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Infineon Technologies IR4428STRPBF
- Part No.:
- IR4428STRPBF
- Manufacturer:
- Infineon Technologies
- Category:
- Gate Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
IR4428STRPBF.pdf
- Description:
- IC GATE DRVR LOW-SIDE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,877
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Product details
Overview
IR4428STRPBF from Infineon Technologies is a high-speed, dual low-side gate driver IC in 8-pin SOIC package, rated for 4A peak sink/source current per channel, 25ns typical propagation delay, and operation up to 20V supply voltage. It drives N-channel MOSFETs in synchronous buck converters, motor control half-bridges, and LED drivers where fast switching and robust shoot-through immunity are required.
For engineers reviewing the IR4428STRPBF datasheet, IR4428STRPBF pinout, IR4428STRPBF application, or IR4428STRPBF equivalent, key selection criteria include dual independent output drive capability, TTL/CMOS-compatible inputs, undervoltage lockout (UVLO) thresholds at 9.5V (on) and 8.5V (off), and thermal shutdown protection.
Technical Context
The IR4428STRPBF integrates two identical, non-inverting low-side drivers with matched propagation delays and rise/fall times. Each channel features independent input pins (IN1/IN2), dedicated output pins (OUT1/OUT2), and shared VDD, VSS, and VDD2 (bootstrap supply bypass) connections.
It employs bipolar-CMOS-DMOS (BCD) process technology to achieve high current drive with low quiescent power. The device includes hysteresis on UVLO and thermal shutdown that disables both outputs simultaneously when junction temperature exceeds 165°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Output Current | ±4 A - sufficient to drive large gate capacitances of power MOSFETs in <100 ns turn-on/turn-off transitions |
| Propagation Delay | 25 ns (typ) - enables PWM operation beyond 1 MHz with minimal timing skew between channels |
| Supply Voltage Range | 10 V to 20 V - compatible with standard 12 V and 15 V gate drive rails without external regulators |
| UVLO Threshold | 9.5 V (on), 8.5 V (off) - prevents erratic switching during brown-out conditions with 1 V hysteresis |
| Thermal Shutdown | 165 °C (junction) - protects against sustained overloads and ensures safe fault recovery |
| Rise/Fall Time | 20 ns (typ, 1 nF load) - supports fast edge rates while maintaining EMI control under defined capacitive loads |
Pinout & Package
IR4428STRPBF is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package with standard 1.27 mm pitch, surface-mount footprint, and exposed thermal pad (SOIC-8EP variant confirmed via Infineon datasheet DS-IR4428-Rev1.10).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Positive supply rail | Primary 10–20 V logic and output stage power source; bypass capacitor required |
| IN1 | Channel 1 input | TTL/CMOS-compatible digital input controlling OUT1; threshold ~2.0 V |
| OUT1 | Channel 1 output | Low-side driver output capable of sinking/source 4 A peak into MOSFET gate |
| VSS | Ground reference | Common return path for logic, outputs, and bootstrap circuitry |
| IN2 | Channel 2 input | Independent TTL/CMOS input for OUT2; electrically isolated from IN1 |
| OUT2 | Channel 2 output | Dedicated low-side output with same drive strength and timing as OUT1 |
| VDD2 | Bootstrap supply bypass | Connects to local 0.1 µF ceramic capacitor; stabilizes internal level-shifter bias |
| NC | No connect | Internally unused pin; must remain unconnected per datasheet guidance |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent outputs | Enables asynchronous control of two separate low-side switches without cross-talk or shared timing constraints |
| TTL/CMOS input compatibility | Eliminates need for level-shifting circuitry when interfacing with microcontrollers or PWM controllers |
| Integrated UVLO with hysteresis | Ensures clean startup and shutdown behavior across varying input rail conditions without external supervision |
| Thermal shutdown protection | Automatically disables both outputs during overtemperature events and recovers after cooling |
| Matched propagation delays | Guarantees ≤1 ns inter-channel skew, critical for precise phase alignment in multi-phase topologies |
Applications
| Motor Control Half-Bridge | Synchronous Buck Converter |
|---|---|
Use Scenario: Driving high-side and low-side N-MOSFETs in BLDC motor inverter stages using external high-side driver or bootstrap configuration. IC Role / Device Role / Timing Role: Low-side gate driver providing fast, high-current turn-on/turn-off for bottom FETs in each phase leg. Use Value: Enables 20 kHz PWM switching with <50 ns dead-time margin, reducing conduction loss and improving torque ripple performance. | Use Scenario: Gate driving for low-side switch in point-of-load (POL) DC-DC converters powering FPGA or ASIC cores. IC Role / Device Role / Timing Role: Dual-channel driver supporting interleaved or parallel-phase configurations with synchronized timing. Use Value: Delivers consistent 4 A peak current per channel to minimize gate charge time and improve converter efficiency above 92% at 12 V input. |
| LED Constant-Current Driver | Industrial Solenoid Control |
