MAX20743
Integrated, Step-Down Switching Regulator with PMBus
Monolithically Integrated, PMBus Enabled Step-Down Switching Regulator with High Power Density and Low Component Count
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Key Features
Applications/Uses
| VIN (V) (min) | 4.5 |
| VIN (V) (max) | 16 |
| VOUT1 (V) (min) | 0.6 |
| VOUT1 (V) (max) | 5.5 |
| IOUT1 (A) (max) | 35 |
| Switch Type | Internal |
| Preset VOUT (V) | 1 |
| Output Adjust. Method | Digital/VID Preset Resistor |
| Synchronous Switching? | Yes |
| Power Good Signal | Yes |
| # DC-DC Outputs | 1 |
| Switching Frequency (kHz) | 400 600 800 |
| Design Tools | EE-Sim |
| Package/Pins | FCQFN/15 |
| Budgetary Price (See Notes) | 4.79 |
Simplified Block Diagram
Technical Docs
Digital PowerTool GUI Demo – Step 1: Introduction
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Parameters
| VIN (V) (min) | 4.5 |
| VIN (V) (max) | 16 |
| VOUT1 (V) (min) | 0.6 |
| VOUT1 (V) (max) | 5.5 |
| IOUT1 (A) (max) | 35 |
| Switch Type | Internal |
| Preset VOUT (V) | 1 |
| Output Adjust. Method | Digital/VID Preset Resistor |
| Synchronous Switching? | Yes |
| Power Good Signal | Yes |
| # DC-DC Outputs | 1 |
| Switching Frequency (kHz) | 400 600 800 |
| Design Tools | generateDesignEESIMUrl('http://maxim.transim.com/pwm2/designreq/Index?partId=5711', '') |
| Package/Pins | FCQFN/15 |
| Budgetary Price (See Notes) | 4.79 |
Key Features
- High-Power Density and Low Component Count
- Overall Solution Size 509mm2 Including Inductor and Output Capacitors
- 90.8% Peak Efficiency with VDDH = 12V and VOUT = 1V
- Fast Transient Response: Supports Up to 300A/µs Load-Step Transients
- Optimized Component Performance and Efficiency with Reduced Design-In Time
- PMBus-Compliant Interface for Telemetry and Power Management
- Voltage, Current and Temperature Reporting through Digital Bus
- Increased Power-Supply Reliability with System and IC Self-Protection Features
- Differential Remote Sense with Open-Circuit Detection
- Hiccup Overcurrent Protection
- Programmable Thermal Shutdown
Applications/Uses
- Communications
- Networking
- Servers and Storage equipments
Description
The MAX20743 is a fully integrated, highly efficient switching regulator with PMBus™ for applications operating from 4.5V to 16V and requiring up to 35A maximum load. This single-chip regulator provides extremely compact, high-efficiency power delivery solutions with high-precision output voltages and excellent transient response for networking, datacom and telecom equipment.
The IC offers a broad range of programmable features through either the PMBus or through a capacitor and resistor connected to a dedicated programming pin. Using this feature, the operation can be optimized for a specific application, reducing the component count and/or setting appropriate trade-offs between the regulator’s performance and system cost. Ease of programming enables using the same design for multiple applications.
The IC includes protection and telemetry features. Positive and negative cycle-by-cycle overcurrent protection and overtemperature protection ensure a rugged design. Input undervoltage lockout shuts down the device to prevent operation when the input voltage is out of specification. A status pin provides an output signal to show that the output voltage is within range and the system is regulating.
Technical Docs
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
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