參數(shù)資料
型號: YNV05T16-0
廠商: POWER-ONE INC
元件分類: 電源模塊
英文描述: 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
封裝: SIP-10
文件頁數(shù): 22/26頁
文件大?。?/td> 423K
代理商: YNV05T16-0
OCT 12, 2006 revised to APR 12, 2007
Page 5 of 26
www.power-one.com
YNV05T16 DC-DC Converter Data Sheet
3.0-5.5 VDC Input; 0.7525-3.63 VDC Programmable @ 16 A
Operation
Input and Output Impedance
The YNV05T16 converter should be connected via
a low impedance to the DC power source. In many
applications, the inductance associated with the
distribution from the power source to the input of
the converter can affect the stability of the
converter. It is recommended to use decoupling
capacitors in order to ensure stability of the
converter and reduce input ripple voltage.
Internally, the converter has 52 F (low ESR
ceramics) of input capacitance.
In a typical application, low - ESR tantalum or
POS capacitors will be sufficient to provide
adequate ripple voltage filtering at the input of the
converter. However, very low ESR ceramic
capacitors of 47 μF to 100 μF are recommended
at the input of the converter in order to minimize
the input ripple voltage. They should be placed as
close as possible to the input pins of the converter.
The YNV05T16 has been designed for stable
operation
with
or
without
external
output
capacitance.
Low
ESR
ceramic
capacitors
(minimum 47μF) placed as close as possible to
the load are recommended for improved transient
performance and lower output voltage ripple.
It is important to keep low resistance and low
inductance PCB traces when the connecting load
to the output pins of the converter in order to
maintain good load regulation.
0
20
40
60
80
100
120
140
160
01
2
3
4
Vout [V]
In
p
u
tVo
lt
a
g
e
R
ip
p
le
[
m
V]
Vin=5.0V
Vin=3.3V
Fig. A: Input Voltage Ripple, CIN = 4 x 47 μF ceramic.
0
20
40
60
80
100
120
140
160
180
01
23
4
Vout [V]
In
p
u
tVo
lt
a
g
e
R
ip
p
le
[m
V]
Vin=5.0V
Vin=3.3V
Fig. B: Input Voltage Ripple, CIN = 470 μF polymer +
2 x 47 μF ceramic.
Fig. A shows input voltage ripple for various output
voltages using four 47μF input ceramic capacitors.
The same plot is shown in Fig. B with one 470 μF
polymer capacitor (6TPB470M from Sanyo) in
parallel with two 47 μF ceramic capacitors at full
load.
ON/OFF (Pin 10)
The ON/OFF pin is used to turn the converter on
or off remotely via a system signal. There are two
remote control options available, positive logic
(standard option) and negative logic, and both are
referenced to GND. Typical connections are
shown in Fig. C.
Rload
Vin
CONTROL
INPUT
Vin
GND
ON/OFF
Converter
R*
R* is for negative logic option only
Nex -v Series
TM
TRIM
Vout
SENSE
GND
6
5
7,8
1,2,4
9
10
3
Fig. C: Circuit configuration for ON/OFF function.
The positive logic version turns the converter on
when the ON/OFF pin is at a logic high or left
open, and turns converter off when at a logic low
or shorted to GND.
The negative logic version turns the converter on
when the ON/OFF pin is at a logic low or left open,
and turns the converter off when the ON/OFF pin
is at a logic high or connected to Vin.
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