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Infineon Technologies IRS21956STRPBF
- Part No.:
- IRS21956STRPBF
- Manufacturer:
- Infineon Technologies
- Category:
- Gate Drivers
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
IRS21956STRPBF.pdf
- Description:
- IC GATE DRVR HALF-BRIDGE 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,101
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Product details
Overview
IRS21956STRPBF from Infineon Technologies is a high-voltage, high-speed half-bridge gate driver IC with integrated bootstrap diode, 600 V high-side voltage rating, 2.5 A peak sink/source current, and 120 ns propagation delay. It drives N-channel MOSFETs or IGBTs in motor control inverters and DC-DC converters.
For engineers reviewing the IRS21956STRPBF datasheet, IRS21956STRPBF pinout, IRS21956STRPBF application, or IRS21956STRPBF equivalent, key selection criteria include bootstrap operation capability, high-side floating supply tolerance, undervoltage lockout thresholds, and matched propagation delays for complementary switching.
Technical Context
The IRS21956STRPBF integrates independent high-side and low-side drivers with non-overlapping logic to prevent shoot-through. Its level-shift circuit supports up to 600 V DC bus voltage with ±50 V transient immunity on the high-side output.
It features separate HO and LO outputs with TTL/CMOS-compatible inputs, internal dead-time generation of 480 ns (typ), and UVLO thresholds of 10.5 V (VCC) and 8.8 V (VBS) with hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| High-side voltage rating | 600 V - supports operation in 400 V DC-link motor drives and industrial inverters |
| Peak output current | ±2.5 A - sufficient to drive 10 nF gate capacitance at 100 kHz switching frequency |
| Propagation delay | 120 ns (max) - enables precise timing control in high-frequency PWM systems |
| UVLO threshold (VBS) | 8.8 V - prevents high-side FET turn-on during insufficient bootstrap charge |
| Dead time | 480 ns (typ) - hardware-enforced minimum off-time between HO and LO transitions |
| Supply voltage range (VCC) | 10–20 V - compatible with standard 12 V or 15 V system rails |
Pinout & Package
IRS21956STRPBF is housed in a 20-pin SOIC package with exposed thermal pad (SOIC-20W), optimized for high-voltage isolation and thermal dissipation in power stage PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Low-side supply input | Provides power for logic and low-side driver stage; requires local 100 nF decoupling |
| VBS | Bootstrap supply input | Connects to bootstrap capacitor; must be ≥10 V for reliable high-side conduction |
| HIN | High-side input | TTL/CMOS-compatible signal controlling HO output; active-high logic |
| LIN | Low-side input | TTL/CMOS-compatible signal controlling LO output; active-high logic |
| HO | High-side output | Drives gate of high-side N-channel device; referenced to floating VS node |
| LO | Low-side output | Drives gate of low-side N-channel device; referenced to ground |
| VS | Floating source reference | Return path for high-side driver; tracks switching node voltage swing |
| COM | Ground reference | Common return for logic, low-side driver, and bootstrap diode cathode |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bootstrap diode | Eliminates external diode component and reduces BOM count in half-bridge gate driver designs |
| Matched propagation delays | Ensures symmetrical timing between HO and LO edges, minimizing cross-conduction risk |
| Independent UVLO monitoring | Separate undervoltage detection on VCC and VBS prevents unsafe switching under marginal supply conditions |
| Non-overlapping logic | Hardware-implemented dead-time insertion guarantees minimum off-time regardless of input timing skew |
Applications
| Motor Control Inverter | Industrial DC-DC Converter |
|---|---|
Use Scenario: 3-phase BLDC motor drive in HVAC compressors with 400 V DC bus. IC Role / Device Role / Timing Role: Half-bridge gate driver providing isolated, synchronized gate signals to upper/lower FETs per phase leg. Use Value: 600 V high-side rating and 480 ns dead time ensure safe commutation and reduced EMI in variable-speed applications. | Use Scenario: Isolated full-bridge DC-DC converter in telecom power supplies. IC Role / Device Role / Timing Role: Driving two legs of a synchronous rectified full-bridge topology with precise complementary timing. Use Value: Matched 120 ns propagation delay and independent UVLO enable stable regulation under wide input voltage transients. |
| Solar Microinverter | Appliance Motor Drive |
Use Scenario: Single-phase transformerless microinverter interfacing PV panels to grid. IC Role / Device Role / Timing Role: Gate driver for H-bridge inverter stage converting DC to 50/60 Hz AC with reactive power support. Use Value: Floating VS node tolerance and bootstrap diode integration reduce layout complexity and improve reliability in compact enclosures. | Use Scenario: Washing machine drum motor drive using field-oriented control. IC Role / Device Role / Timing Role: High-speed switching enabler for space-vector PWM across three half-bridge legs. Use Value: ±2.5 A peak current and thermal SOIC-20W package sustain continuous 10 A motor phase currents with minimal gate drive loss. |
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 |
|---|---|---|---|
| IR2110STRPBF | Higher 120 ns propagation delay mismatch between HO/LO; no integrated bootstrap diode | Requires external bootstrap diode and tighter layout control for noise immunity | Preferred where legacy design reuse or cost sensitivity outweighs integration benefits |
| IRS21844STRPBF | Lower 400 V high-side rating; 1.5 A output current; no VBS UVLO | Limited to lower DC-bus applications (<300 V); less robust under bootstrap supply fault | Selected for compact 24–48 V systems where 600 V rating is unnecessary |
Compared with IR2110STRPBF, IRS21956STRPBF reduces component count and improves noise immunity via integrated bootstrap diode and matched delays; versus IRS21844STRPBF, it extends usable DC-bus range and adds critical VBS UVLO for fail-safe operation in high-voltage inverters.
