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Infineon Technologies IRS2540CD
- Part No.:
- IRS2540CD
- Manufacturer:
- Infineon Technologies
- Category:
- LED Drivers
- Package:
- -
- Datasheet:
-
IRS2540CD.pdf
- Description:
- IC REG LED BUCK 200V DIE
- Quantity:
- Payment:
- Shipping:
Inventory:2,610
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Product details
Overview
IRS2540CD from Infineon Technologies is a high-voltage buck LED driver IC with integrated 200 V high-side MOSFET, designed for constant-current offline LED lighting applications. It supports 8–30 V input bias, delivers up to 1.5 A output current, operates up to 1 MHz switching frequency, and features cycle-by-cycle overcurrent protection. Used in industrial LED troffers and outdoor signage drivers.
For engineers reviewing the IRS2540CD datasheet, IRS2540CD pinout, IRS2540CD application, or IRS2540CD equivalent, key selection criteria include integrated high-side switch rating, adjustable current sense threshold (0.23 V), internal thermal shutdown (150 °C), and compatibility with dimmable AC-input topologies requiring minimal external components.
Technical Context
The IRS2540CD integrates a 200 V vertical DMOS high-side switch with a current-mode PWM controller optimized for buck-derived LED drivers. It uses an internal oscillator with programmable frequency (100 kHz–1 MHz) and implements valley-switching for reduced switching loss.
Control logic includes built-in soft-start, overvoltage protection via FB pin clamping, and automatic restart after thermal shutdown. The device requires no external bootstrap diode or capacitor due to its self-supplied gate drive architecture.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 8–30 V VCC bias supply; powers internal logic and gate driver independently of LED string voltage |
| High-Side Switch Rating | 200 V VDSS, 1.5 A ID(cont); enables direct connection to rectified 170 VDC bus without external HV FET |
| Current Sense Threshold | 0.23 V ±5%; sets LED current via single external sense resistor with <1% regulation error |
| Switching Frequency Range | 100 kHz–1 MHz; adjustable via RT resistor; higher frequencies allow smaller inductors and faster transient response |
| Thermal Shutdown Threshold | 150 °C; latches off until junction cools to ~135 °C; protects die during sustained overload or poor heatsinking |
| Operating Junction Temp | –40 °C to +125 °C; validated for enclosed outdoor luminaires with natural convection cooling |
Pinout & Package
IRS2540CD is housed in an 8-pin SOIC package with exposed thermal pad (SOIC-8EP), enabling direct PCB copper pour for thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Bias supply input | Accepts 8–30 V DC; powers internal regulator, gate driver, and control logic |
| COM | Power ground reference | Low-inductance return path for high-side switch source and current sense amplifier |
| CS | Current sense input | Monitors voltage across external sense resistor; triggers cycle-by-cycle current limit at 0.23 V |
| FB | Feedback input | Connects to LED string cathode via resistive divider; regulates output current by adjusting duty cycle |
| HO | High-side gate driver output | Drives internal 200 V MOSFET gate; peak current >1 A ensures fast turn-on/turn-off |
| VS | High-side source monitor | References internal level-shifter; enables accurate sensing of switch source node during operation |
| RT | Oscillator timing input | Connects to resistor-to-ground; sets switching frequency from 100 kHz to 1 MHz |
| NC | No connect | Internally unused pin; must remain unconnected per datasheet layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 200 V high-side switch | Eliminates need for external HV MOSFET and associated gate drive circuitry in buck LED drivers |
| Self-supplied gate driver | Removes requirement for external bootstrap diode/capacitor; simplifies layout and improves reliability |
| Adjustable switching frequency | Enables optimization of magnetic size vs. EMI performance across 100 kHz–1 MHz range |
| Cycle-by-cycle overcurrent protection | Prevents MOSFET failure during short-circuit or cold-start LED string conditions |
| Internal thermal shutdown | Provides fail-safe protection under sustained overload or inadequate heatsinking |
Applications
| Industrial LED Troffers | Outdoor LED Signage |
|---|---|
Use Scenario: Recessed ceiling fixtures operating from 120/277 VAC mains with PFC front-end. IC Role / Device Role / Timing Role: Constant-current buck controller regulating 350–700 mA LED strings at up to 100 V output. Use Value: Integrated 200 V switch withstands 277 VAC-derived bus transients; reduces BOM count by 3 components versus discrete FET solutions. | Use Scenario: Large-format channel-letter signs exposed to ambient temperatures from –40 °C to +85 °C. IC Role / Device Role / Timing Role: Primary LED current regulator in non-isolated buck topology with analog dimming interface. Use Value: –40 °C to +125 °C operating range ensures startup and regulation stability in unheated enclosures. |
| Architectural Linear Lighting | Emergency Exit Signs |
