VT1697SB Smart Slave IC with Integrated Current and Temperature Sensors General Description Benefits and Features The VT1697SB is a feature-rich smart slave IC designed High Per-Phase Current Capability to work with Maxims seventh-generation masters to 2 Footprint < 1600mm for a 150A VR implement a high-density multiphase voltage regulator. Precise Temperature Monitoring and Reporting Up to six smart slave ICs plus a master IC provide a through a Master Controller IC SMBus compact synchronous buck converter that includes accu- Accurate Per-Phase Current Reporting Using a rate individual phase current and temperature reporting through SMBus. This smart-slave device includes protec- Master Controller IC tion circuits for overtemperature, VX short, all power sup- Top-side Cooling Allows Improved Heat Transfer to plies UVLO faults, and main power supply OVLO fault. If Ambient a fault is detected, the slave IC immediately shuts down Supplies UVLO/OVLO, Bootstrap Voltage UVLO, VX and sends a fault signal to the master IC. Short Protection Monolithic integration and advanced packaging technolo- Overcurrent Protection gies allow practical per-phase high switching frequencies Overtemperature ProtectionFast Shutdown with significantly lower losses than alternative implemen- tations. This smart slave device is designed to support Switching Frequency 300KHz1.3MHz phase shedding and DCM modes for efficiency optimiza- Compatible With Coupled Inductor tion over a wide range of load currents. High per-phase current capability designs with low C enable a design OUT with fewer phases and a smaller footprint. Basic Application Circuit 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- I 1 SENSE nent temperatures. I 2 SENSE VT16x7SB T 1 SENSE I 3 SENSE Applications V SVID OUT VT16x7SB High-Current Voltage Regulators T 2 SENSE VT15x7MB SMBus Microprocessor: 32-Bit and 64-Bit I/A RISC Control1 Control2 Sense- Sense+ Architectures Control6 Memory VT16x7SB T 6 SENSE Graphic Processors Networking ASICs Ordering Information appears at end of data sheet. 19-8655 Rev 4 3/17VT1697SB Smart Slave IC with Integrated Current and Temperature Sensors Absolute Maximum Ratings V to V .........................................................-0.3V to +23V V , V to GND ................................................-0.3V to +2.5V DDH SS DD CC VX to V (DC) .....................................................-0.3V to +23V PWM, ISENSE, TS FAULT to GND ............-0.3V to V + 0.3V SS DD VX to V (AC) (Notes 1, 2) ..................................-10V to +23V V to GND ..........................................................-0.3V to +0.3V SS SS V to VX (DC) ...................................................-0.3V to +23V Peak VX Current (Note 3) .................................................100A DDH V to VX (AC) (Notes 1, 2) ................................-10V to +23V Junction Temperature (T ) ...............................................+150C DDH J BST to V (DC) ................................................-0.3V to +25.5V Storage Temperature Range ............................ -65C to +150C SS BST to V (AC) (Note 2) .....................................-7V to +25.5V Peak Reflow Temperature Lead-Free .............................+260C SS BST to VX Differential ..........................................-0.3V to +2.5V 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 V , V ............................................................1.71V to 1.98V Junction Temperature (T ) ................................ -40C to +125C DD CC J 12V Supply (V ) ...............................................8.5V to 14.0V Frequency (f ) ............................................ 300kHz to 1.3MHz DDH SW Note 1: Input HF capacitors placed not more than 40 mils away from the V pin required to keep inductive-voltage spikes within DDH 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 P163A6F+2 Outline Number 21-0986 Land Pattern Number 90-0490 THERMAL RESISTANCE Junction to Case ( ) VT1697SB 0.42C/W JC 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. Maxim Integrated 2 www.maximintegrated.com