Ericsson Internal
EMAOLII
PRODUCT SPECIFICATION
4 (5)
Prepared (also subject responsible if other)
No.
2/1301-BMR 636 02/54 Uen
34
Technical Specification
Approved
Checked
Date
Rev
Reference
EN/LZT 146 394 R5D October 2013
PKB 4000 series
DC/DC converters, Input 36-75 V, Output 30 A/90 W
SEC/D (Julia You)
EZHIXZH
2012-07-24
E
© Ericsson AB
12 V/7.5 A Typical Characteristics
PKB 4913 PINB
Start-up
Shut-down
Start-up enabled by connecting VI at:
Tref = +25°C, VI = 53 V,
IO = 7.5 A resistive load.
Top trace: output voltage 5 V/div..
Bottom trace: input voltage 50 V/div..
Time scale: 5 ms/div..
Shut-down enabled by disconnecting VI at:
Tref = +25°C, VI = 53 V,
Io =7.5A resistive load.
Top trace: output voltage 5 V/div.
Bottom trace: input voltage 50 V/div..
Time scale: 0.5 ms/div..
Output Ripple & Noise
Output Load Transient Response
Output voltage ripple at:
Tref = +25°C, VI = 53 V,
Io = 7.5 A resistive load.
Trace: output voltage 20 mV/div.
Time scale: 2 μs/div.
Output voltage response to load current step- Top trace: output voltage 500 mV/div.
change 1.875A-5.625A-1.875A at:
Tref =+25°C, VI = 53 V.
Bottom trace: load current 5 A/div).
Time scale: 0.1 ms/div..
Output Voltage Adjust (see operating information)
Passive adjust
Active adjust
The resistor value for an adjusted output voltage is calculated by using the
The output voltage may be adjusted using a {current/voltage} applied to the
following equations:
Vadj pin. This {current/voltage} is calculated by using the following equations:
Output Voltage Adjust Upwards, Increase:
Vdesired 12
Vadj 1.225 2.45
12
100 %
1.225 %
(100 2%)
12
Radj 5.11
V
%
k
Example: Upwards => 12.50 V
Example: Increase 2% =>Vout = 12.24 Vdc
12.50 12
1.225 2.45
12
100 2
1.225 2
(100 2 * 2)
12
Radj 5.11
V = 1.327 V
2
k = 2287.2 k
Example: Downwards => 11.50 V
Output Voltage Adjust Downwards, Decrease:
V = 1.123 V
11.50 12
1.225 2.45
100
12
Radj 5.11
2 k
%
Example: Decrease 4% =>Vout = 11.52Vdc
100
4
5.11
2 k 117.5k
ERICSSON [ ERICSSON ]
