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参数资料
| 型号： | PKU4511SI |
| 厂商： | ERICSSON POWER MODULES AB |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 50 W DC-DC REG PWR SUPPLY MODULE |
| 封装： | ROHS COMPLIANT, SMD-8 |
| 文件页数： | 2/38页 |
| 文件大小： | 1098K |
| 代理商： | PKU4511SI |
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Ericsson Internal
PRODUCT SPECIFICATION
4 (5)
Prepared (also subject responsible if other)
No.
EQUENXU
2/1301-BMR 602 4318/2 Uen
Approved
Checked
Date
Rev
Reference
SEC/D (ALICE SU )
EJUNGYA
2008-6-17
E
1.5 V/25 A Typical Characteristics
PKU 4318H PI
Start-up
Shut-down
Start-up enabled by connecting V
I at:
Tref = +25°C, VI = 53 V,
IO = 25 A resistive load.
Top trace: output voltage ( 0.5 V/div.).
Bottom trace: input voltage ( 20 V/div.).
Time scale: ( 5 ms/div.).
Shut-down enabled by disconnecting V
I at:
Tref = +25°C, VI = 53 V,
IO = 25 A resistive load.
Top trace: output voltage ( 0.5 V/div.).
Bottom trace: input voltage ( 50 V/div.).
Time scale: ( 0.2 ms/div.).
Output Ripple & Noise
Output Load Transient Response
Output voltage ripple at:
Tref = +25°C, VI = 53 V,
IO = 25 A resistive load.
Trace: output voltage ( 20 mV/div.).
Time scale: ( 2 s/div.).
Output voltage response to load current step-
change (6.25 - 18.75 - 6.25 A) at:
Tref =+25°C, VI = 53 V.
Top trace: output voltage ( 200 mV/div.).
Bottom trace: load current ( 10 A/div.).
Time scale: ( 0.1 ms/div.).
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:
()
×
+
×
=
22
.
10
%
511
%
225
.
1
%
100
50
.
1
11
.
5
Radj
k
Example: Increase 4% =>Vout = 1.56 Vdc
(
)
×
+
×
22
.
10
4
511
4
225
.
1
4
100
50
.
1
11
.
5
k = 24.7 k
Output Voltage Adjust Downwards, Decrease:
22
.
10
%
511
=
Radj
k
Example: Decrease 2% =>Vout = 1.47 Vdc
22
.
10
2
511
k = 245 k
Active adjust
The output voltage may be adjusted using a voltage applied to the
Vadj pin. This voltage is calculated by using the following equation:
×
+
=
50
.
1
50
.
1
45
.
2
225
.
1
Vdesired
Vadj
V
Example: Upwards => 1.60 V
×
+
50
.
1
50
.
1
60
.
1
45
.
2
225
.
1
V = 1.39 V
Example: Downwards => 1.0 V
×
+
50
.
1
50
.
1
00
.
1
45
.
2
225
.
1
V = 0.41 V
E
PKU 4000 Series
DC/DC converters, Input 36-75 V, Output 25 A/50 W
EN/LZT 146 308 R4B July 2008
Ericsson Power Modules AB
Technical Specication
10
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