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PM8803 Datasheet(PDF) 26 Page - STMicroelectronics

Part # PM8803
Description  High-efficiency, IEEE 802.3at compliant integrated PoE-PD interface and PWM controller
PDF  34 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

PM8803 Datasheet(HTML) 26 Page - STMicroelectronics

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PWM controller
PM8803
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Doc ID 018559 Rev 2
The same delay time is set between the GAT1 falling edge and the subsequent GAT2 falling
edge.
The useful range for RDT is between 5 k to 200 kOhm. A resistor should always be
connected to this pin.
Figure 12.
Delay time vs. RDT
Figure 13.
Timing relationship between output drivers as a function of DT
AM045102v1
0
20
40
60
80
100
120
140
160
180
200
220
240
260
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320
0
10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200
DT [ns]
RDT[KOhm]
GAT2
GAT1
DT
DT
AM045103v1



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