Ericsson Internal
E
ESHUHAN
PRODUCT SPECIFICATION
4 (26)
Prepared (also subject responsible if other)
No.
2/1301-BMR 655 Uen
7
Technical Specification
Approved
Checked
Date
Rev
Reference
EN/LZT 146 377 R3J June 2012
PKB4000C series Direct Converters
Input 36-75 V, Output up to 60 A / 144 W
SEC/D (Betty Wu)
EZHEWNG 2009-2-18
H
© Ericsson AB
1.2 V/60 A Typical Characteristics
PKB 4718LC PI
Start-up
Shut-down
Start-up enabled by connecting VI at:
Tp1 = +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:
Tp1 = +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.).
T
p1 = +25°C, VI = 53 V,
change (15-45-15 A) at:
Tp1 =+25°C, VI = 53 V.
Bottom trace: load current (20 A/div.).
Time scale: (0.1 ms/div.).
IO = 60 A resistive load.
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
Δ%
⎝
⎠
Output Voltage Adjust Upwards, Increase:
1.2×
0.62×Δ%
(
100+Δ%
)
(
100+ 2×Δ%
)
kΩ
⎛
⎜
⎝
⎞
⎟
⎠
Radj=5.11×
−
Example: Decrease 2% =>Vout = 1.176 Vdc
Δ%
⎛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 ]
