NZXT C1200 Gold 1200 W Review

Name: NZXT C1200 Gold 1200 W
Brand: NZXT
Price: 260 USD

crmaris

on Mar 20th, 2023,

in Power Supplies.

Manufacturer: NZXT

Voltage Regulation Stability & Ripple »

Component Analysis

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

NZXT C1200 Gold Parts Description
General Data
Manufacturer (OEM)	CWT
Platform	CSZ
PCB Type	Double-Sided
Primary Side
Transient Filter	4x Y caps, 2x X caps, 2x CM chokes, 1x MOV
Bridge Rectifier(s)	2x WeEn WNB2560M (600 V, 25 A @ 127 °C)
Inrush Current Protection	NTC Thermistor (SCK-207R0) (7 Ohm) & Relay
APFC MOSFETs	3x Infineon IPA60R099P6 (600 V, 24 A @ 100 °C, Rds (on): 0.099 Ohm) & 1x SyncPower SPN5003 (for reducing the no load consumption)
APFC Boost Diode	1x Infineon IDH16G65C6 (650 V, 16 A @ 135 °C)
Bulk Cap(s)	1x Nippon Chemi-Con (420 V, 1,150 uF, 2,000 h @ 105 °C, KHE)
Main Switchers	2x Infineon IPA60R099P6 (600 V, 24 A @ 100 °C, Rds (on): 0.099 Ohm)
APFC Controller	Champion CM6500UNX
Switching Controller	Champion CU6901VAC
Topology	Primary side: APFC, Half-Bridge & LLC converter Secondary side: Synchronous Rectification & DC-DC converters
Secondary Side
+12 V MOSFETs	10x Infineon BSC014N06NS (60 V, 152 A @ 100 °C, Rds (on): 1.45 mOhm)
+5 V & +3.3 V	DC-DC Converters: 2x UBIQ QN3107M6N (30 V, 70 A @ 100 °C, Rds (on): 2.6 mOhm) & 2x UBIQ QM3054M6 (30 V, 61 A @ 100 °C, Rds (on): 4.8 mOhm) PWM Controller(s): uPI-Semi uP3861P
Filtering Capacitors	Electrolytic: 3x Nippon Chemi-Con (105 °C, W), 1x Nippon Chemi-Con (2 - 5,000h @ 105 °C, KZE), 1x Nichicon (5 - 6,000 h @ 105 °C, HV) 2x Nichicon (4 - 10,000 h @ 105 °C, HE) 1x Nippon Chemi-Con (4 - 10,000 h @ 105 °C, KYA) Polymer: 16x FPCAP, 7x NIC, 1x Nippon Chemi-Con
Supervisor IC	Weltrend WT7502R
Fan Controller	Microchip PIC16F1503
Fan Model	Hong Hua HA13525H12SF-Z (135 mm, 12 V, 0.5 A, Fluid Dynamic Bearing Fan)
5VSB Circuit
Rectifier(s)	1x D10S45L SBR (45 V, 10 A)
Standby PWM Controller	On-Bright OB2365T

This is CWT's CSZ platform, found in several high-end PSUs meeting the ATX v3.0 requirements. The build quality is high and thanks to the vertical boards holding the +12 V FETs and the minor rails, the PCB doesn't look overloaded with parts. A half-bridge topology and an LLC resonant converter are used on the primary side. On the secondary side, a synchronous rectification scheme is used for +12 V and a pair of DC-DC converters for the minor rails.

The input filter is fully equipped.

There is an MOV for protection against power surges. An NTC thermistor handles inrush currents with a bypass relay supporting it.

The pair of bridge rectifiers can handle up to 50 Amperes.

The APFC converter uses three Infineon FETs and a single boost diode by SyncPower. The bulk cap is by Nippon Chemi-Con.

The main FETs are installed in a half-bridge topology. An LLC resonant converter is also used for higher efficiency.

Ten Infineon FETs regulate the +12 V rail.

The VRMs handling the minor rails use eight Infineon FETs and a single PWM controller.

The electrolytic filtering caps are of high quality by Nippon Chemi-Con and Nichicon. Many FPCAP and NIC polymer caps are also used, along with a single by Chemi-Con.