UC2825A-EP_TI 增强型产品高速 Pwm 控制器

UC2825A-EP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：增强型产品高速 Pwm 控制器
点击这里打开及下载UC2825A-EP的技术文档资料
TI代理渠道，提供当日发货、严格的质量标准，满足您的目标价格

UC2825A-EP的产品详情：

The UC2825A-EP pulse width modulation (PWM) controller is an improved version of the standard UC2825. Performance enhancements have been made to several of the circuit blocks. Error amplifier gain bandwidth product is 12 MHz, while input offset voltage is 2 mV. Current-limit threshold is specified to a tolerance of 5%. Oscillator discharge current is specified at 10 mA for accurate dead-time control. Frequency accuracy is improved to 6%. Startup supply current, typically 100 µA, is ideal for off-line applications. The output drivers are redesigned to actively sink current during undervoltage lockout (UVLO) at no expense to the startup current specification. In addition, each output is capable of 2-A peak currents during transitions.

Functional improvements also have been implemented in this family. The UC2825A-EP shutdown comparator is now a high-speed overcurrent comparator with a threshold of 1.2 V. The overcurrent comparator sets a latch that ensures full discharge of the soft-start capacitor before allowing a restart. While the fault latch is set, the outputs are in the low state. In the event of continuous faults, the soft-start capacitor is fully charged before discharge to ensure that the fault frequency does not exceed the designed soft-start period. The UC2825 CLOCK pin is CLK/LEB in the UC2825A-EP. This pin combines the functions of clock output and leading-edge blanking adjustment and has been buffered for easier interfacing.

The UC2825A-EP has dual alternating outputs and the same pin configuration as UC2825. UVLO thresholds are identical to the original UC2825.

Consult the application report, The UC3823A,B and UC2825A,B Enhanced Generation of PWM Controllers, literature number SLUA125, for detailed technical and applications information.

UC2825A-EP的优势和特性：

Improved Version of the UC2825 PWM
Compatible With Voltage-Mode or Current-Mode Control Methods
Practical Operation at Switching Frequencies to 1 MHz
50-ns Propagation Delay to Output
High-Current Dual Totem-Pole Outputs (2-A Peak)
Trimmed Oscillator Discharge Current
Low 100-μA Startup Current
Pulse-by-Pulse Current-Limiting Comparator
Latched Overcurrent Comparator With Full Cycle Restart
APPLICATIONS
- Controlled Baseline
- One Assembly/Test Site
- One Fabrication Site
- Available in Military (–55°C/125°C) Temperature Range(1)
- Extended Product Life Cycle
- Extended Product-Change Notification
- Product Traceability

(1) Additional temperature ranges are available - contact factory

UC2825A-EP的参数（英文）：

Topology
Boost, Flyback, Forward, Full-Bridge, Half-Bridge, Push-Pull
Duty cycle (Max) (%)
50
Supply voltage (Max) (V)
22
UVLO thresholds on/off (V)
9.2/8.4
Features
Adjustable Switching Frequency, Current Limiting, Dead Time Control, Error Amplifier, Leading Edge Blanking, Multi-topology, Programmable Max Duty Cycle, Soft Start, Synchronization Pin
Operating temperature range (C)
-40 to 125, -55 to 125
Rating
HiRel Enhanced Product
Frequency (Max) (kHz)
1000
Gate drive (Typ) (A)
2

UC2825A-EP具体的完整产品型号参数及价格（美元）：

UC2825A-EP的完整型号有：UC2825AMDWREP、UC2825AQDWREP、V62/05616-01XE、V62/05616-02XE，以下是这些产品的关键参数及官网采购报价：

UC2825AMDWREP，工作温度：-55 to 125，封装：SOIC (DW)-16，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网UC2825AMDWREP的批量USD价格：4.136（1000+）

UC2825AQDWREP，工作温度：-40 to 125，封装：SOIC (DW)-16，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网UC2825AQDWREP的批量USD价格：3.52（1000+）

V62/05616-01XE，工作温度：-40 to 125，封装：SOIC (DW)-16，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网V62/05616-01XE的批量USD价格：3.52（1000+）

V62/05616-02XE，工作温度：-55 to 125，封装：SOIC (DW)-16，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网V62/05616-02XE的批量USD价格：4.136（1000+）

UC2825A-EP的评估套件：

UC2825A-EP的电路图解：

UC2825A-EP的评估套件：