VT1697SB IC Datasheet

VT1697SB Datasheet, PDF, Equivalent


Part Number

VT1697SB

Description

Smart Slave IC

Manufacture

Maxim Integrated

Total Page 12 Pages
Datasheet
Download VT1697SB Datasheet


VT1697SB
VT1697SB
Smart Slave IC with Integrated Current
and Temperature Sensors
General Description
The VT1697SB is a feature-rich smart slave IC designed
to work with Maxim’s seventh-generation masters to
implement a high-density multiphase voltage regulator.
Up to six smart slave ICs plus a master IC provide a
compact synchronous buck converter that includes accu-
rate individual phase current and temperature reporting
through SMBus. This smart-slave device includes protec-
tion circuits for overtemperature, VX short, all power sup-
plies UVLO faults, and main power supply OVLO fault. If
a fault is detected, the slave IC immediately shuts down
and sends a fault signal to the master IC.
Monolithic integration and advanced packaging technolo-
gies allow practical per-phase high switching frequencies
with significantly lower losses than alternative implemen-
tations. This smart slave device is designed to support
phase shedding and DCM modes for efficiency optimiza-
tion over a wide range of load currents. High per-phase
current capability designs with low COUT enable a design
with fewer phases and a smaller footprint.
The VT1697SB is an FCQFN package with exposed top-
side thermal pads. Top-side cooling allows improved heat
transfer to ambient and reduces PC board and compo-
nent temperatures.
Applications
● High-Current Voltage Regulators
• Microprocessor: 32-Bit and 64-Bit I/A RISC
Architectures
• Memory
• Graphic Processors
• Networking ASICs
Benefits and Features
● High Per-Phase Current Capability
● Footprint < 1600mm2 for a 150A VR
● Precise Temperature Monitoring and Reporting
through a Master Controller IC SMBus
● Accurate Per-Phase Current Reporting Using a
Master Controller IC
● Top-side Cooling Allows Improved Heat Transfer to
Ambient
● Supplies UVLO/OVLO, Bootstrap Voltage UVLO, VX
Short Protection
● Overcurrent Protection
● Overtemperature Protection—Fast Shutdown
● Switching Frequency 300KHz—1.3MHz
● Compatible With Coupled Inductor
Basic Application Circuit
SVID
SMBus
ISENSE1
ISENSE2
ISENSE3
VT15x7MB
Control1
Control2
Control6
VT16x7SB
TSENSE1
TSENSE2
VT16x7SB
TSENSE6
VT16x7SB
VOUT
Sense- Sense+
Ordering Information appears at end of data sheet.
19-8655; Rev 4; 3/17

VT1697SB
VT1697SB
Smart Slave IC with Integrated Current
and Temperature Sensors
Absolute Maximum Ratings
VDDH to VSS..........................................................-0.3V to +23V
VX to VSS (DC)......................................................-0.3V to +23V
VX to VSS (AC) (Notes 1, 2)...................................-10V to +23V
VDDH to VX (DC)....................................................-0.3V to +23V
VDDH to VX (AC) (Notes 1, 2).................................-10V to +23V
BST to VSS (DC).................................................-0.3V to +25.5V
BST to VSS (AC) (Note 2)......................................-7V to +25.5V
BST to VX Differential...........................................-0.3V to +2.5V
VDD, VCC to GND.................................................-0.3V to +2.5V
PWM, ISENSE, TS_FAULT to GND.............-0.3V to VDD + 0.3V
VSS to GND...........................................................-0.3V to +0.3V
Peak VX Current (Note 3)..................................................±100A
Junction Temperature
Storage Temperature
R(TaJn)g...e............................................................-..6..5..°.C....t.o..
+150°C
+150°C
Peak Reflow Temperature Lead-Free.............................. +260°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Operating Ratings
VDD, VCC............................................................. 1.71V to 1.98V
12V Supply (VDDH)................................................ 8.5V to 14.0V
Junction Temperature (TJ)................................. -40°C to +125°C
Frequency (fSW)............................................. 300kHz to 1.3MHz
Note 1: Input HF capacitors placed not more than 40 mils away from the VDDH pin required to keep inductive-voltage spikes within
Absolute Maximum limits.
Note 2: AC is limited to 25ns.
Note 3: Peak OCP clamp levels limit the application below the peak VX current rating.
Package Information
16 FCQFN
Package Code
Outline Number
Land Pattern Number
THERMAL RESISTANCE
Junction to Case (θJC) VT1697SB
P163A6F+2
21-0986
90-0490
0.42°C/W
For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”,
“#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
www.maximintegrated.com
Maxim Integrated 2


Features VT1697SB Smart Slave IC with Integrated Current and Temperature Sensors Gener al Description The VT1697SB is a featur e-rich smart slave IC designed to work with Maxim’s seventh-generation maste rs to implement a high-density multipha se voltage regulator. Up to six smart s lave ICs plus a master IC provide a com pact synchronous buck converter that in cludes accurate individual phase curren t and temperature reporting through SMB us. This smart-slave device includes pr otection circuits for overtemperature, VX short, all power supplies UVLO fault s, and main power supply OVLO fault. If a fault is detected, the slave IC imme diately shuts down and sends a fault si gnal to the master IC. Monolithic integ ration and advanced packaging technolog ies allow practical per-phase high swit ching frequencies with significantly lo wer losses than alternative implementat ions. This smart slave device is design ed to support phase shedding and DCM mo des for efficiency optimization over a wide range of load current.
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