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L6711 Datasheet(PDF) 40 Page - STMicroelectronics

Part # L6711
Description  3 Phase controller with dynamic VID and selectable DACs
PDF  50 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6711 Datasheet(HTML) 40 Page - STMicroelectronics

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Driver section
L6711
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Moreover, since the device has an exposed pad to better dissipate the power, also the
thermal resistance between junction and ambient is important.
Figure 16 shows the Switching Power for different kind of mosfets driven.
Figure 20.
Controller power dissipated (Quiescent + Switching; VCC = VCCDR = VBOOT
= 12V)
0
500
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1500
2000
2500
3000
10 0
3 00
500
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Sw it ch ing Frequency [k Hz] p er Phase
Q G_HS=24nC
Q G_LS=62nC
Q G_HS=18nC
Q G_LS=47nC
Q G_HS=3 6nC
Q G_LS=94nC
Q G_HS=48 n C
Q G_LS= 124nC
Q G_HS=72nC
Q G_LS=196nC
0
50 0
100 0
150 0
200 0
250 0
300 0
100
300
500
700
900
S w itc hing Freq uen cy [kH z] p er P hase
Q G_HS= 24nC
Q G_LS= 62n C
Q G_HS= 18nC
Q G_LS= 47n C
Q G_HS= 36nC
Q G_LS=9 4nC
Q G_HS= 48n C
Q G_L S=124n C
Q G_HS= 72n C
Q G_LS= 1 96nC
RGATE = RGATE_MOSFET = 0
RGATE_HS = 2.2Ω; RGATE_LS = 3.3Ω; · RGATE_MOSFET = 1Ω



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