ST EVAL6206Q User Manual

Dual full bridge with programmable overcurrent

Features

■ Voltage range from 8 V to 52 V

■ Phase current up to 2.5 Ar.m.s.

■ Adjustable overcurrent threshold

■ Logic inputs 5 V / 3.3 V compliant

■ Small application footprint with high thermal

performance

■ Suitable for use in combination with

PractiSPIN™ 2 software

EVAL6206Q

Data brief

Description

The EVAL6206Q demonstration board allows the
user to test the L6206Q functions. The dual full
bridges integrated into the L6206Q can be used
to drive a single 2-phase stepper motor or up to
four DC motors (unidirectional). The bridges can
also operate in parallel mode. The board can be
driven using the STEVAL-PCC009V2
communication board and the PractiSPIN 2
evaluation software.

AM11895v1

April 2012 Doc ID 023042 Rev 1 1/10

For further information contact your local STMicroelectronics sales office.

www.st.com

10

Board description EVAL6206Q

1 Board description

Table 1. EVAL6206Q electrical specifications

Parameter Value

Supply voltage (VS) 8 to 52 V

Maximum output current (each phase) 2.5 Ar.m.s.

Low level logic input voltage 0 V

High level logic input voltage 5 V / 3.3 V

Switching frequency up to 100 kHz

Operating temperature - 25 to +125 °C

L6206Q thermal resistance junction-to-ambient TBD

1. Logic inputs are 3.3 V and 5 V compliant.

Figure 1. Trimmer and connector locations

J3 and J4: OCDX to ENX pin connection

P

ower supply connector

(8 V - 52 V)

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Phase A connector

Phase B connector

Current sensing connector

C

ontrol board

connector

J7 and J8

OCD theshold regulation

CLOSED -

through control board.

OPEN - OCD threshold regulation

through R13 and R15
resistors (not mounted)

AM11896v1

2/10 Doc ID 023042 Rev 1

EVAL6206Q Board description

Table 2. Control board connector pinout (J2)

Pin Type Function

2 Ground Ground

3 Logic input Input IN1A of L6206Q

4 Logic input Input IN2A of L6206Q

5 Logic input Input IN1B of L6206Q

6 Logic input Input IN2B of L6206Q

11 Analog input Overcurrent threshold regulation for A bridge

12 Analog input Overcurrent threshold regulation for B bridge

13 Ground Ground

14 Supply voltage 3.3 V supply voltage

16 Logic input Input ENA of L6206Q

23 Ground Ground

24 Analog output Board identification system ID0

25 Analog output Board identification system ID1

27 Logic output Fault output for A bridge (OCDA output of L6206Q)

28 Ground Ground

29 Logic output Fault output for B bridge (OCDB output of L6206Q)

30 Logic input Input ENB of L6206Q

Others Unconnected

Table 3. Current sensing connector (J9)

Pin Type Function

1 Ground Ground

2 Analog output SENSEA pin of L6206Q

3 Analog output SENSEB pin of L6206Q

4 Ground Ground

1. R22/23 resistor and C12/13 capacitor must be added when output is used. The value of the RC network
should be chosen according to the target low-pass frequency of the filter.

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Doc ID 023042 Rev 1 3/10