PKM4319EPI Ericsson Power Modules, PKM4319EPI Datasheet - Page 31

• Manufacturer Part Number: PKM4319EPI
• Description: Module DC-DC 1-OUT 2.5V 15A 37.5W 8-Pin Quarter-Brick
• Manufacturer: Ericsson Power Modules
• Type: Step Downr
• Series: PKM-Er

Specifications of PKM4319EPI

• Package: 8Quarter-Brick
• Output Current: 15 A
• Output Voltage: 2.5 V
• Input Voltage: 36 to 75 V
• Number Of Outputs: 1
• Output Power: 37.5 W
• Product: Isolated
• Input Voltage Range: 36 V to 75 V
• Output Voltage (channel 1): 1.5 V
• Output Current (channel 1): 20 A
• Isolation Voltage: 1.5 KV
• Package / Case Size: Quarter Brick
• Output Type: Isolated
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Start-Up
PKM 1E PI Typical Characteristics
Output Ripple
PKM 4000E PI Datasheet
Output Voltage Adjust
The resistor value for an adjusted output voltage is
calculated by using the following equations:
Output Voltage Adjust Upwards, Increase:
R
Output Voltage Adjust Downwards, Decrease:
R
Eg Increase 4% =>V
5 .11 [15(100+4)/(1 .225x4)-(100+2x4)/4]=1488 .9 kOhm
Eg Decrease 2% =>V
5 .11 x(100/2-2)=245 .3 kOhm
adj
adj
= 5 .11 [15(100+Δ%) / 1 .225Δ%- (100+2Δ%) /Δ% ] kOhm
= 5 .11 [(100 / Δ%-2) ] kOhm
Output voltage ripple (50mV/div .) at T
Io=3 .33 A resistive load with C=10 µF tantalum and 0 .1 µF
ceramic capacitors . Band width=20MHz . Time scale: 1µs / div .
Start-up at Io=3 .33 A resistive load at T
Vin=53 V . Start enabled by connecting Vin . Top trace:
input voltage (10 V/div .) . Bottom trace: output voltage
(5 V/div .) . Time scale: 5 ms/div .
out
out
= 15 .6 V
= 14 .7 V
dc
dc
Pcb
=+25 °C, Vin=53 V,
Pcb
=+25 °C,
1
Transient
Output Voltage Adjust
Turn-Off
100000
[
kOhm
10000
1000
100
10
1
]
Turn-off at Io=3 .33 A resistive load at T
Vin=53 V . Turn-off enabled by disconnecting Vin . Top
trace: output voltage (5 V/div .) . Bottom trace: input
voltage (20 V/div .) . Time scale: 10 ms/div .
Output voltage response to load current step-change
(0 .82-2 .50-0 .82 A) at T
trace: output voltage (200mV/div .) . Bottom trace:
load current (1 A/div .) Time scale: 0 .1 ms/div .
0
Output voltage adjust resistor value vs .
percentage change in output voltage .
2
EN/LZT 146 051 R7A © Ericsson Power Modules, February 2007
4
Pcb
=+25 °C, Vin=53 V . Top
6
8
Decrease
Increase
Pcb
10
=+25 °C,
12
[
%
]