Overview
The UCC28064ADR, produced by Texas Instruments, is a Natural Interleaving™ Transition-Mode Power Factor Correction (PFC) controller. This device is designed to enhance the efficiency and reliability of power systems, particularly in high-power applications. It features a unique Natural Interleaving technique where both channels operate as masters, synchronized to the same frequency, which enables faster response times and excellent phase-to-phase on-time matching. The UCC28064ADR is packaged in a 16-pin SOIC and operates over a wide temperature range of -40°C to +125°C.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC Turn-On Threshold | 9.45 | 10.35 | 11.1 | V |
| VCC Turn-Off Threshold | 8.8 | 9.6 | 10.7 | V |
| VCC UVLO Hysteresis | 0.68 | 0.8 | 0.9 | V |
| VCC Current (Enabled) | 5 | 7 | 8 | mA |
| VCC Current (Burst Mode) | 650 | 750 | 850 | µA |
| Junction-to-Ambient Thermal Resistance | 91.6 | °C/W | ||
| Operating Temperature Range | -40 | 125 | °C |
Key Features
- Input filter and output capacitor ripple-current reduction, enhancing system reliability and reducing EMI filter size.
- High light-load efficiency with burst mode operation and adjustable burst threshold.
- Sensorless current-shaping to simplify board layout and improve efficiency.
- Input line feed-forward for fast line transient response.
- Inrush-safe current limiting to prevent MOSFET conduction during inrush and eliminate CCM operation and reverse recovery events in the output rectifier.
- User-adjustable phase management with input voltage compensation.
- Compliance with EUP Lot6 Tier II, CoC Tier II, and DOE Level VI standards.
Applications
- HDTV, U-HDTV, and LED TVs.
- All-in-one PCs.
- Gaming systems.
- Adapters.
- Home audio systems.
Q & A
- What is the operating temperature range of the UCC28064ADR?
The operating temperature range is -40°C to +125°C.
- What is the typical VCC turn-on threshold for the UCC28064ADR?
The typical VCC turn-on threshold is 10.35 V.
- How does the UCC28064ADR improve light-load efficiency?
The device improves light-load efficiency through burst mode operation with an adjustable burst threshold.
- What are the key benefits of the Natural Interleaving technique used in the UCC28064ADR?
The Natural Interleaving technique enables faster response times and excellent phase-to-phase on-time matching.
- What are some of the compliance standards met by the UCC28064ADR?
The device complies with EUP Lot6 Tier II, CoC Tier II, and DOE Level VI standards.
- How does the UCC28064ADR handle inrush current?
The device features inrush-safe current limiting to prevent MOSFET conduction during inrush and eliminate CCM operation and reverse recovery events in the output rectifier.
- What is the junction-to-ambient thermal resistance of the UCC28064ADR in an SOIC package?
The junction-to-ambient thermal resistance is 91.6 °C/W.
- What types of systems can benefit from using the UCC28064ADR?
Systems such as HDTVs, all-in-one PCs, gaming systems, adapters, and home audio systems can benefit from using the UCC28064ADR.
- How does the sensorless current-shaping feature of the UCC28064ADR benefit the system design?
The sensorless current-shaping feature simplifies the board layout and improves efficiency by eliminating the need for current sensors.
- What is the package type and size of the UCC28064ADR?
The UCC28064ADR is packaged in a 16-pin SOIC with dimensions of 9.90 mm × 3.91 mm.
