My Inquiry
My Account
Texas Instruments TPS92315DBVR
- Part No.:
- TPS92315DBVR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- SOT-23-6
- Datasheet:
-
TPS92315DBVR.pdf
- Description:
- IC LED DRIVER OFFL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,057
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS92315DBVR from Texas Instruments is an off-line primary-side sensing flyback controller for isolated LED drivers, delivering ±5% LED current regulation without opto-couplers. It operates from 85–264VAC input, supports quasi-resonant valley switching up to 130 kHz, and integrates gate drive for external MOSFETs in SOT-23-6 package - enabling compact, high-efficiency SSL drivers for GU-10 and E14 bulbs.
For engineers reviewing the TPS92315DBVR datasheet, TPS92315DBVR pinout, TPS92315DBVR application, or TPS92315DBVR equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternative options, and supply-ready availability details - all grounded in TI's SNVS904A datasheet and official product documentation.
Technical Context
The TPS92315DBVR implements primary-side regulation (PSR) by sampling auxiliary winding voltage (VSNS) at transformer demagnetization zero-crossing to infer output voltage, while monitoring peak primary current via ISNS to regulate LED current. Its control law combines frequency modulation (1–130 kHz) and amplitude modulation of IPP to maintain efficiency across full load and line range.
Valley-switching detection uses VSNS timing waveform to trigger GATE at minimum drain-source voltage, reducing switching losses and EMI. Protection includes cycle-by-cycle over-current (ISNS ≥1.5 V), over-voltage (VSNS ≥4.6 V), low-line shutdown (VSNS run/stop currents: 220 µA / 80 µA), and thermal shutdown at 165°C - all enforced with UVLO reset recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 85–264VAC input compatibility enables universal mains operation without redesign. |
| LED Current Accuracy | ±5% regulation tolerance ensures consistent lumen output across temperature and line variations. |
| Max Switching Frequency | 130 kHz maximum enables small magnetics and high power density in space-constrained bulbs. |
| GATE Drive Capability | 25 mA source / 6 Ω pull-down supports fast MOSFET turn-on and controlled dv/dt during turn-off. |
| VCC Operating Range | 9–35 V wide bias range allows minimal start-up capacitor (0.047 µF) and high-value start resistor. |
| VSNS Regulation Voltage | 4.05 V internal reference enables precise output voltage inference from auxiliary winding ratio. |
| ISNS Threshold Range | 230–270 mV min / 715–775 mV max supports feed-forward line compensation via RLC. |
| Thermal Shutdown | 165°C junction limit protects MOSFET and transformer under sustained overload or poor heatsinking. |
Pinout & Package
SOT-23-6 package (DBV) with exposed pad for thermal relief; 6-pin surface-mount footprint compatible with standard pick-and-place and reflow processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DNC (Pin 1) | Do Not Connect | Factory test pin; must remain unconnected in all end applications to avoid malfunction. |
| VCC (Pin 2) | Bias Supply Input | UVLO turn-on at 21 V / turn-off at 8.1 V; bypassed with 0.047–1 µF capacitor near GND for stable operation. |
| GATE (Pin 3) | MOSFET Gate Driver Output | 14 V clamped, 25 mA sourced turn-on; 6 Ω internal pull-down enables controlled MOSFET turn-off. |
| ISNS (Pin 4) | Primary Peak Current Sense Input | 0.25–0.75 V sensing range; 235 ns leading-edge blanking rejects turn-on spikes; supports line compensation via RLC. |
| GND (Pin 5) | Analog & Power Ground Reference | Single-point return for VCC bypass, VSNS, ISNS, and GATE drive; requires short, low-inductance trace to minimize noise coupling. |
| VSNS (Pin 6) | Auxiliary Winding Feedback Input | Samples demagnetization voltage for output voltage inference; senses bulk voltage for line-run/stop (220 µA / 80 µA thresholds). |
Key Features
| Feature | Design Value |
|---|---|
| Primary-Side Regulation (PSR) | Eliminates opto-coupler and secondary-side feedback components, reducing BOM count and cost by ~30% in GU-10 designs. |
| Quasi-Resonant Valley Switching | Reduces MOSFET switching loss and EMI emissions, enabling Class B compliance without complex filtering in bulb form factors. |
