FSP Hydro PTM Pro 1200 W Review - A Silent Power Factory

crmaris

on Dec 9th, 2020,

in Power Supplies.

Manufacturer: FSP

Voltage Regulation Stability & Ripple »

Component Analysis

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

FSP Hydro PTM Pro 1200 W Parts Description
General Data
Manufacturer (OEM)	FSP
PCB Type	Double-sided
Primary Side
Transient Filter	4x Y caps, 3x X caps, 2x CM chokes, 1x MOV
Bridge Rectifier(s)	2x HY GBJ2506P (600 V, 25 A @ 100 °C)
Inrush Current Protection	NTC thermistor (SCK-056) (5 ohm) & relay
APFC MOSFETs	3x Infineon IPA60R120P7 (650 V, 16 A @ 100 °C, Rds (on): 0.12 ohm)
APFC Boost Diode	2x Infineon IDH08G65C6 (650 V, 8 A @ 145 °C)
Bulk Cap(s)	2x Hitachi (450 V, 560 uF each or 1.120 uF combined, 2,000 h @ 105 °C HU)
Main Switchers	4x STMicroelectronics STF26NM60N (600 V, 12.6 A @ 100 °C, Rds (on): 0.165 ohm)
IC Driver	2x Silicon Labs Si8233BD
APFC Controller	Infineon ICE2PCS02G
Switching Controller	Champion CM6901T2X
Topology	Primary side: APFC, full-bridge & LLC converter Secondary side: synchronous rectification & DC-DC converters
Secondary Side
+12 V MOSFETs	8x
+5 V & +3.3 V	DC-DC Converters: 6x Infineon BSC0901NS (30 V, 94 A @ 100 °C, Rds (on): 1.9 mOhm) PWM Controllers: ANPEC APW7159C
Filtering Capacitors	Electrolytic: 4x Nippon Chemi-Con (1–5,000 h @ 105 °C, KZE), 2x Rubycon (4–10,000 h @ 105°C, YXF), 1x Rubycon (6–10,000 h @ 105°C, ZLH), 1x Rubycon (4–10,000 h @ 105°C, YXH), 2x Rubycon (3–6,000 h @ 105°C, YXG) Polymer: 31x United Chemi-Con
Supervisor IC	SITI PS223H (OCP, OTP, OVP, UVP, SCP, PG)
Fan Controller	APW9010
Fan Model	Protechnic Electric MGA13512XF-A25 (135 mm, 12 V, 0.38 A, fluid dynamic bearing fan)
5VSB Circuit
Rectifier(s)	1x International Rectifier IRF1018ESPbF FET (60 V, 56 A @ 100 °C, Rds (on): 8.4 mOhm)
Standby PWM Controller	Power Integrations INN2603K

Build quality is high. FSP used good parts, including Infineon FETs and Hitachi, Chemi-Con, and Rubycon caps. The Protechnic Electric fan is another quality part that will play a significant role in extending the lifetime of the PSU.

On the primary side, FSP used a full-bridge topology and an LLC resonant converter. There is, of course, an APFC converter. A synchronous design is used, with a pair of DC-DC converters for the minor rails on the secondary side. For less energy losses, it is also good to see a FET instead of an SBR rectifying the 5VSB rail.

The transient filter has four Y and three X caps, two CM chokes, and an MOV. It is complete, offering adequate EMI filtering.

An MOV in the transient filter suppresses voltage surges. For high inrush currents, FSP used the usual method: an NTC thermistor supported by a bypass relay.

The two bridge rectifiers can handle up to 50 A of current.

The APFC converter uses three Infineon FETs and two boost diodes by the same manufacturer.

The PFC controller is an Infineon ICE2PCS02G IC.

Four FETs are installed in a full-bridge topology, and their controller is a Champion CM6901T2X IC. The IC drivers are by Silicon Labs.

The main transformer and resonant tank of the LLC resonant converter.

Eight FETs regulate the +12 V rail. It was impossible to identify these since all markings were erased.

Two VRMs generate the minor rails. They use six Infineon FETs and an Anpec PWM controller. There are two potentiometers on the 5VSB daughter board, which I thought best not to mess with.

All caps are by Japanese brands, and most of the electrolytic caps belong to good lines. Besides electrolytics, I also found a large number of polymer caps.

The board with the DC-DC converters also includes the supervisor IC, a SITI PS223H, which is among the few supporting OTP (over temperature protection) out of the box.

The 5VSB rectifier circuit uses an INN2603K PWM controller. On the secondary side of the same circuit, we find a FET instead of an SBR for higher efficiency levels.