1 / 3

Vbat = 12V, load current = 25mA

Voltage on CLP increasing with load current if it is floating . Vbat = 12V, load current = 25mA. Power off behavior. During power off residual voltage on CLP and Cboot1. All other pins have no residual voltage . Bench test conclusion.

yank
Download Presentation

Vbat = 12V, load current = 25mA

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Voltage on CLP increasing with load current if it is floating Vbat = 12V, load current = 25mA

  2. Power off behavior During power off residual voltage on CLP and Cboot1. All other pins have no residual voltage

  3. Bench test conclusion • CLP has internal pull up circuit so device can operate in low power mode and PWM mode depends on load current • Floating CLP voltage is not because of crosstalk • CLP voltage can increase to 5V steady in PWM mode • During power down and before device turning off boost circuit is active • When device is off so Q3 transistor Cboot1 keeps residual voltage (see scope picture) • It seems the same amount of residual voltage in on CLP

More Related