- 您现在的位置：买卖IC网 > PDF目录258068 > DCR012405U/1K (TEXAS INSTRUMENTS INC) 1-OUTPUT 1 W DC-DC REG PWR SUPPLY MODULE PDF资料下载
参数资料
| 型号： | DCR012405U/1K |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 1 W DC-DC REG PWR SUPPLY MODULE |
| 封装： | ROHS COMPLIANT, PLASTIC, SOP-28/12 |
| 文件页数： | 4/17页 |
| 文件大小： | 304K |
| 代理商： | DCR012405U/1K |
DCR01 Series
12
SBVS013C
GENERATION OF DUAL POLARITY VOLTAGES
FROM TWO SELF-SYNCHRONIZED DCR01s
Two DCR01s can be configured to produce a dual polarity
supply (i.e.,
±5V); the circuit must be connected as shown in
Figure 3.
It must be observed that both devices are producing a
positive regulated output, therefore the ERROR, ENABLE,
and VREC are all relative to that particular devices 0V and
must not be directly connected together, or in the case of the
negative output device connected to the common 0V output.
PCB LAYOUT
RIPPLE AND NOISE
Careful consideration should be given to the layout of the
PCB in order for the best results to be obtained.
The DCR01 is a switching power supply and as such can
place high peak current demands on the input supply. In
order to avoid the supply falling momentarily during the fast
switching pulses, ground and power planes should be used
to track the power to the input of DCR01 (this will also serve
to reduce noise on the circuit). If this is not possible, the
supplies must be connected in a star formation, with the
tracks made as wide as possible.
If the SYNC pin is being used, the tracking between device
SYNC pins should be short to avoid stray capacitance. If the
SYNC pin is not being used it is advisable to place a guard
ring (connected to input ground) around this pin to avoid any
noise pick up.
The output should be taken from the device using ground
and power planes. This will ensure minimum losses.
A good quality low ESR capacitor placed as close as
practicable across the input will reduce reflected ripple and
ensure a smooth start up.
A good quality low ESR capacitor placed as close as
practicable across the rectifier output terminal and output
ground will give the best ripple and noise performance.
THERMAL MANAGEMENT
Due to the high power density of this device, it is advisable
to provide a ground plane on the output. The output regula-
tor is mounted on a copper leadframe, and a ground plane
will serve as an efficient heatsink.
DCR
01
V
OUT
V
IN
C
IN
(1)
C
OUT = 0.1F
C
FILTER = 1F
V
POS O/P
V
NEG O/P
0V
ENABLE
V
REC
ERROR
V
S
U1
0V
SYNC
DCR
01
V
OUT
V
IN
C
IN
(1)
C
OUT = 0.1F
C
FILTER = 1F
0V
ENABLE
V
REC
ERROR
V
S
U2
0V
SYNC
0V
NOTE: (1) 2.2
F capacitor with low ESR for 5V
devices and 0.47
F for 12V and 24V devices.
FIGURE 3. Dual Polarity Voltage Generation from Two Self-Synchronized DCR01’s.
相关PDF资料 |
PDF描述 |
|---|---|
| DHC2805S | 1-OUTPUT 6 W DC-DC REG PWR SUPPLY MODULE |
| DM1501-9RD5AFU | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| DM1601-7RD6AFU | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| DM1901-7RD5AFU | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| DM3020-9PD7AFU | 3-OUTPUT DC-DC REG PWR SUPPLY MODULE |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DCR012405UE4 | 功能描述:DC/DC转换器 Mini 1W Iso Reg 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: |
| DCR015 | 制造商:Dewalt 功能描述:Worksite Charger Radio 制造商:DEWALT 功能描述:JOBSITE RADIO CHARGER 12V/20V MAX |
| DCR01505 | 制造商:BB 制造商全称:BB 功能描述:Miniature, 1W Isolated REGULATED DC/DC CONVERTERS |
| DCR019JBE400 | 制造商:JAE 制造商全称:JAE 功能描述:HDMI Standard Digital Interface Connector |
| DCR019WBE400 | 制造商:JAE 制造商全称:JAE 功能描述:HDMI Standard Digital Interface Connector |
发布紧急采购，3分钟左右您将得到回复。