TW200943726A - Signal modulation device and control method thereof - Google Patents
Signal modulation device and control method thereofInfo
- Publication number
- TW200943726A TW200943726A TW97112963A TW97112963A TW200943726A TW 200943726 A TW200943726 A TW 200943726A TW 97112963 A TW97112963 A TW 97112963A TW 97112963 A TW97112963 A TW 97112963A TW 200943726 A TW200943726 A TW 200943726A
- Authority
- TW
- Taiwan
- Prior art keywords
- module
- pwm
- signal
- switch
- feedback
- Prior art date
Links
Landscapes
- Dc-Dc Converters (AREA)
- Amplifiers (AREA)
Abstract
A signal modulation device includes a pulse width modulation (PWM) module, a control module, a switch module and a feedback module. The PWM module receives a data signal and generates a first PWM signal and a second PWM signal in accordance with the data signal and a feedback signal. The control module is electrically connected to the PWM module and generates a first and a second switch control signals in accordance with the first and the second PWM signals. The switch module is electrically connected to the control module and outputs a driving signal, in accordance with the first and the second switch control signals, for driving a load. The feedback module is electrically connected to the PWM module, the control module and the switch module. The feedback module generates a feedback signal to the PWM module in accordance with a switch state of the switch module.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW97112963A TW200943726A (en) | 2008-04-10 | 2008-04-10 | Signal modulation device and control method thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW97112963A TW200943726A (en) | 2008-04-10 | 2008-04-10 | Signal modulation device and control method thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
TW200943726A true TW200943726A (en) | 2009-10-16 |
Family
ID=44869092
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW97112963A TW200943726A (en) | 2008-04-10 | 2008-04-10 | Signal modulation device and control method thereof |
Country Status (1)
Country | Link |
---|---|
TW (1) | TW200943726A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI407687B (en) * | 2010-05-25 | 2013-09-01 | Elite Semiconductor Esmt | Method for switching an audio amplifier between ternary modulation and quaternary modulation |
TWI584579B (en) * | 2015-04-24 | 2017-05-21 | 晶豪科技股份有限公司 | Modulation selecting circuit of audio amplifier and method thereof |
CN107306117A (en) * | 2016-04-22 | 2017-10-31 | 晶豪科技股份有限公司 | Quaternary/ternary modulation selection circuit |
-
2008
- 2008-04-10 TW TW97112963A patent/TW200943726A/en unknown
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI407687B (en) * | 2010-05-25 | 2013-09-01 | Elite Semiconductor Esmt | Method for switching an audio amplifier between ternary modulation and quaternary modulation |
TWI584579B (en) * | 2015-04-24 | 2017-05-21 | 晶豪科技股份有限公司 | Modulation selecting circuit of audio amplifier and method thereof |
CN107306117A (en) * | 2016-04-22 | 2017-10-31 | 晶豪科技股份有限公司 | Quaternary/ternary modulation selection circuit |
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