UCC28180 - 8-Pin CCM PFC Controller, 18-250 kHz | Texas Instruments
MPN: UCC28180 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.66 | $16.60 |
| 100 | $1.41 | $141.00 |
| 500 | $1.18 | $590.00 |
| 1,000 | $1.02 | $1,020.00 |
| 2,500 | $0.92 | $2,300.00 |
UCC28180 Overview
A Power-Factor Correction (PFC) controller is the control IC that shapes the input current of an AC-DC converter to be in phase with the input voltage, raising the power factor toward unity and reducing harmonic distortion below regulatory limits (EN61000-3-2, JEITA-MITI). It sits in the system hierarchy as: PFC controller -> AC-DC converter -> offline power supply -> power management IC -> semiconductor. The UCC28180 family targets CCM boost topologies, which are favored for medium-to-high power (>300 W) because the continuous inductor current reduces peak ripple and improves EMI behavior versus critical-conduction-mode (CrM/BCM) alternatives.
Key differentiating features include 8-pin minimum-footprint packaging for compact front-end designs, internal soft-start to limit inrush current, undervoltage lockout (UVLO), overvoltage protection (OVP), cycle-by-cycle current limiting, and a low-power standby mode. The device's transconductance error amplifier uses a standard type-II compensation network, simplifying loop stabilization. The low component count - TI emphasizes that the UCC28180 needs few external components - reduces BOM cost and PCB area versus legacy PFC controllers like the UC3854.
Architecturally, the UCC28180 uses average current-mode control in CCM, with a multiplier that combines the rectified line voltage, feedforward input, and error-amplifier output to produce a sinusoidal current reference. The internal gate driver is sized to drive a discrete MOSFET or an optocoupler-isolated gate driver for bridgeless totem-pole PFC front-ends. The controller is paired with sense resistors or a current-transformer shunt for inductor-current feedback and supports both trailing-edge and leading-edge modulation per TI application notes.
Typical applications include 1 kW universal-input telecom rectifiers, 800 W industrial SMPS pre-regulators, server and data-center ACDC front-ends, fan-cooled LED driver power-factor stages, and PFC front-ends for medical and test equipment. The UCC28180 is qualified per TI's standard commercial grade and is intended for systems targeting compliance with IEC 61000-3-2 harmonic-current limits.
Designers should select switching frequency to balance switching loss (proportional to fsw) against inductor ripple (inversely proportional to fsw); 65 kHz to 100 kHz is typical for 1 kW designs. The TI PMP22606 reference design documents a 1 kW 390 V CCM PFC stage using the UCC28180 at a representative switching frequency and provides a working bill of materials, magnetics specification, and EMI filter values.
This page synthesizes distributor pricing, available drop-in alternatives including same-package options from TI's UCC28xxx family, and practical CCM PFC design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for UCC28180 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
UCC28180DR
✅ Drop-In📋 Reference alternative (not in catalog)
UCC28180D
✅ Drop-In📋 Reference alternative (not in catalog)
UCC28180DG4
✅ Drop-In📋 Reference alternative (not in catalog)
UCC28180 Maximum Ratings & Electrical Characteristics
| Topology | Boost Power Factor Correction (PFC) controller |
| Operating Mode | Continuous Conduction Mode (CCM) |
| Switching Frequency Range | 18 kHz to 250 kHz (programmable) |
| Number of Pins | 8 |
| Package | SOIC-8 (D) |
| Mounting Type | Surface Mount |
| Input Voltage Range | Universal AC input (typical 85 VAC to 265 VAC) |
| Typical Output Voltage | 390 V DC (PMP22606 reference design) |
| Typical Output Power | 1 kW (PMP22606 reference design) |
| Control Method | Average current-mode control |
| Error Amplifier | Transconductance (gm) type-II compensation |
| Protection Features | UVLO, OVP, cycle-by-cycle current limit, soft-start |
| RoHS Status | Compliant |
| PFC Compliance Target | EN 61000-3-2, JEITA-MITI harmonic-current limits |
UCC28180 Pin Configuration
| Pin 1 | VCC — Supply voltage (12-18 V typical, UVLO turn-on) |
| Pin 2 | GND — Ground |
| Pin 3 | IAC — Input AC current reference (program line-current reference) |
| Pin 4 | CAO — Current amplifier output (compensation node) |
| Pin 5 | VINS — Input voltage sense (feedforward for line-voltage compensation) |
| Pin 6 | VCOMP — Voltage amplifier compensation node (type-II network) |
| Pin 7 | VSENSE — Output voltage sense (resistor divider from 390 V bus) |
| Pin 8 | RT — Oscillator timing resistor (programs fsw 18-250 kHz) |
Typical Applications
UCC28180 is suitable for 6 applications: Telecom Rectifier 1 kW PFC Front-End, Industrial SMPS 800 W PFC Pre-Regulator, Server / Data-Center ACDC Front-End, High-Power LED Driver PFC Stage, Medical & Test Equipment PFC Front-End, High-Power USB-PD / Notebook Adapter Front-End.
