UC2824 - 高速 PWM 控制器

UC2824是TI德州仪器公司的一款PWM与谐振控制器产品，UC2824是高速 PWM 控制器，本站介绍了UC2824的封装应用图解、特点和优点、功能等，并给出了与UC2824相关的TI元器件型号供参考。

UC2824 - 高速 PWM 控制器 - PWM与谐振控制器 - 离线隔离型DC/DC控制器和转换器 - 德州仪器

产品描述

The UC1824 family of PWM control devices is optimized for high frequency switched mode power supply applications. Particular care was given to minimizing propagation delays through the comparators and logic circuitry while maximizing bandwidth and slew rate of the error amplifier. This controller is designed for use in either current mode or voltage mode systems with the capability for input voltage feed-forward.

Protection circuitry includes a current limit comparator with a 1-V threshold, a TTL compatible shutdown port, and a soft-start pin which doubles as a maximum duty cycle clamp. The logic is fully latched to provide jitter free operation and prohibit multiple pulses at an output. An under-voltage lockout section with 800 mV of hysteresis assures low start up current. During under-voltage lockout, the outputs are high impedance.

产品特性

Complementary Outputs
Practical Operation Switching Frequenciesto 1 MHz
50-ns Propagation Delay to Output
High Current Dual Totem Pole Outputs (1.5 A Peak)
Wide Bandwidth Error Amplifier
Fully Latched Logic With Double Pulse Suppression
Pulse-by-Pulse Current Limiting
Soft Start/Maximum Duty Cycle Control
Under-Voltage Lockout with Hysteresis
Low Start Up Current (1.1 mA)
Trimmed Bandgap Reference (5.1 V ± 1%)

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