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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Gate Drivers

Infineon Technologies IR21074S

Name: IR21074S
Brand: Infineon Technologies
SKU: IR21074S
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IR21074S

Manufacturer:: Infineon Technologies

Category:: Gate Drivers

Package:: 14-SOIC (0.154", 3.90mm Width)

Datasheet:: IR21074S.pdf

Description:: IC GATE DRVR HALF-BRIDGE 14SOIC

Quantity:: RFQ Add To RFQ list

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Inventory:4,323

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Product details

Overview

IR21074S from Infineon Technologies is a high-voltage, high-speed MOSFET and IGBT gate driver IC for half-bridge configurations. It integrates bootstrap-based high-side driving, undervoltage lockout (UVLO) on both channels, and matched propagation delays (typ. 220 ns). Designed for motor control inverters and SMPS, it drives N-channel power devices in 600 V systems with 100 V/ns common-mode dv/dt immunity.

For engineers reviewing the IR21074S datasheet, IR21074S pinout, IR21074S application, or IR21074S equivalent, key selection criteria include its 600 V high-side floating supply capability, independent input logic (IN+ and IN−), thermal shutdown protection, and SOIC-14 package compatibility with industrial motor drive PCB layouts.

Technical Context

The IR21074S employs a level-shifted high-side driver architecture with internal diode-clamped bootstrap circuitry, enabling operation without external high-voltage level-shifting components. Its dual-channel output supports complementary PWM inputs with built-in dead-time insertion logic to prevent shoot-through.

It features separate UVLO thresholds: 10.1 V (rising) / 8.8 V (falling) for the low-side and 9.2 V (rising) / 7.8 V (falling) for the high-side, ensuring robust turn-on/turn-off sequencing under varying supply conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
Max Output Voltage	600 V - Enables direct driving of high-voltage N-channel MOSFETs/IGBTs in half-bridge topologies up to 600 V bus rails.
Propagation Delay	220 ns (typ.) - Ensures precise timing alignment between high- and low-side outputs for accurate PWM edge control.
dv/dt Immunity	100 V/ns - Maintains reliable high-side operation during fast switching transients in noisy inverter environments.
Output Current	±2.5 A peak - Sufficient to charge/discharge gate capacitance of medium-power MOSFETs (e.g., 10–50 nC Qg) at >20 kHz switching frequencies.
UVLO Thresholds	HS: 9.2 V↑ / 7.8 V↓; LS: 10.1 V↑ / 8.8 V↓ - Prevents partial turn-on during brown-out and ensures coordinated channel enable/disable sequencing.
Operating Temp	−40°C to +125°C - Supports deployment in industrial motor drives and outdoor-rated power converters without derating.

Pinout & Package

IR21074S is housed in a 14-pin SOIC package with wide-body (SOIC-14WB) footprint and creepage-enhanced isolation. The package supports surface-mount assembly and meets IPC-7351B standard land patterns.

Pin/Terminal	Circuit Role	Design Meaning
VCC	Low-side supply input	Provides power for logic and low-side driver stage; requires 10–20 V regulated supply.
COM	Low-side return path	Common reference for low-side output and logic ground; must be connected directly to power ground plane.
HO	High-side output	Drives gate of high-side N-channel device; floats with VS node and requires bootstrap capacitor coupling.
VS	High-side source reference	Connects to switching node between high- and low-side devices; serves as return for HO output stage.
LO	Low-side output	Directly drives gate of low-side N-channel device; referenced to COM.
VDD	Logic supply input	Separate 3.3 V or 5 V supply for input logic interface; decoupled from VCC for noise immunity.
IN+	Non-inverting input	Accepts PWM or logic-level signal to enable high-side output when IN− is low.
IN−	Inverting input	Complementary input; enables low-side output when IN+ is low, supporting differential input control.

Key Features

Feature	Design Value
Dual independent inputs (IN+, IN−)	Enables flexible control modes-complementary, single-ended, or enable-gated-without external logic gates.
Bootstrap-compatible high-side driver	Eliminates need for isolated supplies or pulse transformers in half-bridge applications up to 600 V.
Matched propagation delay	220 ns ±10 ns matching ensures <20 ns skew between HO and LO edges, critical for minimizing dead-time uncertainty.
Integrated UVLO with hysteresis	Prevents erratic switching during power-up/down by disabling outputs until both VCC and bootstrap voltage exceed thresholds.
100 V/ns common-mode dv/dt immunity	Maintains correct high-side output state even during rapid phase-leg voltage transitions in motor drive inverters.

Applications

Industrial Motor Drives

Brushless DC (BLDC) Inverters

Use Scenario: Three-phase inverter stage in HVAC compressor drives operating at 400 V DC bus and 15 kHz PWM frequency.

IC Role / Device Role / Timing Role: Gate driver for six N-channel MOSFETs in three half-bridges, providing synchronized, shoot-through-protected switching.

Use Value: Matched propagation delay and integrated UVLO ensure consistent phase timing and fault-free startup under variable line voltage conditions.

Use Scenario: Rotor position-sensored BLDC drive in e-bike controller with 36 V battery input and 10–12 A phase current.

IC Role / Device Role / Timing Role: Half-bridge driver per phase, accepting Hall sensor-triggered PWM signals to commutate motor windings.

