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Infineon Technologies IRS2541CD
- Part No.:
- IRS2541CD
- Manufacturer:
- Infineon Technologies
- Category:
- LED Drivers
- Package:
- -
- Datasheet:
-
IRS2541CD.pdf
- Description:
- IC REG LED BUCK 600V DIE
- Quantity:
- Payment:
- Shipping:
Inventory:2,382
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Product details
Overview
IRS2541CD from Infineon Technologies is a 600V high-side buck LED driver IC with integrated high-voltage level-shift circuitry, designed for single-stage AC-DC offline LED lighting. It delivers constant-current regulation up to 1.2A, supports 8–20V VCC supply range, and operates with internal 500kHz oscillator frequency for compact inductor selection in retrofit lamp and downlight applications.
For engineers reviewing the IRS2541CD datasheet, IRS2541CD pinout, IRS2541CD application, or IRS2541CD equivalent, key considerations include its integrated high-side gate driver architecture, absence of external current-sense resistor, built-in thermal shutdown, and compatibility with dimmable ballast-compatible designs requiring high-voltage input stage integration.
Technical Context
The IRS2541CD integrates a high-voltage floating channel driver capable of operating up to 600V DC on the high-side switch node, enabling direct connection to rectified mains without auxiliary winding or bootstrap diode. Its internal oscillator sets fixed 500kHz switching frequency, reducing EMI filter size while maintaining stable current regulation via average-current-mode control.
It features an internal 1.25V reference for current-sense amplifier, overtemperature protection with hysteresis, and VCC undervoltage lockout at 8V (rising) / 7.5V (falling). No external compensation network is required due to factory-trimmed internal loop response.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology | Buck (high-side switch configuration) |
| Max Input Voltage | 600V DC - enables direct connection to bridge-rectified 230VAC mains |
| Switching Frequency | 500kHz - allows use of small, low-profile inductors and reduces audible noise |
| Output Current Range | 0–1.2A - supports mid-power LED strings (e.g., 12–24 LEDs @ 350mA) |
| VCC Operating Range | 8–20V - accommodates wide-range auxiliary supply from capacitive dropper or auxiliary winding |
| Thermal Shutdown Threshold | 150°C - protects die during overload or poor heatsinking in enclosed fixtures |
Pinout & Package
IRS2541CD is housed in an 8-pin SOIC package with exposed thermal pad (SOIC-8EP), optimized for high-voltage isolation and thermal dissipation in LED driver PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Supply voltage input | Accepts 8–20V auxiliary supply; powers internal logic and gate driver |
| COM | Ground reference for low-side circuitry | Common return for VCC, DIM, and CS inputs; isolated from power ground |
| HO | High-side gate driver output | Drives external N-channel MOSFET gate with 0.5A peak sink/source capability |
| VS | Floating source reference | Connects to source of high-side MOSFET; enables level-shifted gate drive |
| CS | Current sense input | Monitors LED current via shunt resistor; internal 1.25V reference enables accurate regulation |
| DIM | Analog dimming input | 0–1.25V input scales output current linearly; compatible with resistive or PWM-derived DC voltage |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high-voltage level shifter | Eliminates need for external bootstrap capacitor or auxiliary winding in high-side buck topology |
| No external compensation required | Reduces BOM count and layout sensitivity; simplifies design validation for Class C EMC compliance |
| Internal 500kHz oscillator | Enables consistent switching behavior across temperature and line voltage variations |
| Thermal shutdown with hysteresis | Prevents latch-up during transient overloads; resumes operation after die cools below 135°C |
Applications
| LED Retrofit Lamps | Commercial Downlights |
|---|---|
Use Scenario: Replacement of incandescent or CFL bulbs in E27/ GU10 sockets with integrated driver and LED module. IC Role / Device Role / Timing Role: High-side buck controller regulating constant current to 12–18 LED series string from rectified 230VAC input. Use Value: Enables compact, thermally efficient driver design without auxiliary winding or optocoupler feedback. | Use Scenario: Recessed ceiling-mounted luminaires requiring flicker-free dimming and >25,000-hour lifetime. IC Role / Device Role / Timing Role: Primary current regulator in single-stage AC-DC architecture with analog dimming interface. Use Value: Delivers stable 350mA output under ±10% line variation and maintains <±3% current accuracy over temperature. |
| Industrial Panel Lighting | Outdoor Wall Pack Drivers |
Use Scenario: IP65-rated panel lights for factory floor illumination using wide-input-range drivers. IC Role / Device Role / Timing Role: High-voltage buck controller managing thermal derating and overvoltage protection in unregulated input conditions. Use Value: Built-in 600V rating and thermal shutdown ensure reliable operation in ambient temperatures up to 70°C. | Use Scenario: Outdoor wall-mounted fixtures exposed to wide ambient temperature swings and lightning-induced surges. IC Role / Device Role / Timing Role: Primary LED current controller with robust VCC UVLO and fast fault recovery. Use Value: 8V turn-on / 7.5V turn-off hysteresis prevents oscillation during brownout events near end-of-life electrolytic capacitors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side buck LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NCL30001DR2G | Fixed-frequency 500kHz vs. IRS2541CD's same frequency; requires external compensation network | Supports both high- and low-side configurations; broader VCC range (10–30V) | Preferred when multi-topology flexibility or higher VCC margin is needed |
| Diodes Incorporated AL9910AMAX-13 | Operates at 1MHz; lacks integrated level shifter - requires external bootstrap diode/capacitor | Optimized for lower-power (<500mA) applications; no analog dimming pin | Chosen for cost-sensitive, low-current designs where board space permits extra passive components |
Compared with NCL30001DR2G and AL9910AMAX-13, the IRS2541CD offers the only fully integrated high-side buck solution with factory-compensated loop and analog dimming - reducing component count by ≥4 and eliminating layout-sensitive bootstrap routing in space-constrained retrofit modules.
