STEVAL-IHM021V1 STMicroelectronics, STEVAL-IHM021V1 Datasheet - Page 18

• Manufacturer Part Number: STEVAL-IHM021V1
• Description: BOARD EVAL L6390/STD5NK52ZD
• Manufacturer: STMicroelectronics
• Type: Motor / Motion Controllers & Driversr

Specifications of STEVAL-IHM021V1

• Main Purpose: Power Management, Motor Control
• Embedded: Yes, MCU, 32-Bit
• Utilized Ic / Part: L6390, STD5NK52ZD-1
• Primary Attributes: 3-Ph PMSM, 100 W 3-Phase Inverter, 110 ~ 230VAC
• Secondary Attributes: Field-Oriented Control (FOC) of Sinusoidal-Shaped Back-EMF
• Input Voltage: 110 V to 230 V
• Product: Power Management Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: L6390, STD5NK52ZD-1
• Other names: 497-8404

Board schematics
8.4
18/24
The voltage at node "OPOUT2" can be computed as the sum of a bias and a signal
component, respectively equal to:
Equation 4
Equation 5
With the default values this gives:
●
●
As such, the maximum current amplifiable without distortion is equal to:
Equation 6
Note that you could modify the I
resistors.
Brake function
The STEVAL-IHM021V1 board provides a brake function that through the pull-up of a single
brake signal simultaneously turns the three low side switches ON , shorting the 3-phase
load. The feature is accessed using one single small-signal bipolar transistor (Q7), whose
function is to pull down the cathodes of six small signal diodes connected to each of the six
logic inputs (HIN1,
series resistors together with the input lines avoid any conflict with the external controller
input signals, giving priority to the brake signal (see
V
V
BIAS
SIGN
=
=
1.86
2.91
⋅
V
R
LIN 1
V
SHUNT
SIGN
V
, HIN2,
BIAS
=
I
⋅
MAX
I
I
⋅
=
R
3.3
SHUNT
=
MAX
LIN 2
. 2
R36
3
91
value by simply changing the values of the shunt
3 .
⋅
R41//R43
⋅
, HIN3,
R41
−
R
+
. 1
SHUNT
R41//R43
R36//R43
86
+
R36//R43
LIN 3
=
R
. 0
SHUNT
⎛
⎜
⎝
Figure 12
495
1
) of the L6390 gate drivers. The in-
+
⎛
⎜
⎝
R38
1
+
=
R42
R38
1
+
1 .
).
R39
R42
A
+
R39
⎞
⎟
⎠
⎞
⎟
⎠
UM0580