Non-Isolated 20A SIP/SMT DC/DC Converters
VOLANT NFA020 Series
Features:
Small size, minimal footprint – SMT/SIP package
20A Output Current (all voltages)
High Efficiency: up to 95%
High reliability
RoHS Compliant
Output voltage programmable by an external resistor.
Monotonic Startup with Pre-Bias
+’ve Enable Logic and –‘ve Enable Logic models available
Optional Power Good Signal
Sequencing / Tracking Feature
Output
Vout
(V)
0.75
1.2
1.5
1.8
2.0
2.5
3.3
5.0
Iout
(A)
20
20
20
20
20
20
20
20
PARD
(mVp-p)
Typ.
50
50
50
50
50
50
50
50
Max.
75
75
75
75
75
75
75
75
Regulation
Max
Line
+/-0.2%
+/-0.2%
+/-0.2%
+/-0.2%
+/-0.2%
+/-0.2%
+/-0.2%
+/-0.2%
Load
+/-0.5%
+/-0.5%
+/-0.5%
+/-0.5%
+/-0.5%
+/-0.5%
+/-0.5%
+/-0.5%
Input
Vin
Nom.
(V)
12
12
12
12
12
12
12
12
Efficiency
Range
(V)
Iin
Typ
(A)
1.299
1.928
2.326
2.727
2.996
3.704
4.783
7.092
Full Load
Typ.
77%
83%
86%
88%
89%
90%
92%
94%
6.0 – 14
6.0 – 14
6.0 – 14
6.0 – 14
6.0 – 14
6.0 – 14
6.0 – 14
6.5 – 14
1
NFA020_6200760000_B04_21/04/08
Murata Power Solutions
Non-Isolated 20A SIP/SMT DC/DC Converters
VOLANT NFA020 Series
Input Characteristics
Input Voltage Operating Range
Input Reflected Ripple Current
Inrush Current Transient
Input Filter Type (external)
Input Turn ON Threshold
Input Turn OFF Threshold
Enable
(Positive enable has 20K pullup)
(Negative enable has no internal
pullup resistor)
Notes & Conditions
Minimum 6.5 V input @ 5 volts output
Min
6.0
Typ.
12
200
100
5
3.9
open
<0.4
<0.4
Max
14
0.2
Units
Vdc
mA p-p
A
2
s
μF
V
V
Vdc
Vdc
Positive enable: ON
Positive enable: OFF
Negative enable: ON;
open circuit or
Negative enable: OFF
Notes & Conditions
100% load
2
Min
-1.5
0
Typ.
Vin
Max
+1.5
20
75
8000
5.0
<2%
28
Units
%
A
mVp-p
μF
V
A
%
%
%
Output Characteristics
Vout Accuracy
Output Loading
Output Ripple & Noise
@ 20Mhz Bandwidth.
Maximum Capacitive Load
Vout Trim Range (Nom)
Total Accuracy
Current Limit
Output Line Regulation
Output Load Regulation
Turn-on Overshoot
SC Protection Technique
Pre-bias Start-up at output
Power Good Signal: Vout
Low ESR
0.75
Over line/load temperature
-0.2
-0.5
Hiccup with auto recovery
Unit starts monotonically with pre-
bias
Active: no load (
470K internal pull-up
)
Out of regulation:
Notes & Conditions
50% step, 0.1A/μs
Settling Time
10% Vo to 90% Vo
Vin to Vout and On/Off to Vout
Notes & Conditions
Calculated (MIL-HDBK-217F)
Hotspot
Without derating 300LFM
See Power derating curve
2.4”Lx0.327”Wx0.510”H
(50.8x8.3x13.0mm)
1.30”Lx0.53”Wx0.366”H
(33x13.46x9.3mm)
0.025” (0.64mm) SQUARE
0.063” x0.065” x 0.112”
SQUARE
Matte Sn Finish on component
Leads
UL94V-0
Min
+0.2
+0.5
1
3.9
4.2
0.3
Typ.
