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UC2827QTR-1

更新时间： 2024-02-16 20:37:18
品牌 Logo 应用领域
其他 - ETC 开关控制器
页数 文件大小 规格书
7页 117K
描述
Current/Voltage-Mode SMPS Controller

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中文翻译

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UC2827QTR-1 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
包装说明：PLASTIC, LCC-28Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.9Is Samacsys：N
其他特性：CAN ALSO WORK IN CURRENT MODE模拟集成电路 - 其他类型：SWITCHING CONTROLLER
控制模式：VOLTAGE-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：20 V最小输入电压：8.3 V
标称输入电压：15 VJESD-30 代码：S-PQCC-J28
长度：11.505 mm功能数量：1
端子数量：28最高工作温度：85 °C
最低工作温度：-40 °C最大输出电流：1 A
封装主体材料：PLASTIC/EPOXY封装代码：QCCJ
封装等效代码：LDCC28,.5SQ封装形状：SQUARE
封装形式：CHIP CARRIER峰值回流温度（摄氏度）：NOT SPECIFIED
认证状态：Not Qualified座面最大高度：4.57 mm
子类别：Switching Regulator or Controllers表面贴装：YES
切换器配置：PUSH-PULL最大切换频率：500 kHz
技术：BIPOLAR温度等级：INDUSTRIAL
端子形式：J BEND端子节距：1.27 mm
端子位置：QUAD处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：11.505 mmBase Number Matches：1

UC2827QTR-1 数据手册

 浏览型号UC2827QTR-1的Datasheet PDF文件第2页浏览型号UC2827QTR-1的Datasheet PDF文件第3页浏览型号UC2827QTR-1的Datasheet PDF文件第4页浏览型号UC2827QTR-1的Datasheet PDF文件第5页浏览型号UC2827QTR-1的Datasheet PDF文件第6页浏览型号UC2827QTR-1的Datasheet PDF文件第7页 
UC1827-1/-2  
UC2827-1/-2  
UC3827-1/-2  
Buck Current/Voltage Fed Push-Pull PWM Controllers  
FEATURES  
DESCRIPTION  
• Ideal for Multiple Output and/or High  
Voltage Output Voltage Converters  
The UC3827 family of controller ICs provides an integrated control solution  
for cascaded buck and push-pull converters. These converters are known  
as current fed or voltage fed push-pull converters and are ideally suited for  
multiple output and/or high voltage output applications. In both current fed  
and voltage fed modes, the push-pull switches are driven at 50% nominal  
duty cycles and at one half the switching frequency of the buck stage. In  
the current fed mode, the two switches are driven with a guaranteed over-  
lap period to prevent ringing and voltage stress on the devices. In the volt-  
age fed mode, the two switches are driven with a guaranteed gap time  
between the switches to prevent shorting the transformer across the en-  
ergy storage capacitor and to prohibit excessive currents flowing through  
the devices.  
• Up to 500kHz Operation  
• High Voltage, High Current Floating  
Driver for Buck Converter Stage  
• UC3827-1 Current Fed Controller has  
Push-Pull Drivers with Overlapping  
Conduction Periods  
• UC3827-2 Voltage Fed Controller has  
Push-Pull Drivers with  
Non-overlapping Conduction Periods  
The converter’s output voltage is regulated by pulse width modulation of  
the buck switch. The UC3827 contains complete protection and PWM con-  
trol functions for the buck converter. Easy control of the floating switch is  
accomplished by the floating drive circuitry. The gate drive waveform is  
level shifted to support an input voltage up to 72Vdc.  
• Average Current Mode, Peak Current  
Mode or Voltage Mode with Input  
Voltage Feedforward Control for Buck  
Power Stage  
• Wide Bandwidth, Low Offset,  
Differential Current Sense Amplifier  
(continued)  
• Precise Short Circuit Current Control  
BLOCK DIAGRAM  
VEAO  
10  
CEA+  
12  
CEAO  
6
RAMP  
5
VOLTAGE ERROR  
AMPLIFIER  
VEA+ 14  
VEA– 16  
CEA– 13  
CURRENT  
ERROR  
AMPLIFIER  
0.7V  
PWM  
R
S
COMPARATOR  
CSAO  
CSA+  
CSA–  
SS  
7
8
9
4
D
FLYING  
DRIVER  
1
2
3
V+  
+3V  
Q
ILIM  
COMPARATOR  
BUCK  
SRC  
CURRENT  
SENSE AMPLIFIER  
SS  
OSC  
INHBT  
UV  
SYNC 19  
CT 18  
21 PGND  
OSC  
Q
T
DELAY  
500kHz  
MAX  
PUSH-PULL  
DRIVERS  
RT 17  
Q
REF 15  
VCC 23  
24 PUSH  
22 PULL  
REF  
&
UVLO  
UVLO  
DELAY  
GND 11  
20  
UDG-97172  
DELAY  
04/99  
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