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

Infineon Technologies IRS2552DPBF

Name: IRS2552DPBF
Brand: Infineon Technologies
SKU: IRS2552DPBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRS2552DPBF

Manufacturer:: Infineon Technologies

Category:: Lighting, Ballast Controllers

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

Datasheet:: IRS2552DPBF.pdf

Description:: IC CCFL/EEFL CNTRL 69KHZ 16DIP

Quantity:: RFQ Add To RFQ list

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Inventory:3,675

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Product details

Overview

IRS2552DPBF from Infineon Technologies (formerly International Rectifier) is a high-voltage half-bridge CCFL/EEFL ballast controller IC with integrated gate drivers, programmable ignition frequency (36.5–71 kHz), 500 ns–2 µs adjustable deadtime, and analog/PWM dimming support. It drives two external IGBTs or MOSFETs in backlight inverters for LCD monitors and industrial displays.

For engineers reviewing the IRS2552DPBF datasheet, IRS2552DPBF pinout, IRS2552DPBF application, or IRS2552DPBF equivalent, key selection criteria include V_OFFSET = 600 V, IO⁺/IO⁻ = 300 mA/450 mA, latch-immune HVIC architecture, 15.6 V VCC clamp, and micro-power startup current of 300 µA at undervoltage.

Technical Context

The IRS2552DPBF integrates a self-contained oscillator with CT/CR timing network control, enabling independent programming of ignition and run frequencies. Its front-end logic supports burst-mode dimming with soft-start on each burst and latched open-circuit protection triggered at 0.6 V CS threshold.

High-side driver operation relies on bootstrap FET functionality with 13.5 V turn-on VB and 55 mA peak capacitor charge current. Undervoltage lockout features 1 V hysteresis (9.5 V rising / 8.5 V falling) and noise immunity via low di/dt gate drive and CMOS latch immunity on all pins.

Key Specifications

Parameter	Value and Actual Design Meaning
V_OFFSET	600 V - Enables direct high-side switching in half-bridge topologies without level-shifting circuitry
IO⁺/IO⁻	300 mA / 450 mA - Sufficient peak current to directly drive gate capacitance of discrete IGBTs/MOSFETs
f_OSC Range	36.5–71 kHz - Programmable via R_MIN/R_MAX resistors for lamp ignition and steady-state operation
V_CLAMP	15.6 V - Internal zener clamps VCC supply, requiring external current limiting to avoid thermal stress
Deadtime	500 ns–2 µs - Adjustable via R_DT/C_DT to prevent shoot-through in half-bridge power stage
UVLO Hysteresis	1 V - Ensures clean power-up/power-down sequencing without oscillation near threshold
Startup I_Q	300 µA - Allows use of high-value startup resistor for low standby power in battery-backed systems

Pinout & Package

IRS2552DPBF is available in 16-lead PDIP and 16-lead narrow-body SOIC packages. Both variants share identical pin functions and thermal characteristics (R_ΘJA = 70 °C/W for PDIP, 82 °C/W for SOIC).

Pin/Terminal	Circuit Role	Design Meaning
COM	Power ground reference	Common return for low-side driver, CS sensing, and all logic inputs
VCC	Logic supply input	15.6 V clamped internal supply; requires external current-limited source
HO	High-side gate driver output	Drives gate of high-side IGBT/MOSFET referenced to floating VS node
LO	Low-side gate driver output	Drives gate of low-side device referenced to COM
VS	Floating high-side return	Connects to source/emitter of high-side switch; withstands up to 600 V offset
CT	Oscillator timing capacitor	Charged/discharged by internal current source to set f_OSC and deadtime
CR	Ignition timing capacitor	Sets ignition duration independently from run frequency
DIM	Analog dimming input	0–5 V linear control of lamp current; compatible with DAC or potentiometer
SD	Shutdown enable input	Active-high; pulls HO/LO low when >2.0 V applied
CS	Lamp current sense input	Monitors current through external sense resistor; triggers fault at 0.6 V

Key Features

Feature	Design Value
Integrated bootstrap FET	Provides 55 mA peak charging current to VB rail without external diode/capacitor
Lamp current regulation	Uses CS pin feedback with 0.6 V threshold to maintain stable lamp brightness across line/load variation
Burst dimming with per-burst soft start	Eliminates audible noise and lamp flicker during low-duty-cycle dimming modes
Latched open-circuit protection	Halts switching and holds outputs low until reset via VCC cycle or SD pin toggle
ESD and latch-up immunity	Class 3A HBM ESD rating and Class I latch-up compliance ensure robustness in manufacturing and field environments

Applications

LCD Monitor Backlight

Industrial Panel Display

Use Scenario: Driving dual CCFL lamps in 15–24 inch desktop LCD monitors with analog brightness control.

IC Role / Device Role / Timing Role: Half-bridge ballast controller managing ignition, run frequency, and lamp current regulation.

Use Value: Eliminates need for external oscillator and protection comparators, reducing BOM count by ≥4 components.

Use Scenario: Powering EEFL backlights in ruggedized HMI panels operating at extended temperature range (−40°C to +85°C).

IC Role / Device Role / Timing Role: High-voltage gate driver with latch-immune logic ensuring reliable startup under voltage transients.