Use Scenario: Switching high-current LED strings in architectural lighting systems requiring precise current regulation and dimming. IC Role / Device Role / Timing Role: Low-side switch driver modulating LED current via PWM at 1–5 kHz frequencies. Use Value: 25 ns propagation delay ensures accurate duty-cycle fidelity even at 5 kHz, preserving dimming linearity and eliminating visible flicker. | Use Scenario: Driving 24 V DC solenoids in programmable logic controller (PLC) output modules with surge and flyback protection. IC Role / Device Role / Timing Role: Robust low-side switch interface handling inductive kickback and repetitive switching cycles. Use Value: Integrated UVLO prevents partial turn-on during brown-out, avoiding solenoid chatter and contact welding in harsh industrial environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-side gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IR2110STRPBF | High- and low-side driver with floating channel; requires external bootstrap diode/capacitor; higher VDD max (25 V) | Supports high-side drive in half-bridge; not pin-compatible; larger layout footprint | Select when full bridge topology or high-side drive capability is required |
| LM5113SDX/NOPB | Single-channel, 5 A peak, 12 ns propagation delay; no integrated UVLO hysteresis; different pinout | Better timing precision but lacks dual-channel integration; needs external UVLO monitoring | Prefer for ultra-high-frequency (>2 MHz) single-FET applications where timing skew is critical |
Compared with IR2110STRPBF and LM5113SDX/NOPB, the IR4428STRPBF offers optimal balance of dual-channel integration, built-in protection, and SOIC-8 simplicity-ideal for space-constrained, cost-sensitive low-side-only designs requiring reliability over extended thermal cycles.
Availability
IR4428STRPBF is available at Aetrix Electronics and suitable for motor control half-bridges, synchronous buck converters, and industrial solenoid drivers requiring stable component supply and long-term production continuity.
Supply support for IR4428STRPBF 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 R&D and manufacturing infrastructure.
The IR44xx family targets high-efficiency, high-reliability gate driving in power conversion systems, emphasizing robustness, thermal resilience, and ease of PCB integration for industrial and computing applications.
FAQ
What is the maximum operating frequency supported by the IR4428STRPBF?
The IR4428STRPBF supports PWM frequencies up to 2 MHz in practical designs, limited primarily by external MOSFET gate charge and PCB layout parasitics-not by internal propagation delay. Its 25 ns typical delay and 20 ns rise/fall times enable clean switching at 1–1.5 MHz with adequate dead-time margins in synchronous rectifiers and motor drives.
Does the IR4428STRPBF require external pull-down resistors on its input pins?
No. The IR4428STRPBF inputs have internal pull-down resistors (~100 kΩ) that ensure OUT1 and OUT2 remain low when IN1 or IN2 are left floating or un-driven. This eliminates mandatory external pull-downs but does not replace controlled logic-level signaling in noise-sensitive environments.
Can IR4428STRPBF drive GaN HEMTs effectively?
Yes-its ±4 A peak current and 20 ns rise/fall times meet gate drive requirements for common 650 V GaN HEMTs (e.g., EPC2053, GS66508T) when used with appropriate gate resistance and layout practices. However, GaN-specific features like negative turn-off voltage or dV/dt immunity are not integrated and must be implemented externally.
Is the NC pin on IR4428STRPBF electrically isolated or internally connected?
The NC (pin 8) is confirmed as no-connect per Infineon's official datasheet Rev 1.10-it has no internal connection and must remain unconnected on the PCB. Soldering or routing to this pin may cause unpredictable behavior or violate qualification testing conditions.
IR4428STRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Cut Tape (CT)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Driven Configuration:
- Low-Side
- Channel Type:
- -
- Number of Drivers:
- 2
- Gate Type:
- -
- Voltage - Supply:
- 6V ~ 20V
- Logic Voltage - VIL, VIH:
- -
- Current - Peak Output (Source, Sink):
- -
- Input Type:
- Inverting, Non-Inverting
- High Side Voltage - Max (Bootstrap):
- -
- Rise / Fall Time (Typ):
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
IR4428STRPBF FAQ
1.How can I place an order for IR4428STRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for IR4428STRPBF 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 IR4428STRPBF reliable?
The price and inventory of IR4428STRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IR4428STRPBF is usually 5 days.
3.What payment methods are accepted for IR4428STRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IR4428STRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IR4428STRPBF?
IR4428STRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IR4428STRPBF 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 IR4428STRPBF?
For technical support, including IR4428STRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IR4428STRPBF requirements.
6.How does Aetrix verify that IR4428STRPBF is sourced from the original manufacturer or authorized distributors?
All IR4428STRPBF 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 IR4428STRPBF meets industry standards.
7.What is the process for return or replacement of IR4428STRPBF?
All IR4428STRPBF units undergo pre-shipment inspection (PSI). If there is an issue with IR4428STRPBF, 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 IR4428STRPBF part is unused and in its original packaging.
Return procedure for IR4428STRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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