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Texas Instruments TPS92311DR/NOPB
- Part No.:
- TPS92311DR/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS92311DR/NOPB.pdf
- Description:
- IC LED DRIVER OFFL 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,239
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Product details
Overview
TPS92311DR/NOPB from Texas Instruments is a 600V integrated primary-side sensing LED driver IC with adaptive constant-on-time control, quasi-resonant switching, and built-in 3.75Ω power MOSFET. It delivers up to 8W LED output with inherent PFC in CRM mode, regulates LED current without secondary-side sensing, and operates across 85–132VRMS AC input. Used in A19, PAR30/38, and GU10 LED lamps.
For engineers reviewing the TPS92311DR/NOPB datasheet, TPS92311DR/NOPB pinout, TPS92311DR/NOPB application, or TPS92311DR/NOPB equivalent, key selection criteria include its 600V drain rating, 1.2A peak switch current, programmable delay timing, ZCD-based valley switching, and dual-mode (COT/PCM) configuration via MODE1/MODE2 pins.
Technical Context
The TPS92311DR/NOPB implements critical-conduction-mode (CRM) control using zero-current detection (ZCD) from an auxiliary winding to enable valley-switching of its internal 600V MOSFET. Its adaptive constant-on-time algorithm dynamically adjusts tON based on primary inductor peak current and secondary discharge time, enabling >0.9 PF without external PFC circuitry.
Operating modes-COT for isolated/non-isolated topologies and peak-current mode (PCM) for isolated configurations-are selected via MODE1/MODE2 logic levels. Protection includes over-temperature shutdown (165°C), output OVP (via ZCD-PEAK monitoring), and cycle-by-cycle ISNS overcurrent detection with mode-dependent thresholds (0.64V non-isolated / 3.4V isolated).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Integrated MOSFET | 600V drain-source breakdown, 3.75Ω RDS(on) - enables direct high-voltage AC/DC conversion without external HV switch |
| Switching Control | Adaptive constant-on-time (COT) + peak-current mode (PCM) - selectable via MODE1/MODE2 for PFC optimization or low-current ripple |
| Zero-Cross Detection | ZCD pin with 1.24V arming / 0.6V trigger thresholds - enables valley-switching to reduce EMI and switching loss |
| Current Regulation | Primary-side ISNS sensing with 0.64V (non-isolated) or 3.4V (isolated) OCP threshold - eliminates optocoupler and secondary shunt |
| Thermal Protection | 165°C junction shutdown with 20°C hysteresis - prevents permanent damage during thermal overload |
| Supply Range | VCC UVLO: 23.4V turn-on / 13V turn-off - ensures reliable startup from rectified AC line via bias resistor |
| Delay Timing | DLY pin with 1.23V internal reference - sets MOSFET turn-on delay via single resistor to optimize resonance and EMI |
Pinout & Package
TPS92311DR/NOPB is housed in a 16-pin narrow SOIC package (SOIC-16N) with exposed pad for thermal dissipation. Pin 1 is SW (drain), and pins 3/7/14 are NC. GND appears on pins 5 and 12; SW repeats on pins 1, 2, 15, and 16 for low-inductance drain routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 15, 16 | SW | Drain of integrated 600V MOSFET - connects directly to transformer primary and requires low-inductance PCB layout |
| 4 | ZCD | Zero-crossing detection input - senses auxiliary winding voltage via resistor divider to trigger valley switching |
| 5, 12 | GND | Analog/digital ground reference - must be connected to common ground plane with minimal impedance |
| 6 | VIN | VCC supply input - powers internal circuitry after startup; derived from auxiliary winding post-startup |
| 8 | COMP | Error amplifier output - connects to RC compensation network to stabilize LED current regulation loop |
| 9 | DLY | Delay control input - sets MOSFET turn-on delay via external resistor to minimize switching loss at resonance |
| 10, 11 | MODE2, MODE1 | Mode selection inputs - configure COT/PCM and isolated/non-isolated operation per Table 1 in datasheet |
| 13 | ISNS | Current sense input - monitors voltage across RISNS for cycle-by-cycle peak current limiting and OCP |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 600V MOSFET | Eliminates need for external HV switch and associated gate drive complexity in offline LED drivers |
| Primary-side current regulation | Removes optocoupler, TL431, and secondary-side feedback components - reduces BOM count and cost |
| Adaptive COT with CRM | Delivers >0.9 power factor inherently without active PFC controller or boost stage |
| Programmable DLY timing | Enables precise tuning of MOSFET turn-on delay to match transformer LP and CDS resonance - lowers EMI |
| Multi-mode topology support | Configurable for isolated flyback or non-isolated buck-boost via MODE1/MODE2 - increases design reuse |
Applications
| A19 LED Lamp (E26/E27) | PAR30/38 Reflector Lamp |
|---|---|
Use Scenario: 85–132VRMS mains-powered residential bulb replacement with 7-LED string (21V, 350mA). IC Role / Device Role / Timing Role: Primary-side LED current regulator and PFC controller; manages CRM switching, ZCD-triggered valley turn-on, and adaptive tON. Use Value: Achieves >0.9 PF and <10% THD without auxiliary PFC stage, meeting Energy Star and IEC 61000-3-2 Class C requirements. |
Use Scenario: Commercial track lighting module driving 8W LED load in enclosed fixture with thermal constraints. IC Role / Device Role / Timing Role: Integrated offline LED driver with thermal shutdown (165°C) and overvoltage protection via ZCD-PEAK monitoring. Use Value: Enables compact, convection-cooled design by integrating MOSFET and control, reducing board area by >30% vs. discrete solutions. |
| GU10 Spotlight | Solid-State Lighting Retrofit Module |
Use Scenario: Dimmable GU10 base lamp operating from 220–240VRMS (derated design) with TRIAC dimmer compatibility. IC Role / Device Role / Timing Role: Constant-on-time controller with programmable DLY delay to maintain stable dimming performance across line variations. Use Value: Maintains consistent LED current regulation and flicker-free operation down to 10% dim level without secondary feedback. |
Use Scenario: Retrofit driver for legacy halogen fixtures requiring 21V/350mA output with universal AC input (85–265VRMS). IC Role / Device Role / Timing Role: Configurable isolated flyback controller (MODE1=GND, MODE2=OPEN) supporting PCM for low-output-ripple operation. Use Value: Supports both COT (for PFC) and PCM (for ripple-sensitive applications) in same footprint - simplifies platform design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCC28810DR | Fixed-frequency CRM controller without integrated MOSFET; requires external 600V switch and gate driver | Higher BOM count and layout complexity; better suited for >15W designs where discrete MOSFET thermal management is preferred | Select UCC28810DR when higher power (>12W) or custom MOSFET selection (e.g., SiC) is required |
| LNK306DG | Off-line switcher with 700V MOSFET but no ZCD or adaptive COT; uses frequency jittering for EMI reduction | Lacks inherent PFC and valley switching - requires additional circuitry for >0.9 PF; lower efficiency at light loads | Choose LNK306DG only for cost-sensitive, non-PFC-compliant applications below 5W |
Compared with UCC28810DR and LNK306DG, the TPS92311DR/NOPB uniquely integrates 600V MOSFET, ZCD-based valley switching, and adaptive COT in one SOIC-16 package - delivering PFC compliance, lower EMI, and reduced component count for 5–8W LED lamps.
