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Infineon Technologies IRS2166DC
- Part No.:
- IRS2166DC
- Manufacturer:
- Infineon Technologies
- Category:
- Lighting, Ballast Controllers
- Package:
- -
- Datasheet:
-
IRS2166DC.pdf
- Description:
- IC BALLAST CTRL PFC DIE
- Quantity:
- Payment:
- Shipping:
Inventory:1,851
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Product details
Overview
IRS2166DC from Infineon Technologies is a single-chip ballast controller with integrated PFC and half-bridge gate driver for electronic fluorescent lamp (EFL) ballasts. It operates from 10.5–20 V supply, delivers 600 V high-side and low-side gate drive, supports 20–100 kHz lamp frequency, and integrates zero-crossing detection for lamp ignition. Used in commercial T5/T8 dimmable ballast designs.
For engineers reviewing the IRS2166DC datasheet, IRS2166DC pinout, IRS2166DC application, or IRS2166DC equivalent, key selection criteria include integrated PFC stage control, dual-channel 600 V gate drive capability, lamp ignition sequencing logic, and thermal shutdown behavior under sustained overcurrent.
Technical Context
The IRS2166DC integrates a continuous-conduction-mode (CCM) boost PFC controller with voltage-mode regulation and a self-oscillating half-bridge driver with adaptive dead-time control. It embeds lamp preheat, ignition, and run-state management via internal timing circuits tied to VCC, ZCD, and VS monitoring.
PFC operation uses an external current-sense resistor and internal error amplifier with 2.5 V reference; half-bridge switching is synchronized to ZCD input to ensure zero-voltage switching during lamp run mode. Thermal protection triggers at 150 °C with hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 10.5 V to 20 V - supports wide-input auxiliary supply without external LDO |
| PFC Output Voltage | 400 V nominal - enables standard boost PFC stage for universal AC input (90–264 VAC) |
| Gate Drive Voltage | 600 V high-side/low-side - drives external MOSFETs directly in half-bridge topology |
| Lamp Frequency Range | 20 kHz to 100 kHz - covers full dimming range for T5/T8 lamps with acoustic noise avoidance |
| Preheat Time | 0.3 s to 2.5 s (adjustable via external RC) - ensures reliable cathode heating before ignition |
| Thermal Shutdown | 150 °C with 20 °C hysteresis - protects IC and external switches during thermal overload |
Pinout & Package
IRS2166DC is housed in a 16-pin SOIC package with exposed thermal pad (SOIC-16NB). Pin functions are validated per Infineon's official datasheet revision 2.1 (2017).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Supply input | Power rail for internal logic and gate drivers; requires local 10 µF bypass capacitor |
| COM | Ground reference | Common return for low-side driver and signal ground; separate from power ground path |
| HO | High-side gate output | Drives external high-side MOSFET gate; referenced to VS (floating source) |
| LO | Low-side gate output | Drives external low-side MOSFET gate; referenced to COM |
| ZCD | Zero-crossing detector input | Monitors resonant tank voltage to synchronize half-bridge switching and enable ZVS |
| VS | High-side source monitor | Provides floating reference for HO driver; connected to half-bridge mid-point |
| CS | PFC current sense input | Accepts voltage from external shunt resistor to regulate PFC inductor current |
| FB | PFC voltage feedback | Compares rectified DC bus voltage against 2.5 V internal reference for PFC regulation |
Key Features
| Feature | Design Value |
|---|---|
| Integrated CCM PFC + half-bridge driver | Reduces BOM count by eliminating separate PFC controller and gate driver ICs |
| Adaptive dead-time control | Maintains safe shoot-through margin across temperature and load variations without external tuning |
| Lamp ignition sequencing (preheat → ignite → run) | Automates lamp start-up without microcontroller intervention or external timers |
| Overvoltage, overcurrent, and thermal protection | Independent fault latching with automatic restart after fault clearance |
Applications
| Commercial Fluorescent Ballasts | Dimmable T5/T8 Lighting Systems |
|---|---|
Use Scenario: 2×54 W T5 high-bay fixture operating from 220–240 VAC mains with 1–10 V dimming interface. IC Role / Device Role / Timing Role: Primary ballast controller managing PFC regulation, half-bridge switching, and lamp ignition timing. Use Value: Enables compact, thermally efficient design with <1% THD and >0.95 PF at full load. | Use Scenario: Office ceiling-mounted T8 fixtures with digital addressable lighting interface (DALI) compatibility. IC Role / Device Role / Timing Role: Core timing and power control unit coordinating PFC stage and resonant inverter operation. Use Value: Supports smooth 1–100% dimming range with stable arc maintenance down to 10% lamp power. |
| Energy-Efficient Retrofit Ballasts | Industrial Fixture Control Modules |
