TEA2376BT-1Y - Digital Interleaved PFC Controller | NXP
MPN: TEA2376BT-1Y β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.95 | $1.95 |
| 10 | $1.8 | $18.00 |
| 100 | $1.62 | $162.00 |
| 500 | $1.45 | $725.00 |
| 1,000 | $1.31 | $1,310.00 |
TEA2376BT-1Y Overview
A PFC controller is a power management IC that shapes the input current waveform of an AC-DC power supply so that it follows the input voltage, maximizing power factor and minimizing harmonic distortion. Within the power-supply control hierarchy, the PFC stage sits between the input rectifier and the downstream DC-DC converter, ensuring compliance with harmonic-current regulations such as those applied to TVs, servers and industrial equipment.
Key features include digital configurability that reduces external component count, two-phase interleaving that halves input ripple current and spreads thermal stress across two boost stages, and valley switching that minimizes switching losses for high efficiency. For light-load conditions the controller supports phase shedding and burst mode operation, improving standby and low-load efficiency in modern energy-regulated designs.
Technically, the TEA2376 family implements its control loop digitally, allowing configuration of protection thresholds, frequency ranges and phase management without resistor-capacitor tuning. Discontinuous conduction and quasi-resonant operation avoid hard-switching turn-on losses, while interleaving cancels ripple currents at the PFC input, simplifying EMI filter design.
Typical applications include TV power supplies, computing and server power supplies, and industrial power systems where a regulated DC bus (typically around 380-400 V from a boost PFC stage) feeds a downstream flyback or LLC converter. The interleaved topology suits power levels where a single boost phase would be thermally or ripple limited.
When designing with the TEA2376BT/1Y, verify the supply voltage range (22 V per distributor data) and configure the switching-frequency window so that valley switching remains valid across the full mains and load range.
This page synthesizes distributor pricing, lifecycle data, and practical design guidance for the TEA2376BT/1Y not consolidated in the manufacturer datasheet.
Drop-in alternatives for TEA2376BT-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:
TEA2376BT/1
β Drop-Inπ Reference alternative (not in catalog)
TEA2376BT
β Drop-Inβ In Stock
$1.48 / Unit
View Datasheet βTEA2376BT-1Y Maximum Ratings & Electrical Characteristics
| Function | Digital configurable two-phase interleaved PFC controller |
| Control Mode | Discontinuous (Transition) Conduction Mode / Quasi-Resonant with valley switching |
| Switching Frequency Range | 40 kHz to 130 kHz |
| Number of Phases | 2 (interleaved) |
| Supply Voltage | 22 V |
| Operating Temperature | -25C to +125C (TJ) |
| Package | 14-SOIC (0.154 in, 3.90 mm width) |
| Mounting Type | Surface Mount |
| Light-Load Features | Phase shedding and burst mode operation |
| Application | PFC (Power Factor Correction) |
| Application Power Range | TV, computing, server and industrial power supplies |
| Packaging | Tape & Reel (TR), Cut Tape (CT) |
TEA2376BT-1Y 14-soic (0.154 in, 3.90 mm width) Pin Configuration Guide
Pin configuration for TEA2376BT-1Y (14-soic (0.154 in, 3.90 mm width) 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 TEA2376BT-1Y.
Refer to the datasheet for full pin configuration.
Typical Applications
TEA2376BT-1Y is suitable for 6 applications: TV Power Supplies, Server and Computing Power Supplies, Industrial Power Supplies, High-Efficiency AC-DC Adapter Front Ends, EMI-Constrained Designs, Light-Load Efficiency Critical Systems.
TV Power Supplies
The TEA2376BT/1Y fits TV power supplies because its two-phase interleaved PFC topology reduces input ripple current and its phase shedding plus burst mode maintain efficiency at the very low standby and light loads that energy regulations demand. In a typical TV power board, the controller drives two interleaved boost phases from the rectified mains, producing a regulated high-voltage DC bus that feeds downstream flyback or LLC converters. Digital configurability lets designers tune frequency range and protection without hardware changes, and valley switching at 40-130 kHz lowers switching losses for cool, quiet operation across worldwide mains inputs.
Recommended
Server and Computing Power Supplies
In server and computing PSUs, power factor must stay high across a wide load range while harmonic distortion stays within regulatory limits, which is exactly what the TEA2376BT/1Y's DCM/QR valley-switching interleaved control delivers. The 180-degree phase interleaving halves input ripple current, shrinking the EMI filter and input bulk capacitors, while two phases share thermal stress across smaller inductors and MOSFETs - valuable in the dense form factors of modern server power shelves. Burst mode and phase shedding keep light-load efficiency high for servers idling in data centers, directly reducing annual energy overhead.
