KA3017 Fairchild Semiconductor, KA3017 Datasheet - Page 12

• Manufacturer Part Number: KA3017
• Description: MOSFET & Power Driver ICs QFPH-48
• Manufacturer: Fairchild Semiconductor

Specifications of KA3017

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

KA3017
Calculation of Gain & Torque Limit Current
0.255 is made from GM times R1 and is a fixed value within IC.
Vmax (see above block diagram) is set to 350mV.
12
Itl mA
Gain
ECR
EC
=
=
0.255
-------------- -
Vmax
--------------- -
R
R
S
S
+
Gm
=
350 mV
----------------------- -
R
S
Absolute
Values
Current / Voltage
Convertor
Vin
+
VM
R1
Max. output current limiting
VM
+
Vmax
+
+
Negative
Feedback loop
Driver
I
O
H1
VM
Commutation
Distributor
Power
Transistors
R
CS1 (Pin 9)
S
H2
V
S
+
H3
Output
Current sense
U
W
V
I
O