参数资料
型号: ADM00360
厂商: Microchip Technology
文件页数: 15/38页
文件大小: 0K
描述: BOARD DEMO FOR MCP16301 D2PAK
设计资源: ADM00360 Bill of Materials
ADM00360 Schematic
特色产品: MCP16301 Demo Boards
标准包装: 1
主要目的: DC/DC,步降
输出及类型: 1,非隔离
输出电压: 3.3V
电流 - 输出: 300mA
输入电压: 4 ~ 26 V
稳压器拓扑结构: 降压
频率 - 开关: 500kHz
板类型: 完全填充
已供物品:
已用 IC / 零件: MCP16301
MCP16301
To calculate the shunt resistance, the maximum I BOOST
and I Z current are used at the minimum input voltage
V Z and I Z can be found on the Zener diode
manufacturer ’s data sheet. Typical I Z = 1 mA.
EQUATION 4-2:
SHUNT RESISTANCE
I Boost + I Z
V INMIN – V Z
R SH = ------------------------------
Boost Diode VZ = 7.5V
BOOST
C B
V IN
EN
MCP16301
SW
L
V OUT
12V
15V to 30V
C IN
V IN
FW Diode
C OUT
R TOP
FB
GND
R BOT
Boost Diode
BOOST
VZ = 7.5V
C B
V IN
EN
MCP16301
SW
L
V OUT
2V
12V
C IN
V IN
FW Diode
C OUT
R TOP
FB
GND
R BOT
FIGURE 4-4:
Series Regulator Boost Supply.
Series regulator applications use a Zener diode to drop
the excess voltage. The series regulator bias source
can be input or output voltage derived, as shown in
Figure 4-4 . The boost supply must remain between
3.0V and 5.5V at all times for proper circuit operation.
? 2011 Microchip Technology Inc.
DS25004A-page 15
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