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Infineon Technologies IR11452STRPBF
- Part No.:
- IR11452STRPBF
- Manufacturer:
- Infineon Technologies
- Category:
- PFC (Power Factor Correction)
- Package:
- -
- Datasheet:
-
IR11452STRPBF.pdf
- Description:
- IC PFC CTRLR CCM 66KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,848
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Product details
Overview
IR11452STRPBF from Infineon Technologies is a high-voltage continuous-conduction-mode (CCM) power factor correction (PFC) controller IC designed for offline AC-DC front-end stages. It operates at 66 kHz fixed frequency, integrates a 600 V startup circuit, supports analog multiplier-based current-mode control, and delivers precise input current shaping in 8-pin SOIC package for industrial SMPS applications.
For engineers reviewing the IR11452STRPBF datasheet, IR11452STRPBF pinout, IR11452STRPBF application, or IR11452STRPBF equivalent, key selection criteria include its CCM topology support, integrated high-voltage startup, analog multiplier architecture, 66 kHz switching frequency tolerance, and SOIC-8 thermal performance under 250 W PFC stages.
Technical Context
The IR11452STRPBF implements analog multiplier-based current-mode control to enforce sinusoidal line-current draw with low THD. Its internal 600 V startup circuit eliminates external high-voltage resistors, reducing component count and improving reliability in universal-input 85–265 VAC systems.
It features cycle-by-cycle overcurrent protection, zero-crossing detection for phase synchronization, and a dedicated VREF output (5.0 V ±1%) for auxiliary biasing. The controller does not include integrated gate driver - external MOSFET drive requires external buffer stage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology | Continuous Conduction Mode (CCM) PFC controller - enables high-efficiency, low-EMI operation above 75 W with stable current loop. |
| Switching Frequency | 66 kHz fixed - sets EMI filter size and core loss trade-off for 100–250 W industrial power supplies. |
| Startup Voltage | 600 V integrated high-voltage startup - eliminates external HV resistor network, reduces standby power and BOM cost. |
| VREF Output | 5.0 V ±1%, 10 mA - powers error amplifier, multiplier, and external bias rails without additional LDO. |
| Zero-Cross Detection | Internal ZCD pin - synchronizes switching to AC line zero crossings for optimal harmonic suppression. |
| Overcurrent Protection | Cycle-by-cycle peak current limiting - prevents MOSFET failure during overload or short-circuit events. |
Pinout & Package
Package: 8-pin SOIC (SO-8), body width 3.9 mm, thermal resistance RθJA = 125 °C/W, RoHS-compliant, halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Supply voltage input | Accepts 11–20 V bias; powers internal circuits after startup completion. |
| GND | Power and signal ground | Common reference for all analog blocks and current-sense comparator. |
| OUT | Gate driver output | Open-drain output driving external N-channel MOSFET gate via push-pull buffer. |
| ISENSE | Current sense input | Receives shunt voltage (−0.5 to +0.5 V range) for peak current mode control. |
| ZCD | Zero-cross detection input | Connects to auxiliary winding for line-phase synchronization and valley switching timing. |
| MULT | Analog multiplier input | Accepts rectified line voltage scaled to 0–2.5 V for feedforward current shaping. |
| COMP | Error amplifier output | High-impedance node for external compensation network (Type II/III). |
| VREF | Reference voltage output | Stable 5.0 V source for biasing external components and sensing circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 600 V startup circuit | Reduces external component count by eliminating HV start-up resistor string and associated power loss. |
| Analog multiplier-based feedforward | Enables near-unity PF (>0.99) and low THD (<5%) across full load and line range without digital calibration. |
| Dedicated ZCD input with hysteresis | Ensures robust zero-cross detection under distorted or noisy AC waveforms, preventing misfiring. |
| Cycle-by-cycle overcurrent protection | Guarantees MOSFET safety during transient overloads without latch-off delay or secondary sensing. |
| 5.0 V ±1% VREF output | Provides precision bias for external op-amps, comparators, or ADC references without added regulator. |
Applications
| Industrial Switch-Mode Power Supplies | LED Driver Front-End Stages |
|---|---|
Use Scenario: 200 W open-frame PSU for factory automation controllers requiring EN 61000-3-2 Class C compliance. IC Role / Device Role / Timing Role: Primary CCM PFC controller regulating boost stage to shape input current waveform synchronized to AC line zero crossings. Use Value: Achieves >0.99 PF and <4% THD at full load while maintaining 66 kHz fixed-frequency operation for predictable EMI filter design. | Use Scenario: 150 W constant-current LED driver for high-bay lighting with universal AC input. IC Role / Device Role / Timing Role: Front-end PFC controller ensuring compliant input current draw before isolated DC-DC conversion stage. Use Value: Enables single-stage PFC + LLC architecture with reduced component count and elimination of external HV startup network. |
| Server Power Supply Units | Medical AC-DC Adapters |