Availability
TPS92311DR/NOPB is available at Aetrix Electronics and suitable for A19 lamp design, PAR30/38 retrofit modules, and GU10 spotlight applications requiring stable component supply, long-lifecycle support, and automotive-grade reliability screening.
Supply support for TPS92311DR/NOPB 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 specializing in analog, embedded processing, and power management technologies, with decades of expertise in LED driver innovation and energy-efficient power conversion.
The TPS92311DR/NOPB belongs to TI's offline LED driver product line, engineered specifically for cost-sensitive, high-PF, primary-side regulated lighting applications under 10W - targeting residential and commercial retrofit lamps.
FAQ
What is the maximum continuous LED output power supported by the TPS92311DR/NOPB?
The TPS92311DR/NOPB is rated for up to 8W LED output in typical applications, as validated in the datasheet's design example driving seven 350mA LEDs at 21V. Its thermal limit (125°C max junction temperature) and 3.75Ω RDS(on) constrain practical continuous power to ≤8W with standard SOIC-16N PCB thermal relief. Higher power requires derating or forced-air cooling.
How does the TPS92311DR/NOPB achieve power factor correction without a dedicated PFC controller?
The TPS92311DR/NOPB achieves >0.9 power factor inherently through adaptive constant-on-time (COT) control in critical conduction mode (CRM). By synchronizing MOSFET turn-on with valley switching (via ZCD) and modulating tON per half-cycle, it shapes input current to closely follow the sinusoidal AC voltage - eliminating need for boost-stage PFC controllers.
Can the TPS92311DR/NOPB be used in non-isolated topologies?
Yes - the TPS92311DR/NOPB supports non-isolated buck-boost configurations when MODE1 is left open and MODE2 is grounded (per Table 1). In this mode, it uses constant-on-time control with 0.64V ISNS OCP threshold, enabling higher efficiency and simpler magnetics than isolated flyback - ideal for low-cost, space-constrained LED tubes.
What is the function of the DLY pin on the TPS92311DR/NOPB, and how is it configured?
The DLY pin on the TPS92311DR/NOPB sets the delay between ZCD trigger and MOSFET turn-on to align switching with resonant valley. It sources 250µA into an external resistor to ground; RDLY = VDLY/IDLY ≈ 1.23V/250µA. For example, 6.3kΩ yields ~300ns delay - optimized for typical 1mH LP and 37pF CDS resonance.
Does the TPS92311DR/NOPB require an optocoupler for feedback in isolated designs?
No - the TPS92311DR/NOPB performs primary-side regulation using ZCD-based timing and ISNS current sensing, eliminating the need for optocouplers, TL431 references, or secondary-side feedback networks. This reduces component count, improves reliability, and avoids optocoupler aging-related drift in long-life LED lamp applications.
TPS92311DR/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- AC DC Offline Switcher
- Topology:
- Flyback
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 13V
- Voltage - Supply (Max):
- 36V
- Voltage - Output:
- -
- Current - Output / Channel:
- -
- Frequency:
- 60kHz ~ 150kHz
- Dimming:
- -
- Applications:
- -
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
TPS92311DR/NOPB FAQ
1.How can I place an order for TPS92311DR/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS92311DR/NOPB 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 TPS92311DR/NOPB reliable?
The price and inventory of TPS92311DR/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS92311DR/NOPB is usually 5 days.
3.What payment methods are accepted for TPS92311DR/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS92311DR/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS92311DR/NOPB?
TPS92311DR/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS92311DR/NOPB 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 TPS92311DR/NOPB?
For technical support, including TPS92311DR/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS92311DR/NOPB requirements.
6.How does Aetrix verify that TPS92311DR/NOPB is sourced from the original manufacturer or authorized distributors?
All TPS92311DR/NOPB 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 TPS92311DR/NOPB meets industry standards.
7.What is the process for return or replacement of TPS92311DR/NOPB?
All TPS92311DR/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with TPS92311DR/NOPB, 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 TPS92311DR/NOPB part is unused and in its original packaging.
Return procedure for TPS92311DR/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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