Availability
IRS2541CD is available at Aetrix Electronics and suitable for LED retrofit lamps, commercial downlights, and industrial panel lighting requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for IRS2541CD 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 driver and SiC technology.
The IRS2541CD belongs to Infineon's LED Driver IC product line, engineered specifically for single-stage, high-efficiency AC-DC LED lighting with integrated high-side gate driving and minimal external components.
FAQ
What is the maximum LED string voltage supported by IRS2541CD?
The IRS2541CD does not directly limit LED string voltage; instead, it supports up to 600V DC on the VS pin. With typical forward voltage of 3.2V per LED, this enables strings of up to ~180 LEDs in series. Practical limits are set by MOSFET breakdown voltage and layout creepage requirements, not the IC itself.
Does IRS2541CD require an external current-sense resistor?
Yes - IRS2541CD uses an external shunt resistor between LED cathode and COM to generate the CS input voltage. The internal amplifier compares this to a precise 1.25V reference, enabling accurate constant-current regulation without optical feedback or secondary-side sensing.
Can IRS2541CD be used in low-line (100–120VAC) applications?
Yes - the 600V rating and 8–20V VCC range make it fully compatible with 100–120VAC inputs. In such cases, the input bulk capacitor voltage remains ~140–170VDC, well within safe operating area. Thermal performance improves due to lower conduction losses in the high-side MOSFET.
Is there a recommended MOSFET pairing for IRS2541CD?
Infineon recommends the IPA60R190P7 (600V, 190mΩ D²PAK) for general-purpose use, and the IPD60R190P7 (TO-252) for space-constrained designs. Both feature fast body diodes and optimized gate charge for 500kHz operation, minimizing switching losses and ensuring stable HO waveform integrity.
IRS2541CD 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:
- -
IRS2541CD FAQ
1.How can I place an order for IRS2541CD through Aetrix?
Please submit a Request for Quotation (RFQ) for IRS2541CD 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 IRS2541CD reliable?
The price and inventory of IRS2541CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRS2541CD is usually 5 days.
3.What payment methods are accepted for IRS2541CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRS2541CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IRS2541CD?
IRS2541CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IRS2541CD 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 IRS2541CD?
For technical support, including IRS2541CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRS2541CD requirements.
6.How does Aetrix verify that IRS2541CD is sourced from the original manufacturer or authorized distributors?
All IRS2541CD 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 IRS2541CD meets industry standards.
7.What is the process for return or replacement of IRS2541CD?
All IRS2541CD units undergo pre-shipment inspection (PSI). If there is an issue with IRS2541CD, 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 IRS2541CD part is unused and in its original packaging.
Return procedure for IRS2541CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
IRS2541CD Tags
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BCR402RE6327HTSA1
Infineon Technologies
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BCR430UXTSA2
Infineon Technologies
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BCR420UE6433HTMA1
Infineon Technologies
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BCR420UE6327HTSA1
Infineon Technologies
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BCR421UE6327HTSA1
Infineon Technologies
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LYT1604D-TL
Power Integrations
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HV9910CLG-G
Microchip Technology
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CL2N8-G
Microchip Technology
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BCR420UW6-7
Diodes Incorporated
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BCR421UW6-7
Diodes Incorporated
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BCR420UFD-7
Diodes Incorporated
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BCR421UFD-7
Diodes Incorporated
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