Ericsson Internal
EZYPING
PRODUCT SPECIFICATION
4 (5)
Prepared (also subject responsible if other)
No.
2/1301-BMR 636 01/34 Uen
28
Technical Specification
Approved
Checked
Date
Rev
Reference
EN/LZT 146 394 R5D October 2013
PKB 4000 series
DC/DC converters, Input 36-75 V, Output 30 A/90 W
SEC/D (Betty Wu)
ESECZHW
2009-2-9
B
© Ericsson AB
5.0 V/15 A Typical Characteristics
PKB4711 PINB
Start-up
Shut-down
Start-up enabled by connecting VI at:
Tref = +25°C, VI = 53 V,
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:
Tref = +25°C, VI = 53 V,
IO = 15 A resistive load.
Top trace: output voltage (2 V/div.).
Bottom trace: input voltage (50 V/div.).
Time scale: (0.2 ms/div.).
I
O = 15 A resistive load.
Output Ripple & Noise
Output Load Transient Response
Output voltage ripple at:
Tref = +25°C, VI = 53 V,
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.).
change (3.75-11.25-3.75 A) at:
Tref =+25°C, VI = 53 V.
Bottom trace: load current (10 A/div.).
Time scale: (0.1 ms/div.).
I
O = 15 A resistive load.
Output Voltage Adjust (see operating information)
Passive adjust
Active adjust
The resistor value for an adjusted output voltage is calculated by using
the following equations:
The output voltage may be adjusted using a {current/voltage} applied to the
Vadj pin. This {current/voltage} is calculated by using the following equations:
Output Voltage Adjust Upwards, Increase:
Vdesired − 5
⎛
⎝
⎞
⎟
V
V
adj = 1.225 + 2.45×
⎜
V ⋅(100+ Δ%)
⎛
100+ 2⋅Δ%⎞
kΩ
o
5
Radj = 5.11*⎜
−
⎟
⎠
1.225⋅Δ%
Δ%
⎝
⎠
Example: Upwards => 5.1 V
Example: Increase 4% =>Vout = 5.2 Vdc
5.1− 5
⎛
⎞
⎟
V = 1.274 V
5.0
(
100 + 4
)
100 + 2 × 4
⎛
⎜
⎞
1.225 + 2.45×
⎜
⎝
kΩ = 404.3 kΩ
5.11*
−
⎟
⎠
5
⎠
1.225 × 4
4
⎝
Example: Downwards => 4.9 V
Output Voltage Adjust Downwards, Decrease:
V = 1.176 V
4.9 − 5
⎛
⎞
100
1.225 + 2.45×
⎛
⎞
⎜
⎟
Radj = 5.11×
− 2 kΩ
⎜
⎝
⎟
5
⎝
⎠
Δ%
⎠
Example: Decrease 4% =>Vout = 4.8Vdc
100
4
⎛
⎞
⎠
5.11×
− 2 kΩ = 117.5kΩ
⎜
⎝
⎟
ERICSSON [ ERICSSON ]