Recommended
Industrial Power Supplies
Industrial AC-DC power supplies benefit from the TEA2376BT/1Y's robust -25C to +125C junction temperature range and 22 V supply rating, which tolerate the wide ambient and line-transient conditions found in factory environments. The digital configurable architecture allows the same controller to be re-tuned for different power ratings, simplifying platform designs across product families. Its interleaved boost PFC front end generates a well-regulated high-voltage DC bus for downstream LLC or flyback stages powering PLCs, drives, and instrumentation, while valley switching reduces EMI in electrically noisy industrial settings.
Recommended
High-Efficiency AC-DC Adapter Front Ends
For external adapters and desktop PSU front ends that must meet harmonic-current and efficiency standards, the TEA2376BT/1Y provides a transition-mode PFC stage that avoids hard-switching losses through valley switching. The controller's discontinuous conduction operation keeps the boost inductor current returning to zero each cycle, simplifying design of the current-shaping loop compared with continuous-mode controllers. Its light-load burst mode helps designs clear stringent no-load and low-load input-power limits, and the compact 14-SOIC package suits the tight board space of wall-mount and desktop adapter formats.
Recommended
EMI-Constrained Designs
Designs with tight EMI headroom gain directly from two-phase interleaving: the 180-degree phase offset causes the input ripple currents of the two boost stages to partially cancel, reducing the fundamental ripple component and easing the input EMI filter design. The TEA2376BT/1Y's valley switching additionally suppresses high-frequency turn-on ringing that dominates conducted EMI spectra in transition-mode PFC stages. Digital configuration of the frequency window lets engineers steer switching harmonics away from sensitive bands, an advantage in audio, measurement and networking equipment sharing an AC mains line with the supply.
Recommended
Light-Load Efficiency Critical Systems
Systems that spend most of their life at low load - set-top boxes, monitors, and networked appliances - exploit the TEA2376BT/1Y's phase shedding and burst mode operation, described on the NXP TEA2376 family page. Phase shedding disables one interleaved phase at light load so the remaining phase operates at its efficiency sweet spot, while burst mode skips switching cycles entirely at very low load, cutting gate-drive and switching losses. Together these features let products meet increasingly strict standby and part-load efficiency regulations without additional circuitry or firmware intervention.
Recommended
Recommended Products Summary
Engineering reference data for TEA2376BT-1Y β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TEA2376BT/1 | TEA2376BT |
|---|---|---|---|
| Package | 14-SOIC (3.90 mm width) | 14-SOIC - same | 14-SOIC - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Topology | Two-phase interleaved PFC | Two-phase interleaved PFC | Two-phase interleaved PFC |
| Control Mode | DCM / Quasi-Resonant with valley switching | DCM / Quasi-Resonant with valley switching | DCM / Quasi-Resonant with valley switching |
| Switching Frequency | 40 kHz to 130 kHz | 40 kHz to 130 kHz | 40 kHz to 130 kHz |
| Light-Load Features | Phase shedding + burst mode | Phase shedding + burst mode | Phase shedding + burst mode |
Key Differentiators
- Digital configurability reduces BOM and tuning effort (vs TEA2376BT/1)
- Two-phase interleaving halves input ripple current (vs TEA2376BT)
- Phase shedding and burst mode at light load (vs TEA2376BT/1)
Design Notes
Place the controller close to the two boost MOSFET gate-drive loops and keep gate-drive traces short and symmetric between the two phases so the 180-degree interleaving is preserved at high frequency. Star-ground the IC's ground reference and return high di/dt MOSFET source currents on a separate power ground pour joined at a single point. The 14-SOIC package has modest thermal capability, so the controller itself dissipates little, but verify sense-resistor and gate-driver path impedance against the TEA2376 datasheet layout guidelines.
The TEA2376BT/1Y supports a 22 V supply per distributor data. When powering it from an auxiliary winding of the PFC inductor, clamp the VCC with a zener or ensure the winding turns ratio keeps the supply within range at maximum mains, since aux voltage scales with output bus voltage and load. Verify the UVLO turn-on/turn-off thresholds in the datasheet match your aux-supply startup sequencing from the high-voltage startup source.
Do not assume single-phase PFC layout rules apply unchanged: the two interleaved phases must use matched inductance and current-sensing so current shares equally; mismatch causes one phase to carry more current and thermally dominate. Also configure the 40-130 kHz frequency window so valley switching stays valid at minimum input voltage and full load - if the frequency saturates at its limit before zero-current detection, efficiency drops and audible noise can appear.
Compliance Information
Compliance status not explicitly stated in retrieved distributor data as of 2026-09-13. Confirm on the official NXP product page at nxp.com/part/TEA2376BT.
