Ericsson Internal
E
EGUHAIL
PRODUCT SPECIFICATION
4 (26)
Prepared (also subject responsible if other)
No.
2/1301-BMR 655 Uen
7
Technical Specification
Approved
Checked
Date
Rev
EN/LZT 146 3R7e7feRre3nGce
Oct 2008
PKB4000C PI
SEC/D (Julia You)
ESKEVIN
2008-9-23
F
© Ericsson Power Modules AB
DC/DC converters, Input 36-75 V, Output 60A/144W
1.2 V/60 A Typical Characteristics
PKB 4718LC PI
Start-up
Shut-down
Start-up enabled by connecting VI at:
Tref = +25°C, VI = 53 V,
IO = 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 VI at:
Tref = +25°C, VI = 53 V,
IO =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:
Trace: output voltage (20mV/div.).
Time scale: (2 µs/div.).
Output voltage response to load current step- Top trace: output voltage (200mV/div.).
Tref = +25°C, VI = 53 V,
change (15-45-15 A) at:
Bottom trace: load current (20 A/div.).
Time scale: (0.1 ms/div.).
IO = 60 A resistive load.
Tref =+25°C, VI = 53 V.
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 Downwards, Decrease:
⎛100
⎞
Radj=5.11×
− 2
⎜
⎜
⎟
⎟
kΩ
∆%
⎝
⎠
Output Voltage Adjust Upwards, Increase:
1.2×
0.62×∆%
(
100+∆%
)
(
100+ 2×∆%
)
kΩ
⎛
⎜
⎝
⎞
⎟
⎠
Radj=5.11×
−
Example: Decrease 2% =>Vout = 1.176 Vdc
∆%
⎛ 100
5.11× ⎜
⎞
− 2⎟
kΩ = 245 kΩ
⎜
⎟
Example: Increase 4% =>Vout = 1.248 Vdc
2
⎝
⎠
1.2×
(
100+ 4
)
(
100+ 2×4
)
⎛
⎞
⎠
kΩ = 119 kΩ
5.11×
−
⎜
⎟
0.62×4
4
⎝
ERICSSON [ ERICSSON ]
