EVBUM2566/D Implementing AllinOne PC Power Supply Evaluation Board User s Manual PC Power Supply with the NCP13992, www.onsemi.com NCP1616, NCP4306 and NCP431 EVAL BOARD USERS MANUAL Description This evaluation board users manual provides basic information about a high efficiency, low no-load power consumption reference design that was tailored to power All-in-One PC or similar type of equipment that accepts 12 VDC on the input. The power supply implements PFC front stage to assure unity power factor and low THD, current mode LLC power stage to enhance transient response and secondary side synchronous rectification to maximize efficiency. This design note focuses mainly on the NCP13992 current mode LLC controller description. Please use links in literature section to get materials about NCP1616, NCP4306 and NCP431 to gain more Figure 1. Evaluation Board Picture information about these devices. The NCP13992 is a high performance current mode controller for half bridge resonant converters. This controller implements 600 V Key Features gate drivers, simplifying layout and reducing external component Wide Input Voltage Range count. The Controller also features built-in high voltage startup. The High Efficiency Brown-Out input function eases implementation of the controller in all applications. In applications where a PFC front stage is needed, the Low Noload Power Consumption NCP13992 features a dedicated output to drive the PFC controller. No Auxiliary SMPS, Fast Startup This feature together with quiet skip mode technique further improves X2 Capacitor Discharge Function light load efficiency of the whole application. The NCP13992 Near Unity Power Factor provides a suite of protection features allowing safe operation in any Low Mains & Overload Protection application. This includes: overload protection, over-current protection to prevent hard switching cycles, brown-out detection, open Thermal Protection optocoupler detection, automatic dead-time adjust, over-voltage Regulated Output Under any Conditions (OVP) and over-temperature (OTP) protections. The LLC current Excellent Load & Line Transient Response mode means that the operating frequency of an LLC converter is not All Magnetics Available as Standard Parts controlled via voltage (or current) controlled oscillator but is directly Small Form Factor derived from the resonant capacitor voltage signal and actual feedback Universal Design for Multiple Controllers level. This control technique brings several benefits compare to traditional voltage mode controllers like improved line and load Assembling Possibilities transient response and inherent out of zero voltage switching Extremely Low Noload Consumption protection. Table 1. GENERIC PARAMETERS Nominal Output Voltage/Current Device Applications Input Voltage Output Power V Ripple OUT NCP1616, AOI, 90 265 Vac 12 Vdc / 20 A 240 W < 150 mV NCP13992, NCP4306 Server Power Full load Efficiency Operating 230 V AC Temperature Standby Power Cooling Topology Board Size Convection Open 4 point AVG 94.11% < 135 mW 0 40C PFC CrCM 194 108 27 mm 3 Frame, Forced in LLC + SR 7.11 W/inch Frame Semiconductor Components Industries, LLC, 2018 1 Publication Order Number: August, 2018 Rev. 1 EVBUM2566/DHE ATS INK 1 GND S K129 GNDL 10n 220u/35V C 2 C 3 VC C INT GND R 4 22k +17V D26 R 5 2R D3 GND GND 0R R 150 MBR 2H100S FT3G BAT54T1 Q6 D4 1N5408 BS S 138 V bulk D5 MS R 860 L5 90uH, 7447013 F 1 Q3 D14 X21 1N4148 F C PF 13N60 T4A D6 NU F C PF 22N60 1N4148 R 20 D7 R 26 Q4 22k GND 22R Q5 3 F C PF 13N60 D9 4 NU Q7 2 R 36 BC 80716 22k X22 L6 90uH, 7447013 5*2 GND D12 D13 1 MBR 0540 MBR 0540 C 17 R 56 R 63 R 158 220p/1kV 0R 2k 86k R 13 C 13 C 29 1n 0R 220p/1kV +17V R 64 U1 Q8 1 10 BS S 138 GND F B HV 100 2 S T DBY/FAULT R 24 3 8 C 32 C 62 VC NT R L VC C 4 7 D23 F F C NT R L DR V 1k 5 6 C 27 3n9 1n C S /ZC D GND MUR A160 NCP1616A1 10n GND GND INT GND GND GND 10n C 53 IC3 C 34 1 16 100n HV IN VBOOT 15 HB 3 14 GND GND VB/PF C F BMUP 4 R E M 5 12 LLC F B MLOW FOD817B 6 11 LLC C S GND OK1 C 57 7 10 OVP/OT P VC C 8 9 4 P ON/OF FMODE 10n C 54 C 37 NCP13992AIOGE VB 3 100n 100u/25 GND GND INT FOD817B GND GND OK3 5k1 4 R 126 3 C 26 C 50 C 44 NTC 1 10n 470p 100p 330k C 41 C 56 C Y3 C 31 C 40 C 36C 66 100n 100n 220uF/35V GND GND GND GND 2n2/Y1 1n 820n 2u2220n C 43 R 107 4M7 GND GND GND EVBUM2566/D P E 90 265Vac N L AC INPUT strap R 91 R 74 1uF /275Vac 47k R 31 R 69 R 34 C 47 1M 0R 0R R 75 R 61 30k 0R R 137 1uF /275Vac 75k R 1 R 57 C 33 150k 0R 2n2/Y1 2n2/Y1 R 70 R 50 R 48 20k 0R C Y2 C Y1 R 80 330k R 49 VDR H10S 275TS E 200k R 102 680k 1N4148 D17 B1 MR A4007T 3G KBU810 D22 MR A4007T 3G D28 C 15 1uF /275Vac R 72 R 16 R 28 1N4148 R 15 R 6 0R 0R 33k D8 2k7 2k7 R 25 R 43 47 0R + R 33 22k R 66 R 147 4k7 0R R 38 0.05R / 2W R 105 R 104 R 133 86k 27k 5k6 20k R 2 R 47 R 35 R 27 R 18 1M6 1M6 1M8 1M8 1N4148 R 92 R 87 D1 2k7 2k7 C 16 D21 + 100u/450V 4V3 C 38 + 100u/450V R 67 INT 13k C 55 + 100u/450V 5R 6 R 58 R 96 1R 15V R 54 D2 22R R 55 22R + R 62 + VC C INT D19 1R BAT54T1 33nF /2kVdc 33nF /2kVdc C 18 C 7 R 52 R 42 0R 0R VC C INT R 94 0R R 148 L1 1k5 GND 50uH, 750370249 Figure 2. AOI Demo-board Schematic Primary Side (Assembled Options on Standard Revision of the Demo) www.onsemi.com 2