LM5025: LM5025

您好

TI CHEN 说：

LM5025做降压电路，采用LM5113半桥驱动GaN。OUT_A和OUT_B的PWM脉冲的电压是多少

7.3.1 Input and Output The input pins of the LM5113-Q1 are independently controlled with TTL input thresholds and can withstand voltages up to 12 V regardless of the VDD voltage. This allows the inputs to be directly connected to the outputs of an analog PWM controller with up to 12-V power supply, eliminating the need for a buffer stage The output pulldown and pullup resistance of LM5113-Q1 is optimized for enhancement mode GaN FETs to achieve high frequency and efficient operation. The 0.6-Ω pulldown resistance provides a robust low impedance turnoff path necessary to eliminate undesired turnon induced by high dv/dt or high di/dt. The 2.1-Ω pullup resistance helps reduce the ringing and over-shoot of the switch node voltage. The split outputs of the LM5113- Q1 offer flexibility to adjust the turnon and turnoff speed by independently adding additional impedance in either the turnon path, the turnoff path, or both. If the input signal for either of the two channels, HI or LI, is not used, the control pin must be tied to either VDD or VSS. These inputs must not be left floating.

请您参考datasheet中的说明。

TI CHEN 说：

幅度大于5V，对LM5113的输入有影响吗？

根据datasheet的电气特性表，电压范围如上。

TI CHEN 说：

如果做不隔离升压电路呢，二个如何器件如何连接，有图吗？谢谢！

感谢您的信任，官方没有具体的参考设计，请您根据您的具体情况做相关设计。