E
ESHUHAN
Approved
Ericsson Internal
PRODUCT SPECIFICATION
No.
Checked
Date
4 (5)
Prepared (also subject responsible if other)
2/1301-BMR 636
Technical Specification
01/74 Uen
2008-6-4
EN/LZT 146
394 R4A Sep
2008
Rev
Reference
7
PKB
4000
Su)
SEC/D (Alice
series
DC/DC converters,
Input
36-75
V, Output
30
A/90 W
EQUENXU
A
© Ericsson Power Modules AB
1.2V/30 A Typical Characteristics
Start-up
Shut-down
PKB 4318 PIOBNB
Start-up enabled by connecting V
I
at:
T
ref
= +25°C, V
I
= 53 V,
I
O
= 30 A resistive load.
Top trace: output voltage (0.5 V/div.).
Bottom trace: input voltage (50 V/div.).
Time scale: (5 ms/div.).
Shut-down enabled by disconnecting V
I
at:
T
ref
= +25°C, V
I
= 53 V,
I
O
= 30 A resistive load.
Top trace: output voltage (0.5 V/div.).
Bottom trace: input voltage (50 V/div.).
Time scale: (0.1 ms/div.).
Output Ripple & Noise
Output Load Transient Response
Output voltage ripple at:
T
ref
= +25°C, V
I
= 53 V,
I
O
= 30 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 (200 mV/div.).
change (5.5-17.5-5.5 A) at:
Bottom trace: load current (10 A/div.).
T
ref
=+25°C, V
I
= 53 V.
Time scale: (0.1 ms/div.).
Output Voltage Adjust (see operating information)
Passive adjust
The resistor value for an adjusted output voltage is calculated by
using the following equations:
Output Voltage Adjust Upwards, Increase:
⎛
5.11
×
1.2
(
100
+ ∆
%
)
511
⎞
Radj
= ⎜
−
−
10.22
⎟
k
Ω
⎜
⎟
0.6
× ∆
%
∆
%
⎝
⎠
Output Voltage Adjust Downwards, Decrease:
⎛
100
⎞
Radj
=
5.11
× ⎜
−
2
⎟
k
Ω
⎝ ∆
%
⎠
Example: Increase 4% =>V
out
= 1.25 Vdc
⎛
5.11
×
1.2
(
100
+
4
)
511
⎞
−
−
10.22
⎟
k
Ω
= 127.7 k
Ω
⎜
⎜
⎟
0.6
×
4
4
⎝
⎠
Decrease 4% =>V
out
= 1.15 Vdc
⎛
100
⎞
5.11
× ⎜
−
2
⎟
k
Ω =
117.5k
Ω
⎝
4
⎠
ERICSSON [ ERICSSON ]
