ME Datasheet, PDF (5/6 Pages) MTRONPTI – 14 pin DIP, 5.0 Volt, ECL, PECL, Clock Oscillator

Rev B
ME Series
5600VDC I/O Isolation
Single and Dual Outputs
5~6 Watt Medical DC/DC Converter
DESIGN & FEATURE CONSIDERATONS
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. 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. A 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 < 1.0Ω at 100KHz)
capacitor of 10μF for the 12V input models, 4.7μF for the 24V input models, and a 2.2μF for the 48V input models.
+
DC Power
Source
-
+Vin
+
DC / DC
Converter
Cin
-Vin
+Out
-Out
Load
Maximum Capacitive Load
The ME Series has a limit of connected capacitance at the output. The power module may operate in current limiting mode
during start-up, which affects the ramp-up and the startup time. Connect capacitors at the point of load for best performance.
The maximum capacitive load can be found in the “Output Voltage / Current Rating Chart” on page 2.
TEST CONFIGURATIONS
Input Reflected-Ripple Current Test Setup
Input reflected-ripple current is measured with an inductor Lin (4.7μH) and Cin (220μF, ESR < 1.0Ω at 100KHz) to simulate
source impedance.
To Oscilloscope
+Vin +Out
+
Battery
+ Lin
Cin
Current
Probe
DC / DC
Converter
-Vin -Out
Load
Capacitor Cin offsets possible battery impedance.
Current ripple is measured at the input terminals of the module. Measurement bandwidth is 0 ~ 500KHz.
Peak-to-Peak Output Noise Measurement Test
Use a Cout 0.47μF ceramic capacitor.
Scope measurement should be made by using a BNC socket; measurement bandwidth is 0 ~ 20MHz. Position the load
between 50mm and 75mm from the DC/DC Converter.
+Vin
+Out
Single Output
DC / DC
Converter
-Vin
-Out
Copper Strip
Cout
Scope
Resistive
Load
+Vin
+Out
Dual Output
DC / DC Com.
Converter
-Vin
-Out
Copper Strip
Cout
Cout
Scope
Resistive
Load
Scope
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax [phone]