cdc nca015

[ Pobierz całość w formacie PDF ]
Volant NCA015 Series
Non-Isolated 15A SIP/SMT DC/DC Converters
Features:
9
Small size, minimal footprint – SMT/SIP package
9
15A Output Current (all voltages)
9
High Efficiency: up to 96%
9
High reliability
9
RoHS Compliant
9
Cost efficient open frame design
9
Output voltage programmable by an external resistor
9
Monotonic Start with Pre-Bias
9
Over-current and Over-temperature protection
Output
Input
Efficiency
Vout
(V)
Iout
(A)
PARD
(mVp-p)
Regulation
Max
Vin
Nom.
(V)
Range
(V)
Iin
Max
(A)
Full Load
Typ. Max.
Line
Load
Typ.
1
15
28
50
+/-0.2%
+/-0.4%
5
3 –5.5
5.81
82%
1.2
15
28
50
+/-0.2%
+/-0.4%
5
3 –5.5
6.89
84%
1.5
15
28
50
+/-0.2%
+/-0.4%
5
3 –5.5
8.42
87%
1.8
15
28
50
+/-0.2%
+/-0.4%
5
3 –5.5
9.89
88%
2
15
28
50
+/-0.2%
+/-0.4%
5
3 –5.5
10.86
89%
2.5
15
28
50
+/-0.2%
+/-0.4%
5
3 –5.5
11.5
92%
3.3
15
28
50
+/-0.2%
+/-0.4%
5
4.5-5.5
11.45
94%
Technical enquiries email: sales@murata-ps.com, tel: +508 339 3000
1 NCA015_6200820000_B01_21/04/08
 Volant NCA015 Seri
es
Non-Isolated 15A SIP/SMT DC/DC Converters
Murata Power Solutions
Input Characteristics
Notes & Conditions
Min
Typ.
Max
Units
Input Voltage Operating Range
3.0
5
5.5
Vdc
Input Reflected Ripple Current
100
mA p-p
A
2
s
Inrush Current Transient
0.4
Input Filter Type (external)
100
μ
F
Input Turn ON Threshold
2.8
V
Input Turn OFF Threshold
2.7
V
ON Control
Open or 0 to +0.4V
OFF Control
+2.8V to Vin (<3mA)
Output Characteristics
Notes & Conditions
Min
Typ.
Max
Units
Vout Accuracy
50% load
-1.5
+1.5
%
Output Loading
0
15
A
Output Ripple & Noise
@ 20Mhz Bandwidth.
30
mV
Maximum Capacitive Load
Low ESR
8000
μ
F
Vout Trim Range (Nom)
0.9
3.3
V
Total Accuracy
Over line/load temperature
<3%
Current Limit
19.5
23
27
A
Output Line Regulation
-0.2
+0.2
%
Output Load Regulation
-0.5
+0.5
%
Turn-on Overshoot
1
%
SC Protection Technique
Hiccup with auto recovery
Pre-bias Start-up at output
Unit starts monotonically with pre-
bias
Dynamic Characteristics
Notes & Conditions
Min
Typ.
Max
Units
Load Transient
100
mV
50% step, 2.5A/
μ
s
Settling Time
100
μ
s
Frequency
300khz
Start-Up Time
Vin to Vout and On/Off to Vout
Vout rise to monotonic
<20
ms
General Specifications
Notes & Conditions
Min
Typ.
Max
Units
x10
6
Hrs
MTBF
Calculated (MIL-HDBK-217F)
1.4
x10
6
Hrs
Demonstrated @ 90% Confidence
Level
1
Thermal Protection
Hotspot
110
120
°C
Operating Temperature
Without derating
-40
60
°C
Dimensions
2”Lx0.34”Wx0.5”H
(50.8x8.64x12.7mm)
Pin Dimensions
0.03” (0.76mm)
Pin Material
Round copper with tin-lead plated over
nickel underplate
Weight
0.3 ounces (8.5g)
Flammability Rating
UL94V-0
Standards Compliance
CSA C22.2, No.60950/UL 60950, Third Edition (2000), File UL E165113
2
NCA015_6200820000_B01_21/04/08
 Volant NCA015 Series
Non-Isolated 15A SIP/SMT DC/DC Converters
Murata Power Solutions
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 110oC. 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 2-15 .
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
NCA015_6200820000_B01_21/04/08
Volant NCA015 Seri
es
Non-Isolated 15A SIP/SMT DC/DC Converters
Murata Power Solutions
TYPICAL DERATING CURVES SIP/SMT VERSION
NCA0151330S (5Vi, 3.3Vo) Derating Curve
16
14
12
10
0 LFM
100 LFM
200 LFM
8
6
4
2
0
0 0 7 0 0 0 0 0 0 0
Ambient Temperature (C)
Fig. 2. SMT Power Derating vs Output Current for 5Vin 3.3V Out.
NCA0151330B (5Vi, 3.3Vo) Derating Curve
16
14
12
10
0 LFM
100 LFM
200 LFM
8
6
4
2
0
0 0 9 0 0 3 0 0 0 0
Ambient Temperature (C)
Fig. 3. SIP Power Derating vs Output Current for 5Vin 3.3V Out.
4
NCA015_6200820000_B01_21/04/08
 Volant NCA015 Seri
es
Non-Isolated 15A SIP/SMT DC/DC Converters
Murata Power Solutions
NCA0151330S (5Vi, 2.5Vo) Derating Curve
16
14
12
10
0 LFM
100 LFM
200 LFM
8
6
4
2
0
0 0 8 0 0 0 0 0 0 0
Ambient Temperature (C)
Fig 4. SMT Power Derating vs Output Current for 5Vin 2.5V Out.
NCA0151330B (5Vi, 2.5Vo) Derating Curve
16
14
12
10
0 LFM
100 LFM
200 LFM
8
6
4
2
0
0 0 0 0 0 0 0 0 0 0
Ambient Temperature (C)
Fig 5. SIP Power Derating vs Output Current for 5Vin 2.5V Out.
5
NCA015_6200820000_B01_21/04/08
  [ Pobierz całość w formacie PDF ]