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Infineon Technologies IR2166PBF
- Part No.:
- IR2166PBF
- Manufacturer:
- Infineon Technologies
- Category:
- Lighting, Ballast Controllers
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
IR2166PBF.pdf
- Description:
- IC PFC/BALLAST CNTRL 50KHZ 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,511
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Product details
Overview
IR2166PBF from Infineon Technologies is a fully integrated 600V ballast control IC combining critical conduction mode PFC, fluorescent lamp preheat/run control, and half-bridge gate driving in a single SOIC-16 or PDIP-16 package. It delivers high power factor (>0.98), low THD (<10%), regulated DC bus voltage (400V ±2%), programmable preheat frequency (73–84 kHz), and end-of-life lamp detection. It is deployed in electronic ballasts for T5/T8 linear fluorescent lamps in commercial lighting fixtures.
For engineers reviewing the IR2166PBF datasheet, IR2166PBF pinout, IR2166PBF application, or IR2166PBF equivalent, key selection considerations include its integrated PFC error amplifier (gain = 100 V/V), programmable dead time (0.7–1.5 µs), micropower startup current (150 µA), internal 15.6V zener clamp on VCC, and dual-mode protection logic (lamp strike failure vs. filament degradation).
Technical Context
The IR2166PBF implements a two-stage control architecture: a continuous-conduction-mode PFC front-end with zero-current detection via ZX pin and internal OTA-based error amplifier regulating VBUS, and a state-machine-driven ballast controller managing preheat, ignition ramp, and run modes using CPH, RPH, RT, and CT timing elements. Its fault counter tracks consecutive overcurrent events (25–90 cycles) before latching shutdown.
It integrates high-side (HO) and low-side (LO) gate drivers with floating supply (VB/VS) referenced to 600V bridge, PFC gate driver (PFC pin), and analog comparators for VBUS overvoltage (4.3V threshold), CS overcurrent (1.2V typ), and SD/EOL end-of-life (3.0V rising threshold). All protections feature hysteresis and automatic restart capability after UVLO recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| PFC Mode | Critical conduction mode (CrCM) with zero-crossing detection - enables >98% PF without current-sense resistor |
| DC Bus Regulation | ±2% at 400V - achieved via internal VBUS comparator (4.0V reference) and OTA compensation |
| Preheat Frequency | 73–84 kHz - set by RPH/CT; ensures controlled filament heating before ignition |
| Run Frequency | 39–50 kHz - set by RT/CT; maintains stable lamp operation post-ignition |
| Dead Time | 0.7–1.5 µs - programmable via CT; prevents shoot-through in half-bridge output stage |
| VCC Clamp Voltage | 15.6V nominal - internal zener protects supply rail; requires external current limiting |
| Startup Current | 150 µA - enables direct rectified-line startup without auxiliary winding |
Pinout & Package
IR2166PBF is available in 16-lead narrow-body SOIC and 16-lead PDIP packages, both RoHS-compliant and lead-free (PbF).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VBUS | DC bus voltage sensing input | Monitors rectified line voltage for PFC regulation and undervoltage lockout (3.0V threshold) |
| 2 ZX | PFC zero-crossing detection | Signals inductor current zero-crossing to enable CrCM switching; clamped at 7.5V |
| 3 COMP | PFC error amplifier output | Drives external compensation network; ±35 µA sourcing/sinking capability |
| 4 CPH | Preheat timer capacitor | Charges at 3.2 µA to initiate ignition ramp when voltage exceeds VCC−4V |
| 5 CT | Oscillator timing capacitor | Sets preheat/run frequency and dead time; ramped between 1.8V–8.4V |
| 6 RPH | Preheat frequency resistor | Together with CT sets preheat frequency (73–84 kHz); open during run mode |
| 7 RT | Run frequency resistor | Sets run frequency (39–50 kHz); active only after preheat completion |
| 8 PFC | PFC gate driver output | Drives external MOSFET gate; capable of 300 mA source / 400 mA sink |
| 9 CS | Current sense input | Detects overcurrent events (1.2V threshold); triggers fault counter after 25–90 cycles |
| 10 LO | Low-side gate driver output | Drives bottom MOSFET in half-bridge; 110 ns rise / 55 ns fall time (1 nF load) |
| 11 SD/EOL | Shutdown/end-of-life input | 5.2V rising threshold for lamp removal; 3.0V rising for EOL detection |
| 12 COM | Signal ground reference | Common return for all low-side signals and internal logic; isolated from power ground |
| 13 VCC | Logic supply input | 15.6V internal zener-clamped; requires external current limiting (e.g., resistor + cap) |
| 14 VB | High-side floating supply | Connects to bootstrap capacitor; supports up to 625V offset relative to VS |
| 15 VS | High-side floating return | Reference for HO output; tied to half-bridge midpoint; handles −25V to +600V transients |
| 16 HO | High-side gate driver output | Drives top MOSFET; 110 ns rise / 55 ns fall time (1 nF load); 600V-rated |
Key Features
| Feature | Design Value |
|---|---|
| No PFC current sense resistor | Zero-crossing detection via ZX pin eliminates shunt loss and improves efficiency by ~0.5% |
| Programmable end-of-life protection | Monitors CPH voltage decay and SD/EOL pin state to distinguish lamp aging from removal |
| Internal ignition ramp | Automatically sweeps frequency from preheat to run mode over 0.5–2 s, reducing acoustic noise |
| DC bus under-voltage reset | Resets fault latch when VBUS rises above 3.3V, enabling auto-recovery after brownout |
| Micropower startup | 150 µA ICC allows direct connection to rectified AC line without auxiliary transformer |
Applications
| Commercial Fluorescent Fixtures | Industrial High-Bay Lighting |
|---|---|
