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International Test Instruments Corporation IR2175PBF
- Part No.:
- IR2175PBF
- Manufacturer:
- International Test Instruments Corporation
- Category:
- Current Regulation/Management
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
IR2175PBF.pdf
- Description:
- IC CURRENT SENSE 0.5% 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:500
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Product details
Overview
IR2175PBF from Infineon Technologies (formerly International Rectifier) is a monolithic linear current sensing IC for motor phase current monitoring in 3-phase inverter drives. It converts shunt-resistor-based analog current signals into discrete PWM output with 130kHz carrier frequency, ±260mV input range, 160%/V gain, and 2µs overcurrent trip delay - enabling direct interface to MCU PWM capture inputs without external ADC. Used in industrial BLDC and PMSM motor controllers.
For engineers reviewing the IR2175PBF datasheet, IR2175PBF pinout, IR2175PBF application, or IR2175PBF equivalent, key selection criteria include floating channel voltage rating (600V max), input offset drift (20ppm/°C), PWM duty range (9–91%), open-drain OC output compatibility with 3.3V–15V logic, and bootstrap supply quiescent current (2mA).
Technical Context
The IR2175PBF implements a high-voltage floating channel architecture with integrated level-shifting and modulation circuitry, allowing direct sensing of high-side motor phase currents referenced to VS (up to +600V offset). Its internal oscillator generates a fixed 130kHz carrier, modulated by VIN+ to produce a duty-cycle-proportional PWM output (PO) referenced to COM.
It features independent overcurrent detection with dedicated OC pin, triggered when |VIN+ − VIN−| exceeds ±260mV, with propagation delay under 2µs. Input stage includes overvoltage protection and ±260mV full-scale linear range, while open-drain outputs support flexible logic-level interfacing across VCC = 9.5–20V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VOFFSET | 600V max - supports high-side current sensing in 600V-class IGBT or MOSFET inverters |
| Gain | 160%/V typ - maps ±260mV input to 9–91% PWM duty cycle, enabling precise current-to-digital conversion |
| fo | 130kHz typ - fixed carrier frequency ensures consistent PWM timing and predictable EMI profile |
| Overcurrent trip level | ±260mV typ - matches full-scale input range for immediate short-circuit detection without scaling |
| IQBS | 2mA max - enables low-power bootstrap supply design with minimal gate driver loading |
| Input offset drift | 20ppm/°C typ - contributes <±0.3% gain error over −40°C to +125°C ambient |
| Linearity | ±0.5% max - ensures accurate current reconstruction across full dynamic range |
Pinout & Package
IR2175PBF is supplied in an 8-lead PDIP package (JEDEC MS-001AB), lead-free (PbF) compliant, with through-hole mounting and 0.3-inch width. Pin 1 marked by notch or dot; body dimensions 9.27 × 6.35 × 3.30 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Low-side logic supply | Provides power for internal logic and OC output stage; requires 9.5–20V referenced to COM |
| OC | Open-drain overcurrent flag | Active-low signal asserted within 2µs of overcurrent event; sinks up to 10mA at VO = 0.1V |
| PO | Digital PWM output | Open-drain PWM output proportional to sensed current; duty cycle 9–91% over ±260mV input |
| COM | Low-side ground reference | Common return for VCC, OC, PO, and VIN−; must be tied to system logic ground |
| N.C. | No connection | Unbonded pin; must remain unconnected per datasheet layout guidance |
| VS | Floating high-side return | Reference node for high-side shunt resistor; potential floats up to +600V above COM |
| VIN+ | Positive current sense input | Accepts differential voltage across shunt (vs. VS); linear range −260mV to +260mV |
| VB | Floating high-side supply | Provides bias for high-side modulation circuitry; connected to bootstrap capacitor between VB and VS |
Key Features
| Feature | Design Value |
|---|---|
| Floating channel isolation | Supports direct high-side current sensing up to +600V offset without optocouplers or isolated amplifiers |
| Direct digital PWM output | Eliminates need for external ADC or comparator; interfaces natively with MCU timer capture peripherals |
| Independent fast OC signal | 2µs trip delay enables sub-microsecond IGBT short-circuit protection, critical for reliable inverter shutdown |
| Open-drain outputs | Allows interoperability with 3.3V, 5V, or 15V logic families via pull-up to compatible VCC rail |
| High common-mode noise immunity | Robust operation in noisy inverter environments due to proprietary HV isolation and differential input structure |
Applications
| Industrial BLDC Motor Drives | PMSM Servo Amplifiers |
|---|---|
Use Scenario: Closed-loop torque control in factory automation conveyors using 3-phase BLDC motors with IGBT-based inverters. IC Role / Device Role / Timing Role: High-side phase current sensor converting shunt voltage to PWM for real-time current feedback to MCU. Use Value: Enables precise current regulation with 0.5% linearity and 20ppm/°C gain stability across operating temperature range. | Use Scenario: Position- and velocity-controlled servo systems requiring fast overcurrent response during dynamic load changes. IC Role / Device Role / Timing Role: Dedicated overcurrent monitor with 2µs trip delay protecting IGBTs during short-circuit faults. Use Value: Prevents destructive failure by triggering gate driver disable before IGBT thermal runaway occurs. |
| Inverter-Based HVAC Compressors | Electric Vehicle Auxiliary Drives |
