My Inquiry
My Account
Texas Instruments TPS92314DR/NOPB
- Part No.:
- TPS92314DR/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS92314DR/NOPB.pdf
- Description:
- IC LED DRIVER OFFL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,313
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS92314DR/NOPB from Texas Instruments is an off-line primary-side sensing LED controller IC designed for high-efficiency, single-stage flyback LED drivers with inherent power factor correction (PFC). It operates in critical conduction mode (CRM) with adaptive constant on-time control, supports 85–132 VAC input, delivers up to 350 mA LED current, and integrates zero-current detection (ZCD), programmable delay, and cycle-by-cycle overcurrent protection for residential A19 and PAR30/38 lamps.
For engineers reviewing the TPS92314DR/NOPB datasheet, TPS92314DR/NOPB pinout, TPS92314DR/NOPB application, or TPS92314DR/NOPB equivalent, this device is selected for cost-sensitive, non-isolated or isolated LED lighting designs requiring no secondary-side current sensing, stable output current across line variations, and built-in OVP/OCP/thermal protection without external optocouplers.
Technical Context
The TPS92314DR/NOPB implements CRM operation using valley-switching triggered by ZCD input from an auxiliary winding, enabling natural PFC and low EMI. Its adaptive on-time control dynamically adjusts tON (311–900 ns min/max) based on primary inductor peak current and secondary discharge time, referenced to internal 1.15 V OCP threshold at ISNS.
Protection logic includes cycle-by-cycle current limiting (1.15 V threshold), VCC UVLO (22.5–28.3 V turn-on), ZCD-based open-circuit OVP (3.9–4.7 V), thermal shutdown at 165°C, and programmable gate turn-on delay via DLY pin resistor (256 ns propagation delay, 302 ns typical delay setting).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC UVLO Turn-on Threshold | 22.5–28.3 V: Ensures reliable startup only after sufficient bias voltage is established from AC line via R1/D1 network. |
| ISNS Overcurrent Threshold | 1.07–1.22 V (TPS92314): Sets primary-side current limit corresponding to ~350 mA LED output with typical transformer turns ratio and RISNS. |
| Minimum ON Time | 311–900 ns: Enables high-frequency switching (up to 150 kHz) while maintaining CRM valley switching integrity. |
| ZCD Arming Threshold | 1.04–1.42 V: Defines rising-edge trigger point for zero-current detection, ensuring accurate timing of MOSFET turn-on after valley. |
| GATE Drive Voltage | 7.6–9.4 V high-level / 85–125 mV low-level: Provides robust MOSFET gate drive compatible with standard 600–800 V superjunction FETs. |
| Thermal Shutdown Temp | 165°C (typ.): Activates internal shutdown to prevent permanent damage during sustained overload or poor heatsinking. |
| Package | 8-pin SOIC (D package): Standard surface-mount footprint with exposed pad not present; suitable for automated assembly and thermal management via PCB copper. |
Pinout & Package
TPS92314DR/NOPB is housed in an 8-pin SOIC (D package) with standard JEDEC MS-012AC dimensions (4.9 mm × 3.9 mm × 1.75 mm), rated for –40°C to +125°C junction temperature and 162°C/W θJA.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | Bias rail for internal circuitry; requires 10–20 µF bulk capacitor to PGND for stable startup and transient immunity. |
| AGND | Analog ground reference | Return path for precision analog blocks (COMP, ZCD, ISNS); must be separated from PGND and tied at single point near VCC capacitor. |
| ZCD | Zero-crossing detection input | Accepts scaled auxiliary winding voltage; triggers valley-switching when falling below 0.48–0.77 V after arming above 1.04–1.42 V. |
| COMP | Error amplifier output | Drives external RC compensation network to stabilize average current regulation loop; sets adaptive on-time duration. |
| DLY | Delay control input | Connects to ground via resistor (e.g., 6.31 kΩ) to program 302 ns delay between ZCD trigger and GATE turn-on for EMI reduction. |
| PGND | Power ground return | High-current return for GATE driver and ISNS sense path; must be routed with low-inductance copper to minimize noise coupling. |
| ISNS | Primary current sense input | Monitors voltage across RISNS to enforce 1.15 V cycle-by-cycle current limit; includes 256 ns propagation delay for fast fault response. |
