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| 型号： | YNC12S20-0 |
| 厂商： | Power-One |
| 文件页数： | 5/28页 |
| 文件大小： | 0K |
| 描述： | CONVERT DC/DC PROGRAM SMD |
| 标准包装： | 310 |
| 系列： | * |
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YNC12S20 DC-DC Converter Data Sheet
9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 20 A
Nex -c Series
Operation
Input and Output Impedance
R*
Vin
TM
Converter
(Top View)
SENSE
The Y-Series converter should be connected via a
Vin
ON/OFF
Vout
low impedance to the DC power source. In many
applications, the inductance associated with the
distribution from the power source to the input of
GND
TRIM
Rload
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. The
converter has an internal input capacitance of 40
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 -10 0 μF are recomm ended 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.
YNC12S20 has been designed for stable
operation with or without external capacitance.
Low ESR ceramic capacitors placed as close as
possible to the load (Min 47 μF) are recommended
for improved transient performance and lower
output voltage ripple.
CONTROL
INPUT
R* is for negative logic option only
Fig. A: Circuit configuration for ON/OFF function.
The negative logic version turns the converter on
when the ON/OFF pin is at logic low or left open,
and turns the 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 a
positive logic version, and pulled-down for a
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
? 0.8 V
- 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.
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,
Remote Sense (Pin 2)
The remote sense feature of the converter
compensates for voltage drops occurring only
between Vout pin (Pin 4) of the converter and the
load. The SENSE (Pin 2) 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 a solid ground
plane is recommended to provide low voltage
and
both
are referenced
to
GND.
Typical
drop.
connections are shown in Fig. A.
If remote sensing is not required, the SENSE pin
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.
must be connected to the Vout pin (Pin 4) to
ensure the converter will regulate at the specified
output voltage. If these connections are not made,
the converter will deliver an output voltage that is
slightly higher than the specified value.
ZD-02137 Rev. 2.1 21-Jun-10
Page 5 of 28
www.power-one.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| YNC12S20-0G | 功能描述:DC/DC转换器 RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
| YNC12S20A-0 | 制造商:POWER-ONE 制造商全称:Power-One 功能描述:9.6-14 VDC Input; 0.7525-5.5 VDC Programmable 20 A |
| YNC12S20A-0G | 制造商:POWER-ONE 制造商全称:Power-One 功能描述:9.6-14 VDC Input; 0.7525-5.5 VDC Programmable 20 A |
| YNC12S20A-D | 制造商:POWER-ONE 制造商全称:Power-One 功能描述:9.6-14 VDC Input; 0.7525-5.5 VDC Programmable 20 A |
| YNC12S20A-DG | 制造商:POWER-ONE 制造商全称:Power-One 功能描述:9.6-14 VDC Input; 0.7525-5.5 VDC Programmable 20 A |
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