Datasheet > LNK362P/G/D

LNK362P/G/D

更新时间： 2024-02-04 13:12:45

品牌	Logo	应用领域
FERYSTER		开关
页数	文件大小	规格书
16页	770K
描述
Energy Effi cient, Low Power Off-Line Switcher IC

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技术参数
数据手册

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LNK362P/G/D 技术参数

是否Rohs认证：	符合	生命周期：	Active
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	1.74
Is Samacsys：	N	模拟集成电路 - 其他类型：	SWITCHING REGULATOR
峰值回流温度（摄氏度）：	NOT SPECIFIED	处于峰值回流温度下的最长时间：	NOT SPECIFIED
Base Number Matches：	1

LNK362P/G/D 数据手册

LNK362-364

Input Filter

Capacitor

TOP VIEW

Y1-

Capacitor

HV DC

INPUT

C_BP

Opto-

coupler

OUT

Maximize hatched copper

areas (

) for optimum

heatsinking

Output Filter

Capacitor

PI-4155-102705

Figure 6. Recommended Printed Circuit Layout for LinkSwitch-XT using P Package in a Flyback Converter Conﬁguration.

Bypass Capacitor C_BP

good heat sinking of LinkSwitch-XT. The same applies to the

TheBYPASSpincapacitorshouldbelocatedasnearaspossible

to the BYPASS and SOURCE pins.

cathode of the output diode.

Y-Capacitor

Primary Loop Area

The placement of the Y-type cap should be directly from the

primary input ﬁlter capacitor positive terminal to the common/

return terminal of the transformer secondary. Such a placement

will route high magnitude common-mode surge currents away

fromtheLinkSwitch-XTdevice. Notethatifaninputpi(C, L, C)

EMIﬁlterisused, thentheinductorintheﬁltershouldbeplaced

between the negative terminals of the input ﬁlter capacitors.

The area of the primary loop that connects the input ﬁlter

capacitor, transformer primary and LinkSwitch-XT together

should be kept as small as possible.

Primary Clamp Circuit

A clamp is used to limit peak voltage on the DRAIN pin at

turn-off. This can be achieved by using an RCD clamp or a

Zener (~200 V) and diode clamp across the primary winding.

In all cases, to minimize EMI, care should be taken to minimize

the circuit path from the clamp components to the transformer

and LinkSwitch-XT.

Optocoupler

Place the optocoupler physically close to the LinkSwitch-XT to

minimize the primary-side trace lengths. Keep the high current,

high-voltage drain and clamp traces away from the optocoupler

to prevent noise pick up.

Thermal Considerations

The copper area underneath the LinkSwitch-XT acts not only

as a single point ground, but also as a heatsink. As this area is

connected to the quiet source node, it should be maximized for

Output Diode

For best performance, the area of the loop connecting the

secondary winding, the output diode and the output ﬁlter

2-6

Rev. D 02/07

1...3 4 567 8 9...16

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