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Texas Instruments TPS92411PDBVR
- Part No.:
- TPS92411PDBVR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS92411PDBVR.pdf
- Description:
- IC LED DRIVER OFFL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TPS92411PDBVR from Texas Instruments is a 100-V floating MOSFET switch IC designed for offline AC linear LED drivers in phase-dimmable luminaires. It features 2-Ω RDS(on), 200 µA quiescent current, ±4.9 µA RSNS threshold current, and integrated overvoltage protection (OVP) with 96 V falling threshold - enabling low-ripple current drive for LED stacks up to 70 W in 120 VAC systems.
For engineers reviewing the TPS92411PDBVR datasheet, TPS92411PDBVR pinout, TPS92411PDBVR application, or TPS92411PDBVR equivalent, this device serves as a critical shunt-switching element in linear regulator-based AC/DC LED drivers requiring high power factor (>0.9), low THD, and EMI-constrained environments without inductive components.
Technical Context
The TPS92411PDBVR operates as a controlled floating switch synchronized to rectified AC line zero-cross events, steering current between LED stacks and bypass capacitors via slew-controlled ON/OFF transitions (0.5–1 V/µs). Its VS pin serves as floating ground reference, while RSET and RSNS pins set voltage thresholds (1.25 V typical) that determine switching points relative to VIN and VS.
It functions exclusively with an external linear current regulator (e.g., discrete FET + sense resistor or TPS92410), providing no regulation itself - only precise timing of shunt conduction to maintain constant LED current across AC half-cycles. The DDA (SO PowerPAD-8) package enables thermal management for >50 W designs, with θJB = 39.1 °C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Voltage Rating | 100 V max - supports direct connection to rectified 120 VAC (≈170 VPK) when used with blocking diode and proper OVP margin |
| RDS(on) | 2 Ω typ at 100 mA, 25°C - enables low conduction loss during shunt phase in high-current LED strings |
| VIN UVLO Threshold | 6.5 V rising - prevents erratic startup until sufficient bias is established from rectified AC input |
| RSET Threshold Voltage | 1.25 V typ - sets switch-OFF point via external resistor divider; determines LED stack turn-on timing |
| RSNS Threshold Current | −4.9 µA typ - defines switch-ON point by sensing VS node voltage drop; enables precise zero-cross detection |
| OVP Falling Threshold | 96 V (TPS92411P only) - clamps operation before exceeding 105 V absolute max, protecting LEDs and storage caps |
| IQ | 200 µA typ - minimizes standby power loss in always-on AC-connected lighting systems |
Pinout & Package
TPS92411PDBVR uses the SO PowerPAD-8 (DDA) package: 4.89 mm × 3.90 mm body with exposed thermal pad connected to VS. Thermal resistance θJB = 39.1 °C/W enables high-power LED driver layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RSET | Threshold input | Connects to VIN via resistor to set switch-OFF voltage (1.25 V reference); determines LED conduction onset |
| 2 - NC | No connect | Not internally bonded; must be left unconnected or tied to VS per layout guidelines |
| 3 - VIN | Supply input | Positive supply referenced to VS; powers internal circuitry and provides voltage for RSET divider |
| 4 - DRAIN | Switch output | Drain of internal 100-V MOSFET; connects to LED string anode via blocking diode |
| 5 - RSNS | Sense input | Current-sense node referenced to VS; detects VS voltage drop to trigger switch-ON at zero-cross |
| 6 - NC | No connect | Not internally bonded; must be left unconnected or tied to VS |
| 7 - NC | No connect | Not internally bonded; must be left unconnected or tied to VS |
| 8 - VS | Floating ground | Source of internal MOSFET and local ground reference; connects to exposed thermal pad |
Key Features
| Feature | Design Value |
|---|---|
| Slew-controlled switching | dv/dt(ON) = 1 V/µs, dv/dt(OFF) = 0.5 V/µs - reduces EMI generation vs. hard-switched alternatives |
| Integrated OVP (TPS92411P only) | 96 V falling threshold with hysteresis - eliminates need for external overvoltage clamp in 94 VMAX LED stacks |
| Floating architecture | VS pin as switch source and local ground - enables series-stacked multi-channel LED control without level shifters |
| UVLO with hysteresis | 6.5 V rising / 6.13 V falling - ensures clean startup and shutdown across wide temperature range (–40°C to 150°C) |
| Low-IQ bias current | 200 µA typical - maintains efficiency in dimmed or standby states without compromising response time |
Applications
| LED Lamps & Light Bulbs | Downlights |
|---|---|
|
Use Scenario: Retrofit A19 and PAR30 lamps operating directly from 120 VAC with TRIAC phase dimming. IC Role / Device Role / Timing Role: Shunt switch controlling current path between LED stack and bypass capacitor on each AC half-cycle. Use Value: Achieves >0.9 power factor and <15% current ripple without magnetics - meeting ENERGY STAR and IEC 61000-3-2 Class C requirements. |
Use Scenario: Commercial recessed downlights using stacked LED strings for 30–70 W output. IC Role / Device Role / Timing Role: Floating switch enabling multi-string voltage segmentation (e.g., 20 V / 40 V / 80 V) with independent RSET/RSNS thresholds. Use Value: Enables high-efficiency linear drive with 94 V OVP limit - avoids flyback transformer size/cost while maintaining flicker-free dimming. |
| LED Luminaires | Phase-Dimmable Troffer Fixtures |
|
Use Scenario: High-bay and panel luminaires rated for 70+ W in industrial settings with 120/230 VAC input. IC Role / Device Role / Timing Role: Primary shunt element in discrete linear regulator topology, coordinating with external cascode FET for 160 V LED stacks. Use Value: Supports scalable power via SO PowerPAD-8 thermal design (θJB = 39.1 °C/W) - sustains continuous operation at TJ ≤ 150°C. |
Use Scenario: Office troffer fixtures requiring smooth 1%–100% dimming range with legacy TRIAC dimmers. IC Role / Device Role / Timing Role: Synchronized shunt controller ensuring consistent LED current during leading-edge dimmer conduction angles. Use Value: Eliminates audible noise and flicker by avoiding high-frequency switching - critical for human-centric lighting applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar floating switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS92411DBVR | No overvoltage protection; 100 V OVP threshold not implemented; identical pinout and RDS(on) | Suitable only where external OVP is added or LED stack voltage remains ≤90 V with margin | Select TPS92411DBVR if system-level OVP is handled externally and cost reduction is prioritized. |
| NCP3066DR2G | Fixed-frequency PWM controller (not floating switch); requires external MOSFET, inductor, and feedback network | Used in buck-derived AC/DC topologies - adds magnetics but supports wider input ranges and higher power | Choose NCP3066DR2G when designing for 230 VAC-only or >100 W systems where EMI filtering is less constrained. |
Compared with TPS92411PDBVR, TPS92411DBVR removes OVP functionality but retains identical thermal and switching performance, while NCP3066DR2G shifts to a switched-mode architecture requiring additional passive components and layout complexity - making TPS92411PDBVR optimal for compact, low-EMI, linear-regulator-based luminaires up to 70 W.
