参数资料
型号: PKU4511PIP
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 PACKAGE-8
文件页数: 5/38页
文件大小: 1098K
代理商: PKU4511PIP
Ericsson Internal
PRODUCT SPECIFICATION
4 (5)
Prepared (also subject responsible if other)
No.
EQUENXU
2/1301-BMR 602 4418/1 Uen
Approved
Checked
Date
Rev
Reference
SEC/D (ALICE SU)
EJUNGYA
2008-6-17
E
1.8 V/25 A Typical Characteristics
PKU 4418G 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
80
.
1
11
.
5
Radj
k
Example: Increase 4% =>Vout = 1.872 V
()
×
+
×
22
.
10
4
511
4
225
.
1
4
100
80
.
1
11
.
5
k = 57 k
Output Voltage Adjust Downwards, Decrease:
22
.
10
%
511
=
Radj
k
Example: Decrease 2% =>Vout = 1.764 V
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:
×
+
=
80
.
1
80
.
1
45
.
2
225
.
1
Vdesired
Vadj
V
Example: Upwards => 1.90 V
×
+
80
.
1
80
.
1
90
.
1
45
.
2
225
.
1
V = 1.36 V
Example: Downwards => 1.0 V
×
+
80
.
1
80
.
1
00
.
1
45
.
2
225
.
1
V = 0.14 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
13
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