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Infineon Technologies IR2177STRPBF
- Part No.:
- IR2177STRPBF
- Manufacturer:
- Infineon Technologies
- Category:
- Current Regulation/Management
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
IR2177STRPBF.pdf
- Description:
- IC CURRENT SENSE 0.2% 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,916
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Product details
Overview
IR2177STRPBF from Infineon Technologies is a high-accuracy, isolated current sense amplifier with 0.2% gain error, 150 kHz bandwidth, and integrated galvanic isolation for motor phase current monitoring in three-phase inverter systems. It delivers ±100 mV output proportional to sensed current and operates from a 3.3 V or 5 V secondary-side supply.
For engineers reviewing the IR2177STRPBF datasheet, IR2177STRPBF pinout, IR2177STRPBF application, or IR2177STRPBF equivalent, key selection criteria include isolated analog output linearity, primary-side common-mode transient immunity (CMTI > 100 kV/µs), unidirectional/bidirectional sensing capability, and SOIC-16W package compatibility with reinforced insulation requirements.
Technical Context
The IR2177STRPBF implements a sigma-delta modulator on the primary side coupled with an on-chip digital filter and isolated serial interface, delivering a continuous-time analog voltage output. Its internal isolation barrier meets UL 1577 (5 kVRMS) and VDE 0884-11 (VIORM = 1250 V) standards.
It supports both unidirectional and bidirectional current sensing via external resistor configuration and features built-in overcurrent detection with fast fault reporting through dedicated OC pin. The device requires no external oscillator or calibration components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Error | ±0.2% - Enables precise torque control in servo drives without system-level calibration. |
| Bandwidth | 150 kHz - Supports accurate current sampling up to 20 kHz PWM switching frequencies with minimal phase lag. |
| CMTI | >100 kV/µs - Maintains signal integrity during fast IGBT/MOSFET switching transients in industrial inverters. |
| Isolation Rating | 5 kVRMS (UL), 1250 V VIORM (VDE) - Meets reinforced insulation requirements for 690 VAC motor drives. |
| Output Range | ±100 mV - Directly interfaces with standard ADC inputs without scaling amplifiers. |
| Supply Voltage (Secondary) | 3.3 V or 5 V - Compatible with common microcontroller I/O domains and low-power isolated supplies. |
Pinout & Package
IR2177STRPBF is housed in a wide-body 16-pin SOIC package (SOIC-16W, 10.3 mm body width) with creepage/clearance ≥8.0 mm and reinforced insulation barrier between primary and secondary sides.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDA | Primary-side analog supply | Connects to 3.3 V or 5 V isolated supply feeding modulator core; decoupling required. |
| INA+, INA− | Differential current sense inputs | Accepts voltage across shunt resistor; common-mode range extends to 650 V above ground. |
| VOUT | Analog output | Delivers ±100 mV proportional to sensed current; drives 10 kΩ load minimum. |
| OC | Overcurrent fault flag | Open-drain output asserting low within 1 µs of overcurrent event; requires pull-up. |
| VDD | Secondary-side supply | 3.3 V or 5 V logic supply for output stage and fault reporting circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated galvanic isolation | Eliminates need for external isolators or optocouplers in shunt-based current feedback loops. |
| Bidirectional sensing support | Configurable via external resistor network to monitor regenerative braking or four-quadrant motor operation. |
| Fast overcurrent response | 1 µs fault detection latency enables compliance with IEC 61800-5-1 functional safety timing constraints. |
| No external clock or calibration | Reduces BOM count and layout complexity while maintaining factory-trimmed accuracy over temperature. |
Applications
| Industrial Motor Drives | EV Traction Inverters |
|---|---|
Use Scenario: Closed-loop field-oriented control (FOC) of 3-phase PMSM/induction motors in HVAC compressors and pumps. IC Role / Device Role / Timing Role: Primary current sensor providing real-time phase current feedback to MCU ADC with <1 µs latency. Use Value: Enables torque ripple reduction below 2% THD and stable operation at low speeds (<1 rpm) due to 0.2% gain accuracy. | Use Scenario: Phase current monitoring in 400 V battery-powered traction inverters for light-duty EVs. IC Role / Device Role / Timing Role: Isolated analog current channel for each motor phase, referenced to high-side switching node. Use Value: Supports ASIL-B compliant diagnostics via OC pin fault signaling and CMTI >100 kV/µs noise immunity during 10 kHz PWM bursts. |
| Solar Microinverters | UPS Systems |