| GATE | High-side MOSFET gate driver output | Delivers 50 mA sink/source capability; rise/fall times of 94 ns/16 ns into 1 nF load ensure fast FET switching with minimal overlap loss. |
Key Features
| Feature | Design Value |
|---|---|
| Primary-side constant current regulation | Eliminates optocoupler and secondary-side shunt regulator, reducing BOM count and improving reliability in A19/PAR38 lamp designs. |
| Critical conduction mode (CRM) with ZCD | Enables >0.9 PF across 85–132 VAC input without active PFC stage, meeting ENERGY STAR and IEC 61000-3-2 Class C requirements. |
| Programmable gate turn-on delay | Single external resistor on DLY pin sets delay (250–450 µA source) to align switching with resonant valley, minimizing EMI and switching loss. |
| Integrated protection suite | Includes VCC UVLO/OVP, ZCD-based OVP, cycle-by-cycle OCP (1.15 V threshold), and thermal shutdown - all implemented without external components. |
| Adaptive constant on-time control | Adjusts tON dynamically per cycle based on ISNS and ZCD timing, maintaining stable LED current despite line and component tolerances. |
Applications
| Residential LED Lamps (A19/E26) | Solid-State Lighting Retrofit Modules |
|---|---|
Use Scenario: Driving 7-series 3.0 V white LEDs (21 V total) from 85–132 VAC input in enclosed A19 bulb housing with limited thermal headroom. IC Role / Device Role / Timing Role: Primary-side CRM flyback controller performing valley-switched gate drive, ZCD-triggered timing, and adaptive on-time current regulation. Use Value: Delivers ±5% LED current accuracy across line and temperature without secondary sensing, enabling UL Class P compliance and 50,000-hour lifetime. |
Use Scenario: Retrofitting legacy halogen PAR30/38 fixtures with high-lumen LED arrays requiring universal input and dimmable compatibility. IC Role / Device Role / Timing Role: Off-line LED driver controller implementing PFC-capable CRM operation with programmable delay to reduce audible noise and EMI in enclosed housings. Use Value: Achieves >90% efficiency at 350 mA output while meeting FCC Part 15 Class B conducted emissions limits without Y-capacitors or common-mode chokes. |
| Non-Isolated LED Drivers | GU10 Base LED Spotlights |
Use Scenario: Cost-optimized, non-isolated buck-boost LED driver for commercial downlights where SELV isolation is not mandated. IC Role / Device Role / Timing Role: Primary-side sensing controller regulating LED current via ISNS feedback and ZCD-based timing in discontinuous conduction mode variants. Use Value: Reduces bill-of-materials by eliminating transformer isolation, optocoupler, and TL431, cutting system cost by ~$0.35/unit at volume. |
Use Scenario: Compact GU10 spotlight with tight board space (< 12 mm height) and 21 V/350 mA output driving 7×3 V LEDs. IC Role / Device Role / Timing Role: High-density flyback controller using SOIC-8 package and integrated protections to meet EN 62471 photobiological safety requirements. Use Value: Enables full thermal shutdown (165°C) and auto-restart behavior during LED open-circuit faults, satisfying IEC 62368-1 fault tolerance clauses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar off-line LED controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS92314ADR/NOPB | Higher ISNS OCP threshold (1.90–2.10 V vs. 1.07–1.22 V); identical pinout, package, and feature set. | Better suited for universal-input (100–240 VAC) designs requiring higher primary current headroom and reduced RISNS power loss. | Select TPS92314ADR/NOPB when designing for 230 VAC nominal input or higher-output-power (>12 W) lamps. |
| UCC28810DR | Fixed-frequency CRM controller with internal 12 V gate driver; no DLY pin; OCP set by external resistor; different COMP architecture. | Lacks programmable delay and adaptive on-time; requires external OCP resistor and separate ZCD scaling network. | Choose UCC28810DR only if legacy design reuse or fixed-frequency EMI profile is prioritized over valley-switching optimization. |
Compared with TPS92314DR/NOPB, the TPS92314ADR/NOPB offers higher OCP headroom for universal-line designs but requires re-optimization of RISNS, while UCC28810DR trades valley-switching flexibility for simpler compensation and fixed-frequency predictability - neither is pin-compatible.
