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參數(shù)資料
| 型號： | UCC2977 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Multi-Topology Piezoelectric Transformer Controller |
| 中文描述： | 多拓撲壓電變壓器控制器 |
| 文件頁數(shù)： | 18/28頁 |
| 文件大?。?/td> | 433K |
| 代理商： | UCC2977 |
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SLUS499A
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NOVEMBER 2001
–
REVISED JANUARY 2002
18
www.ti.com
APPLICATION INFORMATION
half-bridge operation and inductor selection (continued)
Waveforms for the UCC3976 half-bridge circuit operated with a 12-Vdc input are shown in Figure 14. P- and
N-Channel MOSFETs are driven out of phase with 50% duty cycle producing a square wave at the drains (see
Figure15: trace 1). Inductor LRES and the PZT primary capacitance form a low-pass filter. The resulting in a
near sinusoid across the PZT primary (trace 2). Due to the high Q of the PZT, lamp voltage (trace 4) is sinusoidal.
Lamp current is sensed by the half-wave rectification circuit at RCS (trace 3). Lamp current is in phase with lamp
current since the load is primarily resistive with some capacitance due to the reflector
’
s proximity to the lamp.
The lamp reflector should be grounded for safety reasons and in order to keep the secondary capacitance
constant allowing the PZT load to be constant.
VIN = 12 Vdc
VLAMP = 600 V
Figure 14. UCC3976 Half-Bridge Waveforms
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| UCC2977EVM | 功能描述:電源管理IC開發(fā)工具 UCC2977 Eval Mod RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| UCC2977PW | 功能描述:LCD 驅(qū)動器 Multi-Topology Piezoelectric RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube |
| UCC2977PWG4 | 功能描述:LCD 驅(qū)動器 Multi-Topology Piezoelectric RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube |
| UCC2977PWR | 功能描述:LCD 驅(qū)動器 Multi-Topology Piezoelectric RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube |
| UCC2977PWRG4 | 功能描述:LCD 驅(qū)動器 Multi-Topology Piezoelectric RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube |
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