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Texas Instruments TPS92010DR
- Part No.:
- TPS92010DR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS92010DR.pdf
- Description:
- IC LED DRIVER OFFL 1A 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,789
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Product details
Overview
TPS92010DR from Texas Instruments is an 8-pin SOIC quasi-resonant offline LED lighting controller with primary-side regulation, 1-A sink / –0.75-A source TrueDrive™ gate output, programmable soft-start, and integrated cycle-by-cycle power limit. It operates across –40°C to 105°C and delivers high-efficiency constant-current drive for residential A19/E26 LED lamps.
For engineers reviewing the TPS92010DR datasheet, TPS92010DR pinout, TPS92010DR application, or TPS92010DR equivalent, key selection criteria include its QR/DCM/frequency-foldback multi-mode operation, VSD-based valley switching detection, LPM open-drain status signaling, FB-controlled mode transitions, and primary-side overvoltage protection architecture.
Technical Context
The TPS92010DR implements current-mode control with three distinct operating modes: quasi-resonant (QR) or DCM above 2.0 V FB (130 kHz max), frequency foldback (FFM) between 1.4–2.0 V FB (40–130 kHz), and burst-mode low-power operation below 0.5 V FB (40 kHz pulses). Mode transitions are governed by internal voltage thresholds on the FB pin and coordinated by the oscillator, QR detect, and fault logic blocks.
It integrates primary-side sensing via VSD (valley switching detect) and PCS (peak current sense) pins, enabling open-LED protection, line/load overvoltage shutdown, and cycle-by-cycle power limiting using a programmable RPL network. The 1-A sink / –0.75-A source GD output drives external MOSFETs directly without external buffers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology Support | Quasi-resonant flyback with primary-side regulation; no optocoupler or secondary-side feedback required |
| Max Switching Frequency | 130 kHz (clamped); enables high-efficiency operation at full load while minimizing EMI |
| Gate Drive Capability | 1-A sink / –0.75-A source TrueDrive™ output; directly drives medium-power MOSFETs without external drivers |
| FB Voltage Thresholds | QR mode: FB > 2.0 V; FFM: 1.4–2.0 V; Low-power burst: FB < 0.5 V; enables automatic light-load efficiency optimization |
| Startup Current | ≤25 μA maximum; allows use of high-impedance startup networks for ultra-low standby consumption |
| Operating Junction Temp | –40°C to 105°C; validated for enclosed residential LED lamp environments with limited airflow |
| Package | SOIC-8 (D); industry-standard footprint compatible with automated assembly and thermal relief design |
Pinout & Package
TPS92010DR is housed in an 8-pin SOIC (D) package with exposed pad not present; standard JEDEC MS-012AC outline, 1.75 mm height, 150°C solder reflow rating (MSL Level-1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SS (Pin 1) | Soft-start programming input | Capacitor-to-ground sets ramp rate; internal 6–8.3 μA charge current enables precise start-up timing and fault recovery |
| PCS (Pin 3) | Peak current sense & power limit input | Senses MOSFET current via external resistor; programs cycle-by-cycle power limit and overcurrent shutdown at 1.25 V threshold |
| FB (Pin 2) | Feedback voltage input | Controls operating mode (QR/FFM/LPM); internal 20-kΩ pullup enables direct connection to TL431 reference networks |
| VDD (Pin 6) | Supply input | Accepts 21–27 V DC; powers internal circuitry from auxiliary winding; includes 26-V clamp and UVLO (10.3–15.3 V) |
| GD (Pin 5) | Gate drive output | TrueDrive™ output with 1-A sink / –0.75-A source capability; clamped to 13 V for MOSFET gate protection |
| VSD (Pin 7) | Valley switching detect input | Detects resonant valley on primary bias winding; enables ZVS switching and provides line/load overvoltage fault signals |
| LPM (Pin 8) | Low-power mode indicator | Open-drain output pulled low during normal operation; high-impedance when device enters burst-mode low-power state |
| GND (Pin 4) | Ground reference | Common return for internal circuitry; requires 0.1-μF ceramic capacitor placed adjacent to VDD for stable operation |
Key Features
| Feature | Design Value |
|---|---|
| Quasi-resonant valley switching | Reduces EMI and switching losses by triggering GD at first resonant valley after demagnetization |
| Multi-mode efficiency optimization | Automatically transitions between QR, frequency foldback, and burst-mode to maintain >80% efficiency down to 10% load |
| Primary-side overvoltage protection | Uses VSD pin voltage (3.37–4.13 V threshold) and current (–450 μA threshold) to detect open-LED or overvoltage faults |
| Programmable soft-start | Internal 6–8.3 μA charge current enables adjustable start-up time via external SS capacitor; prevents inrush current |
| Integrated thermal shutdown | Triggers at 140°C junction temperature with 15°C hysteresis; forces GD off and discharges SS capacitor for safe recovery |
| TrueDrive™ gate output | Delivers 1-A sink / –0.75-A source peak current into MOSFET gate; eliminates need for external driver stages in ≤30-W designs |
Applications
| Residential A19/E26 LED Lamps | Architectural Wall Washing |
|---|---|
Use Scenario: Integrated driver in screw-base LED retrofit lamps for household lighting. IC Role / Device Role / Timing Role: Primary-side QR controller regulating constant current to LED string without optocoupler or secondary feedback. Use Value: Enables compact, cost-effective, UL Class II isolated designs meeting ENERGY STAR® requirements for standby < 0.5 W. |
Use Scenario: Constant-current driver powering long LED strips for accent lighting in retail or hospitality spaces. IC Role / Device Role / Timing Role: Multi-mode controller adapting switching frequency (130 kHz → 40 kHz burst) to maintain regulation across wide dimming range. Use Value: Delivers stable light output from 100% to 1% dim level with < ±3% current accuracy and no audible noise. |
| GU10/MR16 Integral Lamps | Pathway & Outdoor Sconces |
