Performance Curves
Non-Isolated
SIP Converter
3.0 - 5.5Vin 16A
14.0
12.0
10.0
Figs. 26-27
source
impedance
0.9V
1.0V
1.2V
1.5V
1.8V
2.5V
3.3V
<1
µ
H
Figs. 24-25
Figs. 28-29
I
out
(A)
8.0
6.0
4.0
2.0
0.0
0
i
S
V
SOURCE
i
C
DC/DC
Converter
10
µ
F
V
OUT
15 µF,
C*
500
1000
1500
2000
2500
3000
3500
4000
Load Capacitance (uF)
* See values for recommended external input
capacitance. Inductor optional as needed. Reduce
to <0.3µH for Cout > 1000µF, unless Cin > Cout.
ceramic
100mΩ ESR
capacitor
tantalum
capacitor
Figure 25:
Maximum Startup Load Current versus Load Capacitance.
Derate the load during startup according to this figure to avoid the pos-
sibility of over-current shutdown.
Figure 26:
Test set-up diagram showing measurement points for Input
Terminal Ripple Current (Figs 27-28), Input Reflected Ripple Current
(Figs 29-30) and Output Voltage Ripple (Figs 31-32).
0.9Vout
0.9Vout
1.0Vout
1.2Vout
1.5Vout
1.8Vout
1.8Vout
2.5Vout
2.5Vout
3.3Vout
1.0Vout
1.2Vout
1.5Vout
Figure 27:
Input Terminal Ripple Current, ic, at 15A load and
3.3V
input voltage with 1
µ
H source impedance and 200
µ
F tantalum capaci-
tor (5A/div). See Figure 26.
Figure 28:
Input Terminal Ripple Current, ic, at 15A load and
5.0V
input voltage with 1
µ
H source impedance and 200
µ
F tantalum capaci-
tor (5A/div). See Figure 26.
0.9Vout
1.0Vout
1.2Vout
1.5Vout
1.8Vout
2.5Vout
0.9Vout
1.0Vout
1.2Vout
1.5Vout
1.8Vout
2.5Vout
3.3Vout
Figure 29:
Input Reflected Ripple Current, is, through a 1
µ
H source
inductor at
3.3V
input voltage and 15A load current (100 mA/div). See
Figure 26.
Product # NQ04T33VMA16
Phone 1-888-567-9596
Figure 30:
Input Reflected Ripple Current, is, through a 1
µ
H source
inductor at
5.0V
input voltage and 15A load current (100 mA/div). See
Figure 26.
Doc.# 005-2NV4T3E Rev. B
7/6/04
Page 12
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