Built-in RDS _(ON) 500mΩ MOSFET
STSPIN830, suitable for IA terminal devices and home appliances, etc.
Suitable for STSPIN840, coin handlers, multi-axis stages, etc.
On the 4th, STMicroelectronics released the STSPIN830 and STSPIN840 single-chip drivers, which simplify the design of low- and mid-power motor control in the 7V to 45V range. These drivers feature flexible control logic and low RDS _(ON) power switches for industrial applications, medical technology, and consumer electronics.

The STSPIN830, which drives a 3-phase BLDC motor, features mode setting pins that allow users to directly control the three half-bridges of the integrated power stage via U, V, and W Pulse-Width Modulated (PWM) inputs. This further enhances control flexibility by allowing signals to be applied individually to each gate. Dedicated sensing pins for each inverter leg simplify three-shunt or single-shunt current sensing settings for Field-Oriented Control (FOC).

STSPIN840 can drive two BLDC motors and one large motor by utilizing ST's parallel concept. This allows for low RDS _(ON) and high current ratings by configuring the integrated full bridge into two bridges or by using two sets of MOSFETs in parallel to form a single bridge.

Both drivers are equipped with various features to enable robust and stable driving, including a PWM current control circuit that can adjust off-time and a power saving pin that reduces power consumption, as well as protection circuits such as non-dissipative overcurrent protection, short circuit protection, ULVO (Undervoltage Lockout), overheating cutoff, and interlocking.

The integrated power stage of each device features a built-in MOSFET with an RDS _(ON) of only 500 mΩ, providing both efficiency and cost-effectiveness. The option to connect the output bridges of the STSPIN840 individually or in parallel enables material cost reduction in various motor applications.

Featuring high functional integration and flexibility, this driver enables intensive and cost-effective control in industrial, robotic, medical, building automation, and office equipment applications. The STSPIN830 is suitable for factory automation terminals, home appliances, small pumps, and fans for computers or general-purpose cooling systems. The STSPIN840 targets ATMs and cash handlers, multi-axis stage lighting mechanisms, thermal printers, textile machinery and sewing machines, and vending machines.

Both STSPIN830 and STSPIN840 are currently in production as 4 x 4mm QFN devices. The price of both products starts at $1.25 for orders of 1,000.

Two STM32 Nucleo expansion boards are provided to facilitate product evaluation and functional prototype implementation using the STM32 Open Development Environment. The X-NUCLEO-IHM16M1 for STSPIN830 and the X-NUCLEO-IHM15A1 for STSPIN840 are both priced at $16.