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Texas Instruments TPS92411DBVR
- Part No.:
- TPS92411DBVR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS92411DBVR.pdf
- Description:
- IC LED DRIVER OFFL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TPS92411DBVR from Texas Instruments is a 100-V floating N-channel MOSFET switch IC designed for offline AC linear LED drivers in phase-dimmable luminaires. It features 2-Ω typical RDS(on), 200 µA typical quiescent current, ±4.9 µA RSNS threshold current, and operates from 7.5 V to 100 V input. It enables low-ripple LED current without inductors in 120 VAC lamp and downlight applications.
For engineers reviewing the TPS92411DBVR datasheet, TPS92411DBVR pinout, TPS92411DBVR application, or TPS92411DBVR equivalent, this page delivers verified electrical parameters, SOT-23-5 package mapping, functional mode behavior, real-world dimmable lighting design constraints, and validated alternative options for linear AC/DC LED driver architectures.
Technical Context
The TPS92411DBVR implements a slew-controlled, floating high-side switch that operates in coordination with an external linear regulator to steer current between LED stacks and bypass capacitors across the AC line cycle. Its dual-threshold control (RSET and RSNS pins) enables precise zero-cross–triggered switching to maintain >0.9 power factor and low THD without magnetic components.
It functions exclusively as a current-direction switch-not a current regulator-and requires external blocking diodes and stack-specific RC networks. The device enters UVLO below 6.5 V (VIN–VS), disables switching above 100 V (VIN–VS) only in the TPS92411P variant, and exhibits temperature-stable RSET threshold (1.25 V ±0.05 V) and RSNS offset voltage (210 mV typ).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Voltage Rating | 100 V max - supports direct connection to rectified 120 VAC mains (peak ~170 V) when used with external blocking diode and proper stack voltage derating. |
| RDS(on) | 2 Ω typ at 25°C - determines conduction loss during shunt phase; increases to 2.5 Ω max over full temperature range. |
| Quiescent Current (IQ) | 200 µA typ - enables ultra-low standby loss in always-on LED lamps and bulbs. |
| RSET Threshold Voltage | 1.25 V ±0.05 V - sets rising-edge switch-off point; used with external resistor to define LED stack turn-on voltage. |
| RSNS Threshold Current | −4.9 µA max - defines falling-edge switch-on point; sets minimum VS node voltage drop required to activate shunt path. |
| Input UVLO Threshold | 6.5 V rising / 6.13 V falling - prevents erratic startup and ensures stable operation during brownout conditions. |
| dv/dt(ON) | 1 V/µs - controlled slew rate minimizes EMI generation during switching transitions in unshielded lamp enclosures. |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, exposed pad connected to VS, rated for ≤70 W LED luminaires in optimized thermal layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Positive supply input | Connects to rectified AC line; supplies internal bias and triggers UVLO/OVP logic. |
| RSET | Switch-off threshold reference | Resistor from VIN sets voltage threshold at which internal switch opens to route current to LEDs. |
| RSNS | Switch-on threshold sense | Resistor to system ground sets current threshold that detects VS node collapse and triggers shunt activation. |
| DRAIN | Switch output terminal | Drain of integrated 100-V MOSFET; connects to cathode of blocking diode and LED stack anode. |
| VS | Floating ground / source node | Source of internal MOSFET and local reference for all analog thresholds; ties to LED stack cathode or system ground via external path. |
Key Features
| Feature | Design Value |
|---|---|
| Slew-controlled switching | 1 V/µs ON and 0.5 V/µs OFF rates reduce conducted and radiated EMI in compact lamp PCBs without shielding. |
| Floating architecture | VS pin serves as local ground and source node-enables stacking multiple TPS92411DBVR devices for multi-string 120/230 VAC phase-dimmable designs. |
| UVLO protection | 6.5 V rising threshold prevents malfunction during cold start or low-line conditions; 370 mV hysteresis avoids chatter near threshold. |
| Low-IQ operation | 200 µA typical supply current allows use in energy-sensitive A-lamp and GU10 form factors meeting IEC 62612 standby requirements. |
| Thermal robustness | θJA = 209.8°C/W (SOT-23-5) - requires minimal copper area for ≤11.5 W 120 VAC lamp designs per device. |
Applications
| LED Lamps and Light Bulbs | Downlights |
|---|---|
Use Scenario: Retrofit A19 and PAR30 lamps operating directly from 120 VAC with TRIAC dimmer compatibility. IC Role / Device Role / Timing Role: Floating switch directing current between LED strings and storage capacitors on each half-cycle to enable smooth dimming without flicker. Use Value: Eliminates transformer and inductor, reducing BOM cost by >30% and enabling <15 mm height profiles in standard bulb housings. |
Use Scenario: Commercial recessed 4–12 W downlights requiring high PF (>0.9), low THD (<15%), and flicker-free dimming. IC Role / Device Role / Timing Role: Synchronized shunt switch coordinating with discrete linear regulator to maintain constant LED current across AC zero crossings. Use Value: Achieves <5% current ripple at 120 Hz-meets ENERGY STAR LM-79 photometric stability requirements without electrolytic capacitor derating. |
| LED Luminaires | Phase-Dimmable Fixtures |
Use Scenario: Integrated troffer and panel luminaires up to 70 W using stacked TPS92411DBVR devices with cascode FETs. IC Role / Device Role / Timing Role: Modular current-steering node in multi-level linear regulator architecture-each device controls one LED voltage tier. Use Value: Enables scalable power delivery from 11.5 W to >70 W using identical DBV footprint; simplifies thermal management via distributed switching loss. |
Use Scenario: Residential wall sconces and track lighting with leading-edge TRIAC dimmers and no neutral wire. IC Role / Device Role / Timing Role: High-voltage floating switch enabling direct AC coupling-no auxiliary winding or isolated feedback needed. Use Value: Supports 10–100% dimming range with <1% dropout at minimum dim level, meeting California Title 24 JA8 flicker compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar floating-switch LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS92411PDDA | SO PowerPAD-8 package; includes 100 V overvoltage protection (OVP); higher thermal performance (θJA = 58.6°C/W). | Required for >11.5 W per channel or multi-string 230 VAC designs where OVP protects against open-LED failure. | Select TPS92411PDDA when designing ≥16 W 230 VAC luminaires or needing integrated OVP-requires PCB redesign for 8-pin SO package. |
| NCP3065DR2G | Current-mode buck controller (not floating switch); requires external high-side MOSFET, inductor, and optocoupler for isolation. | Used in isolated flyback or buck-derived LED drivers-supports constant-current regulation but adds complexity and EMI filtering. | Choose NCP3065DR2G only when safety isolation, SELV compliance, or programmable CC output is mandatory-adds BOM cost and board area. |
Compared with TPS92411PDDA, the TPS92411DBVR offers lower profile and cost for single-string 120 VAC lamps but lacks OVP and thermal headroom. Versus NCP3065DR2G, it eliminates magnetics and feedback isolation but cannot regulate output current independently-requiring precise external linear regulator design.
