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VNH5050ATR-E 데이터시트(PDF) 5 Page - STMicroelectronics |
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VNH5050ATR-E 데이터시트(HTML) 5 Page - STMicroelectronics |
5 / 33 page VNH5050A-E Block diagram and pin description Doc ID 16009 Rev 10 5/33 1 Block diagram and pin description Figure 1. Block diagram Table 2. Block description Name Description Logic control Allows the turn-on and the turn-off of the high-side and the low-side switches according to the truth table. Undervoltage/overvoltage Shuts down the device for battery voltage outside the range (4,5...24V). High-side and low-side clamp voltage Protect the high-side and the low-side switches from high voltage on the battery line. High-side and low-side driver Drive the gate of the concerned switch to allow a proper RDS(on) for the leg of the bridge. Current limitation Limits the motor current in case of short circuit. High-side and low-side overtemperature protection In case of short-circuit with the increase of the junction temperature, it shuts down the concerned driver to prevent degradation and to protect the die. Low-side overload detector Detects when low-side current exceeds shutdown current and latches off the concerned low-side. Fault detection Signalizes an abnormal condition of the switch (output shorted to ground or output shorted to battery) by pulling down the concerned ENx/DIAGx pin. Power limitation Limits the power dissipation of the high-side driver inside safe range in case of short to ground condition. SOURCE_HSA 1/K SIGNAL CLAMP POWER LIMITATION FAULT DETECTION OV + UV LSB_OVERTEMPERATURE HSB_OVERTEMPERATURE HSA_OVERTEMPERATURE LSA_OVERTEMPERATURE LOGIC CLAMP_LSA DRIVER HSA CLAMP_HSA CURRENT LIMITATION_A HSA DRIVER LSA LSA GNDA OVERLOAD DETECTOR_A VCC DIAGA/ENA INA CS CS_DIS PWM INB DIAGB/ENB DRIVER HSB HSB CLAMP_HSB CURRENT LIMITATION_B CLAMP_LSB LSB GNDB DRIVER LSB OVERLOAD DETECTOR_B SOURCE_HSB 1/K DRAIN_LSA DRAIN_LSB |
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