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STMicroelectronics’ high-side switches pack intelligence and efficiency in space-saving outline

26/03/2024

Target applications include programmable logic controllers, industrial PC peripherals, and CNC machines

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New octal high-side switches from STMicroelectronics combine intelligent features and flexibility, with only 110mΩ RDS(on) (typical) per channel to preserve system efficiency, in a compact outline that saves PCB space.

The 0.7A IPS8200HQ and 1.0A IPS8200HQ-1 control capacitive, resistive, or inductive loads with one side connected to ground. With 10.5V-36V operating-voltage range and 3.3V/5V-compatible logic inputs, they are used in programmable logic controllers (PLCs), distributed I/O, industrial PC peripherals, and computer numerical control (CNC) machines. In addition, each can be controlled through either a serial (SPI) or parallel connection, allowing extra flexibility in system design.

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.

In addition, both devices integrate LED drivers to indicate the status of each output channel. An embedded 100mA DC/DC voltage regulator powers the LED driver, SPI logic, and input circuitry, and can also be used to supply external components such as optocouplers or digital isolators.

Meeting IEC 61000-4 specifications for ESD, burst, and surge immunity, the switches are suitable for use in equipment that must conform to IEC 61131-2 functional and EMC requirements for industrial controls.

The IPS8200HQ and IPS8200HQ-1 are in production now, in the 8mm x 6mm DFN48 package, from $5.11 for orders of 1000 pieces.

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.

Key features
  • Voltage operating range 10.5 V to 36 V
  • UVLO with hysteresis
  • Output current: 0.7 A or 1.0 A (IPS8200HQ or IPS8200HQ-1) per channel
  • Low supply current in OFF (1 mA) and ON (5.3 mA) states
  • 5 V and 3.3 V compatible I/Os
  • Selectable interface on logic side SPI or parallel
  • 5 MHz SPI (8 or 16-bits) with output enable, daisy chain, and MCU freeze detection
  • 100 mA DC/DC with integrated boot diode and adjustable output voltage
  • 4×2 LED matrix for efficient outputs state LEDs driving
  • Can drive all types of loads (resistive, capacitive, and inductive)
  • Per-channel overload and short-circuit protection
  • Per-channel/independent overtemperature protection
  • Fast demagnetization of inductive loads (Vout clamp)
  • Overvoltage protection (VCC clamping)
  • Loss of GND protection
  • Power Good (supply voltage level) diagnostic
  • Common fault open drain output
  • IC warning temperature detection
  • VFQFPN-48L (8×6 mm) package
  • Designed to meet IEC61131-2, IEC61000-4-2, IEC61000-4-4, and IEC61000-4-5
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