STEVAL-IHM021V2 STMicroelectronics, STEVAL-IHM021V2 Datasheet - Page 18

• Manufacturer Part Number: STEVAL-IHM021V2
• Description: BOARD EVAL L6390/STD5N52U
• Manufacturer: STMicroelectronics
• Type: Other Power Managementr

Specifications of STEVAL-IHM021V2

• Design Resources: STEVAL-IHM021V2 BOM STEVAL-IHM021V2 Schematic
• Main Purpose: Power Management, Motor Control
• Embedded: No
• Utilized Ic / Part: L6390, STD5N52U
• Primary Attributes: 3-Ph PMSM, 100 W 3-Phase Inverter, 110 ~ 230VAC
• Secondary Attributes: Field-oriented control(FOC) for PMSM
• Input Voltage: 110 VAC, 230 VAC
• Output Voltage: 520 V
• Operating Supply Voltage: 3.3 V, 15 V
• Output Power: 100 W
• Product: Power Management Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: L6390
• Other names: 497-10543

Bootstrap driver
18/22
Equation 3
where Q
bootstrap DMOS and T
For example: using a power MOS with a total gate charge of 30nC the drop on the bootstrap
DMOS is about 1 V, if the T
Equation 4
V
is too high, or the circuit topology doesn’t allow a sufficient charging time, an external diode
can be used.
Figure 8.
drop
V
CC
has to be taken into account when the voltage drop on C
gate
D
is the gate charge of the external power MOS, R
Bootstrap driver
BOOT
a
V
HVG
LVG
drop
charge
=
charge
I
V
BOOT
OUT
is the charging time of the bootstrap capacitor.
ch
Doc ID 14493 Rev 5
drop
arg
H.V.
is 5 μs. In fact:
e
R
=
dson
C
TO LOAD
BOOT
30nC
-------------- - 120Ω
5μs
→
V
⋅
V
CC
drop
=
∼
------------------ R
T
0.7V
Q
ch
b
dson
gate
HVG
LVG
BOOT
arg
e
is the on resistance of the
is calculated: if this drop
dson
BOOT
OUT
H.V.
D99IN1067
C
TO LOAD
BOOT
L6390