High-side switch adds intelligence in smaller package
STMicroelectronics has launched two octal high-side switches with low on resistance and additional integrated control features.
The 0.7A IPS8200HQ and 1.0A IPS8200HQ-1 high side switch devices from ST control capacitive, resistive, or inductive loads with one side connected to ground and have a typical 110mΩ RDS(on) on resistance per channel.
With 10.5V-36V operating-voltage range and 3.3V/5V-compatible logic inputs, the high side switches are used in programmable logic controllers (PLCs), distributed I/O, industrial PC peripherals, and computer numerical control (CNC) machines. Each can be controlled through either a serial (SPI) or parallel connection, allowing extra flexibility in system design.
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Both switches integrate device protection and indicate status through dedicated diagnostic pins to aid intelligent system management. Protection includes output-overload (OVL), junction-overtemperature (OVT), and short-circuit protection for each channel, undervoltage lockout (UVLO), and ground disconnection with automatic shutoff. The diagnostic outputs indicate supply-voltage power-good, case overtemperature, SPI fault, and junction over-temperature.
The high side switch devices also add LED drivers to indicate the status of each output channel powered by an embedded 100mA DC-DC voltage regulator that also supplies the SPI logic and input circuitry as well as external components such as optocouplers or digital isolators.
They also meet IEC 61000-4 specifications for ESD, burst, and surge immunity and are suitable for equipment that must conform to IEC 61131-2 functional and EMC requirements for industrial controls.
Two industrial digital-output expansion cards are available to help evaluate the high-side switches. The X-NUCLEO-OUT16A1, which contains the 0.7A IPS8200HQ, and X-NUCLEO-OUT17A1 with the 1.0A IPS8200HQ-1, are available for $67.00 each. They are designed for use with STM32 Nucleo microcontroller boards and can be ordered directly from estore.st.com/en/.
The IPS8200HQ and IPS8200HQ-1 are in production now, in the 8mm x 6mm DFN48 package, from $5.11 for orders of 1000 pieces.
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