CC25-2405SR-E TDK Corporation, CC25-2405SR-E Datasheet - Page 24

• Manufacturer Part Number: CC25-2405SR-E
• Description: CONV DC/DC 25W SNGL 24V 5V SMD
• Manufacturer: TDK Corporation
• Type: Isolatedr

Specifications of CC25-2405SR-E

• Output: 5V
• Number Of Outputs: 1
• Power (watts): 25W
• Mounting Type: Surface Mount
• Voltage - Input: 18 ~ 36V
• Package / Case: 30-DIP Module (25 Leads)
• 1st Output: 5 VDC @ 5A
• Size / Dimension: 1.77" L x 1.70" W x 0.28" H (44.9mm x 43.2mm x 7mm)
• Power (watts) - Rated: 25W
• Operating Temperature: -40°C ~ 85°C
• Efficiency: 90%
• Approvals: CSA, cUL, EN, UL
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• 3rd Output: -
• 2nd Output: -
• 4th Output: -
• Other names: CC252405SRE; Q4487931

・All specifications are subject to change without notice.
The measured value of the converter noise may differ de-
pending on the measurement method. Measurement should
be conducted in a position close to the output terminal.
When connecting a prove, do not allow a loop to be config-
ured in order not to pick up flux.
As well, note that the spike voltage greatly differs depend-
ing on the ripple voltmeter and frequency band of the oscil-
loscope.
Our noise measurement is conducted by the wiring shown
in the figure below and in the frequency band of 50MHz.
When the distance to the input of the converter from the
input power supply is long, attach a capacitor as close as
possible to the input terminal.
When the distance to the input of the converter from the
input power supply is long, the impedance of the input line
can become high, causing high spike noise.
In this case, it is recommended to connect a capacitor as
close as possible to the input of the DC-DC converter.
CC-E
2-1. Ripple noise measurement method
2-2. Input ripple noise
This series is equipped with a built-in capacitor for input.
Therefore, this series can operate without an external
capacitor connected to input. However, by connecting a
capacitor, input ripple noise and input return noise can be
reduced.
In addition, it is more effective if a π type filter is installed
as shown in the figure below.
Iin
A
Vin
+Vin
–Vin
V
+Vout
–Vout
+Vin
–Vin
+Vin
–Vin
+Vout
–Vout
End-point: 50Ω+0.1µF
Oscilloscope
+Vout
–Vout
2. Noise reduction methods
V
10mm
Vout
50MHz
0.1µF
+Vin
–Vin
or
50Ω coaxial cable
20mm
+Vout
–Vout
1.5m
voltmeter
lout
50MHz
Ripple
A
2-3. Output ripple & noise
To reduce Output ripple & noise, connect a capacitor to
the output of the converter. In addition, reduction can be
enhanced if a π type filter is incorporated as shown in the
figure below. In this case, use of a coil with around 100µH
is recommended.
When the distance to the load from the output of the con-
verter is long, connect the capacitor as close as possible
to the load.
To reduce output spike noise, connect a ceramic capacitor
with around 1µF to the output of the converter.
2-4. Capacity of external capaci-
Note that if a capacitor with capacity over the value shown
in the table below is connected to the output, or several
capacitors with low impedance are connected in parallel,
operation of the converter may become unstable.
Model name
+Vin
–Vin
+Vin
–Vin
tor connected to output
+Vout
–Vout
+Vout
–Vout
1 F
Electrostatic capacitance (µF) max.
+Vin
–Vin
+Vout
–Vout
24