UCC28019ADR - 65kHz CCM PFC Controller | Texas Instruments
MPN: UCC28019ADR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.85 | $0.85 |
| 10 | $0.77 | $7.70 |
| 100 | $0.63 | $63.00 |
| 500 | $0.52 | $260.00 |
| 1,000 | $0.42 | $420.00 |
UCC28019ADR Overview
A PFC controller is a specialized power management IC that shapes the input current of an AC-DC power supply to be sinusoidal and in phase with input voltage, improving power factor and reducing harmonics to meet standards such as IEC 61000-3-2. In a boost PFC, the controller regulates the DC bus voltage while forcing input current to follow input voltage. PFC controllers belong to the broader family of switch-mode power supply control ICs within power management.
Key features include the 8-pin solution that reduces external component count, wide-range universal AC input, fixed 65-kHz switching, output over/under voltage protection, open-loop protection, overcurrent protection, and enhanced start-up and transient response. Average current mode control delivers stability and noise immunity, supported by an internal reference, error amplifier, and PWM comparator. UVLO thresholds are 10.5 V on and 9.5 V off, with a maximum Vin of 21 V.
Typical applications include desktop computer and server power supplies, telecom rectifiers, industrial power systems, LED lighting drivers, and battery chargers that must meet power quality regulations. The controller supports both sub-150 W and above-750 W application ranges.
When designing with the UCC28019ADR, keep gate drive and current-sense paths short and low inductance, place the sense resistor near the IC with a Kelvin connection, and avoid accidental triggering of the 0.77 V VSENSE standby threshold during normal operation.
Drop-in alternatives for UCC28019ADR — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with UCC28019ADR (same form factor and footprint) — differing in Topology, Package, Input Line Range, Maximum Duty Cycle, Protection Features.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
UCC28019AQDRQ1
✅ Drop-In✓ In Stock
$0.78 / Unit
View Datasheet →UCC28019AD
✅ Drop-In📋 Reference alternative (not in catalog)
UCC28019D
✅ Drop-In📋 Reference alternative (not in catalog)
NCP1608BDR2G
⚡ Same Package ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
L6562AD
⚡ Same Package ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
UCC28019ADR Maximum Ratings & Electrical Characteristics
| Topology | Boost |
| Control Mode | Continuous Conduction Mode (CCM), Average Current Mode |
| Switching Frequency | 65 kHz (fixed) |
| Maximum Duty Cycle | 98% (typ) |
| Power Range | 100 W to >2 kW |
| Input Voltage (Vin max) | 21 V |
| UVLO Thresholds (on/off) | 10.5 V / 9.5 V |
| Start-up Current (UVLO) | < 200 uA |
| Standby Mode Threshold | VSENSE < 0.77 V |
| Input Line Range | Wide-range universal AC |
| Protection Features | Output OVP/UVP, open-loop protection, overcurrent protection |
| Package | SOIC-8 (D) |
| Mounting Type | Surface Mount |
| Packaging | Tape and Reel (DR suffix) |
| RoHS Status | Compliant |
| Application Range | < 150 W applications; > 750 W applications |
UCC28019ADR Pin Configuration
| Pin 1 | GND — Ground reference |
| Pin 2 | COMP — Voltage loop compensation |
| Pin 3 | ICOMP — Current loop compensation |
| Pin 4 | ISENSE — Current sense input |
| Pin 5 | VCOMP — Voltage loop soft-start/compensation |
| Pin 6 | VSENSE — Output voltage feedback; below 0.77 V enters standby |
| Pin 7 | VCC — Supply voltage (max 21 V) |
| Pin 8 | GATE — Gate drive output for boost MOSFET |
Typical Applications
UCC28019ADR is suitable for 6 applications: Desktop and Server Power Supplies, Telecom Rectifiers, Industrial Power Systems, LED Lighting Drivers, Battery Chargers, Automotive On-Board Chargers.
Desktop and Server Power Supplies
The UCC28019ADR's 100 W to >2 kW CCM boost PFC range aligns directly with ATX and server front-end requirements under universal AC input. Its fixed 65-kHz frequency and 98% maximum duty cycle allow compact boost inductor design, while average current mode control maintains low THD at light and heavy loads. Placed ahead of a downstream LLC or flyback converter, the controller regulates the 380-400 V DC bus with OVP and open-loop protection. TI documents support for both <150 W and >750 W applications, making it a single controller choice across product families.
Recommended
Telecom Rectifiers
Telecom rectifier modules converting -48 V DC systems' AC front ends benefit from the UCC28019ADR's universal AC input capability and sub-200 uA start-up current, which permits a low-power start-up resistor network from the rectified line. The 0.77 V VSENSE standby threshold enables no-load power savings for efficiency mandates. CCM operation keeps input current continuous and low-ripple across wide load ranges typical of telecom deployment, and the SOIC-8 package with fewer external components reduces module size and BOM cost in high-volume rectifier builds.
