E
EGUHAIL
Approved
Ericsson Internal
PRODUCT SPECIFICATION
No.
Checked
Date
4 (26)
Prepared (also subject responsible if other)
2/1301-BMR 655
Technical Specification
Uen
2008-9-23
EN/LZT 146
377
R3G
Rev
Reference
7
PKB4000C PI
SEC/D (Julia You)
DC/DC converters, Input
36-75
V, Output
60A/144W
ESKEVIN
F
Oct
2008
© Ericsson Power Modules AB
1.2 V/60 A Typical Characteristics
Start-up
Shut-down
PKB 4718LC PI
Start-up enabled by connecting V
I
at:
T
ref
= +25°C, V
I
= 53 V,
I
O
= 60 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: (50 us/div.).
Output Ripple & Noise
Output Load Transient Response
Output voltage ripple at:
T
ref
= +25°C, V
I
= 53 V,
I
O
= 60 A resistive load.
Trace: output voltage (20mV/div.).
Time scale: (2 µs/div.).
Output voltage response to load current step- Top trace: output voltage (200mV/div.).
change (15-45-15 A) at:
Bottom trace: load current (20 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:
⎛
1.2
×
(
100
+ ∆
%
) (
100
+
2
× ∆
%
)
⎞
kΩ
Radj
=
5.11
× ⎜
−
⎟
∆
%
⎝
0.62
× ∆
%
⎠
Example: Increase 4% =>V
out
= 1.248 Vdc
⎛
1.2
×
(
100
+
4
) (
100
+
2
×
4
)
⎞
kΩ = 119 kΩ
5.11
× ⎜
−
⎟
4
⎝
0.62
×
4
⎠
Output Voltage Adjust Downwards, Decrease:
⎛
100
⎞
Radj
=
5.11
× ⎜
⎟
⎜ ∆
%
−
2
⎟
kΩ
⎠
⎝
Example: Decrease 2% =>V
out
= 1.176 Vdc
⎞
⎛
100
5.11
× ⎜
⎟
⎜
2
−
2
⎟
kΩ = 245 kΩ
⎠
⎝
ERICSSON [ ERICSSON ]
