AN2839 datasheet(32/40 Pages) STMICROELECTRONICS

32 / 40 page

Demonstration board

AN2839

32/40

Doc ID 15104 Rev 1

Figure 36.

PractiSPINTM ST7 demonstration board

A.2

L6228N evaluation with EVAL6208N

To easily evaluate the device in PowerDIP packages, it is possible to use the EVAL6208N,

replacing the device directly on the available socket.

We recommend changing the sense resistor values to manage lower load currents

according to the device’s specifications.

The EVAL6208N’s electrical schematic is shown in Figure 37 on page 33. For more

information, refer to AN1451 "L6208 fully-integrated two-phase stepper motor driver".

A.2.1

Important notes

●

JP1: should be closed in the INT position for use with the PractiSPINTM ST7 board.

●

C6: recommended change to 5.6 nF for safe overcurrent protection.

●

R8: recommended change to 100 k

Ω for safe overcurrent protection.

●

R9: recommended change to 100 k

Ω if EN pin is driven from the CN5 connector (for

example with PractiSPINTM ST7 board) for safe overcurrent protection.

●

R20, R24: set the maximum current obtainable through PractiSPINTM (see

PractiSPINTM documentation).

●

R2: recommended change to adequate value (depending on supply voltage) to obtain

5 V across D3.

AN2839 데이터시트(PDF) 32 Page - STMicroelectronics