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单片振荡器/电源驱动器-ZCC6501
资料介绍
单片振荡器/功率驱动器ZCC6501
ZCC6501是一个单片振荡器/电源驱动器，专为小尺寸、隔离接口应用中的隔离电源而设计。它从3.3伏或5伏直流电源驱动一个低剖面，中心抽头变压器初级。二次绕组可根据变压器匝数比提供任何隔离电压。ZCC6501由一个振荡器和一个栅极驱动电路组成，栅极驱动电路提供互补的输出信号来驱动接地参考的N通道电源开关。内部逻辑确保在两个开关之间动作之前断开。ZCC6501有一个小型SOT23-5封装，指定在-40°C到125°C的温度下运行。
部分文件列表
| 文件名 | 大小 |
| ZCC6501替代SN6501.pdf | 1M |
部分页面预览
（完整内容请下载后查看）ZCC6501
Transformer Driver for Supplies
APPLICATIONS
1
FEATURES
•
•
•
Push-Pull Driver for Small Transformers
Single 3.3 V or 5 V Supply
•
Isolated Interface Power Supply for CAN, RS-
485, RS-422, RS-232, SPI, I2C, Low-Power LAN
•
•
•
Industrial Automation
Process Control
High Primary-side Current Drive:
–
–
5 V Supply: 350 mA (max)
3.3 V Supply: 150 mA (max)
Medical Equipment
•
•
Low Ripple on Rectified Output Permits Small
Output Capacitors
Small 5-pin SOT23 Package
DESCRIPTION
The
is a monolithic oscillator/power-driver, specifically designed for small form factor, isolated power
ZCC6501
supplies in isolated interface applications. It drives a low-profile, center-tapped transformer primary from a 3.3 V
or 5 V DC power supply. The secondary can be wound to provide any isolated voltage based on transformer
turns ratio.
The
consists of an oscillator followed by a gate drive circuit that provides the complementary output
ZCC6501
signals to drive the ground referenced N-channel power switches. The internal logic ensures break-before-make
action between the two switches.
ZCC6501
The
is available in a small SOT23-5 package, and is specified for operation at temperatures from –40°C
to 125°C.
VIN = 3.3V
10µF
TPS76350
MBR0520L
VOUT
1:2.2
VOUT-REG = 5V
4
5
3
2
1
1
2
3
5
4
GND
GND
D2
Vcc
D1
IN
OUT
GND
EN
10µF 0.1µF
10µF
NC
MBR0520L
Figure 1. Typical Operating Circuit
1
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