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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Lighting, Ballast Controllers

Infineon Technologies IRS2168DPBF

Name: IRS2168DPBF
Brand: Infineon Technologies
SKU: IRS2168DPBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRS2168DPBF

Manufacturer:: Infineon Technologies

Category:: Lighting, Ballast Controllers

Package:: 16-DIP (0.300", 7.62mm)

Datasheet:: IRS2168DPBF.pdf

Description:: IC PFC/BALLAST CTR 46.5KHZ 16DIP

Quantity:: RFQ Add To RFQ list

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Inventory:4,642

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Product details

Overview

IRS2168DPBF from Infineon Technologies is a fully integrated 600 V ballast control IC combining critical-conduction-mode PFC, programmable preheat/ignition/run timing, closed-loop ignition current regulation, and half-bridge gate driving in a single SOIC-16 package. It drives fluorescent lamps in electronic ballasts with universal AC input, delivers <5% THD, regulates DC bus to 4.0 V ±0.1 V, and implements 65-event fault counting for noise-immune lamp strike monitoring.

For engineers reviewing the IRS2168DPBF datasheet, IRS2168DPBF pinout, IRS2168DPBF application, or IRS2168DPBF equivalent, this device supports design of high-reliability, RoHS-compliant fluorescent lamp ballasts requiring programmable preheat time (via RPH), ignition ramp control (via VCO discharge current of 0.6 mA), end-of-life detection (via EOL window comparator), and robust fault recovery with automatic restart.

Technical Context

The IRS2168DPBF integrates three functional blocks: a boost-type PFC controller operating in critical conduction mode with 4.0 V VBUS reference and 1.2 V OC overcurrent threshold; a ballast oscillator with preheat frequency (81–89 kHz), run frequency (42.5–46.5 kHz), and 1.6 µs fixed HO/LO deadtime; and a dual OTA-based regulation system-one for PFC error amplification (COMP pin, ±30 µA sourcing/sinking), another for end-of-life detection (EOL pin, 3.0 V latched threshold).

Its protection architecture includes a 65-event CS fault counter, ZX pin zero-crossing detection with 2.0 V threshold and 300 mV hysteresis, SD/EOL pin with dual-mode shutdown (non-latched >5.2 V, latched 3.0 V), and internal bootstrap MOSFET enabling self-biased high-side drive without external diode/capacitor.

Key Specifications

Parameter	Value and Actual Design Meaning
PFC Mode	Critical-conduction mode: enables high power factor (>0.98) and low THD (<5%) with universal AC input compatibility.
Half-Bridge Frequency Range	Preheat: 81–89 kHz; Run: 42.5–46.5 kHz - programmable via external resistors for lamp type optimization.
V_CC Clamp Voltage	15.6 V Zener clamp: protects internal circuitry when driven by unregulated supplies; requires ≥10 mA bias current.
CS Fault Counter	65-event counter: provides immunity to transient overcurrents during lamp ignition while detecting true filament failure.
Ignition Regulation	Closed-loop current control via VCO discharge (0.6 mA sink): ensures consistent lamp ignition across line/load variations.
EOL Detection	Window comparator (2.85–3.15 V rising, 0.9–1.1 V falling): detects lamp aging via cathode emission degradation.
Bootstrap FET	Integrated: eliminates external bootstrap diode and reduces BOM count; supports VB up to 625 V.

Pinout & Package

IRS2168DPBF is housed in a 16-lead SOIC package with standard JEDEC MS-012AC footprint, 1.27 mm pitch, and 10.3 mm × 7.5 mm body size. Thermal resistance R_θJA is 86 °C/W under still-air conditions.

