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NCP1608
BOOST DESIGN EQUATIONS Components are identified in Figure 1 (Continued)
Output Voltage UVP
Detection
V out(UVP) + V UVP @ R out1 @
R out2 ) R FB
R out2 @ R FB
) 1
V UVP is shown in the specification
table.
Inductor rms Current
I L(RMS) +
2 @ P out
3 @ Vac @ h
Output Diode rms
Current
3
I D(RMS) + 4 @
2 @ 2
p
@
P out
h @ Vac @ V out
I M(RMS) + 2 @
MOSFET rms Current
3
P out
h @ Vac
@
1 *
2 @ 8 @ Vac
3 @ p @ V out
Current Sense Resistor
R sense +
V ILIM
I L(peak)
V ILIM is shown in the specification
table.
P R
sense
+ I M(RMS) 2 @ R sense
Type 1 Compensation
C COMP +
gm
2 @ p @ f CROSS
Where f CROSS is the crossover fre-
quency and is typically less than
20 Hz. gm is shown in the specifica-
tion table.
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