Use Value: 600 V V_OFFSET and −40°C to +125°C operating range support industrial-grade reliability without derating.

Medical Imaging Display

Avionics Cabin Lighting

Use Scenario: Controlling cold-cathode fluorescent lamps in diagnostic ultrasound display subsystems requiring flicker-free dimming.

IC Role / Device Role / Timing Role: Burst-mode dimming controller with per-burst soft start to suppress EMI and acoustic noise.

Use Value: Meets IEC 60601-1 EMI limits and eliminates 20–200 Hz audible artifacts during brightness adjustment.

Use Scenario: Regulating EEFL-based cabin lighting in commercial aircraft where weight and failure rate are critical.

IC Role / Device Role / Timing Role: Fault-tolerant ballast controller with latched open-circuit protection and shutdown input.

Use Value: Single-point failure detection and hard shutdown prevent uncontrolled lamp operation in safety-critical zones.

Equivalent & Alternatives

The following parts are listed as comparable options for similar CCFL/EEFL ballast controller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
IRS2553DPBF	Higher V_OFFSET (650 V), no CR/CD pins, fixed 500 ns deadtime	Lacks programmable ignition timing; suited for simpler single-lamp designs	Select when ignition time is not required and higher voltage margin is needed
UCC3972D	Lower V_OFFSET (450 V), no integrated bootstrap FET, requires external high-side driver	Needs external level shifter and bootstrap diode; less integrated than IRS2552DPBF	Select when cost sensitivity outweighs integration benefits and voltage stress is <450 V

Compared with IRS2553DPBF and UCC3972D, the IRS2552DPBF uniquely combines programmable ignition timing, integrated bootstrap FET, and 600 V offset-enabling compact, robust multi-lamp CCFL/EEFL inverters without external timing or level-shifting components.

Availability

IRS2552DPBF is available at Aetrix Electronics and suitable for LCD monitor backlighting, industrial HMI displays, medical imaging equipment, and avionics cabin lighting requiring stable component supply and long-term manufacturability.

Supply support for IRS2552DPBF 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 acquired International Rectifier in 2015 and continues its legacy of high-voltage analog and power IC design with focus on energy efficiency and system integration.

The IRS2552DPBF belongs to Infineon's CCFL/EEFL Ballast Controller product line, engineered specifically for compact, high-reliability cold-cathode fluorescent and external electrode fluorescent lamp inverters in professional display systems.

FAQ

What is the maximum allowable dV/dt on the VS pin?

The IRS2552DPBF specifies ±50 V/ns as the absolute maximum allowable slew rate on the VS pin. Exceeding this limit risks false triggering of the high-side level shifter or internal logic errors. Layout best practices include minimizing loop area between VS and COM, using low-inductance ceramic capacitors, and avoiding sharp-edged gate drive waveforms in the power stage.

Can the DIM pin accept PWM signals directly?

Yes-the DIM pin accepts both DC analog voltage (0–5 V) and PWM signals up to 1 kHz. Internal filtering averages the PWM duty cycle into an equivalent analog level. For optimal dimming linearity, use PWM frequencies above 200 Hz to avoid visible flicker and below 1 kHz to prevent interference with oscillator timing.

How does the latched open-circuit protection reset?

The latched open-circuit fault resets only upon removal and reapplication of VCC power or by toggling the SD pin from high to low and back to high. The latch remains active until one of these conditions occurs-no automatic recovery is provided to prevent unsafe lamp re-ignition after open-circuit events.

Is external bootstrap diode required when using the integrated bootstrap FET?

No external bootstrap diode is required. The IRS2552DPBF integrates a dedicated bootstrap FET that charges the VB capacitor during LO conduction. External components needed are only the bootstrap capacitor (typically 0.1 µF ceramic) and optional series resistor for inrush limiting-no diode is used or recommended.

IRS2552DPBF Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

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

Packaging:: Tube

Product Status:: Obsolete

Type:: CCFL/EEFL Controller

Frequency:: 39kHz ~ 69kHz

Voltage - Supply:: 11.5V ~ 16.6V

Current - Supply:: 10 mA

Current - Output Source/Sink:: -

Dimming:: Yes

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: 16-DIP

IRS2552DPBF FAQ

1.How can I place an order for IRS2552DPBF through Aetrix?

Please submit a Request for Quotation (RFQ) for IRS2552DPBF 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 IRS2552DPBF reliable?

The price and inventory of IRS2552DPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRS2552DPBF is usually 5 days.

3.What payment methods are accepted for IRS2552DPBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRS2552DPBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRS2552DPBF?

IRS2552DPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRS2552DPBF 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 IRS2552DPBF?

For technical support, including IRS2552DPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRS2552DPBF requirements.

6.How does Aetrix verify that IRS2552DPBF is sourced from the original manufacturer or authorized distributors?

All IRS2552DPBF 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 IRS2552DPBF meets industry standards.

7.What is the process for return or replacement of IRS2552DPBF?

All IRS2552DPBF units undergo pre-shipment inspection (PSI). If there is an issue with IRS2552DPBF, 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 IRS2552DPBF part is unused and in its original packaging.

Return procedure for IRS2552DPBF:

1.Submit a request within 90 days.

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

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