Overview
The L6563A is an advanced transition-mode Power Factor Correction (PFC) controller manufactured by STMicroelectronics. It is designed to operate in Transition Mode (TM) and is based on the core of a standard TM PFC controller, offering improved performance and additional functions. The device is available in a SOIC-14 package and is suitable for high-power applications, including HI-END AC-DC adapters, chargers, desktop PCs, servers, and web servers. It complies with industry standards such as IEC61000-3-2 and JEIDA-MITI, making it an excellent choice for SMPS (Switch-Mode Power Supplies) exceeding 350W.
Key Specifications
| Attribute | Value |
|---|---|
| Mode | DCM (Discontinuous Conduction Mode) |
| Supply Current - Max | 5.5 mA |
| Supply Voltage - Max | 22 V |
| Power Dissipation | 0.75 W |
| Operating Temperature Range | -25°C to +150°C |
| Thermal Resistance | 120°C/W |
| Storage Temperature Range | -55°C to +150°C |
| Package Style | SOIC-14 |
| Mounting Method | Surface Mount |
| Internal Reference Voltage | 1.5% (@ Tj = 25°C) |
| Gate Driver Current | -600/+800 mA |
| Start-up Current | ≤ 90 µA |
| Quiescent Current | ≤ 5 mA |
Key Features
- Very precise adjustable output overvoltage protection
- Tracking boost function
- Protection against feedback loop failure (Latched shutdown)
- Interface for cascaded converter's PWM controller
- Input voltage feedforward (1/V2)
- Remote ON/OFF control
- Low (≤90µA) start-up current
- 5mA max. quiescent current
- 1.5% (@ Tj = 25°C) internal reference voltage
- -600/+800 mA totem pole gate driver with active pull-down during UVLO
Applications
- PFC pre-regulators for HI-END AC-DC adapters and chargers
- Desktop PCs, servers, and web servers
- IEC61000-3-2 or JEIDA-MITI compliant SMPS, in excess of 350W
Q & A
- What is the primary function of the L6563A?
The L6563A is a Power Factor Correction (PFC) controller designed to improve the power factor in switch-mode power supplies.
- What package type is the L6563A available in?
The L6563A is available in a SOIC-14 package.
- What is the maximum supply voltage for the L6563A?
The maximum supply voltage for the L6563A is 22 V.
- What is the operating temperature range of the L6563A?
The operating temperature range is -25°C to +150°C.
- Does the L6563A have overvoltage protection?
Yes, the L6563A features very precise adjustable output overvoltage protection.
- How does the L6563A handle feedback loop failures?
The L6563A has protection against feedback loop failures, which results in a latched shutdown.
- What is the purpose of the tracking boost function in the L6563A?
The tracking boost function allows the output voltage to be changed proportionally to the mains voltage.
- Can the L6563A be remotely controlled?
Yes, the L6563A supports remote ON/OFF control.
- What is the quiescent current of the L6563A?
The quiescent current of the L6563A is ≤ 5 mA.
- Is the L6563A compliant with industry standards?
Yes, the L6563A is compliant with standards such as IEC61000-3-2 and JEIDA-MITI.
