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Texas Instruments TPS92561DGNR
- Part No.:
- TPS92561DGNR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
TPS92561DGNR.pdf
- Description:
- IC LED DRIVER OFFL TRIAC 8HVSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,497
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Product details
Overview
TPS92561DGNR from Texas Instruments is a phase-dimmable, single-stage boost LED controller for off-line lighting applications. It implements hysteretic current-mode control with fixed 29.3 mV (typ) VSEN hysteresis, supports TRIAC and reverse-phase dimmers, delivers >90% efficiency and >0.9 power factor, and drives high-voltage, low-current LED strings in A19, PAR30, and MR16 lamp replacements.
For engineers reviewing the TPS92561DGNR datasheet, TPS92561DGNR pinout, TPS92561DGNR application, or TPS92561DGNR equivalent, key selection criteria include its 8-pin HVSSOP package, programmable OVP threshold (1.19 V typ), integrated VCC LDO (8.35 V typ), thermal shutdown at 165°C, and gate driver capable of 8.71 V high-side output swing referenced to SRC.
Technical Context
The TPS92561DGNR uses a fixed-offset current-sense comparator to implement hysteretic control-eliminating loop compensation and enabling stable operation across wide input and output voltage ranges. Its ADJ pin accepts either rectified AC (for high PF/low THD) or LED+ voltage (for line regulation), while the SEN pin requires an external RC filter to set effective hysteresis for off-line operation.
It integrates a 8.35 V (typ) VCC regulator powered from VP (6.5–42 V), gate driver with 100 mA sink/source capability, overvoltage protection triggered by resistor-divider feedback to OVP pin, and thermal shutdown with 30°C hysteresis. No additional hold-current circuitry is needed for TRIAC dimming due to continuous input current draw.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Regulated Voltage | 8.35 V (typ); powers internal circuitry and gate driver; stable across VP = 6.5–42 V |
| VSEN Hysteresis | 60 mV (typ); sets inductor peak-to-peak current ripple; determines switching frequency spread |
| OVP Threshold | 1.19 V (typ); triggers shutdown when divided LED+ voltage exceeds threshold; 44 mV hysteresis prevents chatter |
| GATE High Output | 8.71 V (typ) above SRC; ensures full enhancement of low-side N-channel FET with ≥75 Ω gate resistance |
| Thermal Shutdown | 165°C (rising); protects against sustained overload; 30°C hysteresis enables automatic recovery |
| Operating Junction Temp | –40°C to +125°C; validated for enclosed lamp environments and industrial ambient conditions |
| Package | HVSSOP-8 (3.0 mm × 3.0 mm); exposed PowerPAD™ improves thermal performance to 44.8°C/W (J-B) |
Pinout & Package
HVSSOP-8 (DGN) package with 3.00 mm × 3.00 mm body size and thermally enhanced PowerPAD™ connected to GND for improved heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GATE (1) | Gate driver output | Drives low-side N-channel FET gate; requires ≥75 Ω series resistance for off-line EMI control |
| SRC (2) | Source return | Connects to FET source; provides Kelvin sense path to avoid switching noise injection into SEN |
| VCC (3) | VCC regulator output | Powers internal logic and gate driver; decoupled with ≥0.47 µF capacitor to SRC |
| SEN (4) | Current sense input | Accepts filtered voltage across RSENSE; hysteresis window defines inductor ripple and switching frequency |
| GND (5) | Ground reference | System ground plane connection; PowerPAD™ must be soldered to GND for thermal integrity |
| ADJ (6) | Reference input | Sets LED current via voltage divider from rectified AC (high PF) or LED+ (line regulation) |
| OVP (7) | Overvoltage sense | Monitors LED+ via resistor divider; trips at 1.19 V (typ); 44 mV hysteresis enables safe restart |
| VP (8) | Bias supply input | Accepts 6.5–42 V DC bias; powers VCC LDO and gate driver; max 1.6 mA quiescent current |
Key Features
| Feature | Design Value |
|---|---|
| Hysteretic control architecture | Eliminates loop compensation components and stability analysis; enables robust operation across 90–265 VAC input range |
