L6565 IC – (SMD Package) – Quasi-Resonant SMPS Controller IC
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Description
The L6565 is a current-mode primary controller IC, specifically designed to build offline Quasi-resonant ZVS (Zero Voltage Switching at switch turn-on) flyback converters. Quasi-resonant operation is achieved by means of a transformer demagnetization sensing input that triggers MOSFET’s turn-on.
Converter’s power capability variations with the mains voltage are compensated by line voltage feedforward. At light load the device features a special function that automatically lowers the operating frequency still maintaining the operation as close to ZVS as possible. In addition to very low start-up and quiescent currents, this
feature helps keep low the consumption from the mains at light load and be Blue Angel and Energy Star compliant.
The IC includes also a disable function, an on-chip filter on current sense, an error amplifier with a precise reference voltage for primary regulation and an effective two-level overcurrent protection.
Features of L6565 IC:-
- QUASI-RESONANT (QR) ZERO-VOLTAGESWITCHING (ZVS) TOPOLOGY
- LINE FEED FORWARD TO DELIVER CONSTANT POWER vs. MAINS CHANGE
- FREQUENCY FOLDBACK FOR OPTIMUM STANDBY EFFICIENCY
- PULSE-BY-PULSE & HICCUP-MODE OCP
- ULTRA-LOW START-UP (< 70?A) AND QUIESCENT CURRENT (< 3.5mA)
- DISABLE FUNCTION (ON/OFF CONTROL)
- 1% PRECISION (@ Tj = 25?C) INTERNAL REFERENCE VOLTAGE
- ?400mA TOTEM POLE GATE DRIVER WITH UVLO PULL-DOWN
- BLUE ANGEL, ENERGY STAR, ENERGY 2000 COMPLIANT
Applications of L6565 IC:-
- TV/MONITOR SMPS
- AC-DC ADAPTERS/CHARGERS
- DIGITAL CONSUMER
- PRINTERS, FAX MACHINES, PHOTOCOPIERS AND SCANNERS
Additional information
Operating voltage | 2.5 3.0V |
Pixel Resolution | 0.3MP |
Photosensitive array | 640 x 480 |
Optical Size | 1.6 inch |
Angel of view | 67 degrees |
Maximum Frame Rate | 30fps VGA |
Sensitivity | 1.3V/(Lux-sec) |
Dormancy | Less than 20A |
Power consumption | 60mW/15fpsVGA YUV |
Temperature operation Range | -30 C ~ 70 C |
Pixel area | 3.6 x 3.6 m |
Signal to noise ratio (SNR) | 46 dB |
Dynamic range | 52 dB |
Specification
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