L6258EP_07 Datasheet, PDF (11/32 Pages) STMicroelectronics – PWM controlled high current DMOS universal motor driver

L6258EP
Functional description
2.1
Reference voltage
The voltage applied to VREF pin is the reference for the internal DAC and, together with the
sense resistor value, defines the maximum current into the motor winding according to the
following relation:
I_MAX
=
-⁰---^,--⁵----^â‹------^V----^R----^E----^F-
RS
=
--¹---
FI
⋅
V_{-----R----E---F-}
RS
where R_s = sense resistor value
Figure 3. Power bridge configuration
IN_A
V_S
T1
T2
OUT_A ^LOAD OUT_B
IN_B
T3
T4
OUTA
OUTB
Iload
0
OUTA
OUTB
Iload
0
OUTA
OUTB
0
Iload
Fig. 1A
Fig. 1B
Fig. 1C
D97IN624
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