tb62300fg TOSHIBA Semiconductor CORPORATION, tb62300fg Datasheet - Page 24

• Manufacturer Part Number: tb62300fg
• Description: Dual Full-bridge Driver For Dc Motor
• Manufacturer: TOSHIBA Semiconductor CORPORATION

External Capacitor for Charge Pump
When driving a motor while V
2.0 A, the logical values for Ccp 1 and Ccp 2 are as shown in the graph below:
Choose Ccp 1 and Ccp 2 to be combined from the above applicable range. We recommend Ccp 1:Ccp 2 at
10:1 or more. (If our recommended values (Ccp = 0.22 µF, Ccp 2 = 0.022 µF) are used, the drive conditions in
the specification sheet are satisfied. (There is no capacitor temperature characteristic as a condition.)
When setting the constants, make sure that the charge pump voltage is not below the specified value and
set the constants with a margin (the larger Ccp 1 and Ccp 2, the more the margin).
Some capacitors exhibit a large change in capacitance according to the temperature. Make sure the above
capacitance is obtained under the IC ambient temperature.
0.045
0.035
0.025
0.015
0.005
0.05
0.04
0.03
0.02
0.01
DD
0
0
0.05 0.1 0.15 0.2 0.25
= 5 V, f
chop
Ccp 1 capacitance (µF)
Applicable range
Ccp 1 – Ccp 2
= 150 kHz, L = 10 mH under the conditions of V
24
0.3
0.35 0.4 0.45 0.5
Recommended
value
TB62300FG
M
2005-04-04
= 27 V and