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AN4370 数据表(PDF) 21 Page - STMicroelectronics |
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AN4370 数据表(HTML) 21 Page - STMicroelectronics |
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21 / 23 page  DocID025336 Rev 1 21/23 AN4370 External components 22 Figure 11. Reverse battery current flow through the device GAPG0810131116CFT L99ASC03 SDI SDO CSN SCK IH1 IL1 Gate Driver HS Gate Driver LS x 3 Control Diagnosis Control Diagnosis GH1 SH1 GL1 CSI+ CSI- CSO Programmable Gain & Shutdown AGND CP1+ CP1- CP2+ CP2- CP Central 2 Step Charge Pump EMC optimized „Spread Spectrum“ VCP VCP Programmable VDSTH & tDead GH2 SH2 GL2 SL1 DIS Undervoltage Overvoltage Det. VSMS VBAT VS VBAT VSMS SL2 SL3 GL3 SH3 GH3 BLDC Motor IH2 IL2 IH3 IL3 Temperature Prewarning & Temperature Shutdown T Juntion VS Monitoring NRES VSREG CSA x 3 RSense INH Ignition / Klemme 15 + - STM8A VDD VDD 100k VSREG 20k 20k SGND2 DAC BEMF Detection AOUT AMUX 5V Voltage Regulator (and Reset) BEMFOUT DOUT Control Logic Wake up From Sleep mode MOSFET Control SPI Interface Window Watchdog FS_FLAG DMUX SGND1 SGND3 CCP1 220nF CCP2 220nF CTANK 1μF CVS 100nF CVSREG 100nF RINH 10kΩ Note: This is a very simplified example of an application circuit. The function must be verified in the real application. The external componant values should be used as guidline only. RCP 100kΩ R 100kΩ * Size according application requirements (Voltage dropout test, warm cranking, …) C * BC C * VS NINT CINH 100nF VBAT VBAT |
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