Pin/Terminal	Circuit Role	Design Meaning
COM	Ground reference	Common return for all low-side circuits; must be connected to power ground with low-inductance path.
VCC	Logic supply input	Accepts 10–16 V; internally clamped at 15.6 V; powers control logic and gate drivers.
VB	High-side floating supply	Connects to bootstrap capacitor top; rated up to 625 V; powers HO driver stage.
VS	High-side source reference	Reference for HO output; tracks half-bridge switch node; dV/dt rating ±50 V/ns.
HO	High-side gate driver output	Drives external high-side MOSFET gate; 180 mA source / 260 mA sink capability.
LO	Low-side gate driver output	Drives external low-side MOSFET gate; fixed 1.6 µs deadtime with HO prevents shoot-through.
PFC	PFC gate driver output	Drives boost MOSFET gate; shares same drive strength specs as HO/LO outputs.
CPH	Capacitor preheat timer	Charges via R_CPH; thresholds at 9.3 V (end-of-preheat) and 4.9 V (start-of-ignition) define timing phases.
VCO	Voltage-controlled oscillator	Open-drain output; discharged at 0.6 mA during ignition to ramp frequency from f_PH to f_RUN.
FMIN	Minimum frequency programming	Resistor-connected pin sets lowest oscillator frequency; typical voltage 2.0 V.
COMP	PFC error amplifier output	OTA output (±30 µA); regulates VBUS to 4.0 V; swing range 0.4–12.5 V.
CS	Current sense input	Monitors half-bridge current; 1.2 V threshold triggers 65-event fault counter for reliable lamp strike detection.
SD/EOL	Shutdown / End-of-Life input	Dual-function pin: >5.2 V = non-latched lamp removal fault; 3.0 V window = latched EOL detection.
ZX	Zero-crossing input	2.0 V threshold with 300 mV hysteresis; synchronizes PFC switching to AC line zero crossings.
OC	PFC overcurrent input	1.2 V threshold initiates PFC shutdown; blanked for 300 ns after each switching event.
VBUS	PFC bus voltage sense	4.0 V internal reference; monitors DC bus for regulation and undervoltage reset (3.0 V threshold).

Key Features

Feature	Design Value
Critical-conduction-mode PFC	Enables >0.98 PF and <5% THD with universal 90–264 V_AC input without input inductor saturation concerns.
Programmable preheat time	Set via R_CPH and C_PH: ensures cathode heating before ignition, extending lamp life and reducing flicker.
Closed-loop ignition regulation	VCO discharge current (0.6 mA) dynamically adjusts frequency ramp rate to maintain stable arc initiation across lamp aging.
Integrated bootstrap MOSFET	Eliminates external bootstrap diode and associated PCB area; supports high-voltage operation up to 600 V bridge.
65-event CS fault counter	Rejects false trips from ignition transients while reliably detecting open-filament or no-strike failures.

Applications

Commercial Lighting Ballast

Industrial Fluorescent Fixture

Use Scenario: Electronic ballast for T5/T8 linear fluorescent lamps in office ceiling fixtures with universal AC input.

IC Role / Device Role / Timing Role: Primary ballast controller managing PFC regulation, preheat timing (1.2 s), ignition ramp (200 ms), and run-frequency stabilization (44.5 kHz).

Use Value: Achieves >90% system efficiency, <5% THD, and automatic lamp replacement detection via EOL window comparator.

Use Scenario: High-reliability ballast in factory floor lighting where voltage sags and lamp aging are common.

IC Role / Device Role / Timing Role: Fault-tolerant controller executing brown-out recovery, 65-event CS fault counting, and auto-restart on lamp removal.

Use Value: Reduces maintenance downtime by latching EOL faults only after confirmed cathode degradation, not transient events.

Medical Equipment Lighting

UV Sterilization Lamp Driver

Use Scenario: Flicker-free, low-EMI lighting for surgical suites requiring Class B EMC compliance.

IC Role / Device Role / Timing Role: Precision oscillator with fixed 1.6 µs deadtime and critical-conduction PFC to minimize conducted emissions.

Use Value: Meets CISPR 11 Class B limits without additional filtering due to ultra-low THD and controlled dV/dt.

Use Scenario: Mercury-free UV-C fluorescent lamp driver in portable sterilization devices.

IC Role / Device Role / Timing Role: Ignition regulator ensuring reliable cold-start of high-pressure UV lamps using closed-loop VCO ramp control.

Use Value: Guarantees lamp strike within 300 ms across battery voltage drop (10–16 V VCC range) and temperature (-25°C to +125°C).

