My Inquiry
My Account
Texas Instruments TPS92310DGS/NOPB
- Part No.:
- TPS92310DGS/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS92310DGS/NOPB.pdf
- Description:
- IC LED DRIVER OFFL 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,185
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS92310DGS/NOPB from Texas Instruments is an off-line primary-side sensing LED controller for isolated and non-isolated flyback topologies, delivering 350 mA LED current with adaptive constant-on-time (COT) or peak-current-mode (PCM) control, inherent power factor correction (PFC), and quasi-resonant valley switching. It operates from 85–132 VAC, supports 7-LED stacks at 21 V, and integrates over-temperature, over-voltage, and cycle-by-cycle current protection.
For engineers reviewing the TPS92310DGS/NOPB datasheet, TPS92310DGS/NOPB pinout, TPS92310DGS/NOPB application, or TPS92310DGS/NOPB equivalent, key selection criteria include CRM operation with ZCD-based valley switching, programmable DLY delay for EMI optimization, dual-mode configuration via MODE1/MODE2 pins, and VSSOP-10 package compatibility with high-density LED driver PCB layouts.
Technical Context
The TPS92310DGS/NOPB implements critical-conduction-mode (CRM) control using zero-crossing detection (ZCD) from an auxiliary winding to trigger valley-switching, minimizing switching loss and EMI. Its adaptive ON-time algorithm dynamically adjusts tON based on primary inductor peak current and secondary discharge time, enabling >0.9 power factor without external PFC circuitry.
Operating modes-COT for high PF in isolated/non-isolated configurations or PCM for reduced output current ripple-are selected via MODE1/MODE2 logic states. Protection includes thermal shutdown at 165°C, output OVP triggered after three consecutive ZCD-PEAK > 4.3 V cycles, and dual-threshold over-current detection (0.64 V for non-isolated, 3.4 V for isolated topologies).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC UVLO Threshold | 25.6 V (typical turn-on); enables reliable startup from rectified AC line via R1 bias network |
| Minimum ON Time | 540 ns (typical); sets lower bound for switching frequency in CRM mode at low line |
| ZCD Arming Threshold | 1.24 V (typical); defines minimum auxiliary winding voltage required to initiate ZCD detection |
| ISNS OCP Threshold | 0.64 V (non-isolated) / 3.4 V (isolated); configures primary-side current limit for MOSFET protection |
| GATE Drive Voltage | 9.4 V (high), 80 mV (low) at 50 mA; ensures robust MOSFET gate drive with low conduction loss |
| Thermal Shutdown | 165°C (typical); disables GATE output to prevent permanent damage during overload |
| Operating Ambient Temp | –40°C to +125°C; supports industrial-grade LED lamp operation in enclosed fixtures |
Pinout & Package
TPS92310DGS/NOPB uses a 10-pin VSSOP (Very Small Outline Package) with 0.5 mm pitch, optimized for compact LED driver PCBs requiring thermal efficiency and layout simplicity. Pin 1 is VCC; Pin 10 is GATE; AGND and PGND are separate but externally tied.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | Supplies internal circuitry and gate driver; requires 10 µF bypass capacitor to PGND |
| ZCD | Zero-crossing detection input | Accepts scaled auxiliary winding voltage to detect valley point for quasi-resonant switching |
| AGND | Small-signal ground | Reference for analog blocks (COMP, ISNS, ZCD); must be star-connected to PGND externally |
| COMP | Error amplifier output | Drives compensation network (CCOMP to AGND) to stabilize LED current regulation loop |
| DLY | Delay control input | Resistor-to-ground sets delay between ZCD trigger and GATE turn-on to minimize EMI |
| MODE1 / MODE2 | Mode selection inputs | Logic-configurable pins selecting COT/PCM and isolated/non-isolated topology support |
| PGND | Power ground | Return path for GATE driver and ISNS current sense; externally connected to AGND |
| ISNS | Current sense input | Monitors voltage across RISNS for cycle-by-cycle peak current limiting and regulation |
| GATE | Gate driver output | Drives external N-channel MOSFET Q1 with 9.4 V high / 80 mV low levels at 50 mA |
Key Features
| Feature | Design Value |
|---|---|
