Re: Power supply build quality pictorial. part 2
Be Quiet! Pure Power L8 300W
Manufacturer _________________ FSP
Certification__________________ ATX 2.4 // 80+ Bronze
PRIMARY__________________________________________________________________________
Topology_____________________Two-Transistor Forward
Transient Filter________________4x Y-caps (2x '472' + 2x '222'), 2x X-caps (.68 + .228), 1x ferrite ring, 2.5x CM chokes (added 1x MOV)
Bridge Rectifier________________1x GBU806 (8A, 600V)
Inrush Current Protection_________-
PFC__________________________APFC
______________________________Unidentified APFC/PWM Controller (possible CM6800)
______________________________1x unidentified APFC MOSFET
______________________________1x STTH8R06FP Boost diode
Bulk Cap______________________1x Teapo LH 150uF 420V (85C) 22mmØ
Main Switchers_________________2x JCS13N50FT N-Channel MOSFETS (13A/52A) RDS(ON)= 0.37~0.46Ω
SECONDARY________________________________________________________________________
Group Regulation
Passive Diodes Rectification
+12V_________________________2x PFR30L60CT Schottkys (30A) VF= 0.53~0.60V
+5V__________________________2x PFR30V45CT Schottkys (30A) VF= 0.41~0.47V
+3.3V________________________ 2x PFR30V45CT Schottkys (30A) VF= 0.41~0.47V
Filtering Caps
+12V_________________________3x Teapo SC 3300uF 16V (105C) 10mmØ
+5V__________________________2x Taicon 2200uF 10V (105C) 10mmØ
+3.3V________________________ 1x Teapo 2200uF 10V (105C) 10mmØ + 1x Taicon 2200uF 10V (105C) 10mmØ
-12V_________________________ 1x unidentified 8mmØ
Supervisor IC__________________ Weltrend WT7527 (OVP, UVP, OCP, OPP, OTP, SCP)
Fan__________________________ 1x 120mm Be Quiet! Silentwings BQT T12025-MS-16 (12V, 0.20A, 1600 RPM, rifle bearing, 25.1 dBA max)
+5VSB_____________________________________________________________________________
Integrated PWM Controller/Switching Transistor TNY277PN
Filtering Caps__________________ 1x Taicon unidentified + 1x Teapo 1500uF 10V (105C) 10mmØ
Decent input filtering only lacking the MOV (already corrected):
Well sized bridge rectifier attached to the PFC heatsink:
There's one single MOSFET for the PFC stuff, can't read it with that huge choke in front:
The bulk cap is a measly 150uF, that's probably why they've penny-pinched on the NTC thermistor :
The main switchers are two 13N50 in two-transistor forward I think (please correct me if I'm wrong on this):
The PFC/PWM switching controller is cloaked up, it might be a CM6800 (like in other versions of the L8):
Doubled Schottkys all around:
The filtering caps are mediocre Teapo and Taicon stuff, but at least they're generously sized, with three 3300uF on the two +12V rails :
+5VSB is handled by a TNY277PN and a BR1060 Schottky:
The supervisor protections IC is a Weltrend WT7527, which manufacturer claims offers OVP, UVP, OCP, OPP, OTP and SCP:
The fan has 'corrugated' blades, like the wings of a Ford TriMotor or a Junkers 52 :
^ The stuff works for this is the quietest PSU ever, dead silent.
The cabling:
I'll leave the craps onboard for a couple years to amortize them, then will recap with japs all around, a ~270uF bulk and a NTC thermistor.
Be Quiet! Pure Power L8 300W
Manufacturer _________________ FSP
Certification__________________ ATX 2.4 // 80+ Bronze
PRIMARY__________________________________________________________________________
Topology_____________________Two-Transistor Forward
Transient Filter________________4x Y-caps (2x '472' + 2x '222'), 2x X-caps (.68 + .228), 1x ferrite ring, 2.5x CM chokes (added 1x MOV)
Bridge Rectifier________________1x GBU806 (8A, 600V)
Inrush Current Protection_________-
PFC__________________________APFC
______________________________Unidentified APFC/PWM Controller (possible CM6800)
______________________________1x unidentified APFC MOSFET
______________________________1x STTH8R06FP Boost diode
Bulk Cap______________________1x Teapo LH 150uF 420V (85C) 22mmØ
Main Switchers_________________2x JCS13N50FT N-Channel MOSFETS (13A/52A) RDS(ON)= 0.37~0.46Ω
SECONDARY________________________________________________________________________
Group Regulation
Passive Diodes Rectification
+12V_________________________2x PFR30L60CT Schottkys (30A) VF= 0.53~0.60V
+5V__________________________2x PFR30V45CT Schottkys (30A) VF= 0.41~0.47V
+3.3V________________________ 2x PFR30V45CT Schottkys (30A) VF= 0.41~0.47V
Filtering Caps
+12V_________________________3x Teapo SC 3300uF 16V (105C) 10mmØ
+5V__________________________2x Taicon 2200uF 10V (105C) 10mmØ
+3.3V________________________ 1x Teapo 2200uF 10V (105C) 10mmØ + 1x Taicon 2200uF 10V (105C) 10mmØ
-12V_________________________ 1x unidentified 8mmØ
Supervisor IC__________________ Weltrend WT7527 (OVP, UVP, OCP, OPP, OTP, SCP)
Fan__________________________ 1x 120mm Be Quiet! Silentwings BQT T12025-MS-16 (12V, 0.20A, 1600 RPM, rifle bearing, 25.1 dBA max)
+5VSB_____________________________________________________________________________
Integrated PWM Controller/Switching Transistor TNY277PN
Filtering Caps__________________ 1x Taicon unidentified + 1x Teapo 1500uF 10V (105C) 10mmØ
Decent input filtering only lacking the MOV (already corrected):
Well sized bridge rectifier attached to the PFC heatsink:
There's one single MOSFET for the PFC stuff, can't read it with that huge choke in front:
The bulk cap is a measly 150uF, that's probably why they've penny-pinched on the NTC thermistor :
The main switchers are two 13N50 in two-transistor forward I think (please correct me if I'm wrong on this):
The PFC/PWM switching controller is cloaked up, it might be a CM6800 (like in other versions of the L8):
Doubled Schottkys all around:
The filtering caps are mediocre Teapo and Taicon stuff, but at least they're generously sized, with three 3300uF on the two +12V rails :
+5VSB is handled by a TNY277PN and a BR1060 Schottky:
The supervisor protections IC is a Weltrend WT7527, which manufacturer claims offers OVP, UVP, OCP, OPP, OTP and SCP:
The fan has 'corrugated' blades, like the wings of a Ford TriMotor or a Junkers 52 :
^ The stuff works for this is the quietest PSU ever, dead silent.
The cabling:
I'll leave the craps onboard for a couple years to amortize them, then will recap with japs all around, a ~270uF bulk and a NTC thermistor.
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