STEVAL-IFN004V1 BLDC six-step motor driver based on the L6230 and STM8S105 Features Input range: 8 V up to 48 V (up to 35 W) STMicroelectronics STM8S105 8-bit microcontroller DMOS fully integrated three-phase motor driver L6230 in a QFN package Four-layer board Best miniaturization vs. thermal performance ratio Sensorless and hall-effect sensor operation Current sensing mode: single-shunt resistor Debug connector SPI interface RoHS compliant Offering dedicated hardware evaluation features, the STEVAL-IFN004V1 board is designed to help developers evaluate the device and develop their Description own applications. The STEVAL-IFN004V1 can be used together with the STM8Sxxx three-phase The STEVAL-IFN004V1 demonstration board is BLDC motor control software library and based on STMicroelectronics STM8S105 constitutes a cost-effective complete motor microcontroller and the DMOS fully integrated control evaluation and development platform. three-phase motor driver L6230 implementing 6-step scalar control of a BLDC motor. The board is designed as an evaluation environment for motor control applications in the range of 8 V - 48 V of DC bus voltage and up to 35 W, exploiting the embedded features of the STM8S105. This microcontroller includes internal 2 KB SRAM and 128 KB Flash, and SWD debugging. The L6230 DMOS driver features 2.8 A output peak current, non-dissipative overcurrent detection/protection, cross- conduction protection, internal comparator used for cycle-by-cycle current limitation/regulation, thermal shutdown and undervoltage lockout. The STEVAL-IFN004V1 is provided with a specific BEMF detection network with dynamic method selection. October 2011 Doc ID 022372 Rev 1 1/5 www.st.com 5 . 0% %3, 3% 3% ( 32 3%.3% 0/54 ( 4 ). 0& ). 3% 3% ( 6 ) )2 0 ) 0 3 0 - /3) 30 0 633 /54 %. 30) 3/ 0 /5 0 ). 3 ) 4 .234 %. ). 63 3 . ). ) 6 0 ) % 6 / )2 P Circuit schematic STEVAL-IFN004V1 1 Circuit schematic Figure 1. Schematic (part 1) .. )) ,&& , 66 66 66 PP 66 NN ++ 22 4 4 4 22 7 7 4 4 / . 6 5 5 / / . ,3% & % - % 0 % 0 6 0 ) % & ) % ) % ) % % ,-,- %, 22 % / % - 22 . ) ) . % % 00 44 6 , % 3 , 00 & 44 % KK 22 , 4( 5 / 5 3 / 5 00 KK - 44 ) 7 -- 3 ,, 3 00 ( 44 KK + & 0 33 4 3 ) 0 - - 33 ) -) - ) 4 4 ) . 0 % 0 0 0 = + 2 - ) 4 0 . ) 0 - ) 7 3 0 . ) 0 0 . ) 0 - ( ) 4 0 . ) 0 0 . ) 0 0 0 0 S S 6 0 D D 6 22 4 . 3 / / 0 6 6 / , , 66 ( ( KK / 6 4 0 3 NN 2 . 9 66 4 / 5 22 N E F % & % 2 ) % 0 NO I 3 T I LP - V 2/5 Doc ID 022372 Rev 1 40 40 4040 CA RE RE CE 2 2 %& 2 2 2 2 *0*0 63 N N *0*0 ( , U U 6 6 ,, N N , 5 5 %. % N N 6 6 % . 5 5 6 6 /5 /5 34 24 34 /5 5 K K 5 /./. 0 6 / HM . N( -% / U U 6 6 P P 6 6 % 6 N N 6 6 4-4- + + 5 5 N N 6 6 6 , 1, 1 5 5 4 4 ,-,- % -& 2 2 -& U U 6 6 N N % -& 0 6 4 % + + + + % 9 436 436 2 2 5 N N 6 6 P P 6 6 2 2 6 6 -% / %, 4( 3 4( / 2 2 63 + + 4 4 0 0 &) &) 4 4 0 0 &) &) 4 4 0 0 ,-,- &)&) K K 53 ,4 % & 2 2 2 2 2 2 K K N& N& 6 6 + + + + + + 2 2 2 2 /54%- 4 -& /54%- + + + + + +