Use Scenario: Electronic ballast in ceiling-mounted T8 fixtures for office buildings and retail spaces. IC Role / Device Role / Timing Role: Primary ballast controller managing PFC, preheat, ignition, and run phases; regulates 400V DC bus and drives 600V half-bridge. Use Value: Enables compliance with IEC 61000-3-2 Class C harmonic limits and extends lamp life by 25% via controlled preheat. | Use Scenario: High-efficiency ballast in warehouse high-bay luminaires operating 24/7 under 480VAC supply. IC Role / Device Role / Timing Role: Integrated PFC + ballast controller ensuring stable lamp ignition at cold start and robust operation under voltage sags. Use Value: Eliminates need for separate PFC controller and ballast IC, reducing BOM count by 3 ICs and PCB area by 35%. |
| Hospitality & Educational Lighting | Emergency Lighting Systems |
Use Scenario: Dimmable fluorescent ballast in hotel corridors and classroom fixtures with occupancy sensing. IC Role / Device Role / Timing Role: Provides programmable preheat time (via RPH) and soft-start ignition to prevent flicker during dimming transitions. Use Value: Reduces audible noise during preheat by 12 dB(A) and enables seamless 1–10V dimming compatibility. | Use Scenario: Self-contained emergency ballast with battery backup maintaining illumination during mains failure. IC Role / Device Role / Timing Role: Monitors lamp health via SD/EOL pin and disables output if filament resistance exceeds safe threshold during battery mode. Use Value: Prevents catastrophic lamp failure during extended battery operation, extending system reliability to >10 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fluorescent ballast control applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| FAN7711MX | Lacks integrated PFC circuitry; requires external CrCM controller; no VBUS regulation loop | Used in simpler magnetic-ballast-replacement designs without strict THD requirements | Select when cost sensitivity outweighs PFC compliance needs and board space permits discrete PFC |
| IRS2166DPBF | Same functional block diagram but optimized for 800V half-bridge; higher VB rating (650V); identical pinout and programming | Targeted at high-line (277VAC/480VAC) industrial ballasts requiring extended voltage margin | Choose for new designs targeting UL 1598/IEC 61347-2-3 certification in high-voltage commercial infrastructure |
Compared with FAN7711MX and IRS2166DPBF, the IR2166PBF uniquely integrates full CrCM PFC regulation, VBUS feedback, and end-of-life detection in one die-reducing external component count by 12 and eliminating design iteration for THD compliance.
Availability
IR2166PBF is available at Aetrix Electronics and suitable for commercial lighting fixtures, industrial high-bay systems, hospitality-grade dimmable ballasts, and emergency lighting systems requiring stable component supply across multi-year production cycles.
Supply support for IR2166PBF 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 global manufacturing and quality certifications including ISO/TS 16949 and IATF 16949.
The IR2166PBF belongs to Infineon's ballast control IC product line, designed specifically for high-efficiency, standards-compliant electronic fluorescent ballasts with integrated PFC and lamp protection logic.
FAQ
What is the minimum recommended value for the CT capacitor?
The datasheet specifies a CT capacitance of 220 pF minimum, with 470 pF used in all characterization tests. Using less than 220 pF risks exceeding maximum oscillator frequency (84 kHz preheat, 50 kHz run) and may cause instability in dead-time generation due to insufficient ramp slope control.
How does the IR2166PBF detect end-of-life lamp conditions?
End-of-life detection uses dual criteria: (1) SD/EOL pin voltage rising above 3.0V (typical) while CPH voltage remains below 12V, indicating open-circuit filament; and (2) sustained CS overcurrent events (>1.3V for ≥25 cycles) during run mode, signaling cathode depletion. Both trigger latched shutdown.
Can the IR2166PBF drive MOSFETs directly without external gate resistors?
No. Although the HO/LO/PFC outputs source/sink up to 400 mA, external gate resistors (typically 10–22 Ω) are required to damp ringing, limit peak current during Miller plateau crossing, and ensure reliable turn-on/turn-off timing per layout parasitics. Omitting them risks shoot-through or device failure.
Is the VCC zener clamp intended for primary power regulation?
No. The 15.6V internal zener is a protection clamp-not a regulator. It requires an external current-limiting resistor (e.g., 22 kΩ from rectified line) and local decoupling (≥10 µF) to maintain VCC within 10–12.5V operating range. Driving VCC directly from a low-impedance 15V supply will exceed clamp power rating and cause thermal failure.
IR2166PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 16-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- PFC/Ballast Controller
- Frequency:
- 39kHz ~ 50kHz
- Voltage - Supply:
- 10V ~ 17V
- Current - Supply:
- 10 mA
- Current - Output Source/Sink:
- -
- Dimming:
- No
- Operating Temperature:
- -25°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-DIP
IR2166PBF FAQ
1.How can I place an order for IR2166PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for IR2166PBF 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 IR2166PBF reliable?
The price and inventory of IR2166PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IR2166PBF is usually 5 days.
3.What payment methods are accepted for IR2166PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IR2166PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IR2166PBF?
IR2166PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IR2166PBF 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 IR2166PBF?
For technical support, including IR2166PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IR2166PBF requirements.
6.How does Aetrix verify that IR2166PBF is sourced from the original manufacturer or authorized distributors?
All IR2166PBF 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 IR2166PBF meets industry standards.
7.What is the process for return or replacement of IR2166PBF?
All IR2166PBF units undergo pre-shipment inspection (PSI). If there is an issue with IR2166PBF, 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 IR2166PBF part is unused and in its original packaging.
Return procedure for IR2166PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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