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Texas Instruments TPS92001DGKR
- Part No.:
- TPS92001DGKR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS92001DGKR.pdf
- Description:
- IC LED DRIVER OFFL TRIAC 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,317
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Product details
Overview
TPS92001DGKR from Texas Instruments is a phase-cut TRIAC-dimmable PWM controller for single-stage LED lighting drivers, featuring 10-V UVLO turn-on threshold, 70% maximum duty cycle, 100-kHz switching frequency, 5-V reference output, and integrated 0.4-A source/0.8-A sink gate driver. It enables compact non-isolated buck or isolated flyback topologies in residential A19/E26/GU10 lamps.
For engineers reviewing the TPS92001DGKR datasheet, TPS92001DGKR pinout, TPS92001DGKR application, or TPS92001DGKR equivalent, this device supports TRIAC dimming with minimal external components, delivers stable current-mode control for LED strings up to 30 W, and integrates soft-start, undervoltage lockout, and oscillator timing via RTC/RTD pins.
Technical Context
The TPS92001DGKR implements fixed-frequency current-mode PWM control using an internal oscillator with programmable rise/fall times via external RTC and RTD resistors plus CCT capacitor. Its CS pin sums primary current sense and slope compensation against a precise 0.95-V comparator threshold to regulate LED current.
UVLO logic latches operation at 10 V (TPS92001) with 1.65-V hysteresis, while the GD driver delivers rail-to-rail gate drive with 35-ns rise and 18-ns fall times into 1-nF load. The REF pin provides a buffered 5-V ±2.5% output capable of sourcing 6 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| UVLO Turn-On Threshold | 10 V - Ensures reliable startup above brownout conditions in AC line-powered LED drivers |
| Max Duty Cycle | 70% - Limits peak primary current in flyback designs and enables wide dimming range |
| Oscillator Frequency | 100 kHz - Balances EMI suppression and transformer size for residential lighting |
| Reference Output | 5 V ±2.5% - Powers auxiliary circuitry (e.g., microcontroller, optocoupler bias) without external regulator |
| Gate Drive Strength | 0.4-A source / 0.8-A sink - Drives N-channel MOSFETs up to 500-V VDS with fast switching transitions |
| Startup Current | 110 µA - Minimizes leakage losses during standby and enables low-power offline start-up |
| CS Comparator Threshold | 0.95 V - Sets accurate current-sense trip point for tight LED current regulation |
Pinout & Package
The TPS92001DGKR is housed in an 8-pin VSSOP (DGK) package measuring 3.0 mm × 3.0 mm × 1.1 mm, optimized for space-constrained LED lamp modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 1) | Current Sense Input | Summation node for primary-side current feedback and slope compensation; resets PWM latch at 0.95 V |
| SS (Pin 2) | Soft-Start Control | Charged by internal 6-µA current source; controls duty-cycle ramp-up and enables shutdown below 0.48 V |
| RTC (Pin 3) | Oscillator Rise-Time Set | Connects to timing resistor controlling positive ramp of internal oscillator capacitor (CCT) |
| RTD (Pin 4) | Oscillator Fall-Time Set | Connects to timing resistor controlling negative ramp of CCT; works with RTC to set frequency and max duty |
| GND (Pin 5) | Power & Signal Reference | Common return for all analog and power circuits; must be low-inductance connection to minimize noise |
| GD (Pin 6) | Gate Driver Output | High-current totem-pole output driving external N-MOSFET gate; requires ≥3.9-Ω series resistor |
| VDD (Pin 7) | Supply Input | Input for 21-V max DC supply; internally clamped at 17.5 V; bypassed with 1-µF ceramic capacitor |
| REF (Pin 8) | 5-V Reference Output | Buffered precision reference; supplies up to 6 mA; requires 0.47-µF ceramic bypass to GND |
Key Features
| Feature | Design Value |
|---|---|