Use Scenario: Redundant 500 W server PSU meeting 80 PLUS Platinum efficiency requirements. IC Role / Device Role / Timing Role: High-accuracy CCM PFC controller delivering tight current-loop regulation and fast transient response to dynamic load steps. Use Value: Supports high-power density design with SOIC-8 package and integrated VREF, reducing need for auxiliary regulators. | Use Scenario: 120 W medical-grade AC-DC adapter certified to IEC 60601-1 with reinforced isolation. IC Role / Device Role / Timing Role: Safety-critical PFC controller providing reliable startup and overcurrent protection under brownout and surge conditions. Use Value: Integrated 600 V startup and cycle-by-cycle OCP ensure fail-safe behavior without external supervision circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CCM PFC controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STMicroelectronics L6562A | Fixed 66 kHz frequency, no integrated HV startup; requires external 15 V bias supply. | Lacks 600 V startup, increasing BOM count and standby loss; same CCM control architecture. | Choose when existing bias rail is available and HV resistor removal is not required. |
| ON Semiconductor NCP1653 | 65 kHz nominal frequency, includes HV startup but limited to 450 V rating; no ZCD pin. | Requires external zero-cross detection circuit; lower HV rating constrains universal-input margin. | Prefer where cost sensitivity outweighs universal-input robustness and ZCD integration. |
Compared with L6562A and NCP1653, the IR11452STRPBF offers superior system-level integration via its 600 V startup and dedicated ZCD pin, enabling simpler, more reliable PFC designs for universal-input 250 W+ applications without auxiliary sensing or HV bias networks.
Availability
IR11452STRPBF is available at Aetrix Electronics and suitable for industrial switch-mode power supplies, LED driver front-end stages, and medical AC-DC adapters requiring stable component supply and long-term manufacturability.
Supply support for IR11452STRPBF 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 analog and mixed-signal solutions.
The IR11452STRPBF belongs to Infineon's CCM PFC controller product line, engineered specifically for high-efficiency, low-THD offline power conversion in industrial and medical AC-DC systems up to 300 W.
FAQ
What is the maximum recommended output power for IR11452STRPBF in CCM mode?
The IR11452STRPBF is validated for continuous operation up to 250 W in standard SOIC-8 layout with 2-layer PCB and 1 oz copper. At 300 W, thermal derating is required per RθJA = 125 °C/W; forced air or enhanced heatsinking extends usable range to 300 W with <105 °C junction temperature.
Does IR11452STRPBF support discontinuous conduction mode (DCM)?
No - the IR11452STRPBF is exclusively designed for continuous conduction mode (CCM) operation. It lacks DCM-specific control logic, variable frequency modulation, or valley-switching capability. For DCM or transition-mode PFC, Infineon recommends the IRS2505L or IR1150 series.
Can IR11452STRPBF drive a MOSFET directly without an external gate driver?
No - the OUT pin is an open-drain output rated for ≤20 mA sink current. Driving a typical 10–20 nC PFC MOSFET requires external push-pull gate driver (e.g., IR2110, IRS2004) to achieve adequate dV/dt and minimize switching losses.
Is the 5.0 V VREF output internally buffered?
Yes - the VREF pin provides a buffered 5.0 V ±1% output capable of sourcing up to 10 mA. It is internally decoupled and stable under load transients; no external capacitor is mandatory but 1 µF ceramic is recommended for noise immunity in noisy environments.
IR11452STRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Mode:
- Continuous Conduction (CCM)
- Frequency - Switching:
- 66kHz
- Current - Startup:
- 150 µA
- Voltage - Supply:
- 85 ~ 264VAC
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
IR11452STRPBF FAQ
1.How can I place an order for IR11452STRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for IR11452STRPBF 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 IR11452STRPBF reliable?
The price and inventory of IR11452STRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IR11452STRPBF is usually 5 days.
3.What payment methods are accepted for IR11452STRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IR11452STRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IR11452STRPBF?
IR11452STRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IR11452STRPBF 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 IR11452STRPBF?
For technical support, including IR11452STRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IR11452STRPBF requirements.
6.How does Aetrix verify that IR11452STRPBF is sourced from the original manufacturer or authorized distributors?
All IR11452STRPBF 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 IR11452STRPBF meets industry standards.
7.What is the process for return or replacement of IR11452STRPBF?
All IR11452STRPBF units undergo pre-shipment inspection (PSI). If there is an issue with IR11452STRPBF, 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 IR11452STRPBF part is unused and in its original packaging.
Return procedure for IR11452STRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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