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BTS50020-1TAD データシート(PDF) 20 Page - Infineon Technologies AG |
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BTS50020-1TAD データシート(HTML) 20 Page - Infineon Technologies AG |
20 / 51 page Data Sheet 20 Rev. 1.1 2017-03-28 BTS50020-1TAD Smart High-Side Power Switch Functional Description 5.1.6 PWM Switching The switching losses during this operation should be properly considered (see following equation): PTOTAL = (switching_ON_energy + switching_OFF_energy + IL2 × RDS(ON) × tDC) / period PWM switching application slightly above tIN(RESETDELAY) parameter (see Figure 26) with calculated power dissipation PTOTAL > PTOT parameter limit causes an effective increase in TJ(TRIP) parameter. In the event of a fault condition it has to be ensured, that the PWM frequency will not exceed a maximum retry frequency of fFAULT (parameter P_4.1.9). With this measure the short circuit robustness nRSC1 (parameter P_4.1.4) can be utilized. Operation at nominal PWM frequency can only be restored, once the fault condition is overcome. Figure 14 Switching in PWM 5.1.7 Advanced switch-off behavior In order to reduce device stress when switching OFF critical loads and/or critical load conditions, the device provides an advanced switch off functionality which results in a typically ten times faster switch off behavior. This fast switch off functionality is triggered by one the following conditions: • The device is commanded off by applying VIN(L) at the IN pin. During the switch OFF operation the OUT pins’ voltage in respect to GND pin drops to typically -3 V or below (typically VOUT – VGND ≤ -3 V). • The device is commanded on or is already in on-state. The device then detects a short circuit condition (IL ≥ ICL(0)) and initiates a protective switch off. Please refer to Chapter 5.3.6.1 and Chapter 5.3.6.2 for details. VIN t VIN_H VIN_L t PTOT P tDC |
同様の部品番号 - BTS50020-1TAD |
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同様の説明 - BTS50020-1TAD |
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