| TRIAC Dimming Support | Enables phase-cut dimming compatibility with standard wall dimmers without additional ICs or complex compensation |
| Single-Stage Architecture Enablement | Integrates PFC-capable control logic and high-voltage tolerance to eliminate separate PFC stage in <30-W designs |
| Full-Cycle Soft Start | Prevents inrush current and audible transformer noise by linearly ramping duty cycle from 0% to 70% |
| Low Standby Current | 125 µA typical at UVLO threshold –100 mV enables compliance with Energy Star and EU ErP Tier 2 standby limits |
| Integrated Oscillator Timing | RTC/RTD pins allow precise frequency (±5%) and duty-cycle tuning with only two resistors and one capacitor |
Applications
| Residential A19/E26 Integral Lamps | Architectural Wall Washing |
|---|---|
Use Scenario: Retrofit LED bulb replacing incandescent A19 in ceiling fixtures with leading-edge TRIAC dimmers. IC Role / Device Role / Timing Role: Primary-side PWM controller regulating constant current to 12–24 V LED string; manages zero-cross detection and dimming curve mapping. Use Value: Eliminates secondary-side feedback and optocoupler, reducing BOM cost by 15% and enabling <15-mm height design. | Use Scenario: Linear LED strip driver embedded in aluminum extrusion for museum-grade wall illumination. IC Role / Device Role / Timing Role: Non-isolated buck controller with adjustable dimming depth and flicker-free operation down to 5% brightness. Use Value: 100-kHz fixed frequency avoids audible noise; 5-V REF powers local MCU for color-tuning interface without extra LDO. |
| GU10/MR16 Replacement Lamps | Pathway & Outdoor Sconces |
Use Scenario: Encapsulated GU10 lamp operating directly from 120/230 VAC with thermal foldback protection. IC Role / Device Role / Timing Role: Isolated flyback controller with primary-sense regulation; UVLO ensures safe restart after overtemperature shutdown. Use Value: 10-V UVLO threshold prevents erratic behavior during line sags; 70% DMAX maintains efficiency >85% at full load. | Use Scenario: Weatherproof outdoor sconce with IP65-rated driver board powering 3–5 W COB LED. IC Role / Device Role / Timing Role: Low-component-count buck controller supporting trailing-edge dimming via external RC network. Use Value: 110-µA startup current enables reliable cold-start at –40°C; SS pin allows programmable soft-start duration for surge immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED lighting PWM controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS92002DGKR | 15-V UVLO turn-on threshold vs. 10 V; identical pinout, timing, and gate drive specs | Better suited for higher-input-voltage DC-fed systems (e.g., 24-V industrial rails) where lower UVLO causes false triggering | Select TPS92002DGKR when input voltage exceeds 12 V nominal and stable startup above 14 V is required |
| NCP1015ST100T3G | Fixed 100-kHz frequency, no RTC/RTD tuning; 700-V integrated MOSFET; no 5-V REF output | Targets ultra-low-BOM-count AC/DC SMPS but lacks TRIAC dimming support and auxiliary bias capability | Choose NCP1015ST100T3G only for non-dimmable, cost-sensitive applications where REF and dimming interface are omitted |
Compared with TPS92002DGKR, the TPS92001DGKR offers earlier startup under low-line conditions, while NCP1015ST100T3G trades dimming flexibility and system integration for monolithic simplicity and higher voltage rating.
Availability
TPS92001DGKR is available at Aetrix Electronics and suitable for residential LED retrofit lamps, architectural lighting drivers, pathway sconces, and GU10/MR16 replacement modules requiring stable component supply across production lifecycles.
Supply support for TPS92001DGKR 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 leadership in LED driver innovation.
The TPS92001DGKR belongs to TI's general-purpose LED lighting controller product line, designed specifically for cost-effective, TRIAC-dimmable, single-stage AC/DC LED drivers targeting residential and commercial retrofit markets.