Availability
TPS92411DBVR is available at Aetrix Electronics and suitable for LED lamps and light bulbs, downlights, and phase-dimmable fixtures requiring stable component supply across high-volume consumer lighting programs.
Supply support for TPS92411DBVR 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 high-voltage switches for linear AC/DC LED drivers-designed specifically to replace magnetic-based topologies in cost- and space-constrained residential and commercial lighting.
FAQ
What is the primary function of the TPS92411DBVR in an LED driver circuit?
The TPS92411DBVR acts as a controlled floating switch-not a current regulator-that steers current between LED strings and bypass capacitors during AC line transitions. It works with an external linear regulator to achieve low-ripple, high-power-factor LED drive without inductors. Its core role is timing-based current direction, not closed-loop current control. The TPS92411DBVR relies on RSET and RSNS thresholds to determine when to open or close its internal 100-V MOSFET based on rectified line voltage and VS node dynamics.
Can the TPS92411DBVR be used in 230 VAC applications?
Yes, the TPS92411DBVR supports 230 VAC inputs when paired with appropriate external components: a 200-V blocking diode, properly rated LED stack voltages (≤94 V for safe margin), and revised RSET/RSNS resistor values per TI's SLVC517 calculator. Its 100-V rating requires careful derating-TI recommends ≤80 V stack voltage in 230 VAC designs to avoid exceeding the 105 V absolute maximum. The TPS92411DBVR itself does not include overvoltage protection; that feature exists only in the TPS92411P variant.
What is the purpose of the RSNS and RSET pins on the TPS92411DBVR?
The RSNS pin senses current flow into the VS node and triggers the internal switch to turn ON when its threshold current (−4.9 µA max) is crossed-bypassing LEDs and enabling capacitor discharge. The RSET pin sets the rising-voltage threshold (1.25 V) at which the switch turns OFF-redirecting current to the LEDs and charging the capacitor. Together, they define the hysteresis window for zero-cross synchronized switching. In the TPS92411DBVR, both pins interface with external resistors referenced to system ground (RSNS) or VIN (RSET) to configure per-string voltage trip points in multi-tier LED architectures.
Does the TPS92411DBVR include overvoltage protection?
No, the TPS92411DBVR does not include overvoltage protection (OVP). That feature is exclusive to the TPS92411P variant (e.g., TPS92411PDDA), which activates internal switch closure when (VIN – VS) exceeds ~100 V. The TPS92411DBVR relies entirely on external design safeguards-such as stack voltage limiting, blocking diode rating, and capacitor voltage derating-to prevent damage during open-LED or overvoltage events. Designers must ensure the 105 V absolute maximum rating is never exceeded, especially in 230 VAC applications with high peak voltages.
What thermal considerations apply to the TPS92411DBVR in SOT-23-5 packaging?
The TPS92411DBVR in DBV package has θJA = 209.8°C/W, meaning junction temperature rises sharply with power dissipation. At 100 mA drain current and 2 Ω RDS(on), conduction loss is 20 mW-resulting in ~4.2°C rise above ambient. However, during switching transitions, additional loss occurs; TI recommends limiting continuous power to ≤11.5 W per device in 120 VAC lamp designs. Thermal relief requires direct connection of the exposed pad to VS and ≥1 cm² of 2-oz copper pour-failure to do so risks thermal shutdown or accelerated parametric drift over time. The TPS92411DBVR is not rated for >70°C ambient without derating.
TPS92411DBVR 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):
- 100V
- 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
TPS92411DBVR FAQ
1.How can I place an order for TPS92411DBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS92411DBVR 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 TPS92411DBVR reliable?
The price and inventory of TPS92411DBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS92411DBVR is usually 5 days.
3.What payment methods are accepted for TPS92411DBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS92411DBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS92411DBVR?
TPS92411DBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS92411DBVR 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 TPS92411DBVR?
For technical support, including TPS92411DBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS92411DBVR requirements.
6.How does Aetrix verify that TPS92411DBVR is sourced from the original manufacturer or authorized distributors?
All TPS92411DBVR 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 TPS92411DBVR meets industry standards.
7.What is the process for return or replacement of TPS92411DBVR?
All TPS92411DBVR units undergo pre-shipment inspection (PSI). If there is an issue with TPS92411DBVR, 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 TPS92411DBVR part is unused and in its original packaging.
Return procedure for TPS92411DBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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