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參數(shù)資料
| 型號： | UC3878L |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Phase Shift Resonant Controller |
| 中文描述： | 相移諧振控制器 |
| 文件頁數(shù)： | 9/19頁 |
| 文件大小： | 721K |
| 代理商： | UC3878L |
9
UC1875/6/7/8
UC2875/6/7/8
UC3875/6/7/8
In each of the output stages, transistors Q3 through Q6
form a high-speed totem-pole driver which will source
or sink more than one amp peak with a total delay of
approximately 30 nanoseconds. To ensure a low output
level prior to turn-on, transistors Q7 through Q9 form a
self-biased driver to hold Q6 on prior to the supply
reaching its turn-on threshold. This circuit is operable
when the chip supply is zero. Q6 is also turned on and
held low with a signal from the fault logic portion of the
chip.
APPLICATION INFORMATION (cont.)
Delay Blocks And Output Stages
The delay providing the dead-time is accomplished with
C1 which must discharge to V
TH
before the output can
go high. The time is defined by the current sources, I1,
which is programmed by an external resistor, R
TD
. The
voltage on the Delay Set pins is internally regulated to
2.5V and the range of dead time control is
from 50 to 200 nanoseconds. NOTE: There is no way
to disable the delay circuitry, and the delay time must
be programmed.
The four outputs of the UC1875/6/7/8 interface to the full bridge converter switches as shown below:
Output Switch Orientation
UDG-95083
UDG-95082
3 Winding Bifilar, AWG 30 Kynar Insulation
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UC3879DW | 功能描述:軟開關(guān) PWM 控制器 Phase Shift Resonant Controller RoHS:否 制造商:Fairchild Semiconductor 輸出端數(shù)量: 輸出電流: 開關(guān)頻率: 工作電源電壓:30 V 電源電流: 最大工作溫度:+ 105 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
| UC3879DWG4 | 功能描述:軟開關(guān) PWM 控制器 Phase Shift Resonant Controller RoHS:否 制造商:Fairchild Semiconductor 輸出端數(shù)量: 輸出電流: 開關(guān)頻率: 工作電源電壓:30 V 電源電流: 最大工作溫度:+ 105 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
| UC3879DWTR | 功能描述:軟開關(guān) PWM 控制器 Phase Shift Resonant Controller RoHS:否 制造商:Fairchild Semiconductor 輸出端數(shù)量: 輸出電流: 開關(guān)頻率: 工作電源電壓:30 V 電源電流: 最大工作溫度:+ 105 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
| UC3879DWTRG4 | 功能描述:軟開關(guān) PWM 控制器 Phase Shift Resonant Controller RoHS:否 制造商:Fairchild Semiconductor 輸出端數(shù)量: 輸出電流: 開關(guān)頻率: 工作電源電壓:30 V 電源電流: 最大工作溫度:+ 105 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
| UC3879J | 制造商:Texas Instruments 功能描述: |
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