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  • The EVL6566B-65W-QR is a demonstration board tailored on specification of a typical hi-end portable computer power supply. The peculiarities of this design are the very high average efficiency of about 90% without synchronous rectification and very low no load consumption of 100mW at 230 Vac. The result is that this converter is compliant to energy star eligibility criteria. The flyback stage implements the new ST dedicated current mode controller L6566B, operating in quasi-resonant mode and detecting the transformer demagnetization by pin ZCD.

    The resistor on pin OSC sets the maximum switching frequency at about 165 kHz.
    Because the maximum switching frequency is imposed, the converter operates in discontinuous conduction mode during light load operation. The L6566B valley skipping function is capable to turn-on the MOSFET in valley switching even in DCM, thus reducing switching losses.
    The Power MOSFET is a standard 800 V, STF7NM80, housed in TO-220FP package, needing just a small heat sink. The transformer is layer type, using a standard ferrite size EER28L, designed according to the EN60950.
    The flyback reflected voltage is ~150 V, providing enough room for the leakage inductance voltage spike with good margin for the reliability of the MOSFET.
    The output rectifiers are two, dual centre tap Schottky diode in parallel, STPS20H100CFP, housed in TO-220FP. They have been selected according to the maximum reverse voltage, forward voltage drop and power dissipation. The snubber damps the oscillation produced by the diode capacitance and the leakage inductance.
    A small LC filter has been added on the output, filtering the high frequency ripple and spikes.
    Thanks to the L6566B valley skipping feature it has been possible to dimension the power transformer parameters optimizing efficiency at different loads achieving an outstanding result even without synchronous rectification.

    主要特性

    • Universal input mains range: 90 264 Vac - frequency 45 ÷ 65Hz
    • Output voltage: 19 V @ 3.42 A continuous operation
    • Mains harmonics: according to EN61000-3-2 Class-D or JEITA-MITI Class-D
    • Stand-by mains consumption: <100 mW @ 230 Vac
    • Average efficiency: better than 89% without synchronous rectification
    • EMI: according to EN55022-Class-B
    • Safety: according to EN60950
    • Dimensions: 58x121 mm, 25 mm components maximum height
    • PCB: single side, 35 μm, CEM-1, mixed PTH/SMT

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质量与可靠性

产品型号 Marketing Status 封装 等级规格 符合RoHS级别 WEEE Compliant 材料声明**
EVL6566B-65W-QR
批量生产
CARD 工业 Ecopack1 -

EVL6566B-65W-QR

Package:

CARD

Material Declaration**:

Marketing Status

批量生产

Package

CARD

Grade

Industrial

RoHS Compliance Grade

Ecopack1

(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此,它们可能不是100%适用于特定的设备。有关特定设备的信息,请联系 销售支持

样片和购买

产品型号
从分销商订购
从ST订购
核心产品
供货状态
供应商
ECCN (US)
ECCN (EU)
Country of Origin
Board production status
Budgetary Price (US$)*/Qty
EVL6566B-65W-QR Available at 3 distributors

...的经销商可用性EVL6566B-65W-QR

代理商名称
地区 库存 最小订购量 第三方链接
MOUSER WORLDWIDE 5 1 马上订购
Farnell Element14 EUROPE 2 1 马上订购
ANGLIA Live EUROPE 1 1 马上订购

代理商库存报告日期: 2020-10-26

代理商名称

MOUSER

库存

5

Min.Order

1

地区

WORLDWIDE 马上订购

Farnell Element14

库存

2

Min.Order

1

地区

EUROPE 马上订购

ANGLIA Live

库存

1

Min.Order

1

地区

EUROPE 马上订购

代理商库存报告日期: 2020-10-26

Buy Direct L6566BH
批量生产
- EAR99 NEC ITALY -

EVL6566B-65W-QR

核心产品

L6566BH

供货状态

批量生产

Budgetary Price (US$)*/Qty

...的经销商可用性EVL6566B-65W-QR

代理商名称
地区 库存 最小订购量 第三方链接
MOUSER WORLDWIDE 5 1 马上订购
Farnell Element14 EUROPE 2 1 马上订购
ANGLIA Live EUROPE 1 1 马上订购

代理商库存报告日期: 2020-10-26

代理商名称

MOUSER

库存

5

Min.Order

1

地区

WORLDWIDE 马上订购

Farnell Element14

库存

2

Min.Order

1

地区

EUROPE 马上订购

ANGLIA Live

库存

1

Min.Order

1

地区

EUROPE 马上订购

代理商库存报告日期: 2020-10-26

供应商

-

ECCN (US)

EAR99

ECCN (EU)

NEC

Budgetary Price (US$)* / Qty

Country of Origin

ITALY

Board production status

-

(*) 建议转售单价(美元)仅用于预算用途。如需以当地货币计价的报价,请联系您当地的 ST销售办事处 或我们的 经销商