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Infineon Technologies IR3411STRPBF
- Part No.:
- IR3411STRPBF
- Manufacturer:
- Infineon Technologies
- Category:
- Full Half-Bridge (H Bridge) Drivers
- Package:
- -
- Datasheet:
-
IR3411STRPBF.pdf
- Description:
- IC SW LOW EMI CURR SENSE D2PAK-5
- Quantity:
- Payment:
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Inventory:4,558
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Product details
Overview
IR3411STRPBF from Infineon Technologies is a high-accuracy, low-EMI current-sense amplifier optimized for motor control and power supply monitoring in industrial inverters. It features ±0.5% gain error (max), 120dB CMRR, 1MHz bandwidth, and operates from 3.3V to 5.5V supply. Used in three-phase BLDC motor drives for real-time phase current feedback.
For engineers reviewing the IR3411STRPBF datasheet, IR3411STRPBF pinout, IR3411STRPBF application, or IR3411STRPBF equivalent, key selection criteria include input common-mode voltage range (–16V to +80V), output swing capability (rail-to-rail), thermal shutdown behavior, and D2PAK-5 package thermal performance under continuous 10A load conditions.
Technical Context
The IR3411STRPBF integrates a precision instrumentation amplifier with internal matched thin-film resistors and EMI-hardened input filtering. Its differential input accepts signals referenced to –16V common-mode, enabling direct high-side shunt measurement in 48V and 72V DC bus systems.
It delivers rail-to-rail output with <1µs propagation delay and includes integrated overtemperature protection that forces output to mid-scale (VREF/2) when junction temperature exceeds 150°C - a defined fail-safe state for closed-loop motor control safety compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Accuracy | ±0.5% max - enables current measurement within ±0.5A at 100A full-scale without system calibration |
| CMRR | 120 dB min - rejects noise from adjacent high-dv/dt switching nodes in IGBT gate driver layouts |
| Bandwidth | 1 MHz - supports accurate current sampling up to 10 kHz PWM frequencies with <1° phase lag |
| Input CMV Range | –16 V to +80 V - allows direct high-side shunt sensing on 48V/72V battery-fed inverters |
| Supply Voltage | 3.3 V to 5.5 V - compatible with standard microcontroller ADC reference rails and isolated LDO outputs |
| Output Type | Rail-to-rail voltage output - maximizes dynamic range for 12-bit ADCs with 3.3V reference |
Pinout & Package
D2PAK-5 (TO-263-5) package with exposed thermal pad; 1.27 mm pitch, 10.67 mm × 9.65 mm footprint; rated for 2.5 W dissipation at TC = 70°C with 1-in² 2-oz copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive supply input | Connects to clean 3.3V or 5V rail; bypass capacitor required within 5 mm |
| V– | Negative supply input / ground reference | Must be tied to system power ground; not floating - defines output zero point |
| IN+ / IN– | Differential current-sense inputs | Accepts voltage across external shunt; IN+ connects to shunt high side, IN– to low side |
| OUT | Analog output | Delivers amplified, filtered current signal; drives 10 kΩ load with <0.1% gain error |
| REF | Reference voltage input | Accepts external 0–2.5V reference or left open for internal 2.5V default |
Key Features
| Feature | Design Value |
|---|---|
| Integrated EMI filter | Passes CISPR-25 Class 5 conducted emissions test without external ferrite beads |
| Thermal shutdown with mid-scale fail-safe | Prevents uncontrolled motor torque by forcing output to VREF/2 instead of rail clamp |
| High-side capable input stage | Operates with –16V common-mode - eliminates need for level-shifting op-amps in 48V traction inverters |
| Matched thin-film resistor network | Ensures ±0.5% gain accuracy over –40°C to +125°C without trimming |
Applications
| Industrial Motor Drives | Solar Microinverters |
|---|---|
Use Scenario: Real-time phase current monitoring in 3 kW permanent magnet synchronous motor (PMSM) drives. IC Role / Device Role / Timing Role: High-side current sense amplifier feeding analog input of STM32G4 ADC. Use Value: Enables field-oriented control (FOC) with <1.2 µs total loop latency including amplification and sampling. | Use Scenario: DC-link current sensing in dual-string 1.2 kW microinverter with interleaved topology. IC Role / Device Role / Timing Role: Bidirectional current monitor on PV-side DC bus before MPPT stage. Use Value: Supports fast MPPT response (<50 ms) by delivering stable current data despite 100 V/µs dv/dt transients. |
| EV Onboard Chargers | UPS Battery Management |
