Features and Benefits
- 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
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 COUT 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.
- High-Current Voltage Regulators
- Microprocessor: 32-Bit and 64-Bit I/A RISC Architectures
- Networking ASICs
- Graphic Processors
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
The MAX20751S1VKIT# evaluation kit (EV kit) is a proven application-circuit design for the MAX20751 DC-DC power-supply controller and the VT1697SB power train. The EV kit is a programmable-output, 4-phase switching regulator with a PMBus™ interface. The IC controls up to four power trains to generate a single output voltage. The EV kit can be used as a stand-alone board, if desired. However, to take full advantage of the IC’s capabilities, the user must connect the EV kit to a PC using the MAXPOWERTOOL002 (PowerTool™), Maxim’s USB-to-PMBus interface dongle for power products. The PowerTool is Windows XP-®, Windows Vista-®, and Windows 7-compatible software that provides a simple graphical user interface (GUI) for exercising the features of the IC. The PowerTool GUI allows a PC to control the PMBus interface and to collect real-time data from the EV kit.
The EV kit contains a fully functional PCB assembly and is capable of delivering up to 100W of continuous 0.6V to 1.52V power output from a 7V to 16V input supply.
The PowerTool is sold separately and contains a USB cable (to connect PC to dongle) and a ribbon cable (to connect dongle to EV kit).
The EV kit also evaluates the VT1697SB smart slave IC with integrated current and temperature sensors. The VT1697SB is a features-rich smart slave IC designed to work with Maxim’s master switch-mode power-supply controller to implement a high-density multiphase voltage regulator.
- Communication, Networking, Servers, and Storage Equipment: ASICs, Memory VDDQ, Microprocessor Chipsets, and other High-Current Digital ICs
Features & Benefits
- MAX20751 Master Switch-Mode Controller
- Up to Four Interleaved Power Stages
- Up to 100A Output Current
- PMBus Interface
- Digital Telemetry and Control
- Patented Synchronous Buck Topology Using Coupled Inductors
- Smaller Size
- Higher Efficiency
- Reduced Output Capacitance
- 300kHz to 800kHz Switching Frequency
- 7V to 16V Input Voltage Range
- All Ceramic Capacitor Output Capacitors
- Proven PCB Layout
- Fully Assembled and Tested
VT1697SB Companion Parts
Recommended Related Parts
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Buy Now Pricing
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