Key facts
- Brand
- STMicroelectronics
- Model
- L6566A
- Industry
- Industrial
- Documents
- 5
- Languages
- EN
- Last added
- 2012-08-10
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STMicroelectronics L6566A Multi-mode Controller for SMPS with PFC Front-end Manual
The L6566A is a versatile current‑mode primary controller designed for high‑performance offline flyback converters with a front‑end Power Factor Correction stage. It supports both fixed‑frequency and quasi‑resonant operation, offers a 700 V high‑voltage start‑up generator, low quiescent current and adaptive UVLO, and includes multiple protection functions such as brownout, OVP and OCP.
The document contains sections on description, pin settings, electrical data, electrical characteristics, application information, package mechanical data, order codes and revision history, providing the necessary details for designers to implement the device in their power‑supply designs.
STMicroelectronics L6566A specifications
| Output voltage | 19 V |
|---|---|
| Output current | 4 A |
| Input mains range | 90 to 264 Vac |
| Frequency range | 45 to 65 Hz |
| Standby consumption | < 0.14 W |
| Active load efficiency | better than 87% |
| Dimensions | 78 x 170 mm |
| PCB type | Single-side |
All STMicroelectronics L6566A documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Ratings, dimensions and ordering codes, for selection and design work.
How to use the product for one specific task, with worked examples.
Questions answered in these manuals
What is the output voltage of the reference board?
The output voltage is 19 V at 4 A continuous operation.
Is the design compliant with ENERGY STAR criteria?
Yes, the design is compliant with the latest computer document (EPA rev. 5.0 computers) effective July 2009.
What is the maximum duty cycle in fixed‑frequency mode?
The maximum duty cycle is limited to 70 %.
From: STMicroelectronics L6566A Multi-mode Controller for SMPS with PFC Front-end Datasheet
How much current can the gate driver source and sink?
The gate driver can source and sink up to 800 mA.
From: STMicroelectronics L6566A Multi-mode Controller for SMPS with PFC Front-end Datasheet
What operating modes does the L6566A support?
Both Fixed‑frequency (FF) and Quasi‑resonant (QR) operation are supported.
From: STMicroelectronics L6566A Multi-mode Controller for SMPS with PFC Front-end Manual
What protection is provided against undervoltage?
The device includes a non‑latched input undervoltage (brownout) protection.
From: STMicroelectronics L6566A Multi-mode Controller for SMPS with PFC Front-end Manual