AQIRYS Pulsar LS White 750 W Review

Name: AQIRYS Pulsar LS White 750 W
Brand: AQIRYS
Price: 79 USD

crmaris

on Mar 3rd, 2022,

in Power Supplies.

Manufacturer: AQIRYS

Voltage Regulation Stability & Ripple »

Component Analysis

Before reading this page, we strongly suggest looking at this article, which will help you better understand the insides of a PSU.

AQIRYS Pulsar LS White 750W Parts Description
General Data
Manufacturer (OEM)	SANR Electronic Technology
PCB Type	single-sided
Primary Side
Transient Filter	4x Y caps, 2x X caps, 2x CM chokes, 1x Champion CM02X (discharge IC)
Bridge Rectifier(s)	1x GBU1508 (800 V, 15 A @ 100 °C)
Inrush Current Protection	NTC Thermistor 2.5D-15 (2.5 ohm)
APFC MOSFET(s)	1x FuXin Semiconductor FXN28N50F (500 V, 16.7 A @ 100 °C, Rds (on): 0.2 ohm)
APFC Boost Diode	1x Champion CMPFCD86 (600 V, 8 A @ 140 °C)
Bulk Cap(s)	2x TK (420 V, 220 uF each or 440 uF combined, 105 °C, LFW)
Main Switchers	2x FuXin Semiconductor FXN25N50F
PFC/PWM Combo Controller	Champion CM6800UX
Topology	Primary Side: APFC, double forward Secondary Side: synchronous rectification & DC-DC converters
Secondary Side
+12 V MOSFETs	4x CYS CSP03N06A
+5 V & +3.3 V	DC-DC Converters: 4x UBIQ M3004D (30 V, 40 A @ 100 °C, Rds (on): 8.5 mOhm) PWM Controller(s): ANPEC APW7159A
Filtering Capacitors	Electrolytic: 13x Hangcon (105°C) Polymer: 2x NJcon, 2x no information available
Supervisor IC	Grenery GR8329N (OCP, OVP, UVP, SCP, PG)
Fan Model	DWPH EFS-12E12L (120 mm,12 V, 0.16 A, fluid dynamic bearing fan)
5VSB Circuit
Standby PWM Controller	Developer Microelectronics DP2358

The OEM of this PSU is SANR, which probably doesn't ring a bell for most of you. Its other name is Casecom. The same OEM is heavily utilized by Kolink and Aerocool, and it is known for its high performance per dollar products. The platform in this unit combines old and new elements, so we see a double-forward topology and DC-DC converters on the secondary side to generate the minor rails. The build quality looks decent. The heatsinks are large enough since this is an older design, and the fixed cables don't look that bad because of white gauges.

The transient filter starts on the AC receptacle and continues on the main PCB. It lacks a Metal Oxide Varistor (MOV), so it doesn't offer any voltage surge protection.

There is an NTC thermistor for suppressing large inrush currents. I didn't expect it to be supported by a bypass relay. The Y-caps in front of it reduce EMI.

The single bridge rectifier is pretty strong, at least on paper.

The APFC converter uses two FuXin FETs and a Champion boost diode. The bulk caps are by Toshin Kogyo, offering 440uF combined capacity. They are rated at 105 °C, but I couldn't find their lifetime at this temperature.

The combo PFC/PWM controller is a Champion CM6800UX.

The two primary switching FuXin FXN25N50F FETs are installed in a double-forward topology.

The main transformer lowers the voltage the primary side delivers and provides electrical isolation between the primary and secondary sides.

Four Cystech CSP03N06As regulate the +12 V rail.

The electrolytic filtering caps are by Hangcon, a brand I have never encountered before. The shortage in capacitors has brought some new factories onto the scene. The polymer caps are few and provided by third-tier manufacturers. AQIRYS must be fearless to be offering a six-year warranty while using these caps.