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参数资料
| 型号： | YNL12S10015-0G |
| 厂商： | POWER-ONE INC |
| 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 |
| 文件页数： | 22/26页 |
| 文件大小： | 438K |
| 代理商： | YNL12S10015-0G |
YNL12S100xy DC-DC Converter Family Data Sheet
9.6-14 VDC Input; 1.0-5.0 VDC Output @ 10A
MAR 23, 2007 revised to APR 16, 2007
Page 5 of 26
www.power-one.com
Operation
Input and Output Impedance
The YNL12S100xy 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 converter stability
and reduce input ripple voltage. The converter has
an internal input capacitance of 20 μF with very
low ESR (ceramic capacitors).
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 47 μF-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 YNL12S10 has been designed for stable
operation with no external capacitance as well with
external
capacitance.
Low
ESR
ceramic
capacitors placed as close as possible to the load
(minimim of 47μF) are recommended for improved
transient performance and lower output voltage
ripple.
It is important to keep low resistance and low
inductance PCB traces for connecting load to the
output pins of the converter in order to maintain
good load regulation.
ON/OFF (Pin 1)
The ON/OFF pin is used to turn the power
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. A.
R* is for negative logic option only
Rload
Vin
CONTROL
INPUT
Vin
GND
ON/OFF
SENSE
(Top View)
Converter
TRIM
Vout
R*
Nex -l Series
TM
Fig. A: 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 the 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 converter off when the ON/OFF pin is at
a logic high or connected to Vin.
ON/OFF pin is internally pulled-up to Vin for
positive logic version, and pulled-down for
negative logic version. A TTL or CMOS logic gate,
open collector (open drain) transistor can be used
to drive ON/OFF pin. When using open collector
(open drain) transistor with a negative logic option,
add a pull-up resistor (R*) of 75 k to Vin as shown
in Fig. A; This device must be capable of:
- sinking up to 0.2 mA at a low level voltage of
≤ 0.8V
- sourcing up to 0.25 mA at a high logic level of
2.3V – 5V
- sourcing up to 0.75 mA when connected to Vin.
Remote Sense (Pin 2)
The remote sense feature of the converter
compensates for voltage drops occurring only
between Vout pin of the converter and the load.
The SENSE pin should be connected at the load
or at the point where regulation is required (see
Fig. B). There is no sense feature on the output
GND return pin, where the solid ground plane
should provide low voltage drop.
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