| TRIAC dimmer compatibility | Continuous input current draw eliminates need for external hold circuitry; supports standard leading-edge dimmers |
| Integrated VCC LDO and gate driver | Reduces external BOM count by 3–5 components; 8.71 V gate drive ensures reliable FET turn-on at high junction temperatures |
| Programmable OVP with hysteresis | Prevents LED string overvoltage damage during open-circuit or thermal foldback; 44 mV hysteresis avoids oscillation near trip point |
| Thermal shutdown with hysteresis | 165°C trip with 30°C recovery gap enables self-resetting fault protection without system-level intervention |
Applications
| Residential LED Lamps | Commercial Downlights |
|---|---|
Use Scenario: Retrofit A19 and PAR30 bulbs replacing incandescent lamps in residential ceiling fixtures with TRIAC wall dimmers. IC Role / Device Role / Timing Role: Boost controller regulating constant LED current while tracking phase-cut AC waveform for smooth dimming. Use Value: Achieves >0.9 power factor and <20% THD without active PFC stage; reduces EMI filter size by leveraging continuous input current. | Use Scenario: Integrated downlight modules in office ceilings requiring non-flicker dimming and high lumen maintenance. IC Role / Device Role / Timing Role: Single-stage boost controller delivering regulated current to 48 V LED strings with thermal foldback at 125°C junction. Use Value: Enables compact form factor via 3 mm × 3 mm HVSSOP package and >90% efficiency-reducing heatsink mass and system cost. |
| Industrial High-Bay Lighting | MR16/GU10 Retrofit Modules |
Use Scenario: High-lumen industrial fixtures operating in ambient temperatures up to 65°C with 0–10 V or DALI secondary control. IC Role / Device Role / Timing Role: Primary LED current controller; ADJ pin configured for LED+ feedback to maintain regulation under wide output voltage variation. Use Value: Maintains ±3% LED current accuracy across –40°C to +125°C junction range; thermal shutdown prevents catastrophic failure during prolonged overload. | Use Scenario: Low-profile MR16 and GU10 lamps replacing halogen sources in track and display lighting with legacy dimmers. IC Role / Device Role / Timing Role: Phase-dimmable boost controller driving 36 V LED strings with integrated OVP protecting against open-circuit LED failure. Use Value: Eliminates need for separate OVP IC or crowbar circuit; 1.19 V OVP threshold allows precise 220 V LED+ protection using 1.6 MΩ/100 kΩ divider. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED boost controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS92630DGNR | Includes integrated 600 V MOSFET; no external FET required; lower max output power (~25 W vs 40 W) | Targeted at lower-power GU10 and candle lamps; lacks programmable OVP and ADJ flexibility | Choose for simplified layout and reduced component count in sub-25 W designs where integrated FET suffices |
| NCL30001DR2G | Fixed-frequency CCM controller; requires external compensation; higher BOM count; 0.95 PF typical | Designed for high-PF commercial troffers; supports larger inductors and higher power (60 W+) | Choose when strict THD <10% and EMI compliance require deterministic switching frequency and active PFC pre-regulation |
Compared with TPS92561DGNR, TPS92630DGNR reduces board area but sacrifices design flexibility and OVP precision, while NCL30001DR2G offers superior PF/THD at the cost of complexity and higher component count-making TPS92561DGNR optimal for cost-sensitive, TRIAC-dimmable mid-power lamps.
Availability
TPS92561DGNR is available at Aetrix Electronics and suitable for residential LED retrofits, commercial downlights, and industrial high-bay lighting requiring stable component supply and long-term production continuity.
Supply support for TPS92561DGNR 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, embedded processing, and power management technologies, with leadership in LED driver innovation since 2008.
The TPS92561DGNR belongs to TI's phase-dimmable LED controller product line, designed specifically for cost-optimized, single-stage boost topologies in TRIAC-compatible retrofit lamps and solid-state lighting modules.
FAQ
What is the recommended gate resistance for TPS92561DGNR in off-line applications?
