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參數資料
| 型號： | Q67000-A9310-A702 |
| 廠商： | SIEMENS AG |
| 英文描述： | High Performance Power Combi Controller |
| 中文描述： | 高性能功率Combi機控制器 |
| 文件頁數： | 2/39頁 |
| 文件大小： | 472K |
| 代理商： | Q67000-A9310-A702 |
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TDA 16888
Semiconductor Group
2
Data Sheet 1998-05-06
Special Features
– High power factor
– Typical 50
μ
A start-up supply current
– Low quiescent current (15 mA)
– Undervoltage lockout with internal stand-by operation
– Internally synchronized fixed operating frequency ranging from 15 kHz to 200 kHz
– External synchronization possible
– Shutdown of both outputs externally triggerable
– Peak current limitation
– Overvoltage protection
– Average current sensing by noise filtering
1.2
General Remarks
The TDA 16888 comprises the complete control for power factor controlled switched
mode power supplies. With its PFC and PWM section being internally synchronized, it
applies for off-line converters with input voltages ranging from 90 V to 270 V.
While the preferred topologies of the PFC preconverter are boost or flyback, the PWM
section can be designed as forward or flyback converter. In order to achieve minimal line
current gaps the maximum duty cycle of the PFC is about 94%. The maximum duty cycle
of the PWM, however, is limited to 50% to prevent transformer saturation.
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