Recommended
Industrial Power Systems
Industrial AC-DC systems in the several-hundred-watt class use the UCC28019ADR for its robust protection suite: output over/under voltage, open-loop, and overcurrent protection safeguard the boost stage during faults, brownouts, and start-up transients. The 21 V Vin maximum with 10.5 V/9.5 V UVLO provides defined behavior on noisy factory power. Its 65-kHz fixed frequency allows standard EMI filter designs to meet conducted emissions, and average current mode control tolerates the wide load steps typical of industrial automation and motor-adjacent supplies.
Recommended
LED Lighting Drivers
High-power LED drivers above 100 W must meet power factor and harmonic requirements, and the UCC28019ADR delivers CCM boost PFC with high PF across dimming load ranges. The controller's ability to operate down to <150 W and above 750 W covers industrial LED luminaires and street lighting. Start-up below 200 uA enables low standby draw for occupancy-controlled fixtures, and the VSENSE-based standby mode supports dark-state power limits. Fixed 65-kHz operation keeps switching noise out of the visible-light flicker band and simplifies EMI filter design for luminaire certification.
Recommended
Battery Chargers
AC-powered battery chargers for e-mobility and industrial batteries need PFC front ends meeting IEC 61000-3-2 harmonics, which the UCC28019ADR's CCM average current mode control achieves across the full charge curve from constant current to trickle. Its >2 kW capability covers fast-charger power levels, while enhanced transient response (an A-version improvement) handles load steps when the charger connects and disconnects the battery. Overvoltage and open-loop protection protect the DC bus during cable faults, a frequent field condition in charger deployments.
Recommended
Automotive On-Board Chargers
For automotive and e-mobility programs, the pin-compatible AEC-Q100-qualified UCC28019AQDRQ1 lets designers develop with the standard UCC28019ADR and drop in the qualified part for production. On-board charger PFC stages in the 1-3 kW class exploit the CCM boost topology's low input current ripple under wide battery charging loads. The 65-kHz fixed frequency suits magnetics designed for automotive thermal limits, and the 8-pin solution minimizes component count in space-constrained OBC housings where reliability and simplified qualification matter.
Recommended
Recommended Products Summary
Engineering reference data for UCC28019ADR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | UCC28019AQDRQ1 | UCC28019AD | UCC28019D | NCP1608BDR2G |
|---|---|---|---|---|---|
| Package | SOIC-8 (D) | SOIC-8 (D) - same | SOIC-8 (D) - same | SOIC-8 (D) - same | SOIC-8 - same body, different pinout |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | onsemi |
| Control Mode | CCM, average current mode | CCM, average current mode | CCM, average current mode | CCM, average current mode | Voltage-mode/transition |
| AEC-Q100 Qualified | No | Yes | No | No | No |
Key Differentiators
- 8-pin CCM solution with minimal external components (vs NCP1608BDR2G)
- Automotive drop-in path available (vs UCC28019AQDRQ1)
- Enhanced start-up and transient response vs original version (vs UCC28019D)
Design Notes
Place the current sense resistor directly adjacent to the ISENSE pin with a Kelvin ground connection to prevent switching noise from corrupting the average-current-mode loop. Keep the GATE-to-MOSFET trace short (under 15 mm recommended) and route it away from VSENSE and COMP nodes. Per TI datasheet layout guidance, the VCC decoupling capacitor (0.1 uF ceramic plus bulk) must sit within a few millimeters of pin 7 to ensure clean gate drive during UVLO transients.
The VSENSE pin has a dual function: feedback and standby control. If output ripple or a compensation network transient pulls VSENSE below 0.77 V, the controller unintentionally enters low-power standby, collapsing the PFC bus. Size the feedback divider so minimum normal VSENSE stays well above 0.77 V, and verify behavior during load transients and AC brownout on the bench. Also confirm Vin never exceeds 21 V absolute maximum - use a shunt regulator on VCC if the auxiliary supply can spike.
The SOIC-8 controller itself dissipates little power, but the boost MOSFET and current sense resistor dominate thermal design. At 65 kHz CCM and >2 kW levels, verify sense resistor power (I^2R) and MOSFET conduction plus switching losses with a proper heatsink or cold plate. The controller's GATE drive strength should be matched to the MOSFET gate charge; excessive external gate resistance increases switching loss, while too little invites ringing that can falsely trigger ISENSE protection.
Compliance Information
RoHS compliant and lead-free per TI product data. For AEC-Q100 requirement use UCC28019AQDRQ1. REACH and halogen-free status not stated in provided data.
