F9221L
Features
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1. High efficiency (a reduction in SMPS size is possible.)
DC/DC
: 92.3%(DC input:400V,output:16V)
PFC+DC/DC :87.0%(AC100V),89.5%(AC200V)
2. Built in stand-by mode (An auxiliary power supply is unnecessary.) Pin<0.4W at Pout=0.0W Pin<1.0W at Pout=0.5W Pin<4.0W at Pout=2.0W
3. Low noise (a reduction in the noise suppression parts is possible.) MOSFETs Turn-on : ZVS+ZCS Turn-off : ZVS Diodes(secondary side) Surge voltage does not occur at reverse recovery.
4. Fail-safety (Built in protection functions:OC,SC,OV,Tj(OH))
5. Easy design power supply (Reduction of design time)
Down size your SMPS
MT5F11478c July.25.2002
.irantk.ir rectification circuit or PFC
Circuit configuration
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Multi-oscillated current resonant type power supply
Self-oscillation circuit Cr
IQ2
VD1,ID1
Tr
VQ2 VP1
Vo
IQ1
VG2
Ed
VQ1
VD2,ID2
VG1 V
Normal / Stand-by signal
Q1 ------ PWM oscillation Q2 ------ self-oscillation (driven by...
