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Infineon Technologies IRS2168DSTRPBF
- Part No.:
- IRS2168DSTRPBF
- Manufacturer:
- Infineon Technologies
- Category:
- Lighting, Ballast Controllers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
IRS2168DSTRPBF.pdf
- Description:
- IC PFC/BALLAS CTR 46.5KHZ 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,476
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Product details
Overview
IRS2168DSTRPBF from Infineon Technologies is a fully integrated 600 V ballast control IC combining critical-conduction-mode PFC, fluorescent lamp preheat/ignition/run control, and half-bridge gate driving in a single SOIC-16 package. It delivers closed-loop ignition current regulation, programmable preheat time (via RPH), run frequency (44.5 kHz typ), and end-of-life protection with internal 65-event fault counter - deployed in electronic ballasts for T5/T8 linear and compact fluorescent lamps.
For engineers reviewing the IRS2168DSTRPBF datasheet, IRS2168DSTRPBF pinout, IRS2168DSTRPBF application, or IRS2168DSTRPBF equivalent, key selection criteria include VCO-controlled frequency ramping during ignition, dual-threshold SD/EOL latched shutdown, bootstrap MOSFET integration, 1.6 µs HO/LO deadtime, and micropower startup (250 µA).
Technical Context
The IRS2168DSTRPBF implements a state-machine-driven ballast controller with five operational modes (UVLO, PREHEAT, IGNITION, RUN, FAULT) triggered by CPH voltage thresholds and CS fault events. Its PFC stage uses an OTA-based error amplifier (COMP pin) with 4.0 V internal VBUS reference and 4.3 V overvoltage threshold, operating in critical conduction mode for >0.98 PF and <10% THD.
Ignition regulation relies on open-drain VCO pin discharge (0.6 mA typ) synchronized to CS overcurrent detection, while lamp removal detection uses SD/EOL pin with 5.2 V rising threshold and auto-restart capability. The internal bootstrap FET enables self-biased high-side drive without external diode/capacitor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| PFC Mode | Critical-conduction boost topology enabling high power factor (>0.98) and low THD (<10%) with universal AC input |
| Half-Bridge Frequency | Preheat: 85 kHz typ; Run: 44.5 kHz typ - programmable via RFMIN and RPH resistors |
| Ignition Regulation | Closed-loop VCO discharge (0.6 mA) controlled by CS pin current sensing - ensures consistent lamp strike across line/load variations |
| Fault Protection | 65-event CS fault counter, EOL window comparator (3.0 V/1.0 V thresholds), and latchable SD/EOL shutdown |
| Startup Current | 250 µA micropower UVLO entry - reduces standby loss and enables direct rectified-line startup |
| Bootstrap Integration | Internal MOSFET + 15.6 V Zener clamp on VCC - eliminates external bootstrap diode and simplifies PCB layout |
| Deadtime | Fixed 1.6 µs between HO and LO outputs - prevents shoot-through in half-bridge power stage |
Pinout & Package
IRS2168DSTRPBF is housed in a 16-lead SOIC package (body width 3.9 mm, thermal resistance RθJA = 86 °C/W), optimized for surface-mount assembly and thermal management in enclosed ballast housings.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| COM | Power ground reference | Common return for all low-side circuits and current-sense inputs (CS, OC) |
| VCC | Logic supply input | Powered via bootstrap or auxiliary winding; clamped at 15.6 V internally - no external regulator needed |
| VB | High-side floating supply | Connects to bootstrap capacitor top node; rated to 625 V max - supports 600 V bridge operation |
| VS | High-side source reference | References HO output; offset up to 600 V from COM - enables level-shifted gate drive |
| HO | High-side gate driver output | Drives upper MOSFET gate; 180 mA source / 260 mA sink - directly interfaces standard 600 V MOSFETs |
| LO | Low-side gate driver output | Drives lower MOSFET gate; matched rise/fall timing with HO - ensures symmetrical half-bridge switching |
| CPH | Charge-pump timing capacitor node | Integrates preheat/ignition timing; thresholds at 4.9 V (start ignition) and 9.3 V (end preheat/run entry) |
| VCO | Voltage-controlled oscillator output | Open-drain node regulating ignition ramp; sinks 0.6 mA during ignition - sets frequency sweep profile |
| CS | Half-bridge current sense input | Monitors low-side current for overcurrent protection and ignition regulation; 1.2 V threshold triggers fault counter |
| SD/EOL | Shutdown/end-of-life input | Latched shutdown at 5.2 V (lamp removal); EOL detection via 3.0 V/1.0 V window comparator |
