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NEWS & TECH

SUBJECT

TIME

3 Quality Levels Of Switching Adaptor Factory

2013-07-16

Switching Power Adapter Manufacturer

2013-06-20

Hongkong Electronics Fair And CFS

2013-04-12

New Office Address

2013-04-08

Brasil New Rule For Customs Clearance

2013-03-15

The NEW ETL/CETL Certificates

2013-02-04

KRECO's Agent in South Africa

2012-11-02

Switching Power Supply Topologies

2012-08-15

Power Classification Fine Solution.

2012-01-06

Several switching power supply topology circuit

2011-07-06

Our Industrial Design

2011-05-19

The Essence Of Self-excitation Circuit

2010-12-05

High-frequency Switching Power Supply Disturbances - How To ...

2010-08-13

Switching Power Supply Ramp Compensation

2009-09-16

Switching Power Supply Design, X Cap And Y Cap

2008-12-18

Switching power supply capacitor when the design problem is the need to pay attention, and in the switching power supply capacitor design. Y series X series capacitor and capacitor design Is very important. For each of these two series capacitors design criteria, to explain to everyone here. X capacitor switching power supply design guidelines: Reference AD1118 X capacitor placement guidelines: 1 Common Mode Chokes ago: 105/275VAC (MKP/X2) 2. Common mode choke after: 474/275VAC (MKP/X2) Reference MW SP 200-12 X capacitor placement guidelines: 1. Common mode choke coil former: 1uF/275VAC (MKP/X2) 2. Common mode choke after: 0.33uF/275VA C (MKP/X2) Reference MW S145-12 X capacitor placement guidelines: 1 Common Mode Chokes ago: 0.22uF/MKP-X2-250VAC/275VAC (GS-L) (2) Common Mode Choke after: 0.1uF/MKP-X2-250VAC/275VAC (GS-L) Usually two X capacitors, before a use 0.47uF, the second stage with a 0.1uF; single stage is used 0.47uF. Currently no convenient method of calculating. (Electric The size and volume capacity of the power supply has no direct relationship) Y capacitor switching power supply design guidelines: Earth = PGND (or CHGND) Reference AD1118 Y capacitor placement guidelines: 1 mains input L / N line to the earth: (2 472/250V Y2) (2) electricity through a common mode choke the earth after two lines: (2 472/250V) 3 low-side output rectifier bridge (primary of the transformer low voltage side) to the earth: (a 222/250V) 4.6 group of low-voltage DC output 88V1 on earth: (each a 103/1KV Y1) 5.6 sets of low output auxiliary power AGND (low voltage transformer secondary side) of the earth: (sharing a 103/1KV Y1) 6 primary of the transformer low voltage side of the transformer secondary low-voltage side: (sharing a 103/1kV Y1) Reference AD1043 design: 1 mains input L / N line to the earth: (2 222/250V Y2) (2) electricity through a common mode choke the earth after two lines: (2 472/250V Y2) Kang special reference to electronic design: 1 mains input L / N line to the earth: (2 102/250V Y2) (2) electricity through two common mode choke the earth after two lines: (2 102/250V Y2) 3 low-side output rectifier bridge (primary of the transformer low voltage side) to the earth: (a 332/250V Y2) 4.12V low voltage DC output to the earth: (1 223/1KV DISC Y1) 5 primary of the transformer low voltage side of the transformer secondary low-voltage side: (222/250V Y1) Reference MW S-145-12 Design: 1 electricity through a common mode choke the earth after two lines: (2 222/2kV Y1) (2) low-voltage rectifier bridge output terminal (primary of the transformer low voltage side) to the earth: (1 222/2kV Y1) 3.12V low voltage DC output GND on earth: (1 103/1KV Y1) Reference MW S-200-12 Design: 1 mains input L / N line to the earth: (two 472/250V Y2 is not on) (2) electricity through a common mode choke the earth after two lines: (2 472/250V Y2) 3 low-side output rectifier bridge (primary of the transformer low voltage side) to the earth: (a 222/250V Y2) 4.PFC output high side of the transformer primary ground: (1 103/2kV Y1) 5.12V low voltage DC output to the earth: (1 103/1KV Y1) 6.12V low voltage DC output GND on earth: (1 203/1KV Y1) According to the above description, Y capacitor design rules are as follows: (can be appropriately selected) 1 mains input L / N line to the earth: (2 222/250V Y2) (2) electricity through a common mode choke the earth after two lines: (2 222/250V Y2) 3 low-side output rectifier bridge (primary of the transformer low voltage side) to the earth: (a 222/250V Y2) 4 primary of the transformer low voltage side of the transformer secondary low-voltage side: (Shared a 103/1kV Y1) 4 DC output on the low pressure side of the earth: (1 103/1KV) 6. Voltage output side GND to the earth: (1 103/1KV)

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