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STPM098C 数据表(PDF) 18 Page - STMicroelectronics |
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STPM098C 数据表(HTML) 18 Page - STMicroelectronics |
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18 / 110 page  3.1.3.2 VREF2 thermal-overload monitor VREF2 load level is monitored by means of dedicated OT (overtemperature) diagnosis. Hysteresis on thresholds and filtering time are implemented. If Tj (output stage) ≥ VREF2_ot_th occurs for an interval longer than T_ vref2_ot_flt, VREF2_EN is asserted low and the VREF2 regulator is disabled. The VREF2 regulator remains disabled until the failure condition is removed. Table 13. VREF2 thermal-overload monitor electrical characteristics Symbol Parameter Test condition Min Typ Max Unit Notes VREF2_ot_th VREF2 overtemperature threshold 175 190 215 C° Comparator output low to high VREF2_ot_hys VREF2 overtemperature hysteresis 3 5 7 C° - T_vref2_ot_flt VREF2 overtemperature detection filter time 1 3 5 μs Analog filter Figure 12. VREF2 thermal-overload behavior t Tj VREF2_EN (Internal Signal) Thermal Shutdown VREF2_OT_TH VREF2_OT_HYST TVREF2_OT_flt Operative Operative TVREF2_OT_flt STPM098C Functional description DS14440 - Rev 1 page 18/110 |
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