DN06024/D Design Note – DN06024/D Universal AC 40 W Programmable Output Device Application Input Voltage Output Power Topology I/O Isolation NCP1217 Programmable ACDC Adapter Universal 88-269 Vac 40 Watt Flyback 3 kV Other Specifications Output Voltage (4 Possible Configurations) Ripple (50 MHz BW) Nominal Current Max Current Min Current Output 1 Output 2 Output 3 Output 4 +9 Vdc ±5% +12 Vdc ±5% +16 Vdc ±5% +24 Vdc ±5% <90 mVpp 4.0 A 4.5 A 0 <120 mVpp 3.33 A 3.38 A 0 <160 mVpp 2.5 A 3.0 A 0 <240 mVpp 1.70 A 1.70 A 0 PFC (Yes/No) NO Minimum Efficiency 80% Target Inrush Limiting / Fuse 80 A max / 1 A fuse Operating Temp. Range 0 to +40° C Cooling Method/Supply Orientation Case Convection Output Voltage Control Adapter Program Plug Others Leakage Current: <3.5mA at 115VAC/60Hz and at 230VAC/50Hz (refer to EN60950) OVP: 25% above the Output Voltage specified. OCP: The Max Current is short circuit current trip point. The unit must be capable of supplying up to and including the Max Current for 10 minutes. The Nominal Current is the maximum continuous operating current. Circuit Description Key Features This programmable output voltage adapter is designed around the NCP1217 PWM switcher. This flyback converter operated in the DCM for the full range of output to 44 watts. This permits the primary current limit to function as the secondary power limit. y Constant power limit of 44 watts. y Output voltage is programmed with jumpers y 100 kHz Switchmode controller. y Frequency dithering reduces EMI signature. y Low standby power consumption. The adapter is designed to provide an output of 9 Vdc nominal with no jumper connections. This gives the system the security of a low voltage default output. A single jumper may be installed in only one of the three positions shown to program the output. The current/power sense resistor section has resistors R10 and R11 to permit “break-off” trimming options. The schematic shows optional Y caps in pink for systems with a three-wire power cord. The earth return provides additional margin for applications that require more EMI filtering or earth ground safety connection. May 2007, Rev. 0 www.onsemi.com 1 DN06024/D Schematic May 2007, Rev. 0 www.onsemi.com 2 DN06024/D Magnetics Design Data sheet Project / Customer Description: Schematic Ref. Des: 40 Watt Adapter Differential Mode Inductor L1 Bobbin: Vertical 8-Pin Core: EE4-2211 J Core Gap: none Inductance Magnetizing: 4.3 mH ±5% 100 kHz Pin 1-4, 5-8 Inductance Leakage: 50 uH ±5% 100 kHz Pin 1-4, 5-8 shorted. Windings (in order) Layer Winding W1 Turns Magnetics Inc. Size No of Wires Material 35 1 W1 7 22 awg 1 Isonol180 2 W1 7 22 awg 1 Isonol180 3 W1 7 22 awg 1 Isonol180 4 W1 7 22 awg 1 Isonol180 7 22 awg 1 Isonol180 5 W1 W2 35 1 W2 7 22 awg 1 Isonol180 2 W2 7 22 awg 1 Isonol180 3 W2 7 22 awg 1 Isonol180 4 W2 7 22 awg 1 Isonol180 5 W2 7 22 awg 1 Isonol180 4 kVac 1 s. HiPot: P-S Schematic May 2007, Rev. 0 Lead Pin-out www.onsemi.com 3 DN06024/D Magnetics Design Data sheet Project / Customer Description: Schematic Ref. Des: 40 Watt Adapter Common Mode Inductor L2 Bobbin: none Core: T44D Core Gap: none Inductance Magnetizing: 70 uH ±5% 100 kHz Pin 1-2 Inductance Leakage: NA ±5% 100 kHz -. Windings (in order) Layer Winding Turns W1 1 MicroMetals Size No of Wires Material 29 awg 5 Isonol180 30 W1 30 Magnetics Design Data sheet Project / Customer Description: Schematic Ref. Des: 40 Watt Adapter Output filter Inductor L3 Bobbin: none Core: T44C Core Gap: none Inductance Magnetizing: 1 uH ±5% 100 kHz Pin 1-2 Inductance Leakage: NA ±5% 100 kHz -. Windings (in order) Layer Winding MicroMetals Turns Size No of Wires Material 4 20 awg 5 Isonol180 W1 1 May 2007, Rev. 0 W1 www.onsemi.com 4 DN06024/D Magnetics Design Data sheet Project / Customer Description: Schematic Ref Des: 40 Watt Adapter Transformer T1 Bobbin: Horizontal 10-Pin Core: EE-4 2530 P Core Gap: Approx. 2 mm Inductance Magnetizing: 100 uH ±5% 100 kHz Pin 1-3. Inductance Leakage: 1.24 uH ±5% 100 kHz Pin 1-3, with 4-5, 6-10 shorted. Windings (in order) Layer Winding Magnetics Inc. Turns Size No of Wires Material W1 23 26 awg 1 Isonol180 Tape 3 0.05 3 W2 10 26 awg 4 Tape 1 0.05 W3 10 26 awg Tape 3 0.05 7 W4 13 26 awg 8 Tape 1 0.05 9 W5 23 26 awg 10 Tape 3 0.05 P-S 4 kVac 1 s. P-Core 4 kVac 1 s. S-Core 4 kVac 1 s. W1 1 2 PVC W2 3 Isonol180 PVC W3 5 6 3 Isonol180 PVC W4 1 Isonol180 1 Isonol180 W5 PVC HiPot: Schematic 1 Lead Pin-out T1 100 uH ±10% W1-23T AWG 26 x1 2 W5-23T AWG 26 x1 10 3 W2-10T AWG 26 x3 5 W4-13T AWG 26 x1 7 9 4 W3-10T AWG 26 x3 5 6 4 7 3 8 2 9 1 10 6 May 2007, Rev. 0 Bottom View www.onsemi.com 5 DN06024/D 1 1 © 2007 ON Semiconductor. Disclaimer: ON Semiconductor is providing this design note “AS IS” and does not assume any liability arising from its use; nor does ON Semiconductor convey any license to its or any third party’s intellectual property rights. This document is provided only to assist customers in evaluation of the referenced circuit implementation and the recipient assumes all liability and risk associated with its use, including, but not limited to, compliance with all regulatory standards. ON Semiconductor may change any of its products at any time, without notice. Design note created by Dale Tittensor, e-mail: [email protected] May 2007, Rev. 0 www.onsemi.com 6