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UM1693 Datasheet(PDF) 11 Page - STMicroelectronics |
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UM1693 Datasheet(HTML) 11 Page - STMicroelectronics |
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11 / 196 page  DocID025505 Rev 1 11/196 UM1693 General items 195 1 General items 1.1 Overview about M0-7 standard high-side drivers The M0-7 standard high-side drivers are manufactured using STMicroelectronics® proprietary VIPower® technology. The devices are designed to drive 12 V automotive resistive as well as inductive and capacitive loads connected to ground. A 3.3 V and 5 V CMOS-compatible interface to a microcontroller unit is provided. The products feature a very low quiescent current to preserve battery charge during standby mode. Undervoltage shutdown acts below 4 V in order to ensure the loads are driven when charge pump can deliver sufficient power. Overvoltage clamp structure protects the devices effectively from “ISO 7637-2:2004(E)” pulses (with the exception of load dump pulses, unclamped or clamped above 40 V). At loss of ground the outputs are safely turned-off, current injected into the outputs is less than 2 mA. At loss of VCC the outputs are also safely turned-off, but special care must be taken when inductive loads are driven, since additional external protection is required to absorb the demagnetization energy (refer to Chapter 6: Load compatibility). Reverse battery protection is provided in conjunction with external components for monolithic standard high-side drivers, whilst hybrid high-side drivers are reverse battery protected by self turn-on of output channels without the need of external components (refer to Chapter 2: Reverse battery protection). Note that no protection features are operating under reverse battery conditions. M0-7 standard high-side drivers integrate advanced protective functions such as load current limitation, overload active management by power limitation and overtemperature shutdown with configurable latch-off. A FaultRST pin unlatches the output in case of fault or disables the latch-off functionality. A dedicated multifunction multiplexed analog output pin delivers sophisticated diagnostic functions including: • Proportional load current sense • Supply voltage feedback • Chip temperature sense • Detection of overload • Short circuit to ground • Short to VCC and • Off-state open-load A SenseEnable pin allows off-state diagnosis to be disabled when it is needed to send the module in low power mode. Moreover, thanks to the sense enable functionality, it is possible to share one common external sense resistor among several devices and so to manage a MultiSense diagnostic bus. |
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