GD3160

[phanit]

Hello, I buy and use the GD3160, I used to design with 24V support for pin Vsup. Somehow, it is should recommend 12V support; it is better than 24V, right? Can you explain which one is better? Since this IC allows support up to 40V. 

[phanit]

The 24 V is the stable output from the SMPS power supply for the first step test. However, the real system will be replaced with a battery one. I would like to confirm which supply voltage range is most suitable for the GD3160. 

Since the device includes an internal regulator from VSUP to 5 V, operating at 24 V will result in higher power dissipation compared to 12 V due to the larger voltage drop across the internal regulator.

Could you please confirm whether using 24 V as VSUP is acceptable from a thermal and reliability standpoint, or if 12 V would be a better operating condition for this device?

[guoweisun]

Hi 

Your 24V input is stable value or typical value when you use GD3160?

[phanit]

The 24 V is the stable output from the SMPS power supply for the first step test. However, the real system will be replaced with a battery one. I would like to confirm which supply voltage range is most suitable for the GD3160. 

Since the device includes an internal regulator from VSUP to 5 V, operating at 24 V will result in higher power dissipation compared to 12 V due to the larger voltage drop across the internal regulator.

Could you please confirm whether using 24 V as VSUP is acceptable from a thermal and reliability standpoint, or if 12 V would be a better operating condition for this device?

[guoweisun]

It can be used in 24V but as you said 12V is more suitable.