Use Scenario: LED-compatible retrofit tube driver replacing magnetic ballasts in legacy 4-ft fixtures. IC Role / Device Role / Timing Role: System-level power manager integrating PFC and high-frequency inverter control. Use Value: Achieves >90% system efficiency and meets IEC 61000-3-2 Class C harmonic limits. | Use Scenario: High-dust warehouse lighting with extended thermal derating requirements (−25°C to +65°C ambient). IC Role / Device Role / Timing Role: Fault-resilient ballast controller with thermal foldback and auto-restart on overtemperature. Use Value: Ensures uninterrupted operation under sustained high-temperature conditions without manual reset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fluorescent ballast controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IRS2166D2 | Same die, SOIC-16NB package with enhanced ESD rating (4 kV HBM) | Identical functional behavior; preferred where board-level ESD stress exceeds 2 kV | Select IRS2166D2 for new designs targeting IEC 61000-4-2 Level 3 compliance. |
| IRS2168D | Includes integrated 600 V half-bridge but omits PFC controller; requires external PFC IC | Suitable only when discrete PFC stage is already present or preferred for design flexibility | Choose IRS2168D when PFC optimization requires independent loop tuning or higher power density than integrated solution allows. |
Compared with IRS2166D2, the IRS2166DC offers identical functionality but lower ESD robustness; versus IRS2168D, it reduces component count and layout area by integrating PFC control, at the cost of less flexible PFC loop design.
Availability
IRS2166DC is available at Aetrix Electronics and suitable for commercial lighting ballasts, dimmable fluorescent systems, and energy-efficient retrofit modules requiring stable component supply and long-term industrial availability.
Supply support for IRS2166DC 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 certification to ISO 9001 and IATF 16949.
The IRS2166x family targets electronic fluorescent lamp ballast applications, delivering integrated PFC and resonant inverter control to replace multi-IC solutions in cost-sensitive, high-volume lighting systems.
FAQ
What is the maximum recommended lamp power supported by IRS2166DC?
The IRS2166DC is rated for lamp loads up to 80 W total (e.g., two 40 W T8 lamps or one 54 W T5 lamp), assuming proper heatsinking of external MOSFETs and 400 V PFC bus. Higher power requires parallel MOSFETs or external PFC stage redesign.
Does IRS2166DC support analog dimming via 1–10 V interface?
No - IRS2166DC does not include a dedicated 1–10 V dimming input. Dimming is implemented via external circuitry controlling the DIM pin (pin 12), which accepts a 0–2.5 V analog signal to adjust preheat time and lamp current, enabling 10–100% light output range.
Can IRS2166DC operate without a zero-crossing detection signal?
No - ZCD input is mandatory for lamp ignition and stable run-mode operation. Without valid ZCD pulses, the IC disables gate outputs after preheat and enters fault latch mode. The ZCD signal must be derived from the resonant tank voltage via resistive divider.
What is the purpose of the VS pin, and how should it be connected?
The VS pin provides the floating source reference for the high-side gate driver. It must be connected directly to the half-bridge midpoint (drain of low-side MOSFET/source of high-side MOSFET) through a low-inductance path. Incorrect routing causes shoot-through or driver failure due to voltage transient misalignment.
IRS2166DC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- -
- Frequency:
- -
- Voltage - Supply:
- -
- Current - Supply:
- -
- Current - Output Source/Sink:
- -
- Dimming:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
IRS2166DC FAQ
1.How can I place an order for IRS2166DC through Aetrix?
Please submit a Request for Quotation (RFQ) for IRS2166DC 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 IRS2166DC reliable?
The price and inventory of IRS2166DC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRS2166DC is usually 5 days.
3.What payment methods are accepted for IRS2166DC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRS2166DC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IRS2166DC?
IRS2166DC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IRS2166DC 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 IRS2166DC?
For technical support, including IRS2166DC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRS2166DC requirements.
6.How does Aetrix verify that IRS2166DC is sourced from the original manufacturer or authorized distributors?
All IRS2166DC 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 IRS2166DC meets industry standards.
7.What is the process for return or replacement of IRS2166DC?
All IRS2166DC units undergo pre-shipment inspection (PSI). If there is an issue with IRS2166DC, 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 IRS2166DC part is unused and in its original packaging.
Return procedure for IRS2166DC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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