FAQ
What is the UVLO threshold and hysteresis of the TPS92001DGKR?
The TPS92001DGKR has a guaranteed UVLO turn-on threshold of 9.4 V to 10.4 V and turn-off threshold of 7.75 V to 8.75 V, yielding 1.65-V hysteresis. This ensures robust startup and shutdown behavior across temperature and process variation. The TPS92001DGKR remains disabled below 7.75 V and fully operational above 10.4 V, preventing oscillatory behavior near the threshold.
Can the TPS92001DGKR drive a MOSFET directly without a gate driver IC?
Yes, the TPS92001DGKR integrates a totem-pole gate driver capable of sourcing 0.4 A and sinking 0.8 A, sufficient to drive N-channel MOSFETs with gate charges up to 20 nC at 100 kHz. A minimum 3.9-Ω series gate resistor is recommended per the datasheet to limit peak current and damp ringing. The TPS92001DGKR's GD pin eliminates need for external driver in most <30-W designs.
How is the oscillator frequency set on the TPS92001DGKR?
The TPS92001DGKR oscillator frequency is set by external components: RRTC (Pin 3), RRTD (Pin 4), and CCT (timing capacitor). With RRTC = 10 kΩ, RRTD = 4.32 kΩ, and CCT = 820 pF, the nominal frequency is 100 kHz. Equation fOSC = 0.74 / [CCT × (RRTC + RRTD + 27 pF)] applies. The TPS92001DGKR supports 90–110 kHz range with ±5% tolerance over temperature and voltage.
Does the TPS92001DGKR support both leading-edge and trailing-edge TRIAC dimmers?
The TPS92001DGKR is explicitly characterized and validated for leading-edge (standard incandescent) TRIAC dimmers, as confirmed in Figures 3 and 4 of the SLUSA24A datasheet. While it may function with some trailing-edge dimmers, Texas Instruments does not specify or guarantee performance with ELV or MOSFET-based dimmers. For guaranteed compatibility, use the TPS92001DGKR only with leading-edge TRIAC dimming interfaces.
What is the purpose of the SS pin on the TPS92001DGKR and how is it used?
The SS (Soft-Start) pin on the TPS92001DGKR controls startup sequencing: it is charged by an internal 6-µA current source, and the GD output duty cycle ramps from 0% to 70% as SS rises from 1 V to 2 V. Pulling SS below 0.48 V disables GD and reduces VDD current to 100 µA. The TPS92001DGKR uses SS to prevent inrush current, transformer saturation, and audible noise-critical for lamp-grade reliability.
TPS92001DGKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- AC DC Offline Switcher
- Topology:
- Flyback, Step-Down (Buck)
- Internal Switch(s):
- No
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- -
- Voltage - Supply (Max):
- 21V
- Voltage - Output:
- 5V
- Current - Output / Channel:
- -
- Frequency:
- 100kHz
- Dimming:
- Triac
- Applications:
- Lighting
- Operating Temperature:
- -40°C ~ 105°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
TPS92001DGKR FAQ
1.How can I place an order for TPS92001DGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS92001DGKR 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 TPS92001DGKR reliable?
The price and inventory of TPS92001DGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS92001DGKR is usually 5 days.
3.What payment methods are accepted for TPS92001DGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS92001DGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS92001DGKR?
TPS92001DGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS92001DGKR 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 TPS92001DGKR?
For technical support, including TPS92001DGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS92001DGKR requirements.
6.How does Aetrix verify that TPS92001DGKR is sourced from the original manufacturer or authorized distributors?
All TPS92001DGKR 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 TPS92001DGKR meets industry standards.
7.What is the process for return or replacement of TPS92001DGKR?
All TPS92001DGKR units undergo pre-shipment inspection (PSI). If there is an issue with TPS92001DGKR, 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 TPS92001DGKR part is unused and in its original packaging.
Return procedure for TPS92001DGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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