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参数资料
| 型号： | PKR4928ASI |
| 厂商： | ERICSSON POWER MODULES AB |
| 元件分类： | 电源模块 |
| 英文描述： | 2-OUTPUT 9.5 W DC-DC REG PWR SUPPLY MODULE |
| 封装： | ROHS COMPLIANT, SMD-18 |
| 文件页数： | 8/30页 |
| 文件大小： | 1444K |
| 代理商： | PKR4928ASI |
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Ericsson Internal
PRODUCT SPECIFICATION
13 (17)
Prepared (also subject responsible if other)
No.
ESKEVIN
2/1301-BMR 640 1411+ Uen
Approved
Checked
Date
Rev
Reference
SEC/D (Julia You)
EZYPING
2007-8-27
F
+3.3V, 2.1A / +5.0V, 0.5A / 9.5W Dual, Typical Characteristics
PKR 4928A SI
Start-up
Shut-down
Start-up enabled by connecting VI at:
Tref = +25°C, VI = 53 V,
IO1 = 2.1 A, IO2 = 0.5 A resistive load.
Bottom trace: output voltage 2 (5.0 V/div.).
Mid trace: output voltage 1 (2.0 V/div.).
Top trace: input voltage (20 V/div.).
Time scale: (2 ms/div.).
Shut-down enabled by disconnecting VI at:
Tref = +25°C, VI = 53 V,
IO1 = 2.1 A, IO2 = 0.5 A resistive load.
Bottom trace: output voltage 2 (5.0 V/div.).
Mid trace: output voltage 1 (2.0 V/div.).
Top trace: input voltage (20 V/div.).
Time scale: (2 ms/div.).
Output Ripple & Noise
Output Load Transient Response
Output voltage ripple at:
Tref = +25°C, VI = 53 V,
IO1 = 2.1 A, IO2 = 0.5 A resistive load.
Top trace: output voltage 1 (10 mV/div.).
Bottom trace: output voltage 2 (20 mV/div.).
Time scale: (1 s/div.).
Output voltage response to load current step-change,
output 1 (0.525-1.575-0.525 A) at:
Tref =+25°C, VI = 53 V IO2 = 0.5 A.
Top trace: output voltage 2 (100 mV/div.).
Bottom trace: load current output 1(1.0 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:
To adjust the output voltage upwards, a resistor is connected between pins 8 and 17.
Pins 8 and 9 have to be shorted. The output voltage increases when the resistance
decreases. The resistance value is given by the equation:
Rou= 4.21 x (4.31 – Vo) / ( Vo - Voi) k
Ω
To adjust the output voltage downwards, a resistor is connected between pins 8 and
9. The output voltage decreases when the resistance increases. The resistance
value is given by the equation:
Rod= 13.18 x ( Voi – Vo) / (Vo –1.45) k
Ω
Vo is the desired output voltage and Vi is the initial output voltage.
E
PKR 4000A PI
DC/DC Converters, Input 36-75 V, 3 A / 15 W
EN/LZT 146 300 R5F April 2009
Ericsson AB
Technical Specication
16
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