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參數(shù)資料
| 型號： | UC3867J |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Resonant-Mode Power Supply Controllers |
| 中文描述： | 諧振模式電源控制器 |
| 文件頁數(shù)： | 7/9頁 |
| 文件大小： | 438K |
| 代理商： | UC3867J |
7
UC1861-1868
UC2861-2868
UC3861-3868
Minimum oscillator frequency is set by Rmin and Cvco.
The minimum frequency is approximately given by the
equation:
43
F
R
C
MIN
MIN
VCO
Maximum oscillator frequency is set by Rmin, Range &
Cvco. The maximum frequency is approximately given by
the equation:
33
(
/ /
F
R
Range
C
MAX
MIN
VCO
)
The Error Amplifier directly controls the oscillator fre-
quency. E/A output low corresponds to minimum fre-
quency and output high corresponds to maximum
frequency. At the end of each oscillator cycle, the RC pin
is discharged to one diode drop above ground. At the be-
ginning of the oscillator cycle, V(RC) is less than Vth1
and so the output of the zero detect comparator is ig-
nored. After V(RC) exceeds Vth1, the one shot pulse will
be terminated as soon as the zero pin falls below 0.5V or
V(RC) exceeds Vth2. The minimum one shot pulse width
is approximately given by the equation:
Tpw(min)
0.3
R
C.
The maximum pulse width is approximately given by:
Tpw(max)
1.2
R
C.
APPLICATION INFORMATION
The steering logic is configured on the UC1861,63 to result in
dual non-overlapping square waves at outputs A & B. This is
suited to drive dual switch ZVS systems.
STEERING LOGIC
UDG-92013
The steering logic is configured on the UC1862,64 to result in
inverted pulse trains occurring identically at both output pins.
This is suited to drive single switch ZVS systems. Both outputs
are available to drive the same MOSFET gate. It is advisable to
join the pins with 0.5 ohm resistors.
UDG-92014
The steering logic is configured on the UC1865,67 to result in
alternating pulse trains at outputs A & B. This is suited to drive
dual switch ZCS systems.
UDG-92015
The steering logic is configured on the UC1866,68 to result in
non-inverted pulse trains occurring identically at both output
pins. This is suited to drive single switch ZCS systems. Both
outputs are available to drive the same MOSFET gate. It is ad-
visable to join the pins with 0.5 ohm resistors.
UDG-92016
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| UC3867JTR | Resonant-Mode Power Supply Controllers |
| UC3867L | Resonant-Mode Power Supply Controllers |
| UC3867LTR | Resonant-Mode Power Supply Controllers |
| UC3867NTR | Resonant-Mode Power Supply Controllers |
| UC3867QTR | Resonant-Mode Power Supply Controllers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UC3867N | 功能描述:電壓模式 PWM 控制器 Resonant-Mode RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| UC3867N | 制造商:Texas Instruments 功能描述:IC POWER SUPPLY CNTRLR 16-DIP 制造商:Texas Instruments 功能描述:IC, POWER SUPPLY CNTRLR 16-DIP 制造商:Texas Instruments 功能描述:IC, POWER SUPPLY CNTRLR 16-DIP; Primary Input Voltage:20V; Voltage Regulator Case Style:DIP; No. of Pins:16; Operating Temperature Min:0C; Operating Temperature Max:70C; SVHC:No SVHC (19-Dec-2012); Base Number:3867; ;RoHS Compliant: Yes |
| UC3867NG4 | 功能描述:電壓模式 PWM 控制器 Resonant-Mode RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| UC3868N | 功能描述:電壓模式 PWM 控制器 Resonant-Mode RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| UC3868NG4 | 功能描述:電壓模式 PWM 控制器 Resonant-Mode RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
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