Availability
TPS92411PDBVR is available at Aetrix Electronics and suitable for LED luminaires, downlights, and phase-dimmable troffer fixtures requiring stable component supply, long-term lifecycle support, and traceable sourcing for industrial lighting OEMs.
Supply support for TPS92411PDBVR 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
Texas Instruments is a global semiconductor company specializing in analog and embedded processing technologies, with leadership in power management and lighting control ICs.
The TPS92411 product line delivers floating MOSFET switches for AC mains-connected LED drivers - designed specifically to replace magnetic-based topologies with compact, low-EMI, high-PF linear solutions for retrofit and commercial lighting.
FAQ
What is the primary function of the TPS92411PDBVR in an LED driver circuit?
The TPS92411PDBVR acts as a controlled floating shunt switch that directs current between LED strings and bypass capacitors during AC line half-cycles. It does not regulate current itself but enables low-ripple LED drive when paired with an external linear regulator - achieving >0.9 power factor without inductors. Its VS pin serves as the local floating ground reference for accurate zero-cross detection.
How does the TPS92411PDBVR differ from the standard TPS92411DBVR?
The TPS92411PDBVR includes integrated overvoltage protection (OVP) with a 96 V falling threshold, while the TPS92411DBVR lacks OVP entirely. Both share identical pinout, RDS(on), quiescent current, and UVLO behavior. The 'P' suffix denotes the protected variant - critical for designs where LED stack voltage may approach 94 V or where system-level OVP is impractical.
Can the TPS92411PDBVR be used in 230 VAC applications?
Yes - the TPS92411PDBVR supports 230 VAC inputs when used with appropriate blocking diodes, voltage-rated capacitors, and segmented LED stacks (e.g., 40 V / 80 V / 160 V). Design tools SLVC516 and SLVC517 provide validated component calculators for both 120 VAC and 230 VAC configurations, ensuring compliance with IEC 61000-3-2 harmonic limits.
What thermal considerations apply to the TPS92411PDBVR in high-power LED designs?
The TPS92411PDBVR in SO PowerPAD-8 (DDA) package has θJB = 39.1 °C/W. For 70 W luminaires, PCB copper area under the exposed thermal pad must be ≥250 mm² connected to VS plane. Junction temperature must remain ≤150°C - verified using TJ = TA + (θJB × PD), where PD ≈ ISW² × RDS(on) during shunt conduction.
Is the TPS92411PDBVR compatible with TRIAC-based phase dimmers?
Yes - the TPS92411PDBVR is explicitly designed for phase-dimmable LED drivers. Its slew-controlled switching and precise RSNS/RSET threshold timing ensure stable operation across full 1%–100% dimming range with leading-edge TRIAC dimmers, eliminating flicker and audible noise common in high-frequency switcher-based solutions.
TPS92411PDBVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- AC DC Offline Switcher
- Topology:
- Flyback, Step-Down (Buck), Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 7.5V
- Voltage - Supply (Max):
- 94V
- Voltage - Output:
- -
- Current - Output / Channel:
- -
- Frequency:
- -
- Dimming:
- -
- Applications:
- Lighting
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TPS92411PDBVR FAQ
1.How can I place an order for TPS92411PDBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS92411PDBVR 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 TPS92411PDBVR reliable?
The price and inventory of TPS92411PDBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS92411PDBVR is usually 5 days.
3.What payment methods are accepted for TPS92411PDBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS92411PDBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS92411PDBVR?
TPS92411PDBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS92411PDBVR 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 TPS92411PDBVR?
For technical support, including TPS92411PDBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS92411PDBVR requirements.
6.How does Aetrix verify that TPS92411PDBVR is sourced from the original manufacturer or authorized distributors?
All TPS92411PDBVR 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 TPS92411PDBVR meets industry standards.
7.What is the process for return or replacement of TPS92411PDBVR?
All TPS92411PDBVR units undergo pre-shipment inspection (PSI). If there is an issue with TPS92411PDBVR, 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 TPS92411PDBVR part is unused and in its original packaging.
Return procedure for TPS92411PDBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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