Ericsson Confidential
EXUEFYA
PRODUCT SPECIFICATION
4 (5)
Prepared (also subject responsible if other)
No.
2/1301-BMR 636 01/24 Uen
16
Technical Specification
Approved
Checked
Date
Rev
EN/LZT 146 3R9e4feRre4nAceSep 2008
PKB 4000 series
SEC/D (Julia You)
ECHWANG 2008-5-21
A
© Ericsson Power Modules AB
DC/DC converters, Input 36-75 V, Output 30 A/90 W
2.5 V/25 A Typical Characteristics
PKB4619 PINB
Start-up
Shut-down
Start-up enabled by connecting VI at:
Top trace: output voltage (2 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,
IO = 25 A resistive load.
Top trace: output voltage (2 V/div.).
Bottom trace: input voltage (50 V/div.).
Time scale: (0.2 ms/div.).
Tref = +25°C, VI = 53 V,
T
IO = 25 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 (200 mV/div.).
T
ref = +25°C, VI = 53 V,
O = 25 A resistive load.
change (6.25-18.75-6.25 A) at:
Bottom trace: load current (10 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× 2.5
(
100 + ∆%
)
511
kΩ
⎛
⎝
⎞
⎟
Radj =
−
−10.22
⎜
1.225 × ∆%
∆%
⎠
Example: Increase 10% =>Vout =2.75 Vdc
5.11×2.5
(
100 +10
)
511
kΩ = 53.39 kΩ
⎛
⎞
−
−10.22
⎜
⎟
1.225×10
10
⎝
⎠
Output Voltage Adjust Downwards, Decrease:
100
kΩ
⎛
⎝
⎞
⎠
Radj = 5.11
− 2
⎜
⎟
∆%
Example: Decrease 20% =>Vout =2.00 Vdc
100
20
kΩ = 15.33 kΩ
⎛
⎝
⎞
⎠
5.11
− 2
⎜
⎟
ERICSSON [ ERICSSON ]
