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UC2865QTR PDF预览

UC2865QTR

更新时间： 2024-11-23 03:04:27
品牌 Logo 应用领域
德州仪器 - TI 稳压器开关式稳压器或控制器电源电路开关式控制器
页数 文件大小 规格书
9页 428K
描述
Resonant-Mode Power Supply Controllers

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中文翻译

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UC2865QTR 技术参数

生命周期：Obsolete零件包装代码：QLCC
包装说明：PLASTIC, LCC-20针数：20
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.68
Is Samacsys：N模拟集成电路 - 其他类型：SWITCHING CONTROLLER
控制模式：CURRENT-MODE控制技术：RESONANT CONTROL
最大输入电压：20 V最小输入电压：12 V
标称输入电压：12 VJESD-30 代码：S-PQCC-J20
长度：8.965 mm功能数量：1
端子数量：20最高工作温度：85 °C
最低工作温度：-25 °C最大输出电流：1 A
封装主体材料：PLASTIC/EPOXY封装代码：QCCJ
封装形状：SQUARE封装形式：CHIP CARRIER
认证状态：Not Qualified座面最大高度：4.57 mm
表面贴装：YES切换器配置：PUSH-PULL
最大切换频率：1000 kHz温度等级：OTHER
端子形式：J BEND端子节距：1.27 mm
端子位置：QUAD宽度：8.965 mm
Base Number Matches：1

UC2865QTR 数据手册

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application  
INFO  
UC1861-1868  
UC2861-2868  
UC3861-3868  
available  
Resonant-Mode Power Supply Controllers  
FEATURES  
DESCRIPTION  
• Controls Zero Current Switched (ZCS) The UC1861-1868 family of ICs is optimized for the control of Zero Current  
or Zero Voltage Switched (ZVS)  
Quasi-Resonant Converters  
Switched and Zero Voltage Switched quasi-resonant converters. Differ-  
ences between members of this device family result from the various com-  
binations of UVLO thresholds and output options. Additionally, the  
one-shot pulse steering logic is configured to program either on-time for  
ZCS systems (UC1865-1868), or off-time for ZVS applications (UC1861-  
1864).  
• Zero-Crossing Terminated One-Shot  
Timer  
• Precision 1%, Soft-Started 5V  
Reference  
The primary control blocks implemented include an error amplifier to com-  
pensate the overall system loop and to drive a voltage controlled oscillator  
(VCO), featuring programmable minimum and maximum frequencies. Trig-  
gered by the VCO, the one-shot generates pulses of a programmed maxi-  
mum width, which can be modulated by the Zero Detection comparator.  
This circuit facilitates “true” zero current or voltage switching over various  
line, load, and temperature changes, and is also able to accommodate the  
resonant components' initial tolerances.  
• Programmable Restart Delay  
Following Fault  
• Voltage-Controlled Oscillator (VCO)  
with Programmable Minimum and  
Maximum Frequencies from 10kHz to  
1MHz  
• Low Start-Up Current (150µA typical)  
• Dual 1 Amp Peak FET Drivers  
Under-Voltage Lockout is incorporated to facilitate safe starts upon  
power-up. The supply current during the under-voltage lockout period is  
typically less than 150µA, and the outputs are actively forced to the low  
• UVLO Option for Off-Line or DC/DC  
Applications  
state.  
(continued)  
Device  
UVLO  
Outputs  
“Fixed”  
1861  
1862  
1863  
36014  
1864  
36014  
1865  
1866  
1867  
36014  
1868  
36014  
16.5/10.5  
Alternating  
Off Time  
16.5/10.5  
Parallel  
Off Time  
16.5/10.5  
Alternating  
On Time  
16.5/10.5  
Parallel  
On Time  
Alternating  
Off Time  
Parallel  
Off Time  
Alternating  
On Time  
Parallel  
On Time  
BLOCK DIAGRAM  
UDG-92018  
Pin numbers refer to the J and N packages.  
SLUS289 - OCTOBER 1998  
1234567...9

中文翻译

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