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https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1062260/ucc27714-how-to-caculate-the-peak-output-sink-and-source-current-using-output-pull-up-and-pull-down-resistor-rlol-rhol-rloh-rhoh
你(们)好
如何使用输出上拉和下拉电阻器 RLOL、RHOL、RLOH、RHOH 来计算峰值输出灌电流和拉电流？
您好！
峰值驱动电流由内部器件尺寸和来自前置驱动器级的驱动电压决定、而不仅仅取决于驱动器器件的导通电阻。 下拉电阻的最大值为1.45欧姆、N 沟道和 P 沟道上拉电阻的上拉电阻通常为下拉电阻的~1.5倍。
在15V VDD 和1.45欧姆下拉的情况下、这将导致超过10A 的下拉电流、但由于器件驱动电压和增益参数、器件峰值电流限制在低于该值。
峰值电流无法仅根据导通电阻确定。
此致、
