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BTS780GP Datasheet(PDF) 7 Page - Infineon Technologies AG |
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BTS780GP Datasheet(HTML) 7 Page - Infineon Technologies AG |
7 / 18 page BTS 780 GP Data Sheet 7 1999-06-22 2.5 Under-Voltage-Lockout (UVLO) When V S reaches the switch-on voltage VUV ON the IC becomes active with a hysteresis. The High-Side output transistors are switched off if the supply voltage V S drops below the switch off value V UV OFF. 2.6 Over-Voltage-Lockout (OVLO) When V S reaches the switch-off voltage VOV OFF the High-Side output transistors are switched off with a hysteresis. The IC becomes active if the supply voltage V S drops below the switch-on value V OV ON. 2.7 Open Load Detection Open load is detected by current measurement in the High-Side switches during ON- condition. If the output current drops below an internally fixed level (open circuit detection current) the error flag is set with a delay. 2.8 Status Flag The status flag outputs are open drain outputs with Zener-diodes which require pull-up resistors, c.f. the application circuit on Page 16. Various errors as listed in the table “Diagnosis” are detected by switching the open drain outputs ST1 or ST2 to low. |
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