Infineon Technologies IRS2530DSPBF

Overview

IRS2530DSPBF from Infineon Technologies (formerly International Rectifier) is a dimming ballast control IC with integrated half-bridge gate drivers, designed for electronic fluorescent lamp (CFL and linear T8/T5) ballasts. It delivers closed-loop lamp current dimming down to 10%, features internal non-ZVS and crest factor protection, fixed 2.0 μs dead-time, and micropower startup (250 μA) - enabling flash-free start across all dimming levels in single-lamp linear dimming systems.

For engineers reviewing the IRS2530DSPBF datasheet, IRS2530DSPBF pinout, IRS2530DSPBF application, or IRS2530DSPBF equivalent, key selection considerations include its 600 V high-side floating supply capability, dual-output drive (180 mA source / 260 mA sink), internal 15.6 V VCC zener clamp, programmable preheat time, and single-pin dimming interface supporting 1–10 V analog input.

Technical Context

This IC implements a voltage-controlled oscillator (VCO)-based frequency modulation scheme where lamp current feedback and DC dim voltage are coupled into a single control loop. The internal bootstrap MOSFET enables self-powered high-side drive without external charge pump components, while VS pin sensing supports real-time half-bridge voltage monitoring for non-ZVS detection and crest factor fault triggering.

Protection logic includes latch-immune fault handling with auto-restart on lamp insertion, UVLO thresholds (VCCUV+ = 12.5 V typ., hysteresis = 2.0 V), and dedicated shutdown thresholds for LO (8.75 V) and VCO (4.0 V). All protection functions - including over-current, over-voltage, and thermal margin safeguards - are fully internal and require no external circuitry.

Key Specifications

Pinout & Package

IRS2530DSPBF is housed in an 8-pin SOIC (SO8) package with standard surface-mount footprint and JEDEC MS-012AC dimensions (5.0 mm × 6.2 mm, 1.27 mm pitch). Thermal resistance R_θJA is 128 °C/W under still-air conditions.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IRS2530DSPBF, the TRPBF variant offers identical performance in tape-and-reel format for SMT lines, while the IRS25301DPBF removes preheat timing - making it unsuitable for standard CFLs but viable for instant-start linear lamps where reduced ignition time is critical.

Availability

IRS2530DSPBF is available at Aetrix Electronics and suitable for linear dimming ballasts, 3-way switch dimming ballasts, and multi-level CFL retrofit systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for IRS2530DSPBF 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 in high-voltage analog and power IC design, with global manufacturing and qualification to industrial standards (JEDEC JESD22, JESD78A).

The IRS2530D series belongs to Infineon's fluorescent lamp control IC product line, engineered specifically for cost-sensitive, high-reliability electronic ballasts targeting commercial and residential lighting upgrades.

FAQ

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

The VS pin supports a maximum slew rate of ±50 V/ns per absolute maximum ratings. Exceeding this may trigger false non-ZVS fault detection or damage internal sensing circuitry. Layout best practice requires minimizing trace inductance between VS and the half-bridge source node, and using a 100 pF ceramic capacitor directly at the pin for high-frequency filtering.

Can IRS2530DSPBF drive MOSFETs directly without external gate resistors?

While IRS2530DSPBF provides 180 mA source and 260 mA sink capability, external gate resistors (typically 10–22 Ω) are required to damp ringing, limit peak current during Miller plateau crossing, and ensure controlled turn-on/turn-off times. Omitting them risks shoot-through, EMI increase, and gate oxide stress in fast-switching applications.

How is lamp preheat time programmed?

Preheat duration is set by the external capacitor C_PH connected between the PH pin and COM. A 100 nF capacitor yields ~0.8 s preheat; values from 47 nF to 220 nF provide 0.4–1.8 s range. The internal current source charges C_PH linearly; timing ends when voltage reaches 2.5 V, initiating ignition phase.

Does IRS2530DSPBF support digital dimming protocols like DALI or DMX?

No - IRS2530DSPBF accepts only analog 0–10 V or resistive dimming inputs. It lacks UART, transceiver, or protocol decoding circuitry. For DALI or DMX integration, an external microcontroller must translate digital commands into corresponding analog voltage levels applied to the DIM pin.