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

Infineon Technologies IRS2552DSPBF

Name: IRS2552DSPBF
Brand: Infineon Technologies
SKU: IRS2552DSPBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRS2552DSPBF

Manufacturer:: Infineon Technologies

Category:: Lighting, Ballast Controllers

Package:: 16-SOIC (0.154", 3.90mm Width)

Datasheet:: IRS2552DSPBF.pdf

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

Quantity:: RFQ Add To RFQ list

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Inventory:1,922

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Product details

Overview

IRS2552DSPBF 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 programmable deadtime, and analog dimming (0–5 V). It drives up to two external IGBTs or MOSFETs in backlight inverters for LCD monitors and industrial displays.

For engineers reviewing the IRS2552DSPBF datasheet, IRS2552DSPBF pinout, IRS2552DSPBF application, or IRS2552DSPBF equivalent, key selection considerations include its 600 V offset capability, latch-immune HVIC architecture, micro-power startup (≤350 µA), VCC clamp at 15.6 V, and dual-mode operation (ignition/burst dimming).

Technical Context

The IRS2552DSPBF integrates a self-oscillating half-bridge driver with independent high-side (VS-referenced) and low-side (COM-referenced) outputs, supporting bootstrap-based high-side drive. Its oscillator uses an external CT capacitor and MIN/MAX resistors to set frequency range and ignition timing.

Protection logic includes latched open-circuit detection via CS pin (0.6 V threshold), shutdown activation via SD pin (2.0 V threshold) or CD pin (5.0 V threshold), and undervoltage lockout on both VCC (9.5–11.5 V hysteresis) and VBS (6.0–8.5 V).

Key Specifications

Parameter	Value and Actual Design Meaning
V_OFFSET	600 V - Enables direct connection to high-side floating node in half-bridge topologies without level-shifting circuitry
f_OSC Range	36.5–71 kHz - Programmable via R_MIN/R_MAX and C_T for lamp ignition and steady-state operation
Deadtime	500 ns–2 µs - Adjustable via R_DT/C_DT to prevent shoot-through in external power switches
I_O+/I_O−	300 mA / 450 mA - Sufficient gate drive current for fast switching of IGBTs or MOSFETs up to ~1 A load
V_CLAMP	15.6 V - Internal zener clamp protects VCC pin; requires current-limited supply to avoid thermal stress
Dimming Input	0–5 V analog - Linear control of lamp brightness without external PWM generation circuitry
UVLO Hysteresis	~1 V - Ensures clean startup/shutdown sequencing and prevents oscillation near threshold

Pinout & Package

IRS2552DSPBF is available in 16-lead narrow-body SOIC (surface-mount) and PDIP (through-hole) packages. Both variants share identical pin functions and layout.

Pin/Terminal	Circuit Role	Design Meaning
COM	Ground reference	Common return for low-side driver, analog inputs, and internal logic; must be low-inductance path
VCC	Logic supply input	Powered via external 12–15 V source; internally clamped at 15.6 V; supplies all logic and gate buffers
HO	High-side gate output	Drives gate of high-side switch referenced to VS; capable of 300 mA source/450 mA sink
LO	Low-side gate output	Drives gate of low-side switch referenced to COM; same drive strength as HO
VS	Floating supply reference	Return node for high-side driver; must withstand up to 600 V offset from COM
CT	Oscillator timing	Connects to external capacitor (330 pF–1 nF) to set base frequency and ramp waveform
DIM	Analog dimming input	0–5 V voltage controls lamp current linearly; no external filtering required
SD	Shutdown enable	Logic-high (>2.0 V) disables outputs and enters latched fault state until power cycle
CS	Lamp current sense	Monitors current through external sense resistor; triggers open-lamp protection at 0.6 V
CR/CD	Ignition timing	CR sets ignition time constant; CD enables auto-shutdown after failed ignition attempt

Key Features

Feature	Design Value
Integrated bootstrap FET	On-chip high-voltage bootstrap switch eliminates external diode/capacitor, reducing BOM count and layout area
Burst dimming with soft start	Each burst initiates full soft-start sequence, preventing lamp electrode sputtering during low-brightness operation
Latch-immune inputs/outputs	HVIC process ensures immunity to transient noise on HO/LO/VS pins, critical in high-dV/dt CCFL environments
Micro-power startup	≤350 µA VCC current below UVLO allows reliable cold-start in battery-backed or energy-constrained systems
Programmable ignition time	Configured via CR capacitor (1 nF typical); enables optimization for lamp type and aging characteristics

Applications

Medical Imaging Displays

Industrial HMI Panels

Use Scenario: Backlighting high-reliability LCDs in ultrasound machines and surgical monitors requiring flicker-free, stable luminance over 10+ years.

IC Role / Device Role / Timing Role: Half-bridge ballast controller managing lamp ignition, current regulation, and analog dimming under EMI-sensitive conditions.

Use Value: Latched open-circuit protection and 600 V offset tolerance ensure fail-safe operation during lamp aging or cable disconnect events.

Use Scenario: Driving CCFL backlights in factory-floor HMIs exposed to wide temperature swings (−40°C to +85°C) and electrical noise.

