Ericsson Internal
PRODUCT SPECIFICATION
4 (5)
Prepared (also subject responsible if other)
No.
EMAOLII
Approved
31
Checked
Date
Re
2/1301-BMR 636 0T1/54 Uen
v
echnicReal Sncepecification
fere
SEC/D (Julia You)
ESHNMAA
2013-08-20
C
EN/LZT 146 394 R5D October 2013
PKB 4000 series
© Ericsson AB
DC/DC converters, Input 36-75 V, Output 30 A/90 W
12 V/6 A Typical Characteristics
PKB 4713 PINB
Start-up
Shut-down
Start-up enabled by connecting VI at:
Top trace: output voltage (5 V/div.).
Bottom trace: input voltage (20 V/div.).
Time scale: (10 ms/div.).
Shut-down enabled by disconnecting VI at:
ref = +25°C, VI = 53 V,
O = 6 A resistive load.
Top trace: output voltage (5 V/div.).
Bottom trace: input voltage (50 V/div.).
Time scale: (0.5 ms/div.).
T
ref = +25°C, VI = 53 V,
O = 6 A resistive load.
T
I
I
Output Ripple & Noise
Output Load Transient Response
Output voltage ripple at:
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.).
T
ref = +25°C, VI = 53 V,
O = 6 A resistive load.
change (1.5-4.5-1.5 A) at:
Tref =+25°C, VI = 53 V.
Bottom trace: load current (2 A/div.).
Time scale: (0.1 ms/div.).
I
Output Voltage Adjust (see operating information)
Passive adjust
Active adjust
The resistor value for an adjusted output voltage is calculated by using the
following equations:
The output voltage may be adjusted using a {current/voltage} applied to the
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 => 12.50 V
11.50 12 V = 1.123 V
1.225 2.45
Output Voltage Adjust Downwards, Decrease:
12
100
Radj 5.11
2 k
%
Example: Decrease 4% =>Vout = 11.52Vdc
100
4
5.11
2 k 117.5k
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