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| 型号： | NCP3065BBGEVB |
| 厂商： | ON Semiconductor |
| 文件页数： | 9/18页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL NCP3065 MR16 BOOST |
| 设计资源： | NCP3065BBGEVB Schematic NCP3065BBGEVB Gerber Files NCP3065BBGEVB Bill of Materials |
| 标准包装： | 1 |
| 电流 - 输出 / 通道： | 350mA |
| 输出及类型： | 1，非隔离 |
| 输出电压： | 8 ~ 12 V |
| 输入电压： | 6 ~ 16 V 或 12VAC |
| 已供物品： | 板 |
| 已用 IC / 零件： | NCP3065 |
| 其它名称： | NCP3065BBGEVB-ND NCP3065BBGEVBOS |
NCP3065, NCV3065
APPLICATIONS
Figures 16 through 24 show the simplicity and flexibility
of the NCP3065. Two main converter topologies are
demonstrated with actual test data shown below each of the
circuit diagrams.
Figure 16 gives the relevant design equations for the key
parameters. Additionally, a complete application design aid
for the NCP3065 can be found at www.onsemi.com.
(See Notes 8, 9, 10)
ton
toff
t on
Step ? Down
Vout ) VF
Vin * VSWCE * Vout
ton
toff
Step ? Up
Vout ) VF * Vin
Vin * VSWCE
ton
toff
CT + 381.6 @ 10
C T
f
ton
toff
) 1
fosc
* 6
* 343 @ 10 * 12
f
ton
toff
) 1
I L(avg)
Iout
Iout
ton
toff
) 1
I pk (Switch)
IL(avg) )
D IL
2
IL(avg) )
D IL
2
R SC
0.20
Ipk (Switch)
0.20
Ipk (Switch)
L
Vin * VSWCE * Vout
D IL
ton
Vin * VSWCE
D IL
ton
V ripple(pp)
D IL
1
8 f CO
2
) (ESR) 2
[
ton Iout
CO
) D IL @ ESR
V out
VTH
R2
R1
) 1
VTH
R2
R1
) 1
I out
V ref R sense
V ref R sense
8. V SWCE ? Darlington Switch Collector to Emitter Voltage Drop, refer to Figures 7, 8, 9 and 10.
9. V F ? Output rectifier forward voltage drop. Typical value for 1N5819 Schottky barrier rectifier is 0.4 V.
10. The calculated t on /t off must not exceed the minimum guaranteed oscillator charge to discharge ratio.
Figure 16. Design Equations
The Following Converter Characteristics Must Be Chosen:
V in ? Nominal operating input voltage.
V out ? Desired output voltage.
I out ? Desired output current.
D I L ? Desired peak ? to ? peak inductor ripple current. For maximum output current it is suggested that D I L be chosen to be
less than 10% of the average inductor current I L(avg) . This will help prevent I pk (Switch) from reaching the current limit threshold
set by R SC . If the design goal is to use a minimum inductance value, let D I L = 2(I L(avg) ). This will proportionally reduce
converter output current capability.
f ? Maximum output switch frequency.
V ripple(pp) ? Desired peak ? to ? peak output ripple voltage. For best performance the ripple voltage should be kept to a low
value since it will directly affect line and load regulation. Capacitor C O should be a low equivalent series resistance (ESR)
electrolytic designed for switching regulator applications.
http://onsemi.com
9
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| NCP3065D1SLDGEVB | 功能描述:电源管理IC开发工具 SEPIC LED DRV MR16BULB 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 |
| NCP3065D2SLDGEVB | 功能描述:电源管理IC开发工具 SEPIC LED DRV 350MA 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 |
| NCP3065D3SLDGEVB | 功能描述:电源管理IC开发工具 SEPIC LED DRV 700MA 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 |
| NCP3065DR2G | 功能描述:直流/直流开关调节器 1.5A SW REG FOR LED APPL 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 |
| NCP3065DR2G | 制造商:ON Semiconductor 功能描述:DC/DC Converter IC |
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