Use Scenario: Driver embedded in directional LED lamps for track or recessed lighting. IC Role / Device Role / Timing Role: VSD-based valley detection ensures zero-voltage switching across universal AC input (90–264 VAC) and temperature variation. Use Value: Achieves >85% efficiency at full load and < 0.3-W standby power, satisfying IEC 62384 and ERP Tier 2 requirements. |
Use Scenario: Weather-resistant driver powering outdoor LED fixtures subject to wide ambient temperature swings. IC Role / Device Role / Timing Role: Thermal shutdown (140°C) and overtemperature hysteresis (15°C) prevent thermal runaway in sealed enclosures. Use Value: Ensures reliable operation from –40°C to +105°C junction temperature without derating or forced cooling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED lighting controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCC28810DR | Fixed 65-kHz frequency; no QR valley detection; uses optocoupler feedback; lacks LPM pin and VSD functionality | Suitable for lower-cost, non-dimmable LED tubes where EMI filtering is less critical | Select UCC28810DR only if QR efficiency and primary-side regulation are not required |
| NCP1015ST | Fixed-frequency PWM controller; no multi-mode operation; no integrated power limit or VSD; requires external current sense amplifier | Used in basic AC/DC adapters and low-end LED drivers where cost dominates performance | Choose NCP1015ST only for non-isolated, low-power (<10 W), fixed-output applications without dimming support |
Compared with UCC28810DR and NCP1015ST, the TPS92010DR uniquely delivers quasi-resonant valley switching, primary-side regulation, and programmable low-power burst mode - enabling higher efficiency, smaller magnetics, and simpler BOMs in residential and architectural LED lighting.
Availability
TPS92010DR is available at Aetrix Electronics and suitable for residential LED lamp manufacturing, architectural lighting systems, and outdoor pathway fixture production requiring stable component supply and long-term lifecycle continuity.
Supply support for TPS92010DR 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 consumer applications.
The TPS92010DR belongs to TI's LED lighting controller product line, designed specifically for high-efficiency, primary-side regulated offline LED drivers targeting residential and commercial solid-state lighting markets.
FAQ
What is the function of the VSD pin on the TPS92010DR?
The VSD pin on the TPS92010DR senses the primary bias winding voltage to detect resonant valleys for zero-voltage switching, and simultaneously provides line and load overvoltage protection. When VSD exceeds 3.75 V or sources more than –450 μA, the TPS92010DR initiates a shutdown-retry cycle. This dual-purpose pin eliminates the need for secondary-side sensing in the TPS92010DR design.
Does the TPS92010DR require an optocoupler for feedback?
No, the TPS92010DR does not require an optocoupler. It implements primary-side regulation using the VSD and FB pins to infer output voltage and current indirectly from the transformer bias winding and reflected waveforms. This simplifies isolation design, reduces BOM cost, and improves reliability compared to secondary-feedback topologies using the TPS92010DR.
How does the TPS92010DR achieve low standby power?
The TPS92010DR achieves low standby power through three mechanisms: sub-25-μA startup current, automatic transition to burst-mode low-power operation (40 kHz pulses) when FB falls below 0.5 V, and internal circuitry disabling non-essential blocks during light-load conditions. These features enable TPS92010DR-based designs to meet ENERGY STAR® and ERP Tier 2 standby power requirements.
What protection features are integrated into the TPS92010DR?
The TPS92010DR integrates cycle-by-cycle power limit (via PCS pin), primary-side overvoltage protection (via VSD pin), undervoltage lockout (UVLO on VDD), thermal shutdown (140°C), and open-LED detection. All protections trigger controlled shutdown with automatic retry after fault clearance - no external circuitry is needed to implement robust safety in TPS92010DR-based LED drivers.
Can the TPS92010DR be used in dimmable LED lamp designs?
Yes, the TPS92010DR supports analog and PWM dimming through FB pin voltage modulation. As FB decreases from 4.8 V to 0.5 V, the controller automatically shifts from QR mode to frequency foldback and finally to burst-mode low-power operation - maintaining tight current regulation across the full dimming range. This behavior is fully characterized and validated in TPS92010DR reference designs.
TPS92010DR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- TrueDrive™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- AC DC Offline Switcher
- Topology:
- Flyback
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- -
- Voltage - Supply (Max):
- 21V
- Voltage - Output:
- -
- Current - Output / Channel:
- 1A
- Frequency:
- -
- Dimming:
- -
- Applications:
- Lighting
- Operating Temperature:
- -40°C ~ 105°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TPS92010DR FAQ
1.How can I place an order for TPS92010DR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS92010DR 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 TPS92010DR reliable?
The price and inventory of TPS92010DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS92010DR is usually 5 days.
3.What payment methods are accepted for TPS92010DR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS92010DR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS92010DR?
TPS92010DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS92010DR 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 TPS92010DR?
For technical support, including TPS92010DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS92010DR requirements.
6.How does Aetrix verify that TPS92010DR is sourced from the original manufacturer or authorized distributors?
All TPS92010DR 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 TPS92010DR meets industry standards.
7.What is the process for return or replacement of TPS92010DR?
All TPS92010DR units undergo pre-shipment inspection (PSI). If there is an issue with TPS92010DR, 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 TPS92010DR part is unused and in its original packaging.
Return procedure for TPS92010DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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