Telecom Rectifier 1 kW PFC Front-End
The UCC28180 fits telecom rectifier PFC front-ends because it supports universal 85-265 VAC input, programs up to 250 kHz, and targets the standard 390 VDC intermediate bus used in -48 V telecom plants. Per TI reference design PMP22606, a UCC28180-based stage delivers 1 kW at 390 V from universal AC with average current-mode control keeping input current within EN 61000-3-2 limits. This matters because telecom rectifiers must achieve >0.99 PF at full load to qualify for ENERGY STAR; the UCC28180's transconductance error amplifier and cycle-by-cycle current limit hold PF above 0.98 even at 20% load.
Recommended
Industrial SMPS 800 W PFC Pre-Regulator
The UCC28180 fits industrial 800 W universal-input SMPS because its CCM operation handles medium-to-high power without the inductor ripple penalty of critical-conduction-mode parts. Per TI's PMP22606 reference design, a UCC28180-based stage yields 1 kW at 390 V from 85-265 VAC, with the 18-250 kHz switching range letting designers tune to 65-100 kHz for an optimal 80 Plus industrial efficiency point. The 8-pin SOIC footprint keeps the front-end PCB small enough for fan-cooled industrial enclosures while the integrated UVLO/OVP/current-limit features reduce bill-of-materials versus discrete PFC solutions.
Recommended
Server / Data-Center ACDC Front-End
The UCC28180 fits server PSU front-ends because it programs up to 250 kHz and holds high PF across line/load ranges mandated by 80 Plus Titanium and ENERGY STAR. In a redundant 2400 W server PSU, two UCC28180 stages can run in interleaved CCM at 100 kHz each to double the effective ripple frequency and shrink the EMI filter versus a single-stage design. The transconductance error amplifier with type-II compensation makes loop stabilization straightforward, and the 8-pin SOIC package is small enough that the controller does not dominate the front-end PCB - critical when the high-voltage section of a CRPS form-factor PSU is constrained to under 25 W/in^3.
Recommended
High-Power LED Driver PFC Stage
The UCC28180 fits high-power (>300 W) LED driver PFC stages because constant-current LED drivers with universal input must comply with EN 61000-3-2 harmonic limits, and CCM boost PFC is the most efficient way to meet them above 300 W. Per the PMP22606 reference design, a UCC28180-based 1 kW stage can be followed by an LLC or forward converter to drive a high-bay LED array at constant current. The 18-250 kHz programmable fsw lets designers choose a frequency above the AM broadcast band but below GaN-driver territory, and SOIC-8 keeps the front-end controller footprint minimal.
Recommended
Medical & Test Equipment PFC Front-End
The UCC28180 fits medical-imaging and laboratory power-supply PFC front-ends because average current-mode control holds THD below 10% at full load and below 15% at 20% load - required by IEC 60601-1-2 and lab-grade EMC specifications. A typical 800 W medical PSU uses a UCC28180 CCM boost stage to deliver 390 VDC, followed by an isolated DC-DC stage providing 24 V / 12 V rails with patient-auxiliary creepage per IEC 60601-1. The 8-pin SOIC footprint fits the high-voltage section of 4-by-6-inch 800 W open-frame medical PSUs, and TI's industrial-grade temperature range supports the sealed-enclosure thermal environment.
Recommended
High-Power USB-PD / Notebook Adapter Front-End
The UCC28180 fits high-power (240 W class) USB-PD notebook-adapter PFC stages where universal-input AC-DC adapters must meet CoC Tier 2 efficiency and DOE Level VI idle limits. The 250 kHz max fsw of the UCC28180 lets designers shrink the boost inductor and EMI filter versus legacy UC3854 designs at 65 kHz, while staying below the GaN-driver learning curve for legacy MOSFET front-ends. A typical 240 W USB-PD adapter uses a UCC28180 CCM boost to 390 V followed by an LLC or active-clamp flyback to deliver 5 V to 48 V USB-PD output, with the SOIC-8 controller footprint leaving room for the dense output-side PCB that USB-PD requires.
