L6711TR STMicroelectronics, L6711TR Datasheet - Page 40

• Manufacturer Part Number: L6711TR
• Description: IC CTRLR 3PHASE VID/DACS 48-TQFP
• Manufacturer: STMicroelectronics
• Type: Step-Down (Buck)r

Specifications of L6711TR

• Internal Switch(s): No
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 0.8 ~ 1.55 V
• Current - Output: 2A
• Frequency - Switching: 150kHz
• Voltage - Input: 12V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 48-TQFP Exposed Pad, 48-eTQFP, 48-HTQFP, 48-VQFP
• Power - Output: 2.5W
• Output Voltage: 0.8 V to 1.581 V
• Output Current: 95 A
• Input Voltage: 13.8 V
• Mounting Style: SMD/SMT
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: 0 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-5363-2; L6711TR

Driver section
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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; V
30 0 0
25 0 0
20 0 0
15 0 0
10 0 0
5 0 0
0
10 0
= 12V)
S w it ch in g F req u e n c y [k H z ] p er P h a s e
R
GATE
3 00
= R
Q
Q
Q
GATE_MOSFET
Q
G _L S
5 00
G _ LS
G _H S
G_ H S
=1 2 4 nC
= 48 n C
=1 9 6 n C
=7 2 nC
7 0 0
Q
Q
Q
Q
Q
Q
G_ H S
G _ LS
G _ H S
G _ H S
G_ LS
G_ LS
= 0
=3 6 n C
=9 4 n C
=6 2 n C
=4 7 n C
=2 4 n C
=1 8 n C
9 00
R
GATE_HS
= 2.2 ; R
300 0
250 0
200 0
150 0
100 0
50 0
GATE_LS
0
1 00
Q
Q
G _LS
G _HS
= 3.3 ; · R
Sw itc hing Freq uen cy [kH z] p er P hase
= 1 96nC
= 72n C
30 0
Q
Q
Q
500
Q
GATE_MOSFET
G _L S
G _HS
G _ LS
G_ H S
= 124nC
= 36 nC
= 9 4nC
= 48nC
7 00
CC
Q
Q
Q
Q
G _HS
G _ LS
G _HS
G _ LS
= V
= 1
= 24n C
= 62n C
= 18n C
= 47n C
900
CCDR
= V
L6711
BOOT