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STPD01 bảng dữ liệu(PDF) 19 Page - STMicroelectronics

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Giải thích chi tiết về linh kiện  Programmable buck converter for USB power delivery
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STPD01 bảng dữ liệu(HTML) 19 Page - STMicroelectronics

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Figure 33. Deglitch time
Pon
VOUT
deglitch time
5% of Vout
Time
Time
7.5
Vout transition
The Vout transitions are performed forcing the device into PWM mode in order to guarantee the max. slew rate
reported in the EC table (see Table 6. Electrical characteristics).
During the transitions, the voltage level overcomes the limits defined by the ±2% precision. Therefore an extra
margin of 500 mV (max.) is allowed for about 300 ms and OVP is masked in order to avoid false alarms.
Figure 34. Transition envelope for positive voltage
transitions
Slew rate
500mV
500mV
Voltage
Time
Figure 35. Transition envelope for negative voltage
transitions
500mV
500mV
Voltage
Time
Slew rate
The maximum slew rate is guaranteed with the output capacitance value defined in the USB-PD spec. as follows:
STPD01
Vout transition
DS13473 - Rev 1
page 19/43



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