PKR2113APIA Ericsson Power Modules, PKR2113APIA Datasheet - Page 19

• Manufacturer Part Number: PKR2113APIA
• Description: Module DC-DC 1-OUT 12V 1A 12W 18-Pin
• Manufacturer: Ericsson Power Modules
• Type: Step Downr

Specifications of PKR2113APIA

• Output Current: 1 A
• Output Voltage: 12 V
• Input Voltage: 18 to 36 V
• Number Of Outputs: 1
• Output Power: 12 W

Operating information continued
Parallel Operation
Paralleling of several converters is easily accomplished by
direct connection of the output voltage terminal pins. The
load regulation characteristic is specifically designed for
optimal paralleling performance. Load sharing between
converters will be within ±10%. It is recommended not to
exceed
P
converter output power and n is the number of paralleled
converters, to prevent overloading any of the converters and
thereby decreasing the reliability performance.
Over Temperature Protection (OTP)
The PKR 2000A Series DC/DC converters include an internal
over temperature shutdown circuit.
When the temperature exceeds 130°C - 150°C on the control
circuit the converter will shut down. The DC/DC converter will
make continuous attempts to start up (non-latching mode)
and resume normal operation automatically when the
temperature has dropped >15°C below the temperature
threshold.
Over Current Protection (OCP)
The converters include current limiting circuitry for protection
at continuous overload.
The output voltage will decrease towards zero for output
currents in excess of max output current (max I
converter will resume normal operation after removal of the
overload. The load distribution should be designed for the
maximum output short circuit current specified.
Synchronization
It is possible to synchronize the switching frequency to an
external symmetrical clock signal. The input can be driven by
a TTL-compatible output and reference to the -input pin 18.
Prepared (also subject responsible if other)
ESKEVIN
Approved
SEC/D (Julia You)
PKR 2000A series
DC/DC converters, Input 18-36 V, Output up to 2 A/15 W
O
Characteristic
High level
Threshold level*)
Low level
Sink current
Sync. Frequency
*) Rise time < 10ns
= n x 0.9 x P
O
max, where P
Min
520
2.2
1.2
0
O
max is the maximum
Typ
1.7
Max
668
6.5
2.2
0.4
1.5
O
). The
Checked
EZYPING
Unit
kHz
mA
V
V
V
See Design Note 019 for further information.
Thermal Consideration
General
The converters are designed to operate in different thermal
environments and sufficient cooling must be provided to
ensure reliable operation.
Cooling is achieved mainly by conduction, from the pins to
the PCB board, and convection, which is dependant on the
airflow across the converter. 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 converter is tested on a 254 x 254 mm,
35 μm (1 oz), 8-layer test board mounted vertically in a wind
tunnel with a cross-section of 305 x 305 mm.
Proper cooling of the converter can be verified by measuring
the temperature at position P1. The temperature at these
positions should not exceed the max values provided in the
table below.
Note that the max value is the absolute maximum rating
(non destruction) and that the electrical Output data is
guaranteed up to T
PRODUCT SPECIFICATION
No.
3/1301-BMR 640 1211+ Uen
Date
2007-8-20
Position
P
P
P
1
2
3
Device
Transformer
Mosfet
PCB
Technical Specifi cation
EN/LZT 146 352 R2C September 2007
© Ericsson Power Modules AB
Rev
B
ref
+95°C.
Designation
T
P
ref
1
Reference
max value
110º C
in
Air Flow
= 27 V.
3 (5)
19