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參數(shù)資料
| 型號： | UC3827 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Buck Current/Voltage Fed Push-Pull PWM Controllers |
| 中文描述： | 降壓電流/電壓美聯(lián)儲推挽式PWM控制器 |
| 文件頁數(shù)： | 2/15頁 |
| 文件大?。?/td> | 283K |
| 代理商： | UC3827 |
www.ti.com
DESCRIPTION (CONTINUED)
The UC3827 can be set up in traditional voltage mode control using input voltage feedforward technique or in
current mode control. Using current mode control prevents potential core saturation of the push-pull transformer
due to mismatches in timing and in component tolerances. With average current mode control, precise control of
the inductor current feeding the push-pull stage is possible without the noise sensitivity associated with peak
current mode control. The UC3827 average current mode loop can also be connected in parallel with the voltage
regulation loop to assist only in fault conditions.
DISSIPATION RATINGS
UC1827-1, UC1827-2
UC2827-1, UC2827-2
UC3827-1, UC3827-2
SLUS365A–APRIL 1999–REVISED AUGUST 2005
Other valuable features of the UC3827 include bidirectional synchronization capability, user programmable
overlap time (UC3827-1), user programmable gap time (UC3827-2), a high bandwidth differential current sense
amplifier, and soft start circuitry.
ORDERING INFORMATION
(1)
PACKAGES
PDIP-24
UC1827J-1
UC1827J-2
UC2827N-1
UC2827N-2
UC3827N-1
UC3827N-2
T
A
= T
J
PUSH-PULL TOPOLOGY
SOIC-24
UC1827J-1
UC1827J-2
UC2827DW-1
UC2827DW-2
UC3827DW-1
UC3827DW-2
PLCC-28
Current Fed
Voltage Fed
Current Fed
Voltage Fed
Current Fed
Voltage Fed
-55°C to 125°C
-
-
UC3827Q-1
-
0°C to 70°C
(1)
The DW and Q packages are also available taped and reeled. Add a TR suffix to the device type (i.e., UC2827DWTR-1).
PACKAGE
(
θ
JA
) JUNCTION-TO-AMBIENT
TEMPERATURE (°C/W)
60
(1)
70 to 90
71 to 83
(3)
40-65
(1)
(
θ
JC
) JUNCTION-TO-WHAT
TEMPERATURE (°C/W)
30
28
(2)
24
(3)
30
24-pin (N)
24-pin (J)
28-pin (DW)
28-pin (QLCC)
(1)
Specified
θ
(junction-to-ambient) refers to devices mounted to 5-in
2
FR4 PC board with 1 oz. copper where noted. When a resistance
range is given, the lower values refer to a 5-in
2
aluminum PC board. The test PWB is 0.062 inches thick and typically used 0.635 mm
trace widths for power packages and 1.3 mm trace widths for non-power packages with a 100 × 100 mil probe land area at the end of
each trace.
Specified
θ
(junction-to-what) data values stated were derived from MIL-STD-1835B which states "
The baseline values shown are
worst case (mean + 2s) for a 60 x 60 mil microcircuit device silicon die and applicable for devices with die sizes up to 14400 mils
2
. For
device sizes greater than 14400 mils
2
use the following values; dual-in-line, 11 °C/W; flat pack, 10 °C/W; pin grid array, 10 °C/W pin grid
array, 10 °C/W
."
Modeled data. If there is a value range given for
θ
, the lower value refers to a 3 x 3 in., 1-oz, internal copper ground plane. The higher
value refers to a 1 x 1 in. ground plane. All model data assumes only one trace for each non-fused lead.
(2)
(3)
2
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UC2845AJ | OMNIFET II: FULLY AUTOPROTECTED POWER MOSFET |
| UC2845AQTR | OMNIFET II: FULLY AUTOPROTECTED POWER MOSFET |
| UC285-x | FAST TRANSIENT REPONSE 5-A LOW-DROPOUT REGULATOR |
| UC281N | DOUBLE CHANNEL HIGH SIDE SMART POWER SOLID STATE RELAY |
| UC282DW | DOUBLE CHANNEL HIGH SIDE DRIVER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UC3827-1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Buck Current/Voltage Fed Push-Pull PWM Controllers |
| UC3827-2 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Buck Current/Voltage Fed Push-Pull PWM Controllers |
| UC3827DW-1 | 功能描述:電流型 PWM 控制器 Buck Current/Voltage Fed Push-Pull RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| UC3827DW-1G4 | 功能描述:電流型 PWM 控制器 Buck Current/Voltage Fed Push-Pull RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| UC3827DW-2 | 功能描述:電流型 PWM 控制器 Buck Current/Voltage Fed Push-Pull RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
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