TEA2376DT-1Y - Interleaved PFC Controller, 25-300kHz | NXP
MPN: TEA2376DT-1Y β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.51 | $3.51 |
| 10 | $3.16 | $31.60 |
| 100 | $2.85 | $285.00 |
| 500 | $2.6 | $1,300.00 |
| 1,000 | $2.38 | $2,380.00 |
TEA2376DT-1Y Overview
A PFC controller is a power management IC that shapes the input current waveform of an AC-DC converter to follow the input voltage, achieving a high power factor and low harmonic distortion as required by IEC harmonics regulations in modern off-line power supplies. Interleaved two-phase topologies split the PFC power stage into two parallel, phase-shifted branches, halving input ripple current and easing EMI filter design.
Key features of the TEA2376DT include digital configurability via a high-speed configurable hardware state machine, which ensures reliable real-time control without firmware; valley switching in QR mode to reduce switching losses; and integrated protections such as cycle-by-cycle current limiting and overvoltage protection for robust operation.
Under light load, the controller supports phase shedding, in which one interleaved phase is disabled, combined with burst mode operation to maintain high efficiency down to very low output power - a key requirement for energy-efficiency standards in TVs, computing and server PSUs.
Typical applications include television power supplies, desktop PC and server power supplies, and industrial AC-DC systems. NXP's TEA2376DB1623 reference design demonstrates a 1 kW standalone two-phase interleaved PFC using the TEA2376DT paired with the TEA2209T X-capacitor discharge controller.
Design consideration: with a two-phase interleaved stage, careful PCB layout balancing both phase current loops and routing the two gate-drive outputs symmetrically is essential to guarantee equal current sharing between phases.
This page adds value beyond the manufacturer datasheet by synthesizing distributor pricing and stock data, drop-in family alternatives, and practical engineering notes in one place.
Drop-in alternatives for TEA2376DT-1Y β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
TEA2376DT/1
β Drop-Inπ Reference alternative (not in catalog)
TEA2376DT-1Y Maximum Ratings & Electrical Characteristics
| Function | Digital configurable two-phase interleaved PFC controller |
| Operating Mode | Discontinuous conduction mode (DCM) / quasi-resonant (QR) with valley switching |
| Switching Frequency Range | 25 kHz to 300 kHz |
| Number of Phases | 2 (interleaved) |
| Control Architecture | High-speed configurable hardware state machine (digital) |
| Light-Load Features | Phase shedding and burst mode operation |
| Package | SO14 (14-pin SO, low profile, narrow body) |
| Mounting Type | Surface Mount |
| Applications | TV, computing, server and industrial power supplies |
| Typical Reference Design | TEA2376DB1623 1 kW standalone interleaved PFC (with TEA2209T) |
| RoHS Status | Compliant |
TEA2376DT-1Y so14 (14-pin so, low profile, narrow body) Pin Configuration Guide
Pin configuration for TEA2376DT-1Y (so14 (14-pin so, low profile, narrow body) package). This power device features gate, drain, and source terminals. For non-polarized packages, refer to the manufacturer datasheet for exact pin 1 orientation and footprint details. Common applications include power supply design, motor driving, and load switching.
No detailed pinout data available for TEA2376DT-1Y.
Refer to the datasheet for full pin configuration.
Typical Applications
TEA2376DT-1Y is suitable for 6 applications: TV Power Supplies, Computing and Desktop PC Power Supplies, Server Power Supplies, Industrial AC-DC Power Supplies, High-Density Adapter and Charger Designs, LED Drivers and Lighting Power Front Ends.
TV Power Supplies
Modern flat-panel television power supplies must meet strict energy-efficiency and harmonics regulations while remaining cost-sensitive. The TEA2376DT/1Y fits this application because its two-phase interleaved architecture reduces input ripple current and per-phase boost inductor size, keeping the power stage compact enough for slim TV chassis, while the 25 kHz to 300 kHz operating range with quasi-resonant valley switching minimizes switching loss. At light load and standby - conditions where TVs spend most of their time - phase shedding disables one phase and burst mode drops switching activity, delivering the low standby input power that Energy Star and EU ecodesign rules demand. Used with a companion LLC or flyback stage, the digitally configurable hardware state machine lets one controller silicon serve multiple TV power tiers by changing configuration only.
Recommended
Computing and Desktop PC Power Supplies
Desktop PC and all-in-one computing power supplies in the 400 W to 800 W class benefit directly from interleaved PFC. The TEA2376DT/1Y's two phase-shifted boost stages halve the RMS current in each boost inductor and switch, allowing smaller inductors and lower-RDS(on) MOSFETs per phase, which improves overall efficiency and thermals inside the restricted PSU enclosure. Quasi-resonant valley switching reduces turn-on losses at the high switching frequencies needed to keep magnetics small. Because the control is implemented in a high-speed configurable hardware state machine, response to load steps from CPU/GPU burst activity is deterministic and fast, and phase shedding keeps light-load efficiency high during idle - important for 80 PLUS program compliance across the full load curve.
Recommended
Server Power Supplies
Server power supplies in the 1 kW class are the flagship application for the TEA2376DT/1Y: NXP's TEA2376DB1623 user manual (UM11967) documents a validated 1 kW standalone two-phase interleaved PFC board using the TEA2376DT in SO-14 together with the TEA2209T X-capacitor discharge controller. Interleaving minimizes input current ripple, relaxing EMI filter size - critical where power density per rack unit is at a premium - while valley switching in quasi-resonant mode reduces switching losses across the load range. Phase shedding and burst mode hold efficiency and standby input power within typical server PSU and data-center efficiency specifications even at the light loads servers see outside peak compute windows, and the digital configurable architecture supports quick re-rating across server SKU power levels.