| Patent-Pending Frequency Jitter | Spreads spectral energy around fundamental and harmonics, easing EMI filter design and lowering component count. |
| Integrated Protection Suite | Enables robust field operation: OV, UV, OC, thermal, and VSNS/ISNS fault detection with automatic UVLO restart recovery. |
| Wide VCC Range (9–35 V) | Permits use of high-value start-up resistor and tiny VCC capacitor, cutting no-load power to <300 mW in E14 applications. |
Applications
| GU-10 LED Retrofit Bulbs | E14 Candle-Style LED Lamps |
|---|---|
|
Use Scenario: Compact directional lamp replacing halogen GU-10 with integrated driver in tight thermal envelope. IC Role / Device Role / Timing Role: Primary-side controller regulating constant current to 3–4 series LEDs while inferring output voltage from auxiliary winding. Use Value: Enables full isolation and ±5% current accuracy in <12 mm height, eliminating opto-coupler and TL431. |
Use Scenario: Small-form-factor decorative lamp operating directly from 85–264VAC with minimal PCB area. IC Role / Device Role / Timing Role: Valley-switching flyback controller managing MOSFET gate drive, primary current sensing, and auxiliary timing feedback. Use Value: Achieves <300 mW no-load power and >85% efficiency at 5 W output using only 6 external passives. |
| Dimmable AC-DC LED Drivers | Low-Cost Isolated LED Modules |
|
Use Scenario: Leading-edge TRIAC-dimmable driver for residential lighting with flicker-free performance. IC Role / Device Role / Timing Role: PSR controller adapting switching frequency and peak current to maintain regulation during dimmer conduction angle changes. Use Value: Maintains stable LED current down to 10% dim level without secondary feedback loop instability. |
Use Scenario: OEM module for smart ceiling fixtures requiring certified, isolated, low-BOM LED power stage. IC Role / Device Role / Timing Role: Integrated protection and regulation engine handling over-voltage, over-current, and thermal faults autonomously. Use Value: Reduces qualification time by embedding safety-critical protections into single IC instead of discrete supervision circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCC28810DR | Fixed-frequency DCM controller (66 kHz); no valley switching; requires external OVP comparator. | Lacks quasi-resonant operation and integrated OV/OC protection; needs more external components for same safety rating. | Choose when fixed-frequency EMI profile is preferred and board space allows extra protection ICs. |
| NCP1015ST65T3G | Fixed-frequency PWM controller (65 kHz); no PSR - requires opto-coupler + TL431 for regulation. | Higher BOM count and larger footprint; cannot achieve same size reduction in GU-10/E14 form factors. | Choose only if legacy opto-based design reuse is mandatory and ±5% current accuracy is not required. |
Compared with UCC28810DR and NCP1015ST65T3G, the TPS92315DBVR delivers higher integration (no opto, no external OVP), superior efficiency via valley switching, and tighter current regulation - making it the optimal choice for space- and efficiency-constrained SSL drivers where BOM simplification is critical.
Availability
TPS92315DBVR is available at Aetrix Electronics and suitable for GU-10 LED retrofit bulbs, E14 candle-style lamps, and TRIAC-dimmable AC-DC LED drivers requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS92315DBVR 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 ICs, with decades of expertise in LED driver innovation and reliability validation.
The TPS92315DBVR belongs to TI's off-line LED controller product line, engineered specifically for compact, isolated, primary-side regulated SSL drivers targeting residential and commercial retrofit lighting applications.
FAQ
What is the primary function of the TPS92315DBVR in an LED driver design?
The TPS92315DBVR serves as a primary-side sensing flyback controller that regulates LED current and output voltage without opto-couplers. It samples auxiliary winding voltage (VSNS) at transformer demagnetization to infer output conditions and monitors peak primary current (ISNS) to enforce ±5% LED current accuracy - enabling fully isolated, compact, and cost-optimized drivers for GU-10 and E14 bulbs. The TPS92315DBVR integrates gate drive, protection, and valley-switching control in one SOT-23-6 IC.
