UC3846_TI 温度范围为 0°C 至 70°C 的双端 500KHz 电流模式 PWM 控制器

UC3846的基本参数

制造厂商：TI
产品类别：电源管理
技术类目：交流/直流和隔离式直流/直流开关稳压器 - PWM 控制器
功能描述：温度范围为 0°C 至 70°C 的双端 500KHz 电流模式 PWM 控制器
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UC3846的产品详情：

The UC1846/7 family of control devices provides all of the necessary features to implement fixed-frequency, current-mode control schemes while maintaining a minimum external parts count. The superior performance of this technique can be measured in improved line regulation, enhanced load response characteristics, and a simpler, easier-to-design control loop. Topological advantages include inherent pulse-by-pulse current limiting capability, automatic symmetry correction for push-pull converters, and the ability to parallel while maintaining equal current sharing. \

Protection circuitry includes built-in undervoltage lockout and programmable current limit, in addition to soft-start capability. A shutdown function is also available, which can initiate either a complete shutdown with automatic restart or latch the supply off.

Other features include fully-latched operation, double-pulse suppression, deadline adjust capability, and a ±1% trimmed band gap reference.

The UC1846 features low outputs in the OFF state, while the UCx847 features high outputs in the OFF state.

UC3846的优势和特性：

Automatic Feedforward Compensation
Programmable Pulse-by-Pulse Current Limiting
Automatic Symmetry Correction in Push-Pull Configuration
Enhanced Load Response Characteristics
Parallel Operation Capability for Modular Power Systems
Differential Current Sense Amplifier with Wide Common Mode Range
Double-Pulse Suppression
500-mA (Peak) Totem-pole Outputs
±1% Band Gap Reference
Undervoltage Lockout
Soft-Start Capability
Shutdown Terminal
500-kHz Operation

UC3846的参数（英文）：

Topology
Boost, Flyback, Forward, Half-Bridge, Push-Pull
Duty cycle (Max) (%)
50
Supply voltage (Max) (V)
40
UVLO thresholds on/off (V)
7.7/6.95
Features
Adjustable Switching Frequency, Current Limiting, Dead Time Control, Error Amplifier, Multi-topology, Soft Start, Synchronization Pin
Operating temperature range (C)
0 to 70
Rating
Catalog
Frequency (Max) (kHz)
500
Gate drive (Typ) (A)
0.5

UC3846具体的完整产品型号参数及价格（美元）：

UC3846的完整型号有：UC3846DW、UC3846DWTR、UC3846N，以下是这些产品的关键参数及官网采购报价：

UC3846DW，工作温度：0 to 70，封装：SOIC (DW)-16，包装数量MPQ：40个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网UC3846DW的批量USD价格：1.631（1000+）

UC3846DWTR，工作温度：0 to 70，封装：SOIC (DW)-16，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网UC3846DWTR的批量USD价格：1.359（1000+）

UC3846N，工作温度：0 to 70，封装：PDIP (N)-16，包装数量MPQ：25个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：NIPDAU，TI官网UC3846N的批量USD价格：1.835（1000+）

UC3846的评估套件：

UC3846的电路图解：

UC3846的评估套件：