Availability
TPS92314DR/NOPB is available at Aetrix Electronics and suitable for residential LED lamps (A19, PAR30/38), solid-state lighting retrofit modules, and GU10 spotlights requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for TPS92314DR/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 automotive-grade reliability validation.
The TPS92314DR/NOPB belongs to TI's off-line LED controller product line, engineered specifically for cost-sensitive, high-PF, primary-side regulated lighting applications targeting residential and commercial retrofit markets.
FAQ
What is the primary function of the TPS92314DR/NOPB in an LED lighting system?
The TPS92314DR/NOPB serves as an off-line primary-side sensing controller for flyback LED drivers. It regulates LED current without secondary-side feedback by monitoring primary inductor current (via ISNS) and transformer auxiliary winding zero-crossing (via ZCD), enabling inherent power factor correction and valley-switched operation. This eliminates optocouplers and simplifies design for A19 and PAR30/38 lamps.
How does the TPS92314DR/NOPB achieve power factor correction without a dedicated PFC stage?
The TPS92314DR/NOPB achieves >0.9 power factor through critical conduction mode (CRM) operation combined with adaptive constant on-time control. By triggering MOSFET turn-on at the valley of the resonant current waveform (detected via ZCD) and adjusting on-time per cycle based on line voltage and load, it naturally shapes input current to follow the sinusoidal input voltage - meeting IEC 61000-3-2 Class C without auxiliary boost stages.
What is the role of the DLY pin on the TPS92314DR/NOPB, and how is it configured?
The DLY pin on the TPS92314DR/NOPB programs the delay between ZCD trigger and GATE turn-on to align switching with the resonant valley and reduce EMI. It sources 250–450 µA internally; connecting a resistor (e.g., 6.31 kΩ) from DLY to PGND sets a ~302 ns delay. This delay compensates for MOSFET drain-source capacitance and transformer leakage, preventing premature turn-on and hard switching.
Does the TPS92314DR/NOPB support both isolated and non-isolated LED driver topologies?
Yes, the TPS92314DR/NOPB supports both isolated (flyback) and non-isolated (buck-boost, SEPIC) topologies. Its ZCD input enables valley switching in isolated designs using an auxiliary winding, while its ISNS-based current sensing and adaptive on-time control allow stable regulation in non-isolated configurations where primary current directly correlates to LED current - confirmed in TI's application notes for both architectures.
What protection features are integrated into the TPS92314DR/NOPB, and how do they operate?
The TPS92314DR/NOPB integrates cycle-by-cycle overcurrent protection (1.15 V ISNS threshold), VCC UVLO/OVP (22.5–28.3 V on, 10.4–16.0 V off), ZCD-based open-circuit OVP (3.9–4.7 V), short-circuit detection via ZCD under-voltage, and thermal shutdown at 165°C. All protections trigger automatic restart after fault clearance - for example, OVP causes gate shutdown until VCC drops below UVLO falling threshold, then resumes startup sequence.
TPS92314DR/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- 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):
- No
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 13V
- Voltage - Supply (Max):
- 35V
- Voltage - Output:
- -
- Current - Output / Channel:
- -
- Frequency:
- 60kHz ~ 150kHz
- Dimming:
- -
- Applications:
- Lighting
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TPS92314DR/NOPB FAQ
1.How can I place an order for TPS92314DR/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS92314DR/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 TPS92314DR/NOPB reliable?
The price and inventory of TPS92314DR/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS92314DR/NOPB is usually 5 days.
3.What payment methods are accepted for TPS92314DR/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS92314DR/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS92314DR/NOPB?
TPS92314DR/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS92314DR/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 TPS92314DR/NOPB?
For technical support, including TPS92314DR/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS92314DR/NOPB requirements.
6.How does Aetrix verify that TPS92314DR/NOPB is sourced from the original manufacturer or authorized distributors?
All TPS92314DR/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 TPS92314DR/NOPB meets industry standards.
7.What is the process for return or replacement of TPS92314DR/NOPB?
All TPS92314DR/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with TPS92314DR/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 TPS92314DR/NOPB part is unused and in its original packaging.
Return procedure for TPS92314DR/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS92314DR/NOPB 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…
