MAX17080GTL+ Maxim Integrated Products, MAX17080GTL+ Datasheet - Page 19

• Manufacturer Part Number: MAX17080GTL+
• Description: IC CONTROLLER AMD SVI 40-TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX17080GTL+

• Applications: Controller, AMD SVI
• Voltage - Input: 2.7 ~ 5.5 V
• Number Of Outputs: 3
• Operating Temperature: -40°C ~ 105°C
• Mounting Type: Surface Mount
• Package / Case: 40-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -

PIN
33
34
35
36
37
FBDC1
FBAC1
GNDS1
NAME
CSN1
CSP1
______________________________________________________________________________________
Positive Current-Sense Input for SMPS1. Connect to the positive side of the output current-sensing
resistor or the filtering capacitor if the DC resistance of the output inductor is utilized for current
sensing.
Negative Current-Sense Input for SMPS1. Connect to the negative side of the output current-sensing
resistor or the filtering capacitor if the DC resistance of the output inductor is utilized for current
sensing.
A 20
Feedback Sense Input for SMPS1. Connect a resistor R
of the feedback remote sense, and a capacitor from FBAC1 to couple the AC ripple from FBAC1 to
FBDC1. An integrator on FBDC1 corrects for output ripple and ground-sense offset.
To enable a DC load-line less than the AC load-line, add a resistor from FBAC1 to FBDC1.
To enable a DC load-line equal to the AC load-line, short FBAC1 to FBDC1. See the Core Steady-
State Voltage Positioning (DC Droop) section.
FBDC1 is high impedance in shutdown.
Output of the AC Voltage-Positioning Transconductance Amplifier for SMPS1. The R and C network
between this pin and the positive side of the remote-sensed output voltage sets the transient AC
droop:
where R
trade-off between stability and load-transient response, Gm
value of the current-sense element that is used to provide the (CSP1, CSN1) current-sense voltage,
and Z
FBAC1 is high impedance in shutdown.
SMPS1 Remote Ground-Sense Input. Normally connected to GND directly at the load. GNDS1
internally connects to a transconductance amplifier that fine tunes the output voltage—
compensating for voltage drops from the SMPS ground to the load ground.
Connect GNDS1 or GNDS2 above 0.9V combined-mode operation (unified core). When GNDS1 is
pulled above 0.9V, GNDS2 is used as the remote ground-sense input.
CFB1
discharge FET is enabled from CSN1 to PGND when the SMPS1 is shut down.
DROOP_AC1
is the impedance of C
R
DROOP_AC1
AMD 2-/3-Output Mobile Serial
is the transient (AC) voltage-positioning slope that provides an acceptable
=
R
FBDC1
FB1
.
R
+
FBDC1
R
FBAC1
FUNCTION
×
R
+ R
FBAC1
FB1 1
Pin Description (continued)
FBDC1
Z
CFB
(FBAC1)
1
between FBDC1 and the positive side
VID Controller
x R
SENSE1
= 2mS (typ), R
x Gm
(FBAC1)
SENSE1
is the
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