Use Scenario: Variable-speed compressor control in commercial HVAC units with 400V DC-link and Si IGBT modules. IC Role / Device Role / Timing Role: Linear current transducer feeding PWM-modulated current data to DSP-based field-oriented control loop. Use Value: Delivers 130kHz carrier-modulated feedback with stable gain, supporting >10kHz current loop bandwidth. | Use Scenario: Low-power auxiliary motor drives (e.g., coolant pumps, fans) in EV powertrain subsystems. IC Role / Device Role / Timing Role: Isolated current monitor interfacing to 3.3V automotive microcontrollers via open-drain PO and OC outputs. Use Value: Eliminates need for isolated power supplies or level shifters, reducing BOM count and board area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar linear current sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ACS712ELCTR-20A-T | Galvanically isolated Hall-effect sensor; analog output; ±20A range; no PWM output | Requires external ADC and lacks fast OC signal; suited for lower-bandwidth monitoring, not real-time control | Choose only if analog output and lower cost outweigh need for PWM interface and fast fault response |
| INA240A1D | High-side current sense amplifier with bidirectional capability; 80V common-mode; analog output; no integrated oscillator or OC logic | Needs external PWM modulator and fault comparator; higher design complexity for same functional outcome | Select when ultra-low offset (±5µV) and wide bandwidth (400kHz) are prioritized over integration and fault speed |
Compared with ACS712ELCTR-20A-T and INA240A1D, IR2175PBF uniquely integrates PWM modulation, 600V floating capability, and sub-2µs overcurrent response - making it optimal for space-constrained, high-reliability motor control where digital feedback and fast protection are co-required.
Availability
IR2175PBF is available at Aetrix Electronics and suitable for industrial BLDC motor drives, PMSM servo amplifiers, inverter-based HVAC compressors, and electric vehicle auxiliary drives requiring stable component supply and long-term production continuity.
Supply support for IR2175PBF 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, and industrial control ICs, with leadership in high-voltage gate drivers and sensing solutions.
The IR2175PBF belongs to Infineon's legacy IR21xx high-voltage current sensing family, designed specifically for robust, integrated current feedback in 3-phase motor inverter stages - emphasizing reliability, noise immunity, and direct digital interfacing.
FAQ
What is the maximum allowable dV/dt on the VS pin?
The absolute maximum allowable dV/dt on the VS pin is 50 V/ns, as specified in the Absolute Maximum Ratings table. Exceeding this rate risks internal latch-up or erroneous overcurrent triggering due to capacitive coupling into the high-side sensing path. Layout best practices include minimizing VS trace length, using ground guard rings, and avoiding routing near switching nodes.
Can IR2175PBF sense bidirectional current?
No - IR2175PBF is unidirectional and measures current magnitude only relative to VS. Its input range is −260mV to +260mV, but the output PWM duty cycle increases monotonically with increasing positive VIN+, and decreases with negative VIN+. It does not distinguish direction; for true bidirectional sensing, a dual-supply amplifier or separate high-/low-side configuration is required.
Is an external bootstrap capacitor required for normal operation?
Yes - an external bootstrap capacitor must be placed between VB and VS pins when using floating high-side operation. This capacitor supplies the gate drive energy for the internal high-side modulation circuitry. Typical values range from 0.1µF to 0.47µF, rated ≥25V, with low ESR ceramic construction recommended for stable 130kHz carrier operation.
Does IR2175PBF require a separate VBS supply?
No - IR2175PBF does not have a VBS pin. The VB pin serves as the high-side floating supply input, and its voltage is derived from the bootstrap capacitor charged via an external diode from VCC. There is no separate VBS terminal; all high-side bias is internally generated from VB and VS potentials.
IR2175PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- International Test Instruments Corporation
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Current Sense
- Sensing Method:
- -
- Accuracy:
- ±0.5%
- Voltage - Input:
- 9.5V ~ 20V
- Current - Output:
- 20mA
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-DIP
IR2175PBF FAQ
1.How can I place an order for IR2175PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for IR2175PBF 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 IR2175PBF reliable?
The price and inventory of IR2175PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IR2175PBF is usually 5 days.
3.What payment methods are accepted for IR2175PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IR2175PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IR2175PBF?
IR2175PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IR2175PBF 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 IR2175PBF?
For technical support, including IR2175PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IR2175PBF requirements.
6.How does Aetrix verify that IR2175PBF is sourced from the original manufacturer or authorized distributors?
All IR2175PBF 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 IR2175PBF meets industry standards.
7.What is the process for return or replacement of IR2175PBF?
All IR2175PBF units undergo pre-shipment inspection (PSI). If there is an issue with IR2175PBF, 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 IR2175PBF part is unused and in its original packaging.
Return procedure for IR2175PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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