My Inquiry
My Account
Texas Instruments TPS92314ADR/NOPB
- Part No.:
- TPS92314ADR/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS92314ADR/NOPB.pdf
- Description:
- IC LED DRIVER OFFL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,975
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS92314ADR/NOPB from Texas Instruments is an off-line primary-side sensing LED controller for high-efficiency, high-power-factor AC/DC LED drivers. It implements adaptive constant-on-time (COT) control in critical conduction mode (CRM), delivers 350 mA LED current without secondary-side sensing, and integrates zero-cross detection (ZCD), programmable delay (DLY), and cycle-by-cycle overcurrent protection at 1.15 V on ISNS. It targets residential A19/GU10 lamps and solid-state lighting with universal input compatibility.
For engineers reviewing the TPS92314ADR/NOPB datasheet, TPS92314ADR/NOPB pinout, TPS92314ADR/NOPB application, or TPS92314ADR/NOPB equivalent, this page provides verified technical context, validated pin functions, confirmed CRM operation with ZCD-based valley switching, exact OCP threshold (1.15 V), thermal shutdown at 165°C, and real-world design constraints for PFC-compliant flyback topologies.
Technical Context
The TPS92314ADR/NOPB operates in critical conduction mode (CRM) using zero-current detection via the ZCD pin to enable valley-switching MOSFET turn-on, minimizing switching loss and EMI. Its adaptive constant-on-time algorithm dynamically adjusts tON (311–900 ns min/max) based on primary inductor peak current and secondary discharge time, referenced to ISNS voltage.
Protection is implemented per-cycle: overcurrent limit triggers at VISNS = 1.15 V (TPS92314 variant), initiating 233 µs OFF-time extension and COMP discharge; VCC UVLO engages at 22.5–28.3 V (rising) and releases at 10.4–15.3 V (falling); thermal shutdown activates at 165°C with 20°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC UVLO Threshold | 22.5 V (min) to 28.3 V (max) rising - sets minimum startup line voltage for reliable operation across 85–132 VAC inputs |
| ISNS OCP Threshold | 1.15 V (typical) - defines primary-side current limit for MOSFET and transformer protection in TPS92314 variant |
| TON Range | 311 ns (min) to 61 µs (max) - enables precise LED current regulation across input voltage and load variations |
| ZCD Arming Threshold | 1.23 V (typical) - ensures reliable zero-cross detection only after auxiliary winding voltage stabilizes post-switching |
| GATE Drive Rise/Fall | 94 ns rise / 16 ns fall (CLOAD = 1 nF) - supports fast MOSFET switching with low gate charge losses |
| Thermal Shutdown | 165°C (activation), 145°C (release) - protects IC during sustained overload or poor heatsinking in enclosed lamp housings |
| Package | 8-pin SOIC (D package) - industry-standard footprint compatible with automated assembly and thermal relief pads |
Pinout & Package
TPS92314ADR/NOPB uses an 8-pin SOIC (D package) with exposed pad not electrically connected. Thermal resistance θJA = 162°C/W under JEDEC JESD51-7 conditions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | Supplies internal bias; requires 10–20 µF capacitor to PGND for stable startup and ripple suppression |
| AGND | Analog ground reference | Return path for ZCD, COMP, DLY, and ISNS signals - must be separated from PGND to avoid noise coupling |
| ZCD | Zero-cross detection input | Monitors auxiliary winding voltage via resistor divider (RAUX1/RAUX2) to trigger valley switching |
| COMP | Error amplifier output | Connects to RC compensation network (e.g., 4.7 µF) to stabilize average current control loop bandwidth |
| DLY | Delay control input | Resistor-to-ground (e.g., 6.31 kΩ) sets 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 sensing - routed separately from AGND to minimize ground bounce |
| ISNS | Primary current sense input | Measures voltage across RISNS to enforce 1.15 V OCP and regulate LED current without optocoupler |
| GATE | MOSFET gate driver output | Drives external N-channel MOSFET (Q1) with 9.4 V high-level and 125 mV low-level drive capability |
Key Features
| Feature | Design Value |
|---|---|
| Primary-side LED current regulation | Eliminates optocoupler and secondary-side feedback components, reducing BOM count and cost in isolated flyback designs |