| Primary-side sensing | Eliminates optocoupler and secondary-side feedback components, reducing BOM count and cost |
| Inherent PFC in COT mode | Delivers >0.9 power factor without active PFC controller or boost stage, simplifying compliance |
| Quasi-resonant valley switching | Reduces MOSFET switching loss and EMI by turning on at transformer drain voltage minima |
| Programmable delay (DLY) | Single resistor sets tDLY to match resonant timing of LP and Q1-CDS, optimizing efficiency |
| Dual-mode topology support | Configurable for isolated flyback or non-isolated buck-boost via MODE1/MODE2 logic states |
Applications
| A19 LED Lamp (E26/E27) | PAR38 Downlight |
|---|---|
Use Scenario: Retrofit A19 bulb operating directly from 120 VAC mains with 7-series LEDs at 350 mA. IC Role / Device Role / Timing Role: Primary-side controller executing CRM quasi-resonant switching with ZCD-based valley detection and adaptive ON-time regulation. Use Value: Achieves >85% system efficiency and >0.9 PF without secondary feedback, meeting Energy Star requirements in <18 mm diameter form factor. | Use Scenario: High-lumen PAR38 directional lamp with thermal-limited 21 V LED stack and aluminum heat sink. IC Role / Device Role / Timing Role: Isolated flyback controller using PCM mode for low-output-current ripple and tight regulation under dimming transients. Use Value: Enables stable 350 mA output across 10–100% dimming range while maintaining thermal shutdown at 165°C junction temperature. |
| GU10 MR16 Replacement | Solid-State Streetlight Module |
Use Scenario: 120 VAC-input GU10 lamp replacing halogen MR16, requiring no external transformer. IC Role / Device Role / Timing Role: Non-isolated buck-boost controller in COT mode, leveraging MODE1=OPEN/MODE2=GND configuration. Use Value: Delivers 350 mA at 21 V with >90% efficiency and eliminates isolation barrier, reducing size and cost versus traditional drivers. | Use Scenario: Outdoor streetlight module operating from 120/277 VAC with multi-string LED arrays and surge protection. IC Role / Device Role / Timing Role: Primary-side controller managing multiple parallel TPS92310DGS/NOPB channels with coordinated OVP and thermal monitoring. Use Value: Supports scalable 350 mA per channel with synchronized valley switching, enabling uniform lumen output and extended lifetime in harsh environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCC28810DR | Fixed-frequency CRM controller; no programmable DLY or dual-mode selection; higher VCC UVLO (27.5 V) | Lacks adaptive ON-time and valley-switching delay tuning; suited for fixed-layout, cost-sensitive lamps | Choose UCC28810DR when design prioritizes simplicity over EMI optimization and does not require non-isolated topology support |
| NCP1027DR2G | Fixed-frequency discontinuous conduction mode (DCM) controller; no ZCD or inherent PFC; requires optocoupler feedback | Lower integration; needs secondary-side regulation and external PFC for PF >0.7; limited to low-power designs | Select NCP1027DR2G only for legacy designs where BOM cost outweighs PF and efficiency targets |
Compared with UCC28810DR and NCP1027DR2G, the TPS92310DGS/NOPB provides superior EMI performance via programmable valley-switching delay, broader topology flexibility (isolated/non-isolated), and true inherent PFC-enabling single-stage 85–132 VAC LED drivers that meet IEC 61000-3-2 Class C without additional circuitry.
Availability
TPS92310DGS/NOPB is available at Aetrix Electronics and suitable for A19 retrofit lamps, PAR38 downlights, GU10 replacements, and solid-state streetlight modules requiring stable component supply, long-lifecycle assurance, and consistent parametric performance across production batches.
Supply support for TPS92310DGS/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 lighting control and energy-efficient power conversion.
The TPS92310DGS/NOPB belongs to TI's LED lighting controller product line, engineered specifically for high-efficiency, single-stage off-line LED drivers with integrated PFC and primary-side regulation-targeting commercial and residential solid-state lighting applications.
FAQ
What is the recommended external component for setting the TPS92310DGS/NOPB delay time?
