Overview
The FAN4800AUM is a highly integrated Power Factor Correction (PFC) and Pulse Width Modulation (PWM) controller combination designed by onsemi. This component is specifically tailored for power supplies that incorporate boost PFC and PWM stages, requiring minimal external components to achieve comprehensive protections and compensation. Available in a 16-pin Small Outline Package (SOP), the FAN4800AUM is pin-to-pin compatible with several other controllers, including ML4800, FAN4800, CM6800, and CM6800A.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Operating Ambient Temperature (TA) | -40 | 105 | °C | |
| Startup Current (IDD-ST) | 30 | 80 | µA | |
| Operating Current (IDD-OP) | 2.0 | 2.6 | 5.0 | mA |
| Turn-on Threshold Voltage (VTH-ON) | 10 | 11 | 12 | V |
| VDD OVP | 27 | 28 | 29 | V |
| Oscillator Frequency (fOSC-RT/CT) | 240 | 256 | 268 | kHz |
| PFC & PWM Frequency | 60 | 64 | 67 | kHz |
| Supply Voltage (VDD) | 11 | 22 | V |
Key Features
- PWM configurable for Current-Mode or Feed-Forward Voltage-Mode Operation.
- Internally synchronized leading-edge PFC and trailing-edge PWM in one IC.
- Low operating current.
- Innovative Switching-Charge Multiplier Divider.
- Average-Current-Mode for Input-Current Shaping.
- PFC Over-Voltage and Under-Voltage Protections.
- PFC Feedback Open-Loop Protection.
- Cycle-by-Cycle Current Limiting for PFC/PWM.
- Power-on Sequence Control and Soft-Start.
- Line Sagging Protection.
Applications
- Desktop PC Power Supply.
- Internet Server Power Supply.
- LCD TV/ Monitor Power Supply.
- UPS (Uninterruptible Power Supply).
- Battery Charger.
- DC Motor Power Supply.
- Monitor Power Supply.
- Telecom System Power Supply.
- Distributed Power.
Q & A
- What is the primary function of the FAN4800AUM?
The FAN4800AUM is a highly integrated PFC and PWM controller combination designed for power supplies that incorporate boost PFC and PWM stages.
- What are the available package types for the FAN4800AUM?
The FAN4800AUM is available in 16-pin Small Outline Package (SOP) and 16-pin Dual Inline Package (DIP).
- What is the operating temperature range for the FAN4800AUM?
The operating ambient temperature range is from -40°C to +105°C.
- What are the key protection features of the FAN4800AUM?
The FAN4800AUM includes PFC Over-Voltage and Under-Voltage Protections, PFC Feedback Open-Loop Protection, and Cycle-by-Cycle Current Limiting for PFC/PWM.
- Can the PWM be configured in different modes?
Yes, the PWM can be configured for Current-Mode or Feed-Forward Voltage-Mode Operation.
- What is the typical oscillator frequency for the FAN4800AUM?
The typical oscillator frequency is 256 kHz.
- What are some common applications for the FAN4800AUM?
Common applications include Desktop PC Power Supply, Internet Server Power Supply, LCD TV/ Monitor Power Supply, UPS, Battery Charger, and more.
- Does the FAN4800AUM support soft-start and power-on sequence control?
Yes, it includes Power-on Sequence Control and Soft-Start features.
- What is the supply voltage range for the FAN4800AUM?
The supply voltage range is from 11 V to 22 V.
- Is the FAN4800AUM compatible with other controllers?
Yes, it is pin-to-pin compatible with ML4800, FAN4800, CM6800, and CM6800A.
