PKB4204BPI Ericsson Power Modules, PKB4204BPI Datasheet - Page 16

• Manufacturer Part Number: PKB4204BPI
• Description: DC/DC Converters & Regulators 240W 36-75Vin/12Vout 1/8-BRICK
• Manufacturer: Ericsson Power Modules
• Series: PKB-Br

Specifications of PKB4204BPI

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Thermal Consideration
General
The products are designed to operate in different thermal
environments and sufficient cooling must be provided to
ensure reliable operation.
For products mounted on a PCB without a heat sink attached
cooling is achieved mainly by conduction, from the pins to the
host board, and convection, which is dependant on the airflow
across the product. Increased airflow enhances the cooling of
the converter.
The Output Current Derating graph found in the Output section
for each model provides the available output current vs.
ambient air temperature and air velocity at V
The product is tested on a 254 x 254 mm,
35 µm (1 oz), 16-layer test board mounted vertically in a wind
tunnel with a cross-section of 305 x 305 mm.
Proper cooling of the DC/DC converter can be verified by
measuring the temperature at positions P1, P2, P3, P4 and
P5. The temperature at these positions should not exceed the
max values provided in the table below. The number of points
may vary with different thermal design and topology.
See Design Note 019 for detailed information.
E
Position
P1
P2
P3
P5
P6
P7
Prepared (also subject responsible if other)
MICMALE
Approved
SEC/D Betty Wu
PKB 4000B series Intermediate Bus Converters
Input 36-75 V, Output up to 40 A / 252 W
Open frame
Description
Reference point (
Transistor
Optocoupler
Reference point (
Transistor
Base plate
T
T
ref
ref
)
)
in
= 53 V.
Max value
125 ºC
125 ºC
100 ºC
125 ºC
125 ºC
105 ºC
Checked
(EZHEWNG) 2009-12-16
Ericsson Internal
PRODUCT SPECIFICATION
No.
3/1301-BMR 658 Uen
Date
Base plate
Technical Specification
EN/LZT 146 384 R3C January 2010
© Ericsson AB
Rev
PB3
Reference
3 (5)
16