D-NXT-2W

D-NXT-2W Series
2W, FIXED INPUT, ISOLATED & UNREGULATED TWIN OUTPUT ULTRAMINIATURE SMD PACKAGE DC-DC CONVERTER
SELECTION GUID
GUIDE
E
Input
Model Number
Voltage(VDC)
Nominal
D050909NXT-2W
FEATURES
D051212NXT-2W
Efficiency up to 85%
◆
D051515NXT-2W
Twin Independent Output
◆
D120505NXT-2W
Input Current(mA)(typ.)
@Max.
@Max.
5/5
200/200
20/20
478
32
50
100
82
5(4.5-5.5)
9/9
112/112
12/12
482
48
42
100
83
5(4.5-5.5)
12/12
84/84
9/9
483
55
32
100
84
5(4.5-5.5)
15/15
67/67
7/7
470
29
27
100
85
12(10.8-13.2)
5/5
200/200
20/20
199
19
25
100
82
12(10.8-13.2)
9/9
112/112
12/12
200
20
27
100
83
12(10.8-13.2)
12/12
84/84
9/9
198
18
24
100
84
12(10.8-13.2)
15/15
67/67
7/7
196
18
25
100
85
Max.
Units
D121212NXT-2W
No Heatsink Required
D121515NXT-2W
1KVDC Isolation
Note: The D_NXT-1W series also are available in our company.
◆
(%, typ.)
Load(µF)
5(4.5-5.5)
Load
SMD Package Styles
◆
Efficiency
Capacitive
Min.
D120909NXT-2W
◆
Max.
Ripple
Current
Max.
Small Footprint
◆
Reflected
(VDC)
(Range)
D050505NXT-2W
Output Current (mA)
Output
Voltage
@No Load
(mA,typ.)
Load
High Power Density
◆
Temperature Range: -40℃~ +85℃
◆
No External Component Required
◆
Internal SMD construction
◆
◆
RoHS Compliance
INPUT SPECIFICATIONS
MODEL SELECTION
①
②
③
④ ⑤ ⑥
⑦
⑧
D 05 05 05 N X T -2W
Item
Test Conditions
Min.
Typ.
Input Surge Voltage (1sec. max.)
5VDC Input Models
-0.7
--
9
VDC
Input Surge Voltage (1sec. max.)
12VDC Input Models
-0.7
--
18
VDC
Max.
Units
2
W
Input Filter
C Filter
①Product Series
②Input Voltage
③The 1st Output Voltage ④The 2nd Output Voltage
⑤No Pin
⑥Fixed Input
⑦SMD Package
⑧Rated Power
APPLICATIONS
The D_NXT-2W series are specially designed for
applications where a group of polar power supplies are
isolated from the input power supply in a distributed
power supply system on a circuit board. These products
apply to:
1)Where the voltage of the input power supply is fixed
(voltage variation ≤10%);
2)Where isolation is necessary between input and
output (isolation voltage ≤1000VDC);
3)Where the regulation of the output voltage and the
output ripple and noise are not demanding.
Such as:purely digital circuits,ordinary low frequency
analog circuits and IGBT power device driven circuits,
etc.
ISOLATION SPECIFICATIONS
Item
Test Conditions
Output Power
Min.
0.2
Output Voltage Accuracy
Typ.
--
See tolerance envelope graph
Line Regulation
For Vin change of ±1%
--
--
±1.2
%
Load Regulation
10% to 100% load (5V output)
--
12.8
15
%
Load Regulation
10% to 100% load (9V output)
--
8.3
10
%
Load Regulation
10% to 100% load (12V output)
--
6.8
10
%
Load Regulation
10% to 100% load (15V output)
--
6.0
10
%
Temperature Drift
100% full load
--
--
±0.03
%/℃
Ripple & Noise*
20MHz Bandwidth
--
75
150
mVp-p
--
--
1
S
Short Circuit Protection**
Note: *Test ripple and noise by“Parallel cable”method. See detailed operation instructions at Testing of Power
Converter section, application notes.
MICRODC RESERVES THE COPYRIGHT
http://www.microdc.cn
**Supply voltage must be discontinued at the end of short circuit duration.
Technical Enquiries-Email:[email protected] Tel:0086-20-86000646
Page 1 of 4
D-NXT-2W Series
COMMON SPECIFICATIONS
Item
Isolation Voltage(Vin/Vout)
Isolation Voltage(Vo1/Vo2)
Isolation Resistance(Vin/Vout)
Isolation Resistance(Vo1/Vo2)
Isolation Capacitance(Vin/Vout)
Isolation Capacitance(Vo1/Vo2)
Test Conditions
Tested for 1 minute and leakage current less
than 1 mA
Test at 500VDC
Input/Output,100KHz/1V
Min.
Typ.
Max.
