SHARE

The +5VSB Power Supply

The +5VSB (a.k.a. standby) power supply is independent of the main power supply, since it is on continuously.

The switching section of the +5VSB power supply uses an AP03N70I MOSFET, which supports up to 3.3 A at 25° C or 2.1 A at 100° C in continuous mode or up to 10 A at 25° C in pulse mode, with a maximum RDS(on) of 3.6 Ω.

NZXT HALE 92 V2 850wFigure 22: The +5VSB switching transistor

The rectification of the +5VSB output is performed by an STPS20L60CT Schottky rectifier, which supports up to 20 A (10 A per internal diode at 140° C, 0.74 V maximum voltage drop).

NZXT HALE 92 V2 850wFigure 23: The +5VSB rectifier

1
2
3
4
5
6
7
8
9
10
11
12
13
Gabriel Torres is a Brazilian best-selling ICT expert, with 24 books published. He started his online career in 1996, when he launched Clube do Hardware, which is one of the oldest and largest websites about technology in Brazil. He created Hardware Secrets in 1999 to expand his knowledge outside his home country.