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TLE75602-ESH Datenblatt(PDF) 19 Page - Infineon Technologies AG |
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TLE75602-ESH Datenblatt(HTML) 19 Page - Infineon Technologies AG |
19 / 82 page Datasheet 19 Rev. 1.0 2017-11-23 TLE75602-ESH SPIDER+ 12V Power Supply 6 Power Supply The TLE75602-ESH is supplied by two supply voltages: • VS (analog supply voltage used also for the logic) • VDD (digital supply voltage) The VS supply line is connected to a battery feed and used, in combination with VDD supply, for the driving circuitry of the power stages. In situations where VS voltage drops below VDD voltage (for instance during cranking events down to 3.0 V), an increased current consumption may be observed at VDD pin. VS and VDD supply voltages have an undervoltage detection circuit, which prevents the activation of the associated function in case the measured voltage is below the undervoltage threshold. More in detail: • An undervoltage on both VS and VDD supply voltages prevents the activation of the power stages and any SPI communication (the SPI registers are reset) • An undervoltage on VDD supply prevents any SPI communication. SPI read/write registers are reset to default values. • An undervoltage on VS supply forces the TLE75602-ESH to drain all needed current for the logic from VDD supply. All channels are disabled, and are enabled again as soon as VS ≥ VS(OP). Figure 11 shows a basic concept drawing of the interaction between supply pins VS and VDD, the output stage drivers and SO supply line. Figure 11 TLE75602-ESH Internal Power Supply concept When 3.0 V ≤ VS ≤ VDD - VSDIFF TLE75602-ESH operates in “Cranking Operative Range” (COR). In this condition the current consumption from VDD pin increases while it decreases from VS pin where the total current consumption remains within the specified limits. Figure 12 shows the voltage levels at VS pin where the device goes in and out of COR. During the transition to and from COR operative region, IVS and IVDD change between values defined for normal operation and for COR operation. The sum of both current remains within limits specified in “Overall current consumption” section (see Table 8). CP GD S D SupplyConcept_6XS2LS.emf VS VDD IVS IVDD VREG SPI SO UVR VDD UVR VS GD GND LS |
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Ähnliche Beschreibung - TLE75602-ESH |
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