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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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1EDI2002AS датащи(PDF) 21 Page - Infineon Technologies AG |
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1EDI2002AS датащи(HTML) 21 Page - Infineon Technologies AG |
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21 / 147 page  EiceDRIVER ™ SIL 1EDI2002AS Functional Description Datasheet 21 Rev. 3.1, 2015-07-30 Hardware Description 2.4 Functional Block Description 2.4.1 Power Supplies On the primary side, the 1EDI2002AS needs a single 5 Vsupply source V CC1 for proper operation. This makes the device compatible to most of the microcontrollers available for automotive applications. On the secondary side, the 1EDI2002AS needs two power supplies for proper operation. • The positive power supply V CC2 is typically set to 15 V (referring to VGND2). • The negative supply V EE2 is typically set to -8 V (referring to VGND2). Under- and over-voltage monitoring is performed continuously during operation of the device (see Chapter 3.3.1). A 5V supply for the digital domain on the secondary side is generated internally (present at pin VREG). 2.4.2 Clock Domains The clock system of the 1EDI2002AS is based on three oscillators defining each a clock domain: • One RC oscillator (OSC1) for the primary chip. • One RC oscillator (OSC2) for the secondary chip excepting the output stage. • One Start-Stop oscillator (SSOSC2) for the output stage on the secondary side. The two RC oscillators are running constantly. They are also monitored constantly, and large deviations from the nominal frequency are identified as a system failure (Event Class B, see Chapter 3.3.2.2). The Start Stop oscillator is controlled by the PWM command. |
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