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关键词:电源管理 PMIC MAX7775

时间:2018-05-10 10:00:45       作者:Maxim       来源:中电网

Maxim公司的MAX7775是高度集成的多路电源管理解决方案,包括三个降压转换器,低压降线性稳压器,两个使能输出的外接稳压器,两个专用负载开关控制器和采用OTP可配置第三个负载开关控制器的浪涌电流限流器,具有高性能功率管理元件,高精度检测和定制化高水平控制器的组合特性,主要用在固态驱动系统,手持设备,游戏控制台,澳门葡京娱乐平台,自动化系统和照相机等.本文介绍了MAX7775主要优势和特性,框图,典型应用电路图以及评估板MAX77752 EVK主要优势和特,框图,电路图,材料清单和PCB设计图.

The MAX77752 is a highly-integrated power manage­ment solution including three step-down converters, a low-dropout linear regulator, two external regulators enable outputs, two dedicated load switch controllers, and an inrush-current limiter which can be configured as a third load switch controller using OTP. The MAX77752 provides a combination of high-performance powermanagement components, high-accuracy monitoring, and a customized top-level controller that results in anefficient, size optimized solution.

The 40-pin, 5mm x 5mm x 0.8mm, 0.4mm pitch TQFN package is ideal for space constrained applications.

Numerous factory programmable options allow the device to be tailored for many variations of the end application.

MAX7775主要优势和特性:

Highly IntegratedThree Buck RegulatorsIntegrated High-Accuracy BrownoutComparators
One Low-Dropout Linear RegulatorLow-Input Voltage
Two Dedicated Load Switch Controllers
One Inrush-Current Limiter, Configurable to be Load Switch 3 Controller Using OTP
Two External Regulator Enable Outputs
Voltage Monitor for Backup Power Control
Highly Flexible and ConfigurableI2C-Compatible Interface
Factory OTP Options Available
Flexible Power Sequencer
Configurable Sleep-State Control
Small Size40-Pin, 5mm x 5mm x 0.8mm, 0.4mm Pitch TQFN
70mm2 Total Solution Size

MAX7775应用:

Solid-State Drive Systems
Handheld Devices
Gaming Consoles
Drones
Automation Systems
Cameras


图1. MAX7775简化框图

图2. MAX7775典型应用电路图

评估板MAX77752 EVK

The MAX77752 evaluation kit (EV kit) is a fully assembled and tested printed circuit board (PCB) that demonstrates the highly integrated MAX77752 PMIC. The MAX77752 comprises three buck converters, a low dropout linear regulator, two external regulators enable outputs, two dedicated load switch controllers, and an inrush-current limiter which can be configured as a third load switch controller using OTP.
The EV kit also includes a MAXQ2000 microcontroller command module that provides the I2C interface to control power sequence, inrush current, individual output on/off, and setting regulator output voltage.
The MAX77752 evaluation software is provided for easy evaluation.

评估板MAX77752 EVK主要优势和特性:

USB to I2C Converter Allows for Easy Communication
Level Translator (MAX3395) Allows for Adjusting I2C Bus Voltage from 1.8V to 3.3V
On-Board Electronics Load Allows for Easy Evaluation GUI Allows Static/Dynamic Load Adjustment for Buck Converters, LDO, LSWs, and SYS
MOSFET can be Driven by External Function Generator to Evaluate Transient Performance for Each Regulator
Proven PCB Reference Design and Layout
Fully Assembled and Tested

图3. 评估板MAX77752 EVK外形图

图4. 评估板MAX77752 EVK框图

图5. 评估板MAX77752 EVK元件分布图

图6. 评估板MAX77752 EVK电路图(1)

图7. 评估板MAX77752 EVK电路图(2)

图8. 评估板MAX77752 EVK电路图(3)

图9. 评估板MAX77752 EVK电路图(4)

图10. 评估板MAX77752 EVK电路图(5)
评估板MAX77752 EVK材料清单:




图11. 评估板MAX77752 EVK PCB设计图(1):左:顶层丝印;右:顶层布线

图12. 评估板MAX77752 EVK PCB设计图(2):内层2

图13. 评估板MAX77752 EVK PCB设计图(3):左:内层3;右:底层布线

图14. 评估板MAX77752 EVK PCB设计图(4):底层丝印
详情请见:
https://datasheets.maximintegrated.com/en/ds/MAX77752.pdf
https://datasheets.maximintegrated.com/en/ds/MAX77752EVKIT.pdf
MAX77752.pdf
MAX77752EVKIT.pdf

 

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