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Texas Instruments TPS92411DBVT
- Part No.:
- TPS92411DBVT
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS92411DBVT.pdf
- Description:
- IC LED DRIVER OFFL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,470
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Product details
Overview
TPS92411DBVT from Texas Instruments is a 100-V floating MOSFET switch 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 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 TPS92411DBVT datasheet, TPS92411DBVT pinout, TPS92411DBVT application, or TPS92411DBVT equivalent, key selection criteria include its floating VS-referenced operation, slew-controlled switching for EMI reduction, UVLO (6.5 V rising), RSET/RSNS programmable thresholds, and SOT-23-5 package thermal performance (θJA = 209.8 °C/W).
Technical Context
The TPS92411DBVT implements a floating high-side switch architecture where VS serves as the local reference for all control pins (RSET, RSNS, DRAIN). Its internal 100-V MOSFET is slew-rate controlled during turn-on/off (1 V/µs ON, 0.5 V/µs OFF) to minimize EMI generation in line-frequency LED drive topologies.
It functions exclusively as a current-steering element-bypassing or routing rectified AC current to LED stacks via external discrete linear regulators-and does not regulate output current directly. Operation requires coordinated RSET (turn-off threshold) and RSNS (turn-on threshold) resistor networks referenced to system ground and VS.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input voltage range | 7.5 V to 100 V - supports direct connection to rectified 120 VAC mains with margin for peak voltage and ripple. |
| RDS(on) | 1 Ω (typ) at 25°C - enables low conduction loss in high-current shunt paths for up to ~70 W luminaires. |
| IQ | 200 µA (typ) - minimizes standby power consumption in always-on LED lamp designs. |
| UVLO rising threshold | 6.5 V - prevents erratic startup during brownout or low-line conditions; hysteresis of 370 mV ensures clean release. |
| RSET threshold voltage | 1.25 V (typ) - sets precise turn-off point for the internal switch based on VIN–VS voltage divider ratio. |
| RSNS threshold current | –4.9 µA (max) - defines turn-on point by sensing VS node voltage drop across external RSNS resistor. |
| dv/dt(ON) | 1 V/µs - limits EMI emissions during switching transitions in unshielded consumer lighting enclosures. |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, exposed pad connected to VS for thermal enhancement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Positive supply input | Connects to rectified AC bus; powers internal circuitry and defines UVLO/OVP monitoring reference. |
| RSET | Switch turn-off threshold input | Resistor from VIN sets voltage threshold (1.25 V) at which internal MOSFET turns OFF to route current to LEDs. |
| RSNS | Switch turn-on threshold input | Resistor to system ground senses VS voltage drop; –4.9 µA threshold triggers MOSFET turn-ON to bypass LEDs. |
| DRAIN | MOSFET drain terminal | High-voltage switching node; connects to blocking diode anode and LED stack cathode in typical linear driver topology. |
| VS | Floating source/reference node | Serves as local ground for internal circuitry and reference for all control pins; tied to LED stack cathode or upstream VS. |
Key Features
| Feature | Design Value |
|---|---|
| Floating 100-V MOSFET switch | Enables direct integration into high-side, non-ground-referenced LED current paths without level-shifting circuitry. |
| Slew-controlled switching | 1 V/µs turn-on and 0.5 V/µs turn-off rates suppress conducted and radiated EMI in Class B lighting applications. |
| Programmable dual-threshold control | RSET and RSNS pins allow independent setting of turn-off and turn-on points for precise zero-cross alignment and ripple minimization. |
| Input undervoltage lockout | 6.5 V rising threshold with 370 mV hysteresis ensures stable operation only when sufficient bus voltage is present. |
| Low quiescent current | 200 µA typical bias current reduces no-load power loss, critical for Energy Star and IEC 62612 compliance. |
Applications
| LED Lamps and Light Bulbs | Downlights |
|---|---|
Use Scenario: Retrofit A19 and PAR30 LED bulbs operating directly from 120 VAC with TRIAC dimming compatibility. IC Role / Device Role / Timing Role: Floating switch that steers rectified line current between LED stacks and storage capacitors on each half-cycle to maintain constant current. Use Value: Eliminates magnetic components and achieves >0.9 power factor with <5% current ripple-meeting ENERGY STAR Lamps V2.1 flicker requirements. |
Use Scenario: Commercial recessed downlights requiring high lumen density, silent operation, and compact form factor. IC Role / Device Role / Timing Role: High-voltage shunt switch enabling multi-stack LED configuration with cascaded TPS92411 devices for extended voltage range (e.g., 80 V + 40 V + 20 V). Use Value: Enables >70 W output using SOT-23-5 devices with minimal board area and no transformer-induced acoustic noise. |
| LED Luminaires | Phase-Dimmable Fixtures |
Use Scenario: Integrated troffer and panel luminaires for office and retail spaces with DALI or 0–10 V dimming interfaces. IC Role / Device Role / Timing Role: Core current-steering element in hybrid linear-switched architecture, working with discrete FETs and sense resistors to replace flyback converters. Use Value: Reduces BOM cost by 30% vs. isolated flyback while maintaining THD <15% and meeting IEC 61000-3-2 Class C limits. |
Use Scenario: Residential wall sconces and track lighting with legacy TRIAC dimmers and no neutral wire. IC Role / Device Role / Timing Role: Voltage-sensing switch synchronized to rectified AC zero-crossings to enable smooth dimming down to 5% without pop-on or dropout. Use Value: Achieves flicker-free dimming with <0.1% RMS current ripple at minimum dim level-validated per IEEE 1789-2015 Low-Risk guidelines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar floating high-voltage switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS92411PDDAR | SO PowerPAD-8 package with integrated overvoltage protection (OVP) at ~100 V; higher thermal capability (θJA = 58.6 °C/W). | Required for designs needing OVP against LED open-circuit failure; supports higher-power luminaires (>30 W per channel). | Select TPS92411PDDAR when OVP is mandatory and PCB space allows SO-8; otherwise TPS92411DBVT offers lowest footprint. |
| AL8862SP-13 | Monolithic buck controller with integrated 60-V MOSFET; requires external inductor; no floating VS architecture. | Used in isolated or low-voltage DC-input LED drivers; incompatible with direct AC line connection or floating current steering. | Choose AL8862SP-13 only for DC-input systems where inductor use is acceptable and floating topology is unnecessary. |
Compared with TPS92411PDDAR, the TPS92411DBVT trades OVP and thermal headroom for minimal PCB area and lower assembly cost; compared with AL8862SP-13, it eliminates inductors and enables true AC-line-connected linear regulation-but requires careful layout of floating VS nodes and external blocking diodes.
