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L99DZ320 データシート(PDF) 72 Page - STMicroelectronics |
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L99DZ320 データシート(HTML) 72 Page - STMicroelectronics |
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72 / 146 page  Figure 32. Half bridge GSHx slope VDSHxrSW VDSHx Current controlled controlled controlled Current VDSHxfSW Low-resistive switch VGSHx t t 3.26 Resistive low The resistive output mode protects the device and the H-bridge in the standby mode and in some failure modes (thermal shutdown (TSD), charge pump low (CP_LOW, see also undervoltage setting described in Section 3.12.1: VS supply failure) and stuck at ‘1’ at DI pin). When a gate driver changes into the resistive output mode due to a failure a sequence is started. In this sequence the concerning driver is switched into sink condition for 32 μs to 64 μs to ensure a fast switch off of the H-bridge transistor. If slew rate control is enabled, the sink condition is slew rate controlled. Afterwards the driver is switched into the resistive output mode (resistive path to source). L99DZ320 Functional description DS14235 - Rev 5 page 72/146 |
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