ST公司的STSPIN840是緊湊的有刷DC馬達驅動器，能同時驅動兩個雙向有刷DC馬達，在4 x 4 mm QFN封裝上集成了兩個控制邏輯和全保護低RDSon兩個全橋功率級，工作電壓從7V到45V，最大輸出電流1.5Arms，全保護包括非耗散過流保護，短路保護，欠壓鎖住和熱關斷。主要用在工業自動化和服務機器人，醫療和保健，ATM，舞臺照明，熱打印機，紡織和縫紉機，銷售機以辦公和家庭自動化。本文介紹了STSPIN840主要特性，框圖，應用框圖和電路，以及馬達驅動擴展板X-NUCLEO-IHM15A主要特性，電路圖和材料清單。

The STSPIN840 is a compact brushed DC motordriver able to drive two bi-directional brushed DCmotors simultaneously. It integrates， in a verysmall 4 x 4 mm QFN package， both the controllogic and a fully protected low RDSon dual fullbridgepower stage.

Thanks to a dedicated PARALLEL input pin theparallel mode function can be enabled，transforming the device in an equivalent andmore powerful single full-bridge able to deliver upto 3Arms current at an equivalent HS + LS RDSonof 500 mohm.

The STSPIN840 embeds two independent PWMcurrent controllers （one for each full bridge） basedon user settable values of reference voltage andOFF time.The devices can be forced in a low consumptionstate reducing the total current consumption downto less than 45uA.

As with all other devices from the STSPIN family，the STSPIN840 integrates a complete set ofprotections for the power stages （non-dissipativeovercurrent， thermal shutdown， short-circuit andundervoltage lockout） making it a bulletproofsolution for the new wave of demanding industrialapplications.

STSPIN840主要特性：

? Operating voltage from 7 to 45 V

? Maximum output current 1.5 Arms

? RDSon HS + LS = 1 ohmtyp.

? Current control with adjustable OFF time

? Current sensing based on external shuntresistors

? Full protections set

– Non-dissipative overcurrent protection

– Short-circuit protection

– Undervoltage lockout

– Thermal shutdown

? Parallel operation mode achieving single fullbridgeconfiguration with output IRMS = 3 Armsand RDSon HS + LS = 500 mohmtyp.

? Low standby current consumption

STSPIN840應用：

? Industrial automation and service robots

? Medical and health care

? ATM and money handling machines

? Stage lighting

? Thermal printers

? Textile and sewing machines

? Vending machines

? Office and home automation

圖1.STSPIN840框圖（通用）

圖2.STSPIN840 PARALLEL模式應用電路

圖3.STSPIN840典型應用電路

基于STSPIN840的雙刷DC馬達驅動擴展板X-NUCLEO-IHM15A

Dual brush DC motor driver expansion board based on STSPIN840 for stm32 Nucleo The X-NUCLEO-IHM15A1 dual brush DC motor driver expansion board is based on the STSPIN840 for STM32 Nucleo.

It provides an affordable and easy-to-use solution for the implementation of compact motor driving applications such as thermal printers， robotics and toys.

Thanks to the parallel operation， it can be easily converted to a single brush DC driver with double current capability.

The current limiters and complete set of protection features make it suitable for rugged applications.

The X-NUCLEO-IHM15A1 is compatible with the Arduino UNO R3 connector and most STM32 Nucleo boards.

馬達驅動擴展板X-NUCLEO-IHM15A主要特性：

Voltage range from 7 to 45 V

Output current up to 1.5 Arms for each motor

Two independent current limiters with adjustable OFF time

Full protection set including： overcurrent， short-circuit， under voltage lock out and thermal shutdown

Parallel operation

Compatible with Arduino UNO R3 connector

Compatible with STM32 Nucleo boards

圖4.馬達驅動擴展板X-NUCLEO-IHM15A外形圖

圖5.馬達驅動擴展板X-NUCLEO-IHM15A開關和連接器位置圖

圖6.馬達驅動擴展板X-NUCLEO-IHM15A電路圖

馬達驅動擴展板X-NUCLEO-IHM15A材料清單：

詳情請見：

https://www.st.com/content/st_com/en/products/ecosystems/stm32-open-development-environment/stm32-nucleo-expansion-boards/stm32-ode-move-actuate-hw/x-nucleo-ihm15a1.html

和

https://www.st.com/content/ccc/resource/technical/document/user_manual/group1/25/97

/d7/aa/39/2e/42/53/DM00492395/files/DM00492395.pdf/jcr:content/translations/en.DM00492395.pdf

以及

https://www.st.com/content/ccc/resource/technical/layouts_and_diagrams/schematic_pack

/group0/09/77/78/f0/e3/df/4b/88/x-nucleo-ihm15a1_schematic/files/x-nucleo-ihm15a1_schematic.pdf/jcr:content/translations/en.x-nucleo-ihm15a1_schematic.pdf

和https://www.st.com/content/ccc/resource/technical/document/bill_of_materials/group0

/67/7a/38/e4/32/b4/42/ff/x-nucleo-ihm15a1_bom/files/x-nucleo-ihm15a1_bom.pdf/jcr:content/translations/en.x-nucleo-ihm15a1_bom.pdf

en.x-nucleo-ihm15a1_schematic.pdf

en.DM00492395.pdf

stspin840（1）.pdf

en.x-nucleo-ihm15a1_bom.pdf