4.5
0.5
Max
100
200
V
V
Units
mV
μs
KHz
ms
ms
Units
kHrs
°C
°C
°C
Dynamic Characteristics
Load Transient
Frequency
Rise Time
Start-Up Time
General Specifications
MTBF
Thermal Protection
Operating Temperature
Operating Ambient Temperature
SIP Dimensions
SMT Dimensions
SIP Pin Dimensions
SMT Block Dimensions
Pin and Block Material
Flammability Rating
Min
300
3.5
7
Typ.
891
110
Max
-40
-40
50
85
0.64
mm
2
NFA020_6200760000_B04_21/04/08
Murata Power Solutions
Non-Isolated 20A SIP/SMT DC/DC Converters
VOLANT NFA020 Series
Standards Compliance
CSA C22.2, No.60950/UL 60950, Third Edition (2000), File UL E165113
Thermal Considerations
The power module operates in a variety of thermal environments; however, sufficient cooling should
be provided to help ensure reliable operation of the unit.
The thermal data presented is based on measurements taken at various airflows. Note that airflow is
parallel to the long axis of the module as shown in Figure 1 and derating applies accordingly.
Figure 1. Thermal Tests Set-Up.
The temperature at either location should not exceed 110°C. Over-temperature shutdown is
evaluated at these locations. The output power of the module should not exceed the rated power for
the module(Vo,set X Io,max).
Convection Requirements for Cooling
To predict the approximate cooling needed for the module, refer to the Power Derating Curves in
Figures 2-17 .
These derating curve are approximations of the ambient temperature and airflow required to keep the
power module temperature below it's maximum rating. Once the module is assembled in the actual
system, the module's temperature should be verified.
3
NFA020_6200760000_B04_21/04/08
Murata Power Solutions
Non-Isolated 20A SIP/SMT DC/DC Converters
VOLANT NFA020 Series
TYPICAL DERATING CURVES SIP/SMT VERSION
NFA020 SMT Derating Curve V1.0 Vout=0.75V
NFA020 SMT Derating Curve Vout=0.75V
25
Output Current (A)
20
1
5
1
0
5
0
30
40
50
60
70
Ambient Temperature(
o
C)
80
90
0LFM
1
00LFM
200LFM
300LFM
400LFM
Fig. 2. SMT Derating of Output Current for 12Vin 0.75V Out.
NFA020 SIP Derating Curve V1.0
Vout=0.75V
NFA020 SIP Derating Curve
Vout=0.75V
25
Output Current (A)
20
1
5
1
0
5
0
30
0LFM
1
00LFM
200LFM
300LFM
400LFM
40
50
60
70
80
90
A mbient T emperature (C )
Fig. 3. SIP Derating of Output Current for 12Vin 0.75V Out.
4
NFA020_6200760000_B04_21/04/08
Murata Power Solutions
Non-Isolated 20A SIP/SMT DC/DC Converters
VOLANT NFA020 Series
NFA020 SMT Derating Curve Vout=1.2V
NFA020 SMT Derating Curve V1.0 Vout=1.2V
25
Output Current (A)
20
1
5
1
0
5
0
30
40
50
60
70
80
90
Ambient Temperature(
o
C)
0LFM
1
00LFM
200LFM
300LFM
400LFM
Fig 4. SMT Derating of Output Current for 12Vin 1.2V Out.
NFA020 SIP Derating Curve V1.0 Vout=1.2V
NFA020 SIP Derating Curve Vout=1.2V
25
Output Current (A)
20
1
5
1
0
5
0
30
0LFM
1
00LFM
200LFM
300LFM
400LFM
40
50
60
70
80
90
A mbient T emperature (C )
Fig 5. SIP Derating of Output Current for 12Vin 1.2V Out.
5
NFA020_6200760000_B04_21/04/08
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