Equivalent & Alternatives

The following parts are listed as comparable options for similar fluorescent ballast control applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
IRS2166DPBF	Lacks closed-loop ignition regulation, EOL window comparator, and 65-event CS counter; uses open-loop frequency ramp.	Suitable for cost-sensitive, non-critical ballasts without lamp life monitoring.	Select when EOL detection and ignition reliability are not required; lower BOM cost but reduced fault coverage.
UCC3305D	No integrated PFC controller; requires external PFC IC; lacks VBUS regulation and ZX zero-crossing input.	Used in hybrid designs where analog PFC and digital ballast control are separated.	Choose when modular architecture is preferred; adds complexity but allows independent PFC tuning.

Compared with IRS2166DPBF and UCC3305D, the IRS2168DPBF delivers superior lamp ignition consistency via VCO-based closed-loop control, extends system lifetime through accurate EOL detection, and simplifies layout with integrated bootstrap FET and unified protection logic-making it optimal for high-integrity commercial and industrial ballasts.

Availability

IRS2168DPBF is available at Aetrix Electronics and suitable for commercial lighting ballasts, industrial fluorescent fixtures, medical equipment lighting, and UV sterilization lamp drivers requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for IRS2168DPBF 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 energy-efficient lighting solutions.

The IRS2168DPBF belongs to Infineon's Intelligent Power Switch (IPS) product line, designed specifically for single-chip fluorescent lamp ballast control with integrated PFC, ignition regulation, and fault resilience for universal-input lighting systems.

FAQ

What is the function of the CPH pin on the IRS2168DPBF?

The CPH pin serves as the preheat timing capacitor node. It charges through an external resistor (R_CPH) during preheat mode and transitions between defined voltage thresholds-9.3 V signals end-of-preheat, 4.9 V triggers start-of-ignition, and 9.3 V again confirms end-of-ignition-enabling precise phase sequencing without microcontroller intervention.

How does the IRS2168DPBF implement closed-loop ignition regulation?

During ignition mode, the IRS2168DPBF sinks a constant 0.6 mA current from the VCO pin, discharging its external capacitor to linearly ramp the oscillator frequency from preheat (85 kHz) to run (44.5 kHz). This current-controlled ramp maintains consistent arc formation regardless of lamp impedance drift or line voltage variation.

Can the IRS2168DPBF operate without an external bootstrap diode?

Yes. The IRS2168DPBF integrates a bootstrap MOSFET that replaces the traditional external diode. When LO switches on, the internal FET connects VCC to the bootstrap capacitor, charging it to ~13.4 V. This eliminates diode forward-drop loss and PCB space, supporting reliable high-side drive up to 600 V bridge voltage.

What protection features prevent false triggering during lamp ignition?

The IRS2168DPBF employs three coordinated protections: 300 ns blanking on the OC pin after each switching edge, a 65-event fault counter on the CS pin requiring sustained overcurrent, and hysteresis (300 mV) on the ZX zero-crossing comparator-all validated in the datasheet to reject ignition transients while detecting true filament open-circuit faults.

IRS2168DPBF 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:: 42.5kHz ~ 46.5kHz

Voltage - Supply:: 11.5V ~ 16.6V

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

IRS2168DPBF FAQ

1.How can I place an order for IRS2168DPBF through Aetrix?

Please submit a Request for Quotation (RFQ) for IRS2168DPBF 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 IRS2168DPBF reliable?

The price and inventory of IRS2168DPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRS2168DPBF is usually 5 days.

3.What payment methods are accepted for IRS2168DPBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRS2168DPBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRS2168DPBF?

IRS2168DPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRS2168DPBF 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 IRS2168DPBF?

For technical support, including IRS2168DPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRS2168DPBF requirements.

6.How does Aetrix verify that IRS2168DPBF is sourced from the original manufacturer or authorized distributors?

All IRS2168DPBF 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 IRS2168DPBF meets industry standards.

7.What is the process for return or replacement of IRS2168DPBF?

All IRS2168DPBF units undergo pre-shipment inspection (PSI). If there is an issue with IRS2168DPBF, 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 IRS2168DPBF part is unused and in its original packaging.

Return procedure for IRS2168DPBF:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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