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PDF S220R Data sheet ( Hoja de datos )

Número de pieza S220R
Descripción Single & Dual Output DC/DC Converters
Fabricantes Minmax Technology 
Logotipo Minmax Technology Logotipo



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No Preview Available ! S220R Hoja de datos, Descripción, Manual

S200R Series
2W, Low Cost DIP, Single & Dual Output DC/DC Converters
Key Features
www.datasheet4u.com
y Low Cost
y 500VDC Isolation
y MTBF > 800,000 Hours
y 40mV P-P Ripple and Noise
y Input 5, 12, 24 and 48VDC
y Output 5, 12, 15, {12 and {15VDC
y Temperature Performance -25] to +71]
y Short Circuit Protection
y UL 94V-0 Package Material
y Internal SMD Construction
Minmax's S200R Model 2W DC/DC's are specially
designed to provide 40mA output ripple, continuous short
circuit in a low-profile 24-pin DIP package.
The series consists of 20 models with input voltages of
5V, 12V, 24V and 48VDC which offers regulated output
voltages of 5V, 12V, 15V, {12V and {15VDC.
The -25] to +71] operating temperature range makes
it ideal for data communication equipments, mobile battery
driven equipments, distributed power systems,
telecommunication equipments, mixed analog/digital
subsystems, automatic test instrumentation and industrial
robot systems.
$
Low Cost
500
VDC
I/O Isolation
Low Noise
Block Diagram
Single Output
+Vin
LC
Filter
-Vin
Bipolar
Push-Pull
Inverter
Dual Output
Positive
Regulator
+Vo
+Vin
LC
Filter
-Vin
Bipolar
Push-Pull
Inverter
-Vo
Positive
Regulator
Negative
Regulator
+Vo
Com.
-Vo
1
MINMAX
REV:0 2005/04

1 page




S220R pdf
S200R Series
Test Configurations
Input Reflected-Ripple Current Test Setup
Input reflected-ripple current is measured with a inductor
wwwL.idna(ta4s.7heueHt4) ua.ncodmCin (220uF, ESR < 1.0[ at 100 KHz) to
simulate source impedance.
Capacitor Cin, offsets possible battery impedance.
Current ripple is measured at the input terminals of the
module, measurement bandwidth is 0-500 KHz.
To Oscilloscope
+Vin +Out
+
Battery
+ Lin
Cin
Current
Probe
DC / DC
Converter
-Vin -Out
Load
In applications where power is supplied over long lines and
output loading is high, it may be necessary to use a capacitor
at the input to ensure startup.
Capacitor mounted close to the power module helps
ensure stability of the unit, it is recommended to use a good
quality low Equivalent Series Resistance (ESR < 1.0[ at 100
KHz) capacitor of a 2.2uF for the 5V input devices, a 1.0uF for
the 12V input devices and a 0.47uF for the 24V and 48V
devices.
+
DC Power
Source
-
+Vin
+ DC / DC
Converter
Cin
-Vin
+Out
-Out
Load
Peak-to-Peak Output Noise Measurement Test
Use a Cout 0.33uF ceramic capacitor.
Scope measurement should be made by using a BNC
socket, measurement bandwidth is 0-20 MHz. Position the
load between 50 mm and 75 mm from the DC/DC Converter.
+Vin
+Out
Single Output
DC / DC
Converter
-Vin -Out
Copper Strip
Cout
Scope
Resistive
Load
Output Ripple Reduction
A good quality low ESR capacitor placed as close as
practicable across the load will give the best ripple and noise
performance.
To reduce output ripple, it is recommended to use 1.5uF
capacitors at the output.
+
DC Power
Source
-
+Vin
+Out
Single Output
DC / DC
Converter
-Vin -Out
Cout
Load
+Vin
+Out
Dual Output
DC / DC Com.
Converter
-Vin -Out
Copper Strip
Cout
Cout
Scope
Resistive
Load
Scope
+
DC Power
Source
-
+Vin
+Out
Dual Output
DC / DC Com.
Converter
-Vin -Out
Cout
Load
Design & Feature Considerations
Maximum Capacitive Load
The S200R series has limitation of maximum connected
capacitance at the output.
The power module may be operated in current limiting
mode during start-up, affecting the ramp-up and the startup
time.
For optimum performance we recommend 220uF
maximum capacitive load for dual outputs and 470uF
capacitive load for single outputs.
The maximum capacitance can be found in the data sheet.
Input Source Impedance
The power module should be connected to a low
ac-impedance input source. Highly inductive source
impedances can affect the stability of the power module.
Thermal Considerations
Many conditions affect the thermal performance of the
power module, such as orientation, airflow over the module
and board spacing. To avoid exceeding the maximum
temperature rating of the components inside the power
module, the case temperature must be kept below 90°C.
The derating curves are determined from measurements
obtained in an experimental apparatus.
Position of air velocity
probe and thermocouple
15mm / 0.6in
50mm / 2in
Air Flow
DUT
5
MINMAX
REV:0 2005/04

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