IC Role / Device Role / Timing Role: High-voltage gate driver with UVLO hysteresis and latch immunity maintaining stable lamp operation despite supply ripple and ground bounce.

Use Value: Micro-power startup and 1 V UVLO hysteresis prevent erratic behavior during brownout or cold-start conditions.

Avionics Display Systems

Test & Measurement Equipment

Use Scenario: Powering EEFL-based backlights in cockpit displays where EMI compliance and single-point failure avoidance are mandatory.

IC Role / Device Role / Timing Role: Ballast controller implementing burst dimming with per-burst soft start to minimize electromagnetic emissions during brightness transitions.

Use Value: Burst mode dimming reduces RMS current and thermal stress on lamps while preserving electrode life in mission-critical applications.

Use Scenario: Controlling CCFL intensity in oscilloscope and spectrum analyzer front panels requiring precise, stepless brightness adjustment.

IC Role / Device Role / Timing Role: Analog-dimming interface IC converting 0–5 V control voltage into proportional lamp current with <1% linearity error.

Use Value: Integrated 0–5 V dimming input eliminates need for external DAC or op-amp circuitry, simplifying calibration and reducing drift.

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
IRS2553DSPBF	Higher V_OFFSET (650 V), fixed 500 ns deadtime, no programmable ignition time	Suited for higher bus voltage designs; lacks fine ignition tuning for lamp aging compensation	Select when system bus exceeds 600 V or simplified timing is preferred over lamp-life optimization
UCC3974D	Lower V_OFFSET (400 V), external oscillator, no integrated bootstrap FET	Requires external level shifter and bootstrap diode; limited to lower-voltage inverters	Choose when cost sensitivity outweighs integration benefits and bus voltage stays below 400 V

Compared with IRS2552DSPBF, IRS2553DSPBF trades ignition programmability for higher voltage margin, while UCC3974D sacrifices integration and noise immunity for legacy design compatibility and lower unit cost.

Availability

IRS2552DSPBF is available at Aetrix Electronics and suitable for medical imaging displays, industrial HMI panels, avionics display systems, and test & measurement equipment requiring stable component supply across extended product lifecycles.

Supply support for IRS2552DSPBF 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 innovation, with global manufacturing and qualification to industrial and automotive standards.

The IRS2552DSPBF belongs to Infineon's CCFL/EEFL ballast controller product line, designed specifically for robust, low-EMI backlight inverters in safety-critical and long-lifecycle display applications.

FAQ

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

The IRS2552DSPBF specifies ±50 V/ns as the absolute maximum allowable slew rate on the VS pin. Exceeding this may cause false triggering of the high-side driver or internal latch-up. Layout best practices include minimizing loop area between VS, HO, and bootstrap components and using low-inductance ceramic capacitors.

How does the latched open-circuit protection work?

The CS pin monitors lamp current via an external sense resistor. When voltage at CS exceeds 0.6 V (typical), the IC enters a latched shutdown state, disabling both HO and LO outputs until VCC is cycled. This prevents uncontrolled high-voltage arcing in broken or disconnected lamp conditions.

Can IRS2552DSPBF drive MOSFETs and IGBTs interchangeably?

Yes - the 300 mA source / 450 mA sink drive strength supports both N-channel MOSFETs and NPT IGBTs commonly used in CCFL inverters. Gate resistor selection must account for differing Q_g values: ≤10 Ω for MOSFETs, 15–22 Ω for IGBTs to maintain safe dV/dt and switching loss balance.

Is external bootstrap diode required?

No - the IRS2552DSPBF integrates a bootstrap FET, eliminating the need for an external diode. A 0.1 µF ceramic capacitor between VB and VS is still required to supply high-side gate charge during each switching cycle, and must be placed close to the IC pins.

IRS2552DSPBF Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: 16-SOIC (0.154", 3.90mm Width)

Packaging:: Tube

Product Status:: Discontinued at Digi-Key

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:: Surface Mount

Supplier Device Package:: 16-SOIC

IRS2552DSPBF FAQ

1.How can I place an order for IRS2552DSPBF through Aetrix?

Please submit a Request for Quotation (RFQ) for IRS2552DSPBF 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 IRS2552DSPBF reliable?

The price and inventory of IRS2552DSPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRS2552DSPBF is usually 5 days.

3.What payment methods are accepted for IRS2552DSPBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRS2552DSPBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRS2552DSPBF?

IRS2552DSPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRS2552DSPBF 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 IRS2552DSPBF?

For technical support, including IRS2552DSPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRS2552DSPBF requirements.

6.How does Aetrix verify that IRS2552DSPBF is sourced from the original manufacturer or authorized distributors?

All IRS2552DSPBF 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 IRS2552DSPBF meets industry standards.

7.What is the process for return or replacement of IRS2552DSPBF?

All IRS2552DSPBF units undergo pre-shipment inspection (PSI). If there is an issue with IRS2552DSPBF, 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 IRS2552DSPBF part is unused and in its original packaging.

Return procedure for IRS2552DSPBF:

1.Submit a request within 90 days.

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

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