals.
Can IRS21814STRPBF drive SiC MOSFETs?
Yes, IRS21814STRPBF can drive SiC MOSFETs provided gate resistor values are selected to limit dI/dt and avoid overshoot, and the 1.4 A/1.8 A drive strength matches the target device's Qg. Its 600 V rating and 50 V/ns dV/dt immunity suit medium-power SiC half-bridges, though gate drive voltage must remain within the 10–20 V VCC range and not exceed the SiC device's absolute max VGS.
How does the bootstrap configuration work with IRS21814STRPBF?
The bootstrap circuit uses an external diode and capacitor between VCC and VB. When LO is active, COM is pulled low, charging the capacitor via the diode. When HO must turn on, the capacitor supplies gate drive voltage relative to VS, allowing the high-side driver to operate above the switching node potential-enabling N-MOSFET high-side use without isolated supplies.
Is IRS21814STRPBF pin-compatible with IRS2181STRPBF?
No. IRS21814STRPBF is a 14-lead SOIC with separate VSS and COM pins, whereas IRS2181STRPBF is an 8-lead SOIC/PDIP with shared COM for logic and power ground. The pin count, layout, and grounding scheme differ fundamentally-requiring PCB redesign and layout review for substitution.
IRS21814STRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Driven Configuration:
- Half-Bridge
- Channel Type:
- Independent
- 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):
- 1.9A, 2.3A
- Input Type:
- Non-Inverting
- High Side Voltage - Max (Bootstrap):
- 600 V
- Rise / Fall Time (Typ):
- 40ns, 20ns
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
IRS21814STRPBF FAQ
1.How can I place an order for IRS21814STRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for IRS21814STRPBF 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 IRS21814STRPBF reliable?
The price and inventory of IRS21814STRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRS21814STRPBF is usually 5 days.
3.What payment methods are accepted for IRS21814STRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRS21814STRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IRS21814STRPBF?
IRS21814STRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IRS21814STRPBF 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 IRS21814STRPBF?
For technical support, including IRS21814STRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRS21814STRPBF requirements.
6.How does Aetrix verify that IRS21814STRPBF is sourced from the original manufacturer or authorized distributors?
All IRS21814STRPBF 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 IRS21814STRPBF meets industry standards.
7.What is the process for return or replacement of IRS21814STRPBF?
All IRS21814STRPBF units undergo pre-shipment inspection (PSI). If there is an issue with IRS21814STRPBF, 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 IRS21814STRPBF part is unused and in its original packaging.
Return procedure for IRS21814STRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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