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VT1697SB

Smart Slave IC with Integrated Current and Temperature Sensors

High-Current, Smart-Slave IC with Integrated Current and Temperature Sensors

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Overview

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 accurate individual phase-current and temperature reporting via SMBus/PMBus. This smart slave device includes protection circuits for overtemperature, VS short, all power supplies UVLO faults and main power supply OVLO fault. If a fault is detected, the slave IC will immediately shut down and send a fault signal to the master IC.

Monolithic integration and advanced packaging technologies allow practical per-phase, high switching frequencies with significantly lower losses than alternative implementations. Smart slave devices are designed to support phase-shedding and DCM modes for efficiency optimization over a wide range of load currents. High per-phase current-capability designs with low C_OUT enable a design with fewer phases and a smaller footprint.

The VT1697SB is packaged in a QFN package with exposed top-side thermal pads. Top-side cooling allows improved heat transfer to ambient and reduces PC board and component temperatures.

VT1697SB: Basic Application Circuit

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Key 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

Applications/Uses

High-Current Voltage Regulators
Microprocessor: 32-Bit and 64-Bit I/A RISC Architectures
Memory
Networking ASICs
Graphic Processors

Parametric Specs

Part Number

V_IN
(V)

V_OUT1
(V)

I_OUT1
(A)

Switch Type

Synchronous Switching

DC-DC Outputs

Oper. Freq.
(kHz)

Package/Pins

Budgetary
Price

min

max

min

max

See Notes

VT1697SB

8.5

Internal

Yes

1300

FCQFN/16

$4.46 @1k

See All Step-Down Switching Regulators (388)

Pricing Notes:

This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Design Resources

MAX20751S1VKIT: Evaluation Kit for the MAX20751/VT1697SB

Technical Documents

User Guide 6055 KCU1250 MGT Module Quick Start Guide
App Note 5963 SMT Assembly and PCB Design Guidelines for Maxim’s Flip-Chip Exposed Die QFN (No Leads) Packages

Quality and Environmental Data

Product Reliability Reports: VT1697SB.pdf
Lead-Free Package Tin (Sn) Whisker Reports

Quality And Environmental

Device	Fab Process	Technology	Sample size	Rejects	FIT at 25°C	FIT at 55°C

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

Quality Management System >
Environmental Management System >

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Technical Docs

Type	ID	PDF	Title
User Guide	6055		KCU1250 MGT Module Quick Start Guide
App Note	5963		SMT Assembly and PCB Design Guidelines for Maxim’s Flip-Chip Exposed Die QFN (No Leads) Packages