The TPS92310DGS/NOPB delay time is set by a single resistor (RDLY) connected between the DLY pin and PGND. For a typical 302 ns delay, a 6.34 kΩ resistor is used. The relationship follows RDLY = tDLY × 32 MΩ/ns, and actual value must be tuned to match the resonant frequency of the transformer primary inductance and MOSFET drain-source capacitance. This ensures optimal valley switching and minimal EMI in the final TPS92310DGS/NOPB design.
How does the TPS92310DGS/NOPB achieve power factor correction without external circuitry?
The TPS92310DGS/NOPB achieves inherent power factor correction by operating in critical conduction mode (CRM) with adaptive constant-on-time (COT) control. In COT mode, the controller maintains near-constant switch conduction time across the AC line cycle while allowing off-time to vary inversely with instantaneous input voltage-naturally shaping input current to follow the sinusoidal voltage waveform. This eliminates the need for a separate boost-PFC stage, and the TPS92310DGS/NOPB delivers >0.9 PF in properly designed flyback circuits.
Can the TPS92310DGS/NOPB be used in non-isolated LED driver topologies?
Yes, the TPS92310DGS/NOPB supports non-isolated topologies such as buck-boost when configured with MODE1 = OPEN and MODE2 = GND. In this mode, it operates exclusively in constant-on-time (COT) control, using the ISNS pin for primary-side current sensing and regulation. The non-isolated configuration eliminates the transformer and auxiliary winding, reducing size and cost-ideal for GU10 and other compact LED lamp designs where safety isolation is managed at the system level. The TPS92310DGS/NOPB retains full protection features including OCP, OVP, and thermal shutdown in this configuration.
What is the function of the ZCD pin on the TPS92310DGS/NOPB, and how is it interfaced?
The ZCD (zero-crossing detection) pin on the TPS92310DGS/NOPB senses the auxiliary winding voltage (VLAUX) through a resistor divider (e.g., R2 = 66 kΩ, R3 = 11 kΩ) to detect the end of the secondary discharge period-triggering valley-switching. A 15 pF capacitor from ZCD to AGND suppresses high-frequency noise. The ZCD pin has defined thresholds: arming at 1.24 V and triggering at 0.6 V (decreasing), with 0.64 V hysteresis. Proper scaling ensures VZCD-PEAK ≈ 3 V during normal operation, enabling reliable quasi-resonant control in every TPS92310DGS/NOPB implementation.
Does the TPS92310DGS/NOPB require an external compensation network, and what is its purpose?
Yes, the TPS92310DGS/NOPB requires an external compensation network connected to the COMP pin-typically a 2.2 µF capacitor from COMP to AGND. This network stabilizes the LED current regulation loop by setting the dominant pole and phase margin of the error amplifier, which compares sensed ISNS voltage against an internal reference. Without proper compensation, the TPS92310DGS/NOPB may exhibit output current oscillation or poor transient response during dimming or line-voltage steps. The COMP pin's 2.0–3.5 V operating range and 27 µA internal reference current define the design boundaries for this critical network in each TPS92310DGS/NOPB application.
TPS92310DGS/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm 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):
- 36V
- Voltage - Output:
- -
- Current - Output / Channel:
- -
- Frequency:
- 60kHz ~ 150kHz
- Dimming:
- -
- Applications:
- -
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSSOP
TPS92310DGS/NOPB FAQ
1.How can I place an order for TPS92310DGS/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS92310DGS/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 TPS92310DGS/NOPB reliable?
The price and inventory of TPS92310DGS/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS92310DGS/NOPB is usually 5 days.
3.What payment methods are accepted for TPS92310DGS/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS92310DGS/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS92310DGS/NOPB?
TPS92310DGS/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS92310DGS/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 TPS92310DGS/NOPB?
For technical support, including TPS92310DGS/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS92310DGS/NOPB requirements.
6.How does Aetrix verify that TPS92310DGS/NOPB is sourced from the original manufacturer or authorized distributors?
All TPS92310DGS/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 TPS92310DGS/NOPB meets industry standards.
7.What is the process for return or replacement of TPS92310DGS/NOPB?
All TPS92310DGS/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with TPS92310DGS/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 TPS92310DGS/NOPB part is unused and in its original packaging.
Return procedure for TPS92310DGS/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS92310DGS/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…