| COMP | PFC error amplifier output | OTA output driving PFC MOSFET gate; 12.5 V swing enables full enhancement of external PFC switch |
| ZX | Zero-cross detection input | 2.0 V threshold with 300 mV hysteresis - synchronizes PFC switching to AC line zero crossings |
| OC | PFC overcurrent sense input | 1.2 V threshold with 300 ns blanking - protects PFC stage during startup transients |
| VBUS | PFC bus voltage feedback | 4.0 V internal reference regulates DC bus; 4.3 V OVP threshold disables PFC on overvoltage |
| FMIN | Minimum frequency programming | 10–300 kΩ resistor sets lowest oscillator frequency - defines preheat floor before ramp |
Key Features
| Feature | Design Value |
|---|---|
| Critical-conduction PFC with OTA error amplifier | Enables >0.98 PF and <10% THD using only ZX zero-cross and VBUS feedback - no external multiplier required |
| Programmable preheat time and frequency | RPH resistor sets 85 kHz preheat frequency and duration - optimizes filament heating for lamp life and reliability |
| Closed-loop ignition current regulation | VCO discharge current (0.6 mA) modulates frequency ramp based on real-time CS feedback - ensures strike under varying temperature/lamp aging |
| Integrated bootstrap MOSFET | Eliminates external bootstrap diode and reduces BOM count - improves reliability and eases layout in space-constrained ballasts |
| 65-event fault counter with noise immunity | Counts transient CS overcurrent events over time - prevents false shutdown from EMI or line spikes |
| Lamp removal detection with auto-restart | SD/EOL pin detects open-circuit lamp (5.2 V threshold) and resets after power cycle - supports hot-replace functionality |
Applications
| Linear Fluorescent Lamp Ballast | Compact Fluorescent Lamp (CFL) Driver |
|---|---|
Use Scenario: Electronic ballast for T8/T5 4-ft linear fluorescent tubes in commercial lighting fixtures. IC Role / Device Role / Timing Role: Primary controller managing PFC, preheat (85 kHz), ignition ramp, and 44.5 kHz run mode - coordinates timing across all stages via CPH voltage ramp. Use Value: Enables compliance with IEC 61000-3-2 Class C harmonic limits and extends lamp life via precise filament preheat control. | Use Scenario: Integrated CFL driver module in self-ballasted screw-base lamps (e.g., PL-S, PL-C). IC Role / Device Role / Timing Role: Single-chip solution providing PFC regulation, 85 kHz preheat, and closed-loop ignition - operates from rectified 230 VAC with micropower startup. Use Value: Reduces component count by 30% vs. discrete controllers and achieves >90 lm/W efficacy through regulated ignition current. |
| Multi-Lamp Universal Input Ballast | Industrial Fluorescent Fixture with EOL Monitoring |
Use Scenario: 2- or 4-lamp ballast supporting 90–305 VAC input for global deployment. IC Role / Device Role / Timing Role: Manages wide-range PFC and synchronized half-bridge drive for multiple parallel lamps - uses VBUS feedback for DC bus regulation across input range. Use Value: Eliminates need for input-voltage-select jumpers and maintains THD <10% across full universal input range. | Use Scenario: High-reliability industrial fixture requiring lamp end-of-life detection and automatic shutdown. IC Role / Device Role / Timing Role: Implements EOL window comparator (3.0 V/1.0 V) and latched SD/EOL shutdown - monitors lamp cathode degradation via impedance shift. Use Value: Prevents catastrophic lamp failure (e.g., arc tube rupture) and enables predictive maintenance alerts in building management systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fluorescent ballast control applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IRS2166DSTRPBF | Lacks closed-loop ignition regulation, EOL window comparator, and internal bootstrap FET; preheat frequency fixed at 85 kHz | Suitable for cost-sensitive, non-EOL-monitored ballasts where lamp strike consistency is less critical | Select when design prioritizes BOM cost over ignition reliability and lamp life monitoring |
| UCC28600DR | PSR flyback controller with PFC; no half-bridge driver or lamp-specific timing states; requires external gate drivers | Targets LED drivers or low-power AC/DC converters - not designed for fluorescent lamp sequencing or ignition control | Select only for LED retrofit applications; not a functional substitute for fluorescent ballast control |
Compared with IRS2166DSTRPBF, the IRS2168DSTRPBF adds closed-loop ignition regulation and EOL monitoring for improved lamp reliability; versus UCC28600DR, it provides integrated half-bridge drive and lamp-specific state machine logic - making it the only direct replacement for legacy fluorescent ballast designs.
