參數(shù)資料
型號: PQ48050QNA20NKS
廠商: SYNQOR INC
元件分類: 電源模塊
英文描述: 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
封裝: QUARTER BRICK PACKAGE-8
文件頁數(shù): 10/13頁
文件大?。?/td> 716K
代理商: PQ48050QNA20NKS
Product # PQ48050QNA20
Phone 1-888-567-9596
Doc.# 005-2QN450D_B
9/5/01
Page 6
Performance Curves
48Vin 5.0Vout 20A
Quarter
Brick
Figure 13: Test set-up diagram showing measurement points for Input
Terminal Ripple Current (Figure 14), Input Reflected Ripple Current
(Figure 15) and Output Voltage Ripple (Figure 16).
Figure 14: Input Terminal Ripple Current, ic, at full rated output current
and nominal input voltage with 10H source impedance and 47F elec-
trolytic capacitor (100 mA/div). (See Figure 13)
Figure 15: Input reflected ripple current, is, through a 10 H source
inductor at nominal input voltage and rated load current (10 mA/div).
(See Figure 13)
Figure 16: Output voltage ripple at nominal input voltage and rated
load current (20 mV/div). Load capacitance: 1F ceramic capacitor
and 10F tantalum capacitor. Bandwidth: 20 MHz. (See Figure 13)
Figure 17: Output voltage vs. load current showing typical current limit
curves and converter shutdown points.
Figure 18: Load current (10A/div) as a function of time when the con-
verter attempts to turn on into a 10 mW short circuit. Top trace is an
expansion of the on-time portion of the bottom trace.
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
0
5
10
15
20
25
Load Current (A)
Output
Voltage
(V)
36 V
48 V
75 V
10 H
source
impedance
DC/DC
Converter
Figure 15
Figure 14
Figure 16
1 F
ceramic
capacitor
10 F,
100m
ESR
tantalum
capacitor
47 F,
<1
ESR
electrolytic
capacitor
VSOURCE
i
S
i
C
VOUT
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