Recommended
Industrial AC-DC Power Supplies
Industrial power supplies - from factory automation and robotics supplies to telecom rectifier front ends - require robust power factor correction with wide mains tolerance and high reliability. The TEA2376DT/1Y addresses this with cycle-by-cycle phase-current protection inherent to its digital hardware state machine, which reacts in real time without firmware latency, plus overvoltage protection on the boost output. The two-phase interleaved topology spreads thermal stress across two inductors and switch sets, improving long-term reliability in elevated-ambient industrial cabinets. Valley switching reduces EMI at the frequency range where industrial conducted-emission limits bite, easing filter design. Since configuration is digital, the same controller can be retuned across 400 W to 1 kW+ industrial power ratings without a silicon change.
Recommended
High-Density Adapter and Charger Designs
High-power USB-C adapters and external power bricks above 240 W must meet DOE Level VI and CoC Tier 2 efficiency requirements and deliver high power from a small volume. The TEA2376DT/1Y supports these goals: the interleaved DCM/QR boost stage divides the boost inductor into two smaller phases that fit the low-profile adapter form factor, while valley switching keeps turn-on losses low at the high frequencies (up to 300 kHz) needed for small magnetics. Phase shedding and burst mode deliver the very low no-load and light-load input power these regulations mandate, which single-phase PFC designs struggle to achieve at this power level. The SO14 low-profile narrow-body package suits compact adapter PCBs with tight component height limits.
Recommended
LED Drivers and Lighting Power Front Ends
High-bay, street-lighting and stage-lighting LED drivers above 300 W require PFC front ends with high efficiency, low EMI and good light-load behavior for dimming operation. The TEA2376DT/1Y's quasi-resonant valley switching lowers switching loss and reduces high-frequency harmonic content, simplifying compliance with conducted EMI limits in metal luminaire enclosures. Interleaving halves the input ripple current, which reduces input capacitor stress over the long lifetimes expected of lighting products. Because LED drivers frequently operate at partial output when dimmed, the controller's phase shedding and burst mode maintain efficiency at the partial-load operating points where the driver spends much of its life, and its digital configurability allows the same controller to be reused across multiple luminaire power ratings.
Recommended
Recommended Products Summary
Engineering reference data for TEA2376DT-1Y β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TEA2376DT/1 |
|---|---|---|
| Package | SO14 (14-pin SO, low profile) | SO14 - same |
| Brand | NXP Semiconductors | NXP Semiconductors |
| Topology | Two-phase interleaved PFC | Two-phase interleaved PFC - same |
| Switching Frequency Range | 25 kHz to 300 kHz | 25 kHz to 300 kHz |
| Operating Mode | DCM / QR with valley switching | DCM / QR with valley switching |
| Light-Load Features | Phase shedding + burst mode | Phase shedding + burst mode |
| Control Architecture | Digital configurable hardware state machine | Digital configurable hardware state machine |
| Unit Price (qty 1) | $3.51 | $3.51 |
Key Differentiators
- Digital configurable hardware state machine (no firmware) (vs TEA2376DT/1 (single-phase competitor PFC controllers generally))
- Phase shedding plus burst mode (vs Single-phase PFC controllers (e.g., TEA1755 family))
- Two-phase interleaving halves ripple and per-phase stress (vs TEA2376DT/1 vs single-phase boost PFC at equal power)
Design Notes
In a two-phase interleaved PFC, current sharing between phases depends on symmetric layout. Route the two gate-drive outputs with matched trace lengths to their MOSFETs, and keep each phase's power loop (boost inductor -> switch -> sense resistor -> bulk cap) identical in area and impedance. Mismatched loops cause one phase to carry more current, raising its temperature and eventually tripping phase protection. Place the IC close to both current-sense shunts and use Kelvin sensing directly at the shunt terminals to avoid ground-bounce-induced false current signals.
Although the TEA2376DT is a controller with modest dissipation, thermal design of the surrounding power stage determines system reliability. Estimated: at 1 kW output, 90% PFC-stage efficiency implies ~110 W of loss split across two phases, roughly 55 W per phase across inductor, MOSFET and diode. Provide adequate copper area under each phase's MOSFET and verify inductor core temperature at worst-case low-line, full-load operation. Do not rely on the SO14 package footprint alone for power-stage cooling - it only dissipates the IC's own quiescent and gate-drive losses.
Use NXP's TEA2376DB1623 user manual (UM11967) as the validated starting point rather than designing from scratch - it demonstrates the 1 kW standalone PFC with the TEA2376DT and TEA2209T including magnetics and configuration settings. A frequent pitfall is omitting or mis-configuring the X-capacitor discharge companion device, which is required for safety compliance when the front end has no bleeder resistor. Also confirm the correct ordering-code suffix (/1 vs /1Y) matches your packing requirement before release, and verify configuration settings against the latest datasheet revision, not third-party mirror copies.
Compliance Information
Distributor listings (Mouser/DigiKey) categorize TEA2376DT/1Y under RoHS-compliant PFC ICs; lead-free per NXP standard product policy. REACH, halogen-free and conflict-minerals declarations should be obtained from NXP's product-compliance portal for the exact date code.
