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estudio y análisis de soluciones topológicas de convertidores cc - cc ...

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Anexo II<br />

PÉRDIDAS EN SEMICONDUCTORES MODO ELEVADOR<br />

IRFIB7N50A C oos := 97pF<br />

t r := 35⋅<br />

10 − 9 s<br />

:= Q gs := 32⋅<br />

10 − 9 C<br />

t f := 28⋅<br />

10 − 9 s<br />

R on 1.8⋅( 0.52Ω )<br />

Puente M1 - M4<br />

STP20NM60 C oos := 50pF<br />

t r := 20⋅<br />

10 − 9 s<br />

:= Q gs := 39⋅<br />

10 − 9 C<br />

t f := 11⋅<br />

10 − 9 s<br />

R on 1.8⋅( 0.25Ω )<br />

MOS paralelo mos := 1 V gs := 15V V DS := Vc fs = 1 × 10 5 Hz<br />

Datos <strong>de</strong>l MOSFET<br />

SPA11N60C3 C oos := 40pF<br />

t r := 5⋅10 − 9 s<br />

:= Q gs := 45⋅<br />

10 − 9 C<br />

R on 1.8⋅( 0.34Ω )<br />

t f := 5⋅10 − 9 s<br />

Condu<strong>cc</strong>ión<br />

R on<br />

Pon M<br />

mos I 2<br />

:= ⋅ Cc1ef Pon M = 0.922W Pon M ⋅4<br />

= 3.687W<br />

mos<br />

Capacidad Parásita<br />

2<br />

P Coos := ⋅C 2 oos ⋅V DS ⋅fs<br />

P Coos = 0.32W P Coos ⋅4<br />

= 1.28W<br />

Carga <strong>de</strong> Puerta Pgs := mos⋅Q gs ⋅V gs ⋅fs<br />

Pgs = 0.068W Pgs⋅4<br />

= 0.27W<br />

Conmutación<br />

⎛<br />

1 I 2 ( d⋅T)<br />

Psw on ⋅<br />

2 V 1<br />

:= DS⋅⎜<br />

⋅t n1 r ⋅fs<br />

Psw off := ⋅<br />

2 V DS⋅<br />

⎝<br />

⎞ ⎟⎠<br />

Psw on = 0.356W<br />

Psw off = 0.154W<br />

⎛<br />

⎜<br />

⎝<br />

I 2 ( T)<br />

n1<br />

⎞<br />

⎟<br />

⎠<br />

⋅t f ⋅fs<br />

Psw := Psw on + Psw off Psw = 0.51W Psw⋅4<br />

= 2.041W<br />

P TM14 := Pon M ⋅4<br />

+ Pgs⋅4<br />

+ P Coos ⋅4<br />

+ Psw⋅4<br />

TOTALES M1-M4<br />

P TM14 = 7.278W<br />

281

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