
Ericsson Internal
PRODUCT SPEC.
1 (5)
Prepared (also subject responsible if other)
No.
SEC/D KEVIN YAN
3/1301-BMR 651 8 Uen
Approved
Checked
Date
Rev
Reference
SEC/D Wei Zhang A
2006-3-6
PA1
EMC Specification
Conducted EMI measured according to test set-up.
The fundamental switching frequency is 1050 kHz for PMM
8218T @ VI = 12 V, max IO.
Conducted EMI Input terminal value (typ)
TBD
EMI without filter
TBD
Test set-up
Layout recommendation
The radiated EMI performance of the POL regulator will
depend on the PCB layout and ground layer design.
It is also important to consider the stand-off of the POL
regulator.
If a ground layer is used, it should be connected to the output
of the POL regulator and the equipment ground or chassis.
A ground layer will increase the stray capacitance in the PCB
and improve the high frequency EMC performance.
Output ripple and noise
Output ripple and noise measured according to figure below.
See Design Note 022 for detailed information.
Output ripple and noise test setup
Operating information
Extended information for POLA products is found in
Application Note POLA(AN205).
Input Voltage
The input voltage range 8.0 to 14.0Vdc makes the product
easy to use in intermediate bus applications when powered
by a regulated 12V bus converter. The PMM product family is
also available with 3.3 or 5.0 V
in.
Turn on/off Input Voltage
The POL regulators monitor the input voltage and will turn on
and turn off at predetermined levels.
The typical hysteresis between turn on and turn off input
voltage is 1V.
Inhibit Control (INH)
The products are equipped with a
Inhibit control function referenced
to the primary negative input
connection (- In), positive logic. The
INHIBIT function allows the
regulator to be turned on/off by an
external device like a
semiconductor or mechanical
switch.
The regulator will turn on when the input voltage is applied
with the INHIBIT pin open. Turn off is achieved by connecting
the INHIBIT pin to the - In. To ensure safe turn off, the voltage
difference between INHIBIT pin and the - In pin shall be less
than 0.5V. The regulator will restart automatically when this
connection is opened.
E
PMM 8000 series
POL regulator, Input 8-14 V, Output 50 A/275 W
EN/LZT 146 339 R1A April 2006
Ericsson Power Modules AB
Technical Specication
E
PMM 8000 series
POL regulator, Input 8-14 V, Output 50 A/275 W
EN/LZT 146 339 R1A April 2006
Ericsson Power Modules AB
Technical Specication
E
PMM 8000 series
POL regulator, Input 8-14 V, Output 50 A/275 W
EN/LZT 146 339 R1A April 2006
Ericsson Power Modules AB
Technical Specication
26