STMicroelectronics 19 V - 90 W adapter with PFC for laptop computers using the L6563H and L6599A EVL6599A-90WADP EVL6599A-90WADP Data Sheet
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Product codes
EVL6599A-90WADP
AN3172
Main characteristics and circuit description
Doc ID 17230 Rev 1
5/31
1
Main characteristics and circuit description
The main features of the SMPS are:
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Universal input mains range: 90
÷264 Vac - frequency 45 ÷ 65 Hz
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Output voltage: 19 V at 4.75 A continuous operation
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Mains harmonics: Acc. to EN61000-3-2 Class-D or JEITA-MITI Class-D
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Standby mains consumption: <0.3 W at 230 Vac
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Efficiency at nominal load: Better than 90 % at full load
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EMI: According to EN55022-Class-B
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Safety: According to EN60950
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Dimensions: 65x151 mm, 25 mm component maximum height
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PCB: Double side, 70 µm, FR-4, Mixed PTH/SMT
The circuit is composed of two stages; a front-end PFC using the L6563H and an LLC
resonant converter based on the L6599A.
resonant converter based on the L6599A.
The PFC stage works as the pre-regulator and powers the resonant stage with a constant
voltage of 400 V. The downstream converter operates only if the PFC is on and regulating its
output voltage. In this way, the resonant stage can be optimized for a narrow input voltage
range, improving the efficiency and the primary side power components.
voltage of 400 V. The downstream converter operates only if the PFC is on and regulating its
output voltage. In this way, the resonant stage can be optimized for a narrow input voltage
range, improving the efficiency and the primary side power components.