L6711 datasheet(40/50 Pages) STMICROELECTRONICS

Nome de Peças	L6711

Descrição Electrónicos	3 Phase controller with dynamic VID and selectable DACs

PDF	50 Pages

Scroll/Zoom	100%

Fabricante Electrônico	STMICROELECTRONICS [STMicroelectronics]

Página de início	http://www.st.com

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40 / 50 page

Driver section

L6711

40/50

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)

500

1000

1500

2000

2500

3000

10 0

3 00

500

700

900

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

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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