KA3014 Fairchild Semiconductor, KA3014 Datasheet - Page 13

• Manufacturer Part Number: KA3014
• Description: MOSFET & Power Driver ICs QFPH-48
• Manufacturer: Fairchild Semiconductor

Specifications of KA3014

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

KA3014
3. TORQUE & OUTPUT CURRENT CONTROL
Torque & output current control
• By amplifying the voltage difference between E
• The current sense amp produces the input for the gain controller to allow the output current (I
• In the end, the signals of the servo IC control the velocity of the motor by controlling the output current (I
• When the junction temperature rises up to about 175 C, then the output drive circuit will shut down.
• The range of the torque control input voltage is as shown below.
The input range (E
3 mV
V
(V
controlled by the input voltage (V
converted into V
RNF
[V]
AMP
) for the current sense amp.
E
C
Reverse
+
E
C
RNF
CR
) of the torque sense amp is 0.5V ~ 3.3V.
.
Ecoff
Torque sense amp
0
Ecoff+
AMP
), where the output current (I
V
AMP
Forward
+
C
and E
CR
13
from the servo IC, the torque sense amp produces the input
E
CR
Current sense amp
-E
C
[V]
O
) is detected by the sense resistor (R
TSD
Ec < E
Ec > E
CR
CR
V
+
Controller
M
Gain
Forward rotation
Stop after detecting
reverse rotation
O
) of the driver to be
Driver
Rotation
V
M
R
V
I
RNF
O
NF
NF
O
) of the driver.
) and is
M