ZMD ZIOL2401智能高压线路驱动方案

ZMD公司的ZIOL2401是采用线路驱动器／电平转移IC的智能功率解决方案，具有两个单独的I/O通路，提供了各种可配置的系统特性如输出转换速率可调,可置定输出级最大驱动电流等．它能提供工厂自动化中传感器/激励器系统的物理层,并支持通信标准IO-Link.本文介绍了ZIOL2401的主要特性,优势和方框图以及传感器接口应用电路和应用案例.
High Voltage Line Driver with Special IO-Link Functionality

The ZIOL2401 is a smart power solution using a line driver/level shifter IC with two independent I/O channels providing a wide range of configurable system features. It addresses the physical layer of sensor/ actuator systems in factory automation. It is especially designed to support the communication standard IO-Link. For IO-Link applications, specific functionality for Master and Device mode operation has been implemented.

The IC provides a wide range of configurable system features. For example, the output slew rate is adjustable in order to achieve excellent EMC behavior. The maximum current driven by the output stages can be set to a value that fits best the needs of the application.
The output drivers are push-pull stages which reach an RDSon of less than 3.3at all operational temperatures in tandem mode.

The configuration is stored in an on-chip EEPROM and automatically loaded into the IC’s control register during power up. The IC also provides status information, such as overload and over-temperature. An SPI interface supports access to configuration and status registers.

To minimize the number of devices needed for an application, the IC contains a DC/DC converter with an adjustable output voltage from 3V to 15V and a maximum continuous load current of 50mA.

The IC is fabricated in a powerful CMOS Mixed Signal Technology that allows supply voltages up to 40V. The EEPROM read/write functionality is guaranteed within the entire operating temperature range in combination with a low-voltage core supply of 3.3V.

ZIOL2401优势：

• Highest flexibility through configurable feature set

• Excellent EMC performance due to adjustable output slew rate control

• RDSon < 3.3in tandem mode at all operational temperatures

• Programmable limitation of driver output current

• Smart Power concept - DC/DC converter on-chip

• Nonvolatile storage of system configuration

• Space saving QFN package

ZIOL2401主要特性：

• Two independent high voltage I/O channels

• Supports physical layer of IO-Link (master and device side) and standard line driver

• Supports IO-Link COM1, COM2 and COM3

• IO-Link-specific WURQ detection

• Wide range of configurable feature set which is automatically loaded during power on

• DC/DC converter with adjustable output voltage to provide power for the application circuit

• On-chip EEPROM for system configuration (rd/wr), and status information (rd)

• SPI Interface to access on-chip registers

• 3.3V output, 5V tolerant inputs

• Chip temperature monitoring/diagnosis

• Quick over-current and over-temperature signaling

• Supply voltage 8V to 36V

• Current consumption less than 5mA

• Adjustable output current limitation of the channel driver in the range of 50mA … 300mA

• Operation temperature: –25℃to +85℃

• QFN24 Package (4mm x 4mm)



图１．ZIOL2401方框图



图２．ZIOL2401传感器接口应用电路



图３．ZIOL2401应用电路