L6711TR STMicroelectronics, L6711TR Datasheet - Page 25

• 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

L6711
10.2
Since I
characteristic vs. load current is given by:
Where R
is the output current of the system and R
whole power supply can be then represented by a "real" voltage generator with a voltage
value of VID and an equivalent series resistance R
R
Figure 10. Voltage positioning with offset
Offset
The OFFSET pin allows programming a positive or a negative offset (V
voltage.
When the Integrated Thermal Sensor is disabled (TC = SGND) a resistor R
connected vs. SGND increases the output voltage: since the pin is internally fixed at 1.240V,
the current programmed by the resistor R
from the I
considered):
The device will add the programmed offset V
(considering now also the droop effect) subtracting the relative offset current from the
feedback current I
VID R
R
V
VID R
FB
OUT
FB
–
–
resistor can be also designed according to the R
=
=
DROOP
R
FB
FB
VID
DROOP
SENSE
FB
I
I
DR OOP
FB
current (see
+
depends on the current information about the three phases, the output
R
=
is the chosen sensing element resistance (Inductor DCR or LS R
1.240V
FB
---------------------
R
TC
VID R
SEN SE
FB
Rg
=
I
OFFSET
:
VID R
–
OFFSET
FB
Figure
–
=
FB
I
D ROOP
VID
R
OFFSET
R
--------------------- I
10) as follow (Only the I
I
1:1
OFFSET
SENSE
+
Rg
R
–
FB
I
I
OFFSET
FB
FB
DROOP
⎛
OFFSET
OUT
------------------------
R
1.240V
OFFSET
OS
VID
I
DROOP
R
=
R
= VID
FB
F
is its equivalent output resistance (The
to the output programmed voltage
VID R
is mirrored and then properly subtracted
⎞
⎠
DROOP
COMP
C
=
–
+
DROOP
F
R
VID
DROOP
OFFSET
FB
).
VSEN
+
I
specifications as follow:
OFFSET
V
OS
contribute to I
I
OUT
–
64k
64k
R
Voltage positioning
D ROOP
OS
FBR
) for the output
(Remote Sense)
To Vcore
OFFSET
FB
FBG
I
OUT
has been
dsON
), I
25/50
OUT