参数资料
型号: NCP3121QPBCKGEVB
厂商: ON Semiconductor
文件页数: 21/41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:
已用 IC / 零件: NCP3121
其它名称: NCP3121QPBCKGEVBOS
NCP3121
Sequential Sequencing (First ? Up/Last ? Down
Sequence Configuration)
In sequential sequencing mode, the second output voltage
starts ramping when the first output voltage is already settled
and its power good signal is set. Figure 44 shows the
NCP3121’s configuration and standard waveforms. The
rising slope of both voltages can be selected independently
by the soft ? start capacitors’ values (C12, C22). When the
enable pin is deactivated, the second output voltage
decreases first, followed by the first output voltage. The
control logic is based on the internal power good signal; no
delay is added. The signal has the same threshold values as
the power good signal shown in the electrical table. The
sequential sequencing mode is also called first ? up/
last ? down and is ideal for DSPs with separate power
supplies for the core and the I/O ports.
Note: If enable control is not required, float the
EN(first)/SEQ(last) connection rather than pulling it to VIN
or a separate supply voltage. For Figure 44 this is
EN1/SEQ1. For Figure 45, this is EN1/SEQ4. The
NCP3121 will enable itself once VIN crosses the input
UVLO threshold.
R_TRACK
AVIN
C3
C13
R13
C12
GND
VIN
OUT1
Disable
Enable
EN1
PG1
PG2
EN1
SW1
VIN
VIN
L11
D11
R11
C11
SEQ1
EN2
SEQ2
TRACK1
TRACK2
NCP3121
VIN
VIN
VIN
VIN
SW2
C1
GND
GND
L21
C2
GND
R12
GND
GND
OUT2
D21
R21
C21
R_T
C22
GND
GND
R22
GND
C12 C22
GND
C22 C12
R23
C23
GND
GND
VOUT1
VOUT2
Figure 44. Sequential Configuration
http://onsemi.com
21
相关PDF资料
PDF描述
AT45DB321C-RU IC FLASH 32MBIT 40MHZ 28SOIC
MIC4429BM IC DRIVER MOSFET 6A LS 8-SOIC
SB550-E3/51 DIODE SCHOTTKY 5A 50V DO-201AD
NCP3120QPBCKGEVB EVAL BOARD FOR NCP3120QPBCKG
VF30100S-E3/45 DIODE SCHOTTKY 30A 100V ITO220AB
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