Availability
IRS2168DSTRPBF is available at Aetrix Electronics and suitable for linear fluorescent lamp ballasts, compact fluorescent lamp (CFL) drivers, and multi-lamp universal-input ballasts requiring stable component supply and long-term lifecycle support.
Supply support for IRS2168DSTRPBF 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 IRS2168DSTRPBF belongs to Infineon's fluorescent ballast control IC product line, engineered specifically for high-reliability electronic ballasts requiring integrated PFC, programmable lamp sequencing, and robust fault protection.
FAQ
What is the function of the CPH pin in IRS2168DSTRPBF?
The CPH pin serves as the charge-pump timing node that controls state transitions: it ramps during preheat (triggering ignition at 4.9 V), peaks at end-of-preheat (9.3 V), and discharges during run mode. Its voltage thresholds define the exact timing boundaries between preheat, ignition, and run phases - enabling precise lamp filament conditioning and strike control without external timers.
How does the IRS2168DSTRPBF implement closed-loop ignition regulation?
During ignition mode, the VCO pin acts as a current-sink node (0.6 mA typ) whose discharge rate is modulated by CS pin current. When CS exceeds 1.2 V, the VCO voltage drops, lowering oscillator frequency to increase lamp current; this real-time feedback loop maintains constant ignition current regardless of lamp aging or line voltage variation - ensuring reliable strike across lifetime.
Can IRS2168DSTRPBF operate without an external bootstrap diode?
Yes. The IRS2168DSTRPBF integrates a bootstrap MOSFET between VB and VCC pins, eliminating the need for an external bootstrap diode. When VB rises above VCC + 13.4 V, the internal FET turns on to recharge the bootstrap capacitor - reducing component count, improving reliability, and simplifying PCB layout in high-density ballast designs.
What protection features prevent false triggering during EMI-heavy environments?
The IRS2168DSTRPBF employs three EMI-hardened protections: (1) 300 ns blanking on OC pin during switching edges, (2) 65-event fault counter requiring repeated CS overcurrents before shutdown, and (3) 300 mV hysteresis on ZX zero-cross comparator. These features collectively suppress false trips from conducted noise, dV/dt coupling, or transient line disturbances common in industrial lighting installations.
IRS2168DSTRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
IRS2168DSTRPBF FAQ
1.How can I place an order for IRS2168DSTRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for IRS2168DSTRPBF 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 IRS2168DSTRPBF reliable?
The price and inventory of IRS2168DSTRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRS2168DSTRPBF is usually 5 days.
3.What payment methods are accepted for IRS2168DSTRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRS2168DSTRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IRS2168DSTRPBF?
IRS2168DSTRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IRS2168DSTRPBF 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 IRS2168DSTRPBF?
For technical support, including IRS2168DSTRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRS2168DSTRPBF requirements.
6.How does Aetrix verify that IRS2168DSTRPBF is sourced from the original manufacturer or authorized distributors?
All IRS2168DSTRPBF 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 IRS2168DSTRPBF meets industry standards.
7.What is the process for return or replacement of IRS2168DSTRPBF?
All IRS2168DSTRPBF units undergo pre-shipment inspection (PSI). If there is an issue with IRS2168DSTRPBF, 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 IRS2168DSTRPBF part is unused and in its original packaging.
Return procedure for IRS2168DSTRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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