参数资料
型号: TB62206F
元件分类: 运动控制电子
英文描述: STEPPER MOTOR CONTROLLER, 1.8 A, PDSO22
封装: 0.450 INCH, 1 MM PITCH, PLASTIC, HSOP-20/22
文件页数: 15/27页
文件大小: 368K
代理商: TB62206F
TB62206F
2005-03-02
22
External Capacitor for Charge Pump
When driving the stepping motor with VDD = 5 V, fchop = 150 kHz, L = 10 mH under the conditions of VM
= 13 V and 1.5 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 F, Ccp 2 = 0.02 F) 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 usage environment temperature.
Ccp 1 capacitance (F)
Ccp 1 – Ccp 2
Cc
p2
ca
pa
ci
ta
nce
(
F)
0.05
0
0.005
0.01
0.015
0.02
0.025
0.03
0.035
0.04
0.045
0.05 0.1 0.15 0.2 0.25
0.35 0.4 0.45 0.5
0.3
Applicable range
Recommended
value
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