NMH2412DC Murata Power Solutions Inc, NMH2412DC Datasheet - Page 4

• Manufacturer Part Number: NMH2412DC
• Description: CONV DC/DC 2W 24VIN 12V DIP DL
• Manufacturer: Murata Power Solutions Inc
• Series: NMHr
• Type: Isolatedr

Specifications of NMH2412DC

• Number Of Outputs: 2
• Output: ±12V
• Power (watts): 2W
• Mounting Type: Through Hole
• Voltage - Input: 21.6 ~ 26.4V
• Package / Case: 14-DIP Module (300 mil, 6 Leads)
• 1st Output: 12 VDC @ 83mA
• 2nd Output: -12 VDC @ 83mA
• Size / Dimension: 0.77" L x 0.39" W x 0.30" H (19.6mm x 9.9mm x 7.6mm)
• Power (watts) - Rated: 2W
• Operating Temperature: -40°C ~ 85°C
• Efficiency: 86%
• Approvals: UL
• Output Power: 2 W
• Input Voltage Range: 21.6 V to 26.4 V
• Input Voltage (nominal): 24 V
• Output Voltage (channel 1): +/- 12 V
• Output Current (channel 1): +/- 83 mA
• Output Voltage (channel 2): +/- 12 V
• Output Current (channel 2): +/- 83 mA
• Isolation Voltage: 1 KV
• Package / Case Size: DIP
• Output Voltage: +/- 12 V
• Product: Isolated
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• 3rd Output: -
• 4th Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 811-1524-5

APPLICATION NOTES (continued)
OUTPUT RIPPLE REDUCTION
www.murata-ps.com
By using the values of inductance and capacitance stated, the output ripple at the rated load is lowered to 5mV p-p max.
Component selection
Capacitor: Ceramic chip capacitors are recommended. It is required that the ESR (Equivalent Series Resistance) should be as low as possible, X7R types are recommended.
The voltage rating should be at least twice (except for 15V output), the rated output voltage of the DC/DC converter.
Inductor: The rated current of the inductor should not be less than that of the output of the DC/DC converter. At the rated current, the DC resistance of the inductor should be
such that the voltage drop across the inductor is <2% of the rated voltage of the DC/DC converter. The SRF (Self Resonant Frequency) should be >20MHz.
Ripple & Noise Characterisation Method
Ripple and noise measurements are performed with the following test confi guration.
Differential Mode Noise Test Schematic
C1
C2
C3
R1
R2
T1
RLOAD
Measured values are multiplied by 10 to obtain the specifi ed values.
NMH0505XC
NMH0509XC
NMH0512XC
NMH0515XC
NMH1205XC
NMH1209XC
NMH1212XC
NMH1215XC
NMH2405XC
NMH2409XC
NMH2412XC
NMH2415XC
NMH4805XC
NMH4809XC
NMH4812XC
NMH4815XC
Order Code
1μF X7R m ultilayer ceramic capacitor, voltage rating to be a minimum of 3 times the output voltage of the DC/DC converter
10μF tantalum capacitor, voltage rating to be a minimum of 1.5 times the output voltage of the DC/DC converter with an ESR of less
than 100mΩ at 100 kHz
100nF multilayer ceramic capacitor, general purpose
450Ω resistor, carbon fi lm, ±1% tolerance
50Ω BNC termination
3T of the coax cable through a ferrite toroid
Resistive load to the maximum power rating of the DC/DC converter. Connections should be made via twisted wires
L (μH)
150
100
150
100
150
100
150
100
47
47
47
47
47
47
47
47
SUPPLY
82473C
82473C
82154C
82104C
82473C
82473C
82154C
82104C
82473C
82473C
82154C
82104C
82473C
82473C
82154C
82104C
SMD
Inductor Order Codes
DC/DC Converter
Input
+
-
Output
+
-
Through Hole
11R473C
11R473C
11R154C
11R104C
11R473C
11R473C
11R154C
11R104C
11R473C
11R473C
11R154C
11R104C
11R473C
11R473C
11R154C
11R104C
C1 C2 C3
R LOAD
R1
C (μF)
4.7
2.2
3.3
3.3
4.7
2.2
3.3
3.3
4.7
2.2
3.3
3.3
4.7
2.2
3.3
3.3
T1
Technical enquiries email: [e-mail], tel: [phone]
Product specifi cation for MPS inductors can be found at:
2200R Series (Through Hole)
http://www.murata-ps.com/data/magnetics/kmp_2200r.pdf
8200 Series (SMD)
http://www.murata-ps.com/data/magnetics/kmp_8200c.pdf
R2
Isolated 2W Dual Output DC/DC Converters
OSCILLOSCOPE
Y INPUT
2010-07-09 KDC_NMH.E01 Page 4 of 5
NMH Series