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ST L6566BHRoHS

Manufacturer
ST
MPN
L6566BH
LCSC Part #
C2971649
Packaging
SO-16
Customer #
Key Attributes
Multimode controller for SMPS
Datasheetpdf iconST L6566BH
In-Stock: 62
62 In stock, ships now
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QtyUnit PriceTotal Amount
1+$ 1.5055$ 1.51
10+$ 1.473$ 14.73
30+$ 1.4502$ 43.51
100+$ 1.429$ 142.90
Standard Packaging50/Full Tube
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Products Specifications

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TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/AC DC Converters, Offline Switchers
ManufacturerST
PackagingSO-16
Operating Temperature-40℃~+150℃
Output Current600mA;800mA
Frequency - Switching10kHz~300kHz
Pd - Power Dissipation750mW
Voltage - Breakdown840V
Voltage - Supply8V~23V
FeaturesSoft-start;Over Voltage Protection;Short Circuit Protection;Overtemperature protection (OTP);Over Current Protection;Under Voltage Protection
TopologyFlyback
Output Voltage-
Duty Cycle(Max)75%
Feedback SystemSecondary-Side Feedback
Working ModePWM Modulation;QR
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Additional Information

TypeDetails
Minimum1
Multiple1
Standard Packaging50
Sales UnitPiece

Introduction

AI Translation

The L6566BH is an extremely versatile current-mode primary controller IC, specifically designed for high-performance offline flyback converters running off rectified 3-phase input lines. It is also suited to single-stage, single-switch, input-current-shaping converters (single-stage PFC) for applications that must comply with EN61000-3-2 or JEITA-MITI regulations. Both fixed-frequency (FF) and quasi-resonant (QR) operation are supported. The user can choose either of the two depending on application needs. The device features an externally programmable oscillator: it defines the converter switching frequency in FF mode and the maximum allowed switching frequency in QR mode. When FF operation is selected, the ICs work as a standard current-mode controller with a maximum duty cycle limited to 70% min. The oscillator frequency can be modulated to mitigate EMI emissions. QR operation, when selected, occurs at heavy load and is achieved through a transformer demagnetization sensing input that triggers MOSFET turn-on. Under some conditions, ZVS (zero-voltage switching) can be achieved. The converter’s power capability rise with the mains voltage is compensated by line voltage feedforward. At medium and light load, as the QR operating frequency equals the oscillator frequency, a function (valley skipping) is activated to prevent further frequency rise and keep the operation as close to ZVS as possible.

Features

AI Translation
  • Selectable multimode operation: fixed frequency or quasi-resonant
  • On-board 840 V high voltage startup
  • Advanced light load management
  • Low quiescent current (<3 mA)
  • Adaptive UVLO
  • Line feedforward for constant power capability vs. mains voltage
  • Pulse-by-pulse OCP, shutdown on overload (latched or auto-restart)
  • Transformer saturation detection
  • Programmable frequency modulation for EMI reduction
  • Latched or auto-restart OVP
  • Brownout protection
  • -600/+800 mA totem pole gate driver with active pull-down during UVLO
  • SO16N package

Applications

AI Translation
  • Industrial SMPS
  • SMPS running off rectified 3-phase input line