VNF1048F datasheet(40/52 Pages) STMICROELECTRONICS

部件名	VNF1048F

功能描述	High-side switch Controller with intelligent fuse protection for 12 V, 24 V and 48 V automotive applications

PDF	52 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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40 / 52 page

Operating modes

7.1

State Diagram

Figure 15. State diagram

7.2

PowerON mode

The PowerON mode is the device reset state at VS power on, due to device Start-up or Power-on Reset

conditions. At PowerON, the registers are loaded with the default values and the RSTB is set to 1.

External FET, BYPASS switch and Charge Pump are in OFF state.

7.3

Stand-by mode

In Stand-by mode, the device is in quiescent power consumption and operates under the following conditions:

•

High current path through External FETs is off

•

Protections for the external FETs are disabled

•

All diagnostics are disabled, but BYPASS switch saturation is monitored, if BYPASS switch is in ON state

during Stand-by mode, in order to detect potential de-saturation

•

Low-Current Bypass can be ON or OFF according to ‘BYPASSCTL’ bit

•

Device is self-protected

•

Charge Pump is OFF

The Standby mode characteristics are:

VNF1048F

Operating modes

DS13084 - Rev 6

page 40/52

VNF1048F 数据表(PDF) 40 Page - STMicroelectronics