My design based on the EG1164 high-power synchronous rectifier boost power supply module

[zeruns]

EG1164 High Power Synchronous Rectifier Boost Power Supply Module, Maximum Efficiency 97%, Input Voltage 8~50V, Output Voltage 8~60V Adjustable, Maximum Power 300W or more, Switching Frequency 219kHz.

Because I have limited test equipment (power supply and load are maximum 300W), so I can not measure the higher power, this board should not be a problem with a maximum power of more than 400 or 500 watts.

 

open-source URL：https://oshwlab.com/zeruns/eg1164-high-power-synchronous-rectifier-booster-module

 

 

EG1164 Introduction

The EG1164 is a high-voltage, high-current step-up synchronous rectifier DC-DC power management chip with an internal integrated reference power supply, oscillator, error amplifier, cycle-by-cycle current limiting control, half-bridge driver, etc. It is very suitable for high-voltage and high-current applications, and it can support up to 600V power supply voltage output with an external high-voltage MOS tube.

• Boost synchronous rectification solution, support high voltage and high current solutions
• An external capacitor can be used to set the operating frequency (0-300KHz).
• 2-pin EN external resistor for flexible adjustment of start-up and shutdown voltage.
• UVLO undervoltage lockout function:
  • Vcc pin turn-on voltage 3.65V
  • Vcc pin OFF voltage 3.6V
• Week-by-week current limit control
• Package: SOP16

 

actual picture

 

Test Data

test equipment：

• Toplia Adjustable Power Supply X08P3010：https://blog.zeruns.tech/archives/698.html
• Hantek DSO2D15 Benchtop Oscilloscope：https://blog.zeruns.tech/archives/652.html
• 炬为 Electronic Load：https://s.click.taobao.com/TPZCHAu
• VC86E Multimeter：https://s.click.taobao.com/9P9CHAu

输出带载测试(Output Load Test)

Input 12V, output 36.6V, no-load current 0.11A, no-load power 1.32W.

Input Voltage	Input Current	input power	output voltage	Output Current	output power	efficiency
11.59V	4.556A	52.8W	48.05V	1A	48.05W	91%
11.12V	9.57A	106.42W	47.93V	2A	95.86W	90.1%
23.43V	6.434A	150.75W	47.95V	3A	143.85W	95.4%
31.75V	3.155A	100.17W	47.95V	2A	95.9W	95.7%
31.32V	7.88A	246.8W	47.62V	5A	238.1W	96.5%
23.25V	8.59A	199.72W	47.66V	4A	190.64W	95.5%
23.29V	8.03A	187.02W	35.98V	5A	179.9W	96.2%
23.3V	8.14A	189.66W	59.67V	3A	179.01W	94.4%
31.25V	8.59A	268.44W	59.67V	4.3A	256.58W	95.6%
8.08V	6.52A	52.68W	23.87V	2A	47.74W	90.6%
7.6V	5.09A	38.68W	11.82V	3A	35.46W	91.7%
31.23V	9.46A	295.44W	35.93V	8A	287.44W	97.3%

Different input and output voltage differences and different output currents affect efficiency.

 

 

schematic

 

PCB