3575FE Просмотр технического описания (PDF) - Linear Technology

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3575FE

Isolated Flyback Converter without an Opto-Coupler

Linear Technology 

APPLICATIONS INFORMATION

LS

CR

CLAMP EITHER

D

ZENER OR RC

3575 F04

Figure 4. Snubber Clamping

VSW

< 60V

< 55V

< 50V

LT3575

tOFF > 350ns

tSP < 150ns

TIME

3575 F05

Figure 5. Maximum Voltages for SW Pin Flyback Waveform

10V/DIV

10V/DIV

100ns/DIV

3575 F06

Figure 6. Good Snubber Diode Limits SW Pin Voltage

100ns/DIV

3575 F07

Figure 7. Bad Snubber Diode Does Not Limit SW Pin Voltage

3575f

13

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