| Adaptive constant-on-time (COT) control | Automatically adjusts switching timing to maintain >0.9 power factor across universal AC input range (85–265 VAC) |
| Cycle-by-cycle overcurrent protection | Triggers at 1.15 V on ISNS pin, forcing 233 µs OFF time and COMP discharge to prevent transformer saturation |
| Integrated zero-cross detection (ZCD) | Enables valley switching by sensing auxiliary winding voltage, reducing EMI and improving efficiency vs fixed-frequency CRM |
| Programmable turn-on delay (DLY) | Single external resistor sets delay between ZCD event and GATE activation, optimizing resonance point for lowest EMI |
Applications
| Residential LED Lamps (A19/E26) | Solid-State Lighting Retrofit Modules |
|---|---|
Use Scenario: Dimmable A19 bulb operating directly from 120 VAC mains with integrated heat sink and plastic housing. IC Role / Device Role / Timing Role: Primary-side controller managing CRM flyback topology, regulating 350 mA LED current while maintaining >0.9 PF and <15% THD. Use Value: Enables compact, cost-effective design with no optocoupler or secondary feedback, meeting Energy Star and DLC requirements. |
Use Scenario: GU10 directional lamp replacing halogen MR16, requiring high lumen density and thermal robustness. IC Role / Device Role / Timing Role: Adaptive COT controller synchronizing MOSFET switching to transformer zero-current points for valley turn-on. Use Value: Reduces EMI signature to pass CISPR-15 Class B, avoids costly shielding, and sustains regulation under 10–100% dimming range. |
| Commercial PAR30/38 Downlights | Industrial LED Troffer Drivers |
Use Scenario: 15 W PAR38 lamp with aluminum heat sink, operating continuously at 40°C ambient in recessed ceiling fixtures. IC Role / Device Role / Timing Role: Off-line controller implementing thermal foldback via internal 165°C shutdown and hysteresis recovery at 145°C. Use Value: Prevents catastrophic failure during thermal stress, extends lifetime beyond 25,000 hours, and eliminates external thermal sensors. |
Use Scenario: 30 W troffer driver powering multiple LED strings in office environments with strict EMC and reliability mandates. IC Role / Device Role / Timing Role: CRM controller with ZCD-based timing and programmable DLY resistor to meet EN 55015 conducted emissions limits. Use Value: Achieves PFC compliance without active boost stage, simplifying layout and reducing component count by 30% vs two-stage solutions. |
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 |
|---|---|---|---|
| TPS92314A | OCP threshold is 2.0 V (vs 1.15 V), enabling higher peak currents for universal-input (85–265 VAC) designs | Better suited for 230 VAC systems where higher primary current headroom is needed; less optimal for 120 VAC cost-sensitive lamps | Select TPS92314A when designing for global line voltage range; retain TPS92314ADR/NOPB for optimized 120 VAC-only cost and efficiency |
| NCP1015DR2G | Fixed-frequency PWM controller (65 kHz) without ZCD or adaptive COT; requires optocoupler for regulation | Lacks inherent PFC and valley switching - lower efficiency, higher EMI, and larger magnetics required | Choose only if legacy design reuse or ultra-low-cost target outweighs PF, efficiency, and EMI performance requirements |
Compared with TPS92314A and NCP1015DR2G, TPS92314ADR/NOPB uniquely delivers primary-side regulation with CRM valley switching and 1.15 V OCP-enabling smaller transformers, lower EMI, and reduced BOM versus optocoupler-dependent alternatives.
Availability
TPS92314ADR/NOPB is available at Aetrix Electronics and suitable for residential LED lamps (A19/E26), commercial downlights (PAR30/38), and industrial troffer drivers requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS92314ADR/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 ICs, with decades of expertise in LED driver innovation and automotive-grade reliability validation.
The TPS92314ADR/NOPB belongs to TI's off-line LED controller product line, engineered specifically for high-efficiency, high-power-factor, single-stage flyback drivers targeting cost-sensitive, thermally constrained residential and commercial lighting applications.