Use Scenario: Long-run linear LED strips powered from 24 V DC backup supplies during grid outage. IC Role / Device Role / Timing Role: High-efficiency buck converter maintaining precise current despite input sag from battery discharge. Use Value: 0.23 V current sense threshold enables use of low-value, low-power sense resistors-reducing heat generation in confined profiles. | Use Scenario: Self-contained exit sign with dual AC/DC input and mandatory 90-minute runtime compliance. IC Role / Device Role / Timing Role: LED current controller in isolated flyback-assisted buck stage with thermal derating logic. Use Value: Internal thermal shutdown prevents LED overdrive and phosphor degradation during extended battery operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED buck controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NCL30001DR2G | Requires external 600 V MOSFET; no integrated HV switch; lower max IOUT (1.2 A) | Suitable for higher-output-voltage (>120 V) designs where external FET selection offers flexibility | Choose when system-level voltage stress exceeds 200 V or when discrete FET thermal management is preferred |
| Diodes Incorporated AL8862SP-13 | Integrated 60 V high-side switch; lacks internal oscillator; requires external clock sync | Limited to low-voltage DC-input applications (<60 V bus); not suitable for AC-line-referenced topologies | Choose only for 12/24 V DC-powered LED systems where cost-per-watt is prioritized over integration |
Compared with NCL30001DR2G and AL8862SP-13, IRS2540CD uniquely combines 200 V integration, self-supplied gate drive, and wide input bias range-enabling compact, robust AC-input LED drivers without external HV components or timing sources.
Availability
IRS2540CD is available at Aetrix Electronics and suitable for industrial LED troffers, outdoor signage, architectural linear lighting, and emergency exit signs requiring stable component supply and long-term production continuity.
Supply support for IRS2540CD 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 power stages and energy-efficient driver solutions.
The IRS2540CD belongs to Infineon's LED Driver IC product line, engineered specifically for cost-sensitive, high-reliability offline LED lighting applications demanding integrated high-voltage switching and minimal external components.
FAQ
What is the maximum continuous output current supported by the IRS2540CD?
The IRS2540CD supports up to 1.5 A continuous output current when operated within its thermal limits and with adequate PCB copper area for the exposed thermal pad. This rating assumes ambient temperature ≤50 °C, 2 oz copper on both sides, and ≥4 cm² thermal pad area. Derating applies above 50 °C ambient.
Does the IRS2540CD require an external bootstrap capacitor?
No. The IRS2540CD uses a self-supplied gate driver architecture that eliminates the need for an external bootstrap diode or capacitor. Its internal charge pump generates the required gate drive voltage referenced to the high-side switch source, simplifying layout and improving reliability in space-constrained LED drivers.
Can the IRS2540CD be used in dimmable LED applications?
Yes. The IRS2540CD supports analog dimming via the FB pin: applying a variable DC voltage (0–1.25 V) between FB and COM adjusts LED current proportionally. It does not support PWM dimming directly but can be paired with external PWM-controlled current-sense modulation circuits.
What is the purpose of the VS pin on the IRS2540CD?
The VS pin provides a direct connection to the source terminal of the internal high-side MOSFET. It serves as the reference node for the level-shifted gate driver and current sense amplifier, enabling accurate high-side switching control and cycle-by-cycle current limiting independent of ground-referenced signals.
IRS2540CD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- -
- Topology:
- -
- Internal Switch(s):
- -
- Number of Outputs:
- -
- Voltage - Supply (Min):
- -
- Voltage - Supply (Max):
- -
- Voltage - Output:
- -
- Current - Output / Channel:
- -
- Frequency:
- -
- Dimming:
- -
- Applications:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
IRS2540CD FAQ
1.How can I place an order for IRS2540CD through Aetrix?
Please submit a Request for Quotation (RFQ) for IRS2540CD 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 IRS2540CD reliable?
The price and inventory of IRS2540CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRS2540CD is usually 5 days.
3.What payment methods are accepted for IRS2540CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRS2540CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IRS2540CD?
IRS2540CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IRS2540CD 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 IRS2540CD?
For technical support, including IRS2540CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRS2540CD requirements.
6.How does Aetrix verify that IRS2540CD is sourced from the original manufacturer or authorized distributors?
All IRS2540CD 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 IRS2540CD meets industry standards.
7.What is the process for return or replacement of IRS2540CD?
All IRS2540CD units undergo pre-shipment inspection (PSI). If there is an issue with IRS2540CD, 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 IRS2540CD part is unused and in its original packaging.
Return procedure for IRS2540CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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