搜索结果：TL494

TL494是一种用于PWM开关调节器控制电路的半导体器件。它包括5V参考电压电路、两个误差放大器、触发器、输出控制电路、PWM比较器、死区时间比较器和振荡器。该器件可以在1KHz到300KHz的开关频率下工作,适用于推挽式或单端操作。

PWM控制器：40V、电压模式的PWM控制器；双通道输出控制；拓扑结构：正激，全桥，半桥；开关频率：300kHz；最大占空比：45%；满足用户（至少工业级）自主可控的需求。

The TL494 device incorporates all the functions required in the construction of a pulse-width-modulation (PWM) control circuit on a single chip. Designed primarily for power-supply control, this device offers the flexibility to tailor the power-supply control circuitry to a specific application. The TL494 device contains two error amplifiers, an on-chip adjustable oscillator, a dead-time control (DTC) comparator, a pulse-steering control flip-flop, a 5-V, 5%-precision regulator, and output-control circuits. The error amplifiers exhibit a common-mode voltage range from –0.3 V to V CC – 2 V. The dead-time control comparator has a fixed offset that provides approximately 5% dead time. The on-chip oscillator can be bypassed by terminating RT to the reference output and providing a sawtooth input to CT, or it can drive the common circuits in synchronous multiple-rail power supplies. The uncommitted output transistors provide either common-emitter or emitter-follower output capability. The TL494 device provides for push-pull or single-ended output operation, which can be selected through the output-control function. The architecture of this device prohibits the possibility of either output being pulsed twice during push-pull operation. The TL494 device is characterized for operation from 0°C to 70°C. The TL494I device is characterized for operation from –40°C to 85°C.

开关式脉冲宽度调控电路，主要用于开关式电源控制

TL494 是一种频率固定的脉冲宽度控制器，主要为开关电源控制器而设计。

TL494 — 开关式脉冲宽度调控（芯伯乐 XBLW 国产替代）

IC REG CTRLR BCK/PSH-PULL 16SOIC

IC REG CTRLR BCK/PUSH-PULL 16DIP

IC REG CTRLR MULT TOP 16SOIC

IC REG CTRLR BCK/PUSH-PULL 16DIP

IC REG CTRLR MULT TOPOLOGY 16DIP

IC REG CTRLR BCK/PSH-PULL 16SOIC

IC REG CTRLR BCK/PSH-PULL 16SOIC

IC REG CTRLR MULT TOP 16SOIC

IC REG CTRLR BCK/PUSH-PULL 16DIP

IC REG CTRLR MULT TOP 16SOIC