Ericsson Internal
EYINGJI
PRODUCT SPECIFICATION
4 (5)
Prepared (also subject responsible if other)
No.
2/1301-BMR 636 01/84 Uen
37
Technical Specification
Approved
Checked
Date
Rev
EN/LZT 146 3R9e4feRre5nCce August 2012
PKB 4000 series
SEC/D (Julia You)
EXUEFYA
2008-6-6
A
© Ericsson AB
DC/DC converters, Input 36-75 V, Output 30 A/90 W
15 V/5 A Typical Characteristics
PKB 4715 PINB
Start-up
Shut-down
Start-up enabled by connecting VI at:
Top trace: output voltage (5 V/div.).
Bottom trace: input voltage (50 V/div.).
Time scale: (5 ms/div.).
Shut-down enabled by disconnecting VI at:
ref = +25°C, VI = 53 V,
O = 5 A resistive load.
Top trace: output voltage (5 V/div.).
Bottom trace: input voltage (50 V/div.).
Time scale: (0.2 ms/div.).
Tref = +25°C, VI = 53 V,
T
I
I
O = 5 A resistive load.
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 (2 V/div.).
Tref = +25°C, VI = 53 V,
O = 5 A electrical load.
change ((1.25-3.75-1.25A) at:
Bottom trace: load current (2 A/div.).
Time scale: (0.1 ms/div.).
I
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 Upwards, Increase:
5.11 ×15
(
100 + ∆%
)
511
⎛
⎝
⎞
⎠
Radj =
−
− 10.22 kΩ
⎜
⎟
1.225 × ∆%
∆%
Output Voltage Adjust Downwards, Decrease:
100
⎛
⎞
⎠
Radj = 5.11×
− 2 kΩ
⎜
⎝
⎟
∆%
Example: Increase 4% =>Vout = 15.6 Vdc
5.11×15
(
100 + 4
)
511
⎛
⎝
⎞
⎠
−
−10.22 kΩ =1488.90kΩ
⎜
⎟
1.225×4
4
Decrease 4% =>Vout = 14.4 Vdc
100
4
⎛
⎞
⎠
5.11×
− 2 kΩ = 117.5kΩ
⎜
⎝
⎟