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| 型号： | LB11691 |
| 元件分类： | 运动控制电子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, 0.05 A, PDIP36 |
| 封装： | 0.400 INCH, DIP-36 |
| 文件页数： | 5/19页 |
| 文件大小： | 204K |
| 代理商： | LB11691 |
TDF8546
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 3 — 30 August 2011
13 of 61
NXP Semiconductors
TDF8546
I2C-bus controlled 4
45 W best efficiency amplifier
7.3.2 Switching distortion
constant at ACGND level, and current in both channels is shared (best efficiency mode
active). If the output voltage increases above half the supply voltage, the switch needs to
open and voltage V2 needs to decrease to eliminate distortion from the front loud speaker
RL. This opening and closing of the switch can cause additional distortion. By using a
patented switch construction, no amplifier part is switched on and off and hot switching
(switching within the signal current) is not required. This results in low THD values at high
output powers in best efficiency mode; see Figure 10.
a. 2
2 channel best efficiency mode
b. 4-channel best efficiency mode
Fig 8.
2
2 channel and 4 channel best efficiency mode
in-
in+
in-
in+
SWright
SWleft
Channel 3
Channel 4
Channel 1
Channel 2
001aam691
in-
in+
in-
in+
SWright
SWleft
SWright
SWleft
001aam692
SW4-channel
Channel 3
Channel 4
Channel 1
Channel 2
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