Use Value: Independent IN+/IN− inputs allow direct interface with microcontroller GPIOs without external inverters or AND logic.

Switch-Mode Power Supplies

Induction Heating Systems

Use Scenario: LLC resonant converter primary-side half-bridge using 600 V GaN FETs with 300 kHz switching frequency.

IC Role / Device Role / Timing Role: High-speed gate driver delivering precise edge timing and strong gate drive to minimize switching losses in GaN devices.

Use Value: 100 V/ns dv/dt immunity prevents false triggering during high-frequency resonant node oscillations.

Use Scenario: 20 kW induction heating inverter with parallel IGBT modules and 20–40 kHz operating frequency.

IC Role / Device Role / Timing Role: Driver for each IGBT half-bridge leg, handling high-current gate charge and thermal stress in continuous duty cycles.

Use Value: −40°C to +125°C operating range and robust UVLO ensure stable operation in enclosed, air-cooled cabinet environments.

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
IR21064S	Lacks independent IN+/IN− inputs; uses single IN with internal inverter for LO; no VDD logic supply pin.	Suitable only for simple complementary PWM where microcontroller provides inverted signal; less flexible for enable-gated or fault-handling schemes.	Select IR21064S only if board space is constrained and control logic already generates complementary signals.
IRS21844SPbF	Higher peak output current (±2.6 A); includes built-in bootstrap diode; same SOIC-14 package but different pinout (e.g., VSS instead of COM).	Requires PCB layout revision due to pin reassignment; better suited for high-Qg MOSFETs requiring faster gate charging.	Choose IRS21844SPbF when upgrading gate drive strength without changing topology, but verify layout compatibility first.

Compared with IR21064S, the IR21074S offers greater control flexibility via dual inputs and dedicated logic supply; versus IRS21844SPbF, it trades minor current gain for pinout compatibility and simpler bootstrap implementation in legacy designs.

Availability

IR21074S is available at Aetrix Electronics and suitable for industrial motor drives, brushless DC inverters, switch-mode power supplies, and induction heating systems requiring stable component supply across multi-year production cycles.

Supply support for IR21074S 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 to ISO/TS 16949 and IECQ QC 080000.

The IR210xx family targets high-reliability, high-voltage gate driving in energy-efficient power conversion systems, emphasizing robustness, timing precision, and ease of integration in cost-sensitive industrial designs.

FAQ

What is the minimum bootstrap capacitor value required for reliable IR21074S operation at 100 kHz?

A 100 nF ceramic capacitor with X7R dielectric and ≤100 mΩ ESR is recommended for 100 kHz operation with 2 A peak gate current. This ensures sufficient charge replenishment during high-duty-cycle conditions while maintaining <1 V ripple on the VB node. Larger values (e.g., 220 nF) improve margin under temperature extremes but increase PCB area and cost.

Can IR21074S drive SiC MOSFETs directly?

Yes, IR21074S can drive discrete SiC MOSFETs with gate threshold voltages ≥2.5 V and total gate charge ≤45 nC, provided gate resistor values are selected to limit dV/dt to <50 V/ns and maintain safe SOA during turn-on. Its 600 V rating and 100 V/ns dv/dt immunity make it compatible with 650 V SiC devices in hard-switched topologies.

Does IR21074S include internal shoot-through protection?

No, IR21074S does not integrate hardware shoot-through prevention logic. It relies on externally generated complementary PWM signals with dead time inserted by the controller. However, its matched propagation delay (220 ns) and independent IN+/IN− inputs simplify dead-time implementation and reduce timing uncertainty that could lead to overlap.

Is a separate logic supply (VDD) mandatory for IR21074S operation?

Yes, VDD must be supplied with a clean 3.3 V or 5 V source independent of VCC. This powers the input comparators and logic circuitry, isolating noise-sensitive control signals from the higher-noise power supply rail. Omitting VDD or tying it to VCC causes undefined input behavior and potential latch-up under transient conditions.

IR21074S Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: 14-SOIC (0.154", 3.90mm Width)

Packaging:: Tube

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, 2.7V

Current - Peak Output (Source, Sink):: 200mA, 350mA

Input Type:: Inverting

High Side Voltage - Max (Bootstrap):: 600 V

Rise / Fall Time (Typ):: 150ns, 50ns

Operating Temperature:: -40°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-SOIC

IR21074S FAQ

1.How can I place an order for IR21074S through Aetrix?

Please submit a Request for Quotation (RFQ) for IR21074S 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 IR21074S reliable?

The price and inventory of IR21074S are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IR21074S is usually 5 days.

3.What payment methods are accepted for IR21074S?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IR21074S transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IR21074S?

IR21074S orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IR21074S 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 IR21074S?

For technical support, including IR21074S datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IR21074S requirements.

6.How does Aetrix verify that IR21074S is sourced from the original manufacturer or authorized distributors?

All IR21074S 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 IR21074S meets industry standards.

7.What is the process for return or replacement of IR21074S?

All IR21074S units undergo pre-shipment inspection (PSI). If there is an issue with IR21074S, 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 IR21074S part is unused and in its original packaging.

Return procedure for IR21074S:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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