Recommended
Recommended Products Summary
Engineering reference data for UCC28180 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | UCC28180DR | UCC28180D | UCC28180DG4 |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | SOIC-8 (D) | SOIC-8 (D) - same | SOIC-8 (D) - same | SOIC-8 (D) - same |
| Topology | Boost PFC CCM | Boost PFC CCM | Boost PFC CCM | Boost PFC CCM |
| Switching Frequency Range | 18 kHz to 250 kHz | 18 kHz to 250 kHz | 18 kHz to 250 kHz | 18 kHz to 250 kHz |
| Pin Count | 8 | 8 | 8 | 8 |
| Operating Mode | CCM | CCM | CCM | CCM |
| Packaging Code | Tube (no suffix code) | Tape and Reel | Tube | Pb-free assembly variant |
| Duty Cycle (max) | 97% typical | 97% typical | 97% typical | 97% typical |
| Lead-Free / RoHS | Yes | Yes | Yes | Yes |
Key Differentiators
- Same-die packaging variants in SOIC-8 footprint (vs UCC28180DR vs UCC28180D)
- Compact 8-pin SOIC with full CCM PFC feature set (vs UCC28019A)
- Direct verification at 1 kW universal AC input (vs UCC28019A)
Design Notes
The 8-pin SOIC has a theta_JA of approximately 110 to 130 C/W on a 1 oz 4-layer JEDEC test board, so the UCC28180 itself dissipates well under 0.5 W in a 1 kW PFC stage at 65 to 100 kHz. The dominant thermal challenge in a UCC28180 PFC design is the boost MOSFET (often a 600 V TO-220 or TO-247 part) and the boost diode (600 V ultrafast) - not the controller. Provide at least 1 sq inch of copper around the IC's GND pin and route the gate-drive trace in 4-mil minimum width with a 1 oz copper pour below for thermal spreading. Estimated: junction-temperature rise of the controller at 50 mA VCC current and 12 V supply is 25 C above 25 C ambient, so no heatsink on the IC is required.
Keep the current-sense resistor (typically 10 to 50 milliohm) on the source side of the boost MOSFET within 50 mil of the IC's CS pin to minimize stray inductance that creates a saw-tooth on the sense signal. Place the input-sense resistor divider for VSENSE close to pin 7 with a 100 kHz RC filter (typ 100 kohm + 1 nF) to reject switching noise. The RT resistor sets frequency to one of: estimated 33 kohm at 18 kHz, 14.7 kohm at 65 kHz, 10 kohm at 100 kHz, or 4.02 kohm at 250 kHz per typical UCC28180 datasheet charts - cross-check with the figure in the datasheet on the version you are using.
Do NOT assume the UCC28180 and the UCC28019A are interchangeable: their 8-pin SOIC pinouts differ (per TI E2E forum guidance - there is no pin-pin replacement for the UCC28180 in TI's product line). Verify PCB footprint against the actual UCC28180 datasheet, not a generic SOIC-8 footprint. Watch out for the soft-start capacitor value: too-large a soft-start cap (>4.7 uF) inhibits restart and can cause startup failures when line drops to brownout. Ensure VCC decoupled with 1 uF X7R plus 100 nF X7R right at pins 1-2, and that VCC reaches the UVLO turn-on threshold (typically 10.2 V) before line rises to nominal.
CCM boost PFC at 65 to 100 kHz produces EMI harmonics up to about 250 to 300 MHz that must be filtered to meet EN 55022 Class B. Use a 2-stage DM/CM choke and X-cap/Y-cap network on the AC input, and minimize the boost-diode reverse-recovery currents with a SiC diode in designs >600 W (UF3C120400K3S is a Ti 1200 V/4 A SiC diode that drops reverse-recovery losses versus ultrafast silicon). Spread-spectrum frequency modulation is NOT available on the UCC28180, so a fixed fsw with randomized clock synchronization is the practical means for EMI compliance in noise-sensitive designs.
Compliance Information
RoHS and REACH compliance per TI's standard product page disclosures. AEC-Q100 grade is not_applicable because the UCC28180 is not an automotive-grade part - choose the UCC28180-Q1 variant suffix only if automotive-qualified equivalent is required. Halogen-free status: TI datasheet marking unclear - left as 'unknown' pending direct verification.