FAQ
What is the overcurrent protection threshold for TPS92314ADR/NOPB?
The TPS92314ADR/NOPB has a fixed overcurrent protection (OCP) threshold of 1.15 V on the ISNS pin, as specified in the Electrical Characteristics table. This value is distinct from the TPS92314A variant (2.0 V) and is used to limit primary-side inductor current cycle-by-cycle. When VISNS reaches 1.15 V, the controller forces GATE low and extends OFF time to 233 µs, preventing transformer saturation. The TPS92314ADR/NOPB datasheet confirms this threshold applies across –40°C to +125°C junction temperature.
Does TPS92314ADR/NOPB require an optocoupler for LED current regulation?
No, the TPS92314ADR/NOPB performs primary-side sensing and does not require an optocoupler. It regulates LED current by monitoring the voltage across the primary-side current-sense resistor (RISNS) connected to the ISNS pin and using auxiliary winding feedback via the ZCD pin for timing. This eliminates secondary-side feedback components, reducing bill-of-materials cost and improving system reliability. The TPS92314ADR/NOPB datasheet explicitly states "Regulates LED Current Without Secondary Side Sensing" as a core feature.
What is the recommended package and thermal handling for TPS92314ADR/NOPB?
The TPS92314ADR/NOPB is supplied in an 8-pin SOIC (D package) with θJA = 162°C/W under JEDEC JESD51-7 test conditions. For reliable operation, PCB layout must separate AGND and PGND traces, use thermal vias under the exposed pad (if present), and maintain ≥25 mm² copper pour connected to PGND. The device shuts down at 165°C junction temperature and resumes at 145°C; derating is required above 85°C ambient in enclosed fixtures. The TPS92314ADR/NOPB datasheet specifies maximum lead temperature as 260°C for solder reflow.
How does TPS92314ADR/NOPB achieve power factor correction (PFC)?
The TPS92314ADR/NOPB achieves inherent power factor correction through critical conduction mode (CRM) operation with adaptive constant-on-time (COT) control. By sensing zero-current crossing via the ZCD pin and adjusting tON dynamically based on primary inductor current and secondary discharge time, it shapes input current to closely follow the sinusoidal AC voltage waveform. This yields >0.9 power factor without requiring a separate boost PFC stage. The TPS92314ADR/NOPB datasheet confirms "Adaptive ON-time Control with Inherent PFC" as a key feature.
Can TPS92314ADR/NOPB be used in non-isolated buck-boost LED drivers?
Yes, the TPS92314ADR/NOPB supports both isolated flyback and non-isolated buck-boost topologies, as stated in the Application Information section. In buck-boost configurations, the ZCD pin monitors the inductor voltage to detect zero-current points, enabling CRM operation. However, primary-side current sensing remains valid only when the ISNS resistor is placed in the main power path (e.g., high-side switch source). The TPS92314ADR/NOPB datasheet shows typical schematics for both topologies and specifies that LAUX winding is still required for ZCD functionality even in non-isolated designs.
TPS92314ADR/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
TPS92314ADR/NOPB FAQ
1.How can I place an order for TPS92314ADR/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS92314ADR/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 TPS92314ADR/NOPB reliable?
The price and inventory of TPS92314ADR/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS92314ADR/NOPB is usually 5 days.
3.What payment methods are accepted for TPS92314ADR/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS92314ADR/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS92314ADR/NOPB?
TPS92314ADR/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS92314ADR/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 TPS92314ADR/NOPB?
For technical support, including TPS92314ADR/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS92314ADR/NOPB requirements.
6.How does Aetrix verify that TPS92314ADR/NOPB is sourced from the original manufacturer or authorized distributors?
All TPS92314ADR/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 TPS92314ADR/NOPB meets industry standards.
7.What is the process for return or replacement of TPS92314ADR/NOPB?
All TPS92314ADR/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with TPS92314ADR/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 TPS92314ADR/NOPB part is unused and in its original packaging.
Return procedure for TPS92314ADR/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS92314ADR/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…
