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参数资料
| 型号： | NCP3121QPBCKGEVB |
| 厂商： | ON Semiconductor |
| 文件页数： | 16/41页 |
| 文件大小： | 0K |
| 描述： | EVAL BOARD FOR NCP3121QPBCKG |
| 设计资源： | NCP3121 EVB BOM NCP3121QPBCKGEVB Gerber Files NCP3121QPBCKGEVB Schematic |
| 标准包装： | 1 |
| 主要目的： | DC/DC，步降 |
| 输出及类型： | 2，非隔离 |
| 输出电压： | 3.3V，5V |
| 电流 - 输出： | 3A，3A |
| 输入电压： | 12V |
| 稳压器拓扑结构： | 降压 |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | NCP3121 |
| 其它名称： | NCP3121QPBCKGEVBOS |
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NCP3121
Table 2. Inductor Examples
L [ m H]
33
22
15
10
9
8.2
6.8
5.6
5.0
3.3
Part Number
DO5010H ? 333
PF0382.333NL
MSS1278 ? 333
74458133
PF0552.333NL
DS5022P ? 223
P0648.223
74458122
MSS1246T ? 223
PF0382.223NL
DO3316P ? 153
P0751.153NL
MSS1260T ? 153
74459115
74458115
DO3340P ? 103
DS5022P ? 103
7445610
74459010
DO3316P ? 103
P0751.103NL
P1169.123NL
DS3316T ? 822
MSS1246 ? 822
74456068
DO33165 ? 562
74456056
DO5022P ? 562
MSS7341 ? 502
DO3316P ? 332
DS5022P ? 332
Shielded/
Non ? shielded
N
N
S
N
S
S
N
N
S
N
N
N
S
S
N
N
S
N
S
N
N
S
N
S
N
N
N
S
S
S
S
I rms [A]
3.0
3.1
3.1
3.0
3.7
3.1
3.3
3.5
3.14
3.5
3.1
3.0
3.5
3.5
4.0
3.5
3.9
3.3
3.9
3.5
3.8
3.5
4.15
4.67
3.8
4.65
4.0
4.1
4.7
4.7
3.3
DCR max [m W }
66
65
80
66
54.1
59
61
47
70
47
46
46
40
48
36
40
42
45
40
34
38
37
32
35
34
21
32
3
24
26
39
Manufacturer
Coilcraft
PULSE
Coilcraft
WE
PULSE
Coilcraft
PULSE
WE
Coilcraft
PULSE
Coilcraft
PULSE
Coilcraft
WE
WE
Coilcraft
‘Coilcraft
WE
WE
Coilcraft
PULSE
PULSE
Coilcraft
Coilcraft
WE
Coilcraft
WE
Coilcraft
Coilcraft
Coilcraft
Coilcraft
Web
www.coilcraft.com
www.pulseeng.com
www.coilcraft.com
www.we ? online.com
www.pulseeng.com
www.coilcraft.com
www.pulseeng.com
www.we ? online.com
www.coilcraft.com
www.pulseeng.com
www.coilcraft.com
www.pulseeng.com
www.coilcraft.com
www.we ? online.com
www.we ? online.com
www.coilcraft.com
www.coilcraft.com
www.we ? online.com
www.we ? online.com
www.coilcraft.com
www.pulseeng.com
www.pulseeng.com
www.coilcraft.com
www.coilcraft.com
www.we ? online.com
www.coilcraft.com
www.we ? online.com
www.coilcraft.com
www.coilcraft.com
www.coilcraft.com
www.coilcraft.com
I D(AVG) +
Output Rectifier Diode
When the high ? side switch is on, energy is stored in the
magnetic field in the inductor. During off time, the internal
MOSFET switch is off. Since the current in the inductor has
to discharge, the current flows through the rectifying diode
to the output. A Schottky diode is recommended due to low
diode forward voltage and very short recovery times, which
positively impacts the step down voltage converter’s overall
efficiency. Another choice could be fast recovery or
ultra ? fast recovery diodes. It should be noted that some
types of these diodes with an abrupt turn ? off characteristic
may cause instability or EMI troubles.
The peak reverse voltage is equal to the maximum input
voltage. The peak conducting current is clamped by the
current limit of the NCP3121. Use of Schottky barrier diodes
reduces diode reverse recovery input current spikes. For
switching regulators operating at low duty cycles, it is
beneficial to use rectifying diodes with somewhat higher
RMS current ratings (thus lower forward voltages). This is
because the diode conduction interval is much longer than
that of the transistor. Converter efficiency will be improved
if the voltage drop across the diode is lower. The average
current can be calculated from:
I LOAD V IN * V OUT
V IN
http://onsemi.com
16
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相关代理商/技术参数 |
参数描述 |
|---|---|
| NCP3122MNTXG | 功能描述:直流/直流开关调节器 Dual 2.0 Switching Regulator RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| NCP3122QPBCKGEVB | 功能描述:电源管理IC开发工具 NCP3122 2A HF BUCK DB RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| NCP3123MNTXG | 功能描述:直流/直流开关调节器 Dual 3.0 A Switching Regulator RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| NCP3123MNTXG-CUT TAPE | 制造商:ON 功能描述:NCP3123 Series 13.2 V Dual 3 A Step-Down DC/DC Switching Regulator - QFN-32 |
| NCP3123QPBCKGEVB | 功能描述:电源管理IC开发工具 NCP3123 3A HF BUCK DB RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
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