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Ericsson Microelectronics, August 2000
PKA 2000 Series - EriPower
25-40 Watt DC/DC power modules
The 25-40 watts PKA series DC/DC power modules
are designed for decentralized 24/28 V DC systems
with distributed on-board DC/DC converters. By
using thick-film technology, which provides a high
degree of integration as well as efficient thermal
management, and by using a 300 kHz switching
frequency based on proprietary drive and control
chips, these highly reliable products comply to
demanding applications within e.g. cellular radio,
medical, industrial and airborne industry.
Input to output isolation is 500 V dc on the PI
versions, while the P versions’ outputs are non-
isolated but floating, i.e. single output versions can
Efficiency 80-85%
MTBF > 2,000,000 hours at +75 °C
case temperature
Single, dual and triple outputs
No derating within –45 °C to + 85 °C
ambient and max. +115 °C case
temperature
Complete - no extra filters or
heatsinks required
be connected either positive or negative potential
related to 0 V. Mechanical ruggedness, in
conformance with IEC 68-2, is close to requirements
for discrete components. Extreme temperature
conditions can be met since the converters can
operate with full output power in ambient
temperatures ranging from – 45 to +85 °C or up to
+115 °C case temperature, making the products ideal
also for applications in environments without
temperature control.
76.0 x 76.0 x 17.8 mm (2.99 x 2.99 x 0.7 inch)
Non-
isolated
On-card
VI
VO/IO max
Isolated
O/P 1
O/P 2
O/P 3
On-card
Off-card
19–35 V dc 5V/5A
25 W
PKA 2212P PKA 2211PI
PKA2211CI
19–35 V dc 5V/8A
40 W
PKA 2411PIL
19–35 V dc 12V/2A
12V/2A
30 W
PKA 2323PI
PKA2323CI
19–35 V dc 15V/1.6A 15V/1.6A
30 W
PKA 2325PI
PKA2325CI
19–35 V dc +5V/5A
+12V/1A -12V/1A
25 W
PKA2231P PKA2231PI
PKA2231CI
19–35 V dc +5V/5A
+15V/1A -15V/0.8A
25 W
PKA2232P PKA2232PI
PKA2232CI
19–35 V dc +5V/8A
+15V/2A -15V/2A
40 W
PKA2432PIL
POmax