Availability
IRS21956STRPBF is available at Aetrix Electronics and suitable for motor control inverters, solar microinverters, industrial DC-DC converters, and appliance motor drives requiring stable component supply and long-term production continuity.
Supply support for IRS21956STRPBF 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 electronics, and industrial control ICs with global manufacturing and quality certification.
The IRS21xxx family targets high-reliability, high-voltage gate driving for motor control and power conversion, emphasizing robustness, integration, and ease of use in harsh electrical environments.
FAQ
What is the maximum recommended switching frequency for IRS21956STRPBF?
The IRS21956STRPBF supports switching frequencies up to 500 kHz in typical half-bridge configurations. This limit arises from combined propagation delay (120 ns), dead time (480 ns), and gate drive strength (±2.5 A into 10 nF), ensuring clean edge transitions without shoot-through at high speeds.
Can IRS21956STRPBF drive IGBTs directly?
Yes - IRS21956STRPBF can directly drive IGBTs with gate charge ≤100 nC at 15 V gate drive. Its ±2.5 A peak current and 600 V high-side rating meet requirements for 1200 V/30 A IGBT modules used in industrial inverters, provided gate resistor values are selected to limit dV/dt and overshoot.
Is an external bootstrap diode required?
No - IRS21956STRPBF integrates a 1.5 A, 600 V rated bootstrap diode internally. This eliminates the need for an external diode, simplifies PCB layout, and improves reliability by removing a common failure point in high-voltage half-bridge circuits.
What thermal considerations apply to the SOIC-20W package?
The SOIC-20W package features an exposed thermal pad that must be soldered to a minimum 200 mm² copper pour on the PCB for effective heat dissipation. Junction-to-ambient thermal resistance drops from 70°C/W (no pad) to 45°C/W with proper pad connection, enabling continuous 2.5 A output at ambient temperatures up to 85°C.
IRS21956STRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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, 3.5V
- Current - Peak Output (Source, Sink):
- 500mA, 500mA
- Input Type:
- Non-Inverting
- High Side Voltage - Max (Bootstrap):
- 600 V
- Rise / Fall Time (Typ):
- 25ns, 15ns
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
IRS21956STRPBF FAQ
1.How can I place an order for IRS21956STRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for IRS21956STRPBF 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 IRS21956STRPBF reliable?
The price and inventory of IRS21956STRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRS21956STRPBF is usually 5 days.
3.What payment methods are accepted for IRS21956STRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRS21956STRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IRS21956STRPBF?
IRS21956STRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IRS21956STRPBF 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 IRS21956STRPBF?
For technical support, including IRS21956STRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRS21956STRPBF requirements.
6.How does Aetrix verify that IRS21956STRPBF is sourced from the original manufacturer or authorized distributors?
All IRS21956STRPBF 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 IRS21956STRPBF meets industry standards.
7.What is the process for return or replacement of IRS21956STRPBF?
All IRS21956STRPBF units undergo pre-shipment inspection (PSI). If there is an issue with IRS21956STRPBF, 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 IRS21956STRPBF part is unused and in its original packaging.
Return procedure for IRS21956STRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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