Infineon Technologies IRS2530DSTRPBF

Overview

IRS2530DSTRPBF 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 T5/T8) ballasts. It delivers closed-loop lamp current dimming down to 10%, features internal non-ZVS and crest factor protection, 2.0 μs fixed 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 IRS2530DSTRPBF datasheet, IRS2530DSTRPBF pinout, IRS2530DSTRPBF application, or IRS2530DSTRPBF equivalent, key selection criteria include its 600 V high-side floating supply capability, dual 180 mA / 260 mA gate drive outputs (HO/LO), 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 one control loop. The internal bootstrap MOSFET enables self-biased high-side drive without external charge pump components, while the VS pin senses half-bridge node voltage for real-time non-ZVS detection and crest factor monitoring.

Protection logic integrates latch-immune fault handling: LO shutdown threshold is 8.75 V, VCO fault rising threshold is 4.0 V, and VS non-ZVS detection triggers at 4.5 V. All protections - including UVLO (12.5 V rise / 10.5 V fall on VCC), internal 7.25 V VCO zener clamp, and thermal limits (TJ = –40°C to +125°C) - operate autonomously without external circuitry.

Key Specifications

Pinout & Package

IRS2530DSTRPBF is housed in an SOIC-8 (SO8) surface-mount package with standard 1.27 mm pitch, RoHS-compliant, MSL2 per J-STD-020C.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IRS2530DPBF, the SOIC-8 version offers better manufacturability and thermal performance in reflow assembly; versus IRS2166DSTRPBF, it trades PFC integration for reduced BOM and simpler layout in non-PFC applications.

Availability

IRS2530DSTRPBF is available at Aetrix Electronics and suitable for linear dimming ballasts, 3-way switch dimming ballasts, and multi-level CFL/T5 lamp drivers requiring stable component supply across industrial lighting, commercial retrofit, and OEM fixture production programs.

Supply support for IRS2530DSTRPBF 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 automotive-grade quality systems.

The IRS2530D series belongs to Infineon's fluorescent lamp ballast control product line, engineered specifically for cost-sensitive, high-reliability AC-powered lighting systems requiring analog dimming, robust protection, and minimal external components.

FAQ

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

The VS pin supports ±50 V/ns slew rate under normal operation. Exceeding this may trigger false non-ZVS faults or damage internal protection circuitry. Layout best practice requires minimizing trace inductance between VS and half-bridge source node, and using a 100 pF ceramic capacitor directly at the pin for noise filtering.

Can IRS2530DSTRPBF drive IGBTs instead of MOSFETs?

No - IRS2530DSTRPBF is optimized for fast-switching MOSFETs with gate charge requirements compatible with its 180 mA/260 mA drive strength. IGBT gate drive demands higher peak current and longer turn-off tail times, which this IC does not support. Use dedicated IGBT drivers like IRS44273 for such applications.

How is preheat time programmed?

Preheat time is set by an external RC network connected between DIM pin and COM. A 100 kΩ resistor and 100 nF capacitor yields ~1.5 s preheat; values scale linearly. The IC monitors DIM pin voltage decay during preheat and transitions to ignition only after reaching the programmed threshold, ensuring consistent cathode heating.

Does the internal bootstrap MOSFET eliminate need for external diode?

Yes - the integrated bootstrap FET replaces the traditional bootstrap diode and enables bidirectional charging of the bootstrap capacitor during both high- and low-side switching cycles. This eliminates reverse recovery loss and improves efficiency, especially at high frequencies (>80 kHz), without requiring external diode or gate resistor tuning.