时间：2017-04-13 10:37:19 作者：Maxim 来源：中电网
The MAX20733 is a fully integrated, highly efficient switching regulator 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 capacitors and resistors connected to dedicated programming pins. 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 MAX20733 includes protection capabilities. 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.
High Power Density and Low Component Count Overall Solution Size: 509mm2 Including Inductor and Output Capacitors
90.8% Peak Efficiency: 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
Increased Power-Supply Reliability with System and IC Self-Protection Features Differential Remote Sense with Open-Circuit Detection
Hiccup Overcurrent Protection
Programmable Thermal Shutdown
Servers and Storage Equipment
Point-of-Load Voltage Regulators
The MAX20733 Evaluation Kit (EV kit) serves as a reference platform for evaluating the MAX20733 voltage regulator IC. This single-chip, integrated switching regulator provides an extremely compact, low-cost, highly efficient, fast, accurate and reliable power delivery solution for emerging low-output voltage applications up to 35A. Refer to the MAX20733 IC data sheet for more information.
The EV kit consists of a fully assembled and tested PCB implementation of the MAX20733. Jumper pins, test points, and input/output connectors are included for flexibility and ease-of-use in a wide range of applications.
The evaluation board is configured with an “edge strip” to allow high di/dt loading when evaluating the system. The +VOUT connection is on the top side, while the return (or -VOUT) is on the bottom side, directly mirroring the top-side strip.
Either solder directly to the output “strip” or use the J8 terminal block to interface to a load.
High Efficiency and Power Density
Low Component Count
Small Solution Size 509mm2 Including Inductor and Output Capacitors
Reduced Design-In Time
Proven PCB Layout
Fully Assembled and Tested
图7.评估板MAX20733 EVK PCB设计图(1):顶层
图8.评估板MAX20733 EVK PCB设计图(2):底层
图9.评估板MAX20733 EVK PCB设计图(3):L1层
图10.评估板MAX20733 EVK PCB设计图(4):L2层
图11.评估板MAX20733 EVK PCB设计图(5):L3层
图12.评估板MAX20733 EVK PCB设计图(6):L4层