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Revision 17920-001-10a

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AS8220A

Contents

1 General Description ...............................................................................................................................1

2 Key Features ...........................................................................................................................................1

3 Applications ............................................................................................................................................1

4 Pin Assignments ....................................................................................................................................4

4.1 Pin Descriptions ................................................................................................................................................4

5 Absolute Maximum Ratings ..................................................................................................................5

6 Electrical Characteristics.......................................................................................................................6

7 Typical Operating Characteristics ...................................................................................................... 11

8 Detailed Description .............................................................................................................................12

8.1 Block Description.............................................................................................................................................12

8.2 Events..............................................................................................................................................................12

8.3 Operating Modes.............................................................................................................................................12

8.3.1 NORMAL mode.....................................................................................................................................13

8.3.2 STANDBY mode ...................................................................................................................................13

8.4 Non Operating Mode .......................................................................................................................................13

8.4.1 Power Off .............................................................................................................................................13

8.5 Undervoltage Events .......................................................................................................................................13

8.6 Power On/Off Events.......................................................................................................................................14

8.7 System Description .........................................................................................................................................14

8.8 Fail Silent Behavior .........................................................................................................................................15

8.8.1 State transitions due to under voltage detection ...................................................................................15

8.8.2 State transitions due to voltage recovery detection ..............................................................................15

8.9 Mode Transitions .............................................................................................................................................15

8.9.1 ERRN Signalling ...................................................................................................................................16

8.10 Loss of ground...............................................................................................................................................16

8.11 Error Flags Description ..................................................................................................................................16

8.11.1 Bus error .............................................................................................................................................16

8.11.2 Low current on BP high side driver .....................................................................................................16

8.11.3 Low current on BP low side driver.......................................................................................................16

8.11.4 Low current on BM high side driver.....................................................................................................16

8.11.5 Low current on BM low side driver ......................................................................................................16

8.11.6 High current on BP high side driver ....................................................................................................16

8.11.7 High current on BP low side driver ......................................................................................................16

8.11.8 High current on BM high side driver....................................................................................................17

8.11.9 High current on BM low side driver .....................................................................................................17

8.11.10 BP open line......................................................................................................................................17

8.11.11 BM open line .....................................................................................................................................17

8.11.12 BP short circuit to VCC.......................................................................................................................17

8.11.13 BP short circuit to GND .....................................................................................................................17

8.11.15 BM short circuit to GND ....................................................................................................................17

8.11.16 Short circuit between BP and BM .....................................................................................................17

8.11.17 Over temperature ..............................................................................................................................17