Availability
TPS92411DBVT is available at Aetrix Electronics and suitable for LED lamps and light bulbs, downlights, and phase-dimmable fixtures requiring stable component supply across industrial production cycles and global sourcing.
Supply support for TPS92411DBVT 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 leader delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.
The TPS92411 product line delivers floating high-voltage switches for AC-line-powered LED drivers-designed to replace magnetic-based topologies with compact, low-EMI, inductorless alternatives for residential and commercial lighting.
FAQ
What is the primary function of the TPS92411DBVT in an LED driver circuit?
The TPS92411DBVT acts as a floating high-voltage MOSFET switch that steers rectified AC current between LED stacks and storage capacitors. It does not regulate current directly but enables low-ripple linear LED driving by synchronizing turn-on/turn-off with line voltage zero-crossings. Its VS pin serves as the local reference for all control inputs, allowing operation in non-ground-referenced configurations essential for AC mains-connected designs.
Can the TPS92411DBVT be used with 230 VAC input?
Yes, the TPS92411DBVT supports 230 VAC input when used with appropriate external components: a blocking diode rated ≥200 V, RSNS/RSET resistors scaled for higher trip voltages (e.g., VRSET ≈ 169 V for 160-V LED stack), and sufficient capacitor voltage rating (≥400 V). The device's 100-V absolute maximum drain-source rating requires careful design to ensure (VDRAIN – VVS) stays below 105 V under worst-case surge and ripple conditions.
Does the TPS92411DBVT include overvoltage protection?
No, the TPS92411DBVT does not include overvoltage protection. That feature is exclusive to the TPS92411P variant (e.g., TPS92411PDDAR). The DBVT version relies on external clamping or system-level protection to prevent exceeding its 105-V absolute maximum rating on the DRAIN pin. Designs using TPS92411DBVT must ensure LED stack voltage plus line surges remain within safe operating limits.
How is the switching threshold set on the TPS92411DBVT?
The TPS92411DBVT uses two independent resistor networks: an RSET resistor between VIN and RSET pin sets the turn-off threshold (1.25 V reference), while an RSNS resistor between RSNS pin and system ground sets the turn-on threshold (–4.9 µA current sink). These thresholds define the voltage window over which the internal MOSFET toggles-enabling precise alignment with rectified AC waveform peaks and zero-crossings to minimize current ripple.
What thermal considerations apply to the TPS92411DBVT in SOT-23-5 package?
The TPS92411DBVT in SOT-23-5 (DBV) has a junction-to-ambient thermal resistance (θJA) of 209.8 °C/W under JEDEC-standard high-K board conditions. To maintain TJ ≤150°C at full load, PCB layout must maximize copper area connected to the VS pin and exposed thermal pad, use ≥2 oz copper, and avoid enclosing the device in thermally insulating enclosures. Derating is required above 70°C ambient or >100 mA continuous drain current.
TPS92411DBVT 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
TPS92411DBVT FAQ
1.How can I place an order for TPS92411DBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS92411DBVT 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 TPS92411DBVT reliable?
The price and inventory of TPS92411DBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS92411DBVT is usually 5 days.
3.What payment methods are accepted for TPS92411DBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS92411DBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS92411DBVT?
TPS92411DBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS92411DBVT 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 TPS92411DBVT?
For technical support, including TPS92411DBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS92411DBVT requirements.
6.How does Aetrix verify that TPS92411DBVT is sourced from the original manufacturer or authorized distributors?
All TPS92411DBVT 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 TPS92411DBVT meets industry standards.
7.What is the process for return or replacement of TPS92411DBVT?
All TPS92411DBVT units undergo pre-shipment inspection (PSI). If there is an issue with TPS92411DBVT, 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 TPS92411DBVT part is unused and in its original packaging.
Return procedure for TPS92411DBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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