The TPS92561DGNR datasheet specifies a minimum gate resistance of ≥75 Ω for off-line applications. This value balances EMI reduction-by slowing FET switching edges-and gate driver thermal stress. Using less than 75 Ω risks excessive radiated emissions and may exceed the gate driver's 100 mA sink capability during fast transitions. The TPS92561DGNR gate driver output high is 8.71 V (typ) referenced to SRC, ensuring reliable FET turn-on even with this resistance.
How does TPS92561DGNR achieve high power factor without a dedicated PFC stage?
The TPS92561DGNR achieves >0.9 power factor by connecting the ADJ pin to a resistor divider from the rectified AC line. This causes the inductor current to closely follow the sinusoidal input voltage waveform, resulting in naturally high PF and low THD. Unlike traditional PFC controllers, the TPS92561DGNR uses hysteretic control with VSEN hysteresis (60 mV typ) to shape current without multiplier circuits or error amplifiers-enabling single-stage operation. This behavior is intrinsic to the TPS92561DGNR architecture and verified across 90–265 VAC inputs.
Can TPS92561DGNR be used in non-dimming applications?
Yes, the TPS92561DGNR supports non-dimming configurations by connecting the ADJ pin to a stable DC reference-such as a Zener-regulated voltage derived from LED+-to provide fixed current regulation. In this mode, it maintains >90% efficiency and >0.9 PF when paired with appropriate input filtering. The TPS92561DGNR retains all protections (OVP, thermal shutdown, VCC UVLO) and operates identically in dimming and non-dimming modes; only the ADJ source changes. Its datasheet explicitly lists "Off-Line Non-Dimmable Lamps" as a primary application.
What is the purpose of the RC filter on the SEN pin of TPS92561DGNR?
Because the TPS92561DGNR lacks leading-edge blanking, the SEN pin RC filter (e.g., 1–4.7 nF capacitor with series resistor) suppresses switching noise and diode-reverse-recovery spikes that would otherwise cause false triggering of the current-sense comparator. The filter corner frequency is typically set near the peak switching frequency (e.g., 65 kHz) to preserve hysteretic control fidelity. Without this filter, the TPS92561DGNR may exhibit erratic switching or fail to start-especially during bulk-capacitor charging at power-up. This requirement is documented in Section 7.3.3 of the TPS92561DGNR datasheet.
Does TPS92561DGNR support short-circuit protection for the LED string?
No, the TPS92561DGNR does not implement LED short-circuit protection due to the inherent limitations of boost topology. When the LED string shorts, output voltage collapses and the controller continues switching at maximum duty cycle, potentially overheating the external FET and inductor. TI explicitly states in Section 7.3.4 that "output short circuit protection…requires a blocking switch or other means…not commonly used." Designers must use an input fuse or upstream current-limiting circuit for fault protection. This limitation applies to all boost-based controllers, including the TPS92561DGNR.
TPS92561DGNR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- AC DC Offline Switcher
- Topology:
- Step-Up (Boost)
- Internal Switch(s):
- No
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 6.5V
- Voltage - Supply (Max):
- 42V
- Voltage - Output:
- -
- Current - Output / Channel:
- -
- Frequency:
- -
- Dimming:
- Triac
- Applications:
- Lighting
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-HVSSOP
TPS92561DGNR FAQ
1.How can I place an order for TPS92561DGNR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS92561DGNR 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 TPS92561DGNR reliable?
The price and inventory of TPS92561DGNR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS92561DGNR is usually 5 days.
3.What payment methods are accepted for TPS92561DGNR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS92561DGNR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS92561DGNR?
TPS92561DGNR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS92561DGNR 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 TPS92561DGNR?
For technical support, including TPS92561DGNR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS92561DGNR requirements.
6.How does Aetrix verify that TPS92561DGNR is sourced from the original manufacturer or authorized distributors?
All TPS92561DGNR 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 TPS92561DGNR meets industry standards.
7.What is the process for return or replacement of TPS92561DGNR?
All TPS92561DGNR units undergo pre-shipment inspection (PSI). If there is an issue with TPS92561DGNR, 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 TPS92561DGNR part is unused and in its original packaging.
Return procedure for TPS92561DGNR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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