Does the TPS92315DBVR require an opto-coupler for feedback?
No, the TPS92315DBVR eliminates the need for an opto-coupler by implementing primary-side regulation (PSR). It derives output voltage information from the VSNS pin connected to an auxiliary winding on the flyback transformer and regulates LED current using the ISNS pin to sense primary-side current. This architecture reduces component count, improves reliability, and shrinks PCB area - confirmed in TI's SNVS904A datasheet for the TPS92315DBVR.
What protection features are built into the TPS92315DBVR?
The TPS92315DBVR includes over-voltage protection (VSNS ≥4.6 V), over-current protection (ISNS ≥1.5 V), input under-voltage lockout (VCC turn-off at 8.1 V), thermal shutdown (165°C), and VSNS/ISNS pin fault detection. All protections trigger a UVLO reset and restart sequence - ensuring safe recovery without latching faults. These features are fully documented in the Electrical Characteristics and Fault Protection sections of the TPS92315DBVR datasheet (SNVS904A).
Can the TPS92315DBVR operate with TRIAC dimmers?
Yes, the TPS92315DBVR supports leading-edge TRIAC dimming through its adaptive frequency and amplitude modulation. As the dimmer conduction angle changes, the controller dynamically adjusts switching frequency and peak primary current to maintain stable LED current down to 10% dim level - without secondary feedback instability. This behavior is validated in TI's application notes and design examples for the TPS92315DBVR in dimmable SSL drivers.
What is the recommended VCC bypass capacitor value for the TPS92315DBVR?
The recommended VCC bypass capacitor for the TPS92315DBVR is 0.047 µF to 1 µF, placed as close as possible to the VCC and GND pins. TI specifies CVCC = 0.047 µF as the minimum value in Recommended Operating Conditions (SNVS904A), enabling low-noise biasing and stable startup - especially critical given the device's 21 V turn-on / 8.1 V turn-off UVLO thresholds. This value is confirmed for all TPS92315DBVR applications including E14 and GU-10 bulb designs.
TPS92315DBVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- AC DC Offline Switcher
- Topology:
- Flyback
- Internal Switch(s):
- No
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 9V
- Voltage - Supply (Max):
- 35V
- Voltage - Output:
- -
- Current - Output / Channel:
- -
- Frequency:
- 130kHz
- Dimming:
- -
- Applications:
- -
- Operating Temperature:
- -20°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
TPS92315DBVR FAQ
1.How can I place an order for TPS92315DBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS92315DBVR 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 TPS92315DBVR reliable?
The price and inventory of TPS92315DBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS92315DBVR is usually 5 days.
3.What payment methods are accepted for TPS92315DBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS92315DBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS92315DBVR?
TPS92315DBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS92315DBVR 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 TPS92315DBVR?
For technical support, including TPS92315DBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS92315DBVR requirements.
6.How does Aetrix verify that TPS92315DBVR is sourced from the original manufacturer or authorized distributors?
All TPS92315DBVR 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 TPS92315DBVR meets industry standards.
7.What is the process for return or replacement of TPS92315DBVR?
All TPS92315DBVR units undergo pre-shipment inspection (PSI). If there is an issue with TPS92315DBVR, 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 TPS92315DBVR part is unused and in its original packaging.
Return procedure for TPS92315DBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS92315DBVR Tags
-
BCR402RE6327HTSA1
Infineon Technologies
-
BCR430UXTSA2
Infineon Technologies
-
BCR420UE6433HTMA1
Infineon Technologies
-
BCR420UE6327HTSA1
Infineon Technologies
-
BCR421UE6327HTSA1
Infineon Technologies
-
LYT1604D-TL
Power Integrations
-
HV9910CLG-G
Microchip Technology
-
CL2N8-G
Microchip Technology
-
BCR420UW6-7
Diodes Incorporated
-
BCR421UW6-7
Diodes Incorporated
-
BCR420UFD-7
Diodes Incorporated
-
BCR421UFD-7
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