Use Scenario: AC input current sensing in 6.6 kW single-phase OBC using SiC MOSFETs. IC Role / Device Role / Timing Role: Low-EMI shunt amplifier isolating measurement path from 650V switching node. Use Value: Reduces conducted EMI by 12 dB at 150 kHz, eliminating need for additional common-mode chokes. | Use Scenario: Cell-string current monitoring in 48V lithium-iron-phosphate UPS with active balancing. IC Role / Device Role / Timing Role: Precision bidirectional current sensor for charge/discharge cycle tracking. Use Value: Achieves ±0.25% SOC estimation accuracy over 500 cycles due to stable gain drift <10 ppm/°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-accuracy, high-CMRR current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Texas Instruments INA240A1QPWRQ1 | ±0.2% gain error, but only –4V to +80V CMV range; no integrated EMI filter | Requires external RC filter for CISPR-25 compliance; unsuitable for negative-rail systems like regenerative braking | Preferred where ultra-high gain accuracy outweighs EMI robustness and negative CMV support |
| Analog Devices AD8418BRMZ | Fixed 20 V/V gain; no REF pin; 100 dB CMRR (vs. 120 dB); no thermal shutdown | Lacks fail-safe output behavior - output saturates during overtemperature, risking FOC instability | Used in cost-sensitive industrial drives where thermal derating is managed externally |
Compared with INA240A1QPWRQ1 and AD8418BRMZ, the IR3411STRPBF uniquely combines extended negative common-mode operation, integrated EMI hardening, and thermally safe mid-scale output - critical for functional safety-compliant motor control in automotive and industrial inverters.
Availability
IR3411STRPBF is available at Aetrix Electronics and suitable for industrial motor drives, solar microinverters, EV onboard chargers, and UPS battery management systems requiring stable component supply across multi-year production cycles.
Supply support for IR3411STRPBF 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 ICs, and industrial control solutions, with global R&D centers and ISO/TS 16949-certified fabs.
The IR3411STRPBF belongs to Infineon's CurrentSense™ family, designed specifically for high-reliability current monitoring in high-voltage, high-noise environments such as traction inverters and renewable energy converters.
FAQ
What is the maximum continuous common-mode voltage the IR3411STRPBF can withstand?
The IR3411STRPBF supports a continuous input common-mode voltage range of –16 V to +80 V. This allows direct high-side shunt sensing on 48 V and 72 V DC bus systems, including those with negative rail offsets during regenerative braking. Absolute maximum ratings specify –20 V to +85 V for short-term transients.
Does the IR3411STRPBF require external compensation components?
No external compensation components are required. The IR3411STRPBF is internally compensated for unity-gain stability and operates reliably with capacitive loads up to 100 pF. Layout best practices-such as placing 100 nF ceramic bypass capacitors within 3 mm of V+ and V– pins-are sufficient for stable operation.
How does the thermal shutdown feature behave during overtemperature events?
When junction temperature exceeds 150°C, the IR3411STRPBF asserts thermal shutdown by forcing the output to mid-scale (VREF/2), not rail clamp. This fail-safe state provides predictable, non-saturating feedback to the controller-enabling safe torque reduction rather than uncontrolled motor stall or fault propagation.
Can the REF pin be used to scale output voltage for different ADC references?
Yes. The REF pin accepts an external 0–2.5 V reference voltage, allowing output scaling to match varying ADC reference levels (e.g., 1.8 V, 2.5 V, or 3.3 V). When left open, it defaults to an internal 2.5 V reference. Output voltage is calculated as VOUT = G × (VIN+ – VIN–) + VREF, where G = 20 V/V.
IR3411STRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- -
- Applications:
- -
- Interface:
- -
- Load Type:
- -
- Technology:
- -
- Rds On (Typ):
- -
- Current - Output / Channel:
- -
- Current - Peak Output:
- -
- Voltage - Supply:
- -
- Voltage - Load:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Fault Protection:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
IR3411STRPBF FAQ
1.How can I place an order for IR3411STRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for IR3411STRPBF 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 IR3411STRPBF reliable?
The price and inventory of IR3411STRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IR3411STRPBF is usually 5 days.
3.What payment methods are accepted for IR3411STRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IR3411STRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IR3411STRPBF?
IR3411STRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IR3411STRPBF 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 IR3411STRPBF?
For technical support, including IR3411STRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IR3411STRPBF requirements.
6.How does Aetrix verify that IR3411STRPBF is sourced from the original manufacturer or authorized distributors?
All IR3411STRPBF 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 IR3411STRPBF meets industry standards.
7.What is the process for return or replacement of IR3411STRPBF?
All IR3411STRPBF units undergo pre-shipment inspection (PSI). If there is an issue with IR3411STRPBF, 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 IR3411STRPBF part is unused and in its original packaging.
Return procedure for IR3411STRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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