1000
--
--
1000
--
--
1000
--
--
1000
--
--
--
60
--
--
60
--
Units
VDC
MΩ
pF
Switching Frequency
Full load, nominal input
--
100
--
KHz
MTBF
[email protected]
3500
--
--
K hours
--
2.1
Case Material
Epoxy Resin (UL94-V0)
Weight
--
g
ENVIRONMENTAL SPECIFICATIONS
Item
Test Conditions
Storage Humidity
Operating Temperature
Power derating (above 85℃)
Min.
Typ.
Max.
Units
--
--
95
%
-40
--
85
℃
Storage Temperature
-55
--
125
℃
Temp. rise at full load
--
25
--
℃
--
300
℃
Lead Temperature
1.5mm from case for 10 seconds
--
Cooling
Free air convection
EMC SPECIFICATIONS
EMI
CE
CISPR22/EN55022
CLASS A
EMS
ESD
IEC/EN61000-4-2
Contact
External Circuit Refer to Figure1
±8KV
perf. Criteria B
EMC RECOMMENDED CIRCUIT
EMI Recommended External Circuit
(LASS A):
PRODUCT TYPICAL CURVE
http://www.microdc.cn
Technical Enquiries-Email:[email protected] Tel:0086-20-86000646
Page 2 of 4
D-NXT-2W Series
OUTLINE DIMENSIONS ECOMMENDED FOOTPRINT & PACKAGING
MECHANICAL DIMENSIONS
RECOMMENDED FOOTPRINT
REEL PACKING OUTLINE DIMENSIONS
TUBE OUTLINE DIMENSIONS
TEST CONFIGURATIONS
Input Reflected-Ripple Current Test Setup
Input reflected-ripple current is measured with an inductor Lin and Capacitor Cin to simulate source impedance.
Lin(4.7µH)
http://www.microdc.cn
Cin(220µF, ESR < 1.0Ωat 100 KHz)
Technical Enquiries-Email:[email protected] Tel:0086-20-86000646
Page 3 of 4
D-NXT-2W Series
DESIGN CONSIDERATIONS
1) Requirement on output load
To ensure this module can operate efficiently and reliably, During operation, the minimum output load could not be less than 10% of the full load.If the
actual output power is very small, please connect a resistor with proper resistance at the output end in parallel to increase the load, or use our company products with a lower rated output power (D-NXT-2W).
2) Overload Protection
Under normal operating conditions, the output circuit of these products has no protection against overload. The simplest method is to connect a
self-recovery fuse in series at the input end or add a circuit breaker to the circuit.
Input Fuse Selection Guide
3) Recommended circuit
If you want to further decrease the input/output ripple , a capacitor filtering network may be connected to the input and output ends of the DC/DC
converter, see (Figure 2).
It should also be noted that the capacitance of filter capacitor must be proper. If the capacitance is too big, a startup problem might arise. For every
channel of output, provided the safe and reliable operation is ensured, the recommended capacitance of its filter capacitor sees (Table 1).
It's not recommended to connect any external capacitor in the application field with less than 0.5 watt output.
4) Output Voltage Regulation and Over-voltage Protection Circuit
The simplest device for output voltage regulation, over-voltage and over-current protection is a linear regulator and an capacitor filtering network with
overheat protection that is connected to the input or output end in series (Figure 3), the recommended capacitance of its filter capacitor sees (Table 1), linear
regulator based on the actual voltage and current to required.
5) Cannot use in parallel and hot swap
Note:
1. Operation under minimum load will not damage the converter; However, they may not meet all specification listed.
2. Max. Capacitive Load tested at nominal input voltage, full load and constant resistive load.
3. All specifications measured at Ta=25℃, humidity<75%, nominal input voltage and rated output load unless otherwise specified.
4. In this datasheet, all the test methods of indications are based on our corporate standards.
5. All characteristics are for listed model only, non-standard models may perform differently, please contact our technical person for more detail.
6. Contact us for your specific requirement.
7. Specifications subject to change without prior notice.
RoHS COMPLIANT INFORMATION
This series is compatible with RoHS soldering systems with a peak wave solder temperature
of 300°C for 10 seconds.
The pin termination finish on the SIP package type is Tin Plate, Hot Dipped over Matte Tin
with Nickel Preplate. The DIP types are Matte Tin over Nickel Preplate. Both types in this
series are backward compatible with Sn/Pb soldering systems.
Microdc Professional Power Module,Inc.
Tel:0086-20-86000646
REACH COMPLIANT INFORMATION
E-mail:[email protected]
Website:http://www.microdc.cn
http://www.microdc.cn
This series has proven that this product does not contain harmful chemicals, it also has
harmful chemical substances through the registration, inspection and approval.
Technical Enquiries-Email:[email protected] Tel:0086-20-86000646
Page 4 of 4
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