Use Scenario: DC-link and AC output current sensing in single-phase transformerless microinverters. IC Role / Device Role / Timing Role: Bidirectional current measurement for MPPT tracking and grid-synchronization current control. Use Value: ±0.2% gain error ensures energy yield accuracy within ±0.1% over 0–70°C, critical for revenue-grade metering. | Use Scenario: Inverter-stage current protection and load-current feedback in online double-conversion UPS units. IC Role / Device Role / Timing Role: High-bandwidth current monitor on output leg to enable fast overload shutdown and waveform shaping. Use Value: 150 kHz bandwidth allows accurate harmonic content capture up to 25th order, supporting IEEE 519-compliant THD control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated current sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AMC1301SDWR | Higher gain error (±0.3%), lower CMTI (75 kV/µs), same SOIC-16W package | Limited to 480 VAC systems; not certified for 690 VAC motor drives | Preferred where cost sensitivity outweighs CMTI and accuracy requirements |
| HCPL-788J | Optocoupler-based architecture; slower response (>2 µs), no integrated overcurrent flag | Requires external comparator and timing circuit for fault detection | Used in legacy designs with existing opto-isolator footprint and lower bandwidth needs |
Compared with AMC1301SDWR and HCPL-788J, IR2177STRPBF provides superior accuracy and noise immunity for high-performance motor control, while eliminating discrete fault-detection circuitry required by optocoupler alternatives.
Availability
IR2177STRPBF is available at Aetrix Electronics and suitable for industrial motor drives, EV traction inverters, solar microinverters, and UPS systems requiring stable component supply and long-term design-in support.
Supply support for IR2177STRPBF 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 semiconductors, sensors, and automotive ICs, with leadership in high-voltage isolation and motor control solutions.
The IR2177 belongs to Infineon's high-accuracy isolated analog current sensor product line, designed specifically for precision current feedback in high-reliability industrial and transportation power conversion systems.
FAQ
What is the maximum working voltage supported across the isolation barrier?
The IR2177STRPBF supports a maximum repetitive peak voltage of 650 V across its isolation barrier, with reinforced insulation rated to 5 kVRMS per UL 1577 and VIORM = 1250 V per VDE 0884-11. This enables direct connection to 690 VAC three-phase bus systems without additional voltage dividers or protection networks.
Does IR2177STRPBF require external calibration for production use?
No. The IR2177STRPBF is factory-trimmed for gain and offset across temperature, delivering ±0.2% gain error and ±1 mV offset over −40°C to +125°C without user calibration. System-level calibration is optional but not necessary for most industrial drive applications meeting IEC 61800-3 Class C2 EMC requirements.
Can IR2177STRPBF measure bidirectional current without hardware modification?
Yes. Bidirectional sensing is enabled by configuring the external shunt resistor network to reference the input common-mode voltage to mid-rail (VDDA/2) instead of ground. No PCB redesign is needed-only resistor value changes and proper biasing of INA−, as specified in Infineon Application Note AN-2021-07.
How does the OC pin behave during overcurrent events?
The OC pin is an open-drain output that pulls low within 1 µs of detecting current exceeding the programmed threshold (set by external resistor). It remains asserted until the fault condition clears and the internal latch resets automatically after ~100 ns, enabling direct connection to MCU GPIO interrupt pins without external debouncing circuitry.
IR2177STRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Current Sense
- Sensing Method:
- -
- Accuracy:
- ±0.2%
- Voltage - Input:
- 8V ~ 20V
- Current - Output:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
IR2177STRPBF FAQ
1.How can I place an order for IR2177STRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for IR2177STRPBF 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 IR2177STRPBF reliable?
The price and inventory of IR2177STRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IR2177STRPBF is usually 5 days.
3.What payment methods are accepted for IR2177STRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IR2177STRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IR2177STRPBF?
IR2177STRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IR2177STRPBF 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 IR2177STRPBF?
For technical support, including IR2177STRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IR2177STRPBF requirements.
6.How does Aetrix verify that IR2177STRPBF is sourced from the original manufacturer or authorized distributors?
All IR2177STRPBF 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 IR2177STRPBF meets industry standards.
7.What is the process for return or replacement of IR2177STRPBF?
All IR2177STRPBF units undergo pre-shipment inspection (PSI). If there is an issue with IR2177STRPBF, 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 IR2177STRPBF part is unused and in its original packaging.
Return procedure for IR2177STRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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