ADP1048DC1-EVALZ

ADP1047/ADP1048 Daughter Card Evaluation Board ADP1047/8DC1-EVALZ PRD1372 FEATURES ADP1047/ADP1048 Daughter Card with I2C interface Retrofit controller to any topology or existing design Software GUI Low component count ADP1047/ADP1048 EVALUATION BOARD OVERVIEW The daughter card evaluation board allows the ADP1047/ADP1048 to be quickly evaluated in any existing switching power supply application. Using the daughter card and its accompanying software, the IC can be interfaced to any PC running Windows 2000/NT/XP/Vista/7 via the computers USB port. The daughter card can be connected to any existing ADP1047/ADP1048 evaluation board or reference design. It can also be connected to any power supply as a replacement for the existing controller. The daughter card has a connector through which the pin outs of the ADP1047/ADP1048 can be probed. The software GUI allows control and read/write functionality of the ADP1047/adp1048 internal registers to modify, for example, the PWM settings or over current protection limits. Figure 1 - Daughter card with pin outs of ADP1047/ADP1048 Rev. 1.0 Reference designs are as supplied “as is” and without warranties of any kind, express, implied, or statutory including, but not limited to, any implied warranty of merchantability or fitness for a particular purpose. No license is granted by implication or otherwise under any patents or other intellectual property by application or use of reference designs. Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Analog Devices reserves the right to change devices or specifications at any time without notice. Trademarks and registered trademarks are the property of their respective owners. Reference designs are not authorized to be used in life support devices or systems. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2009 Analog Devices, Inc. All rights reserved. ADP1047/8DC1-EVALZ PRD1372 TABLE OF CONTENTS Features ....................................................................................................................................................................................... 1  EVALUATION BOARD HARDWARE ............................................................................................................................................ 3  CONNECTORS ............................................................................................................................................................................ 4  REFURNISHING AND EXISTING DESIGN WITH ADP1047/ADP1048 DAUGHTER CARD....................................................... 5  Additional key points and checklist: .............................................................................................................................................. 6  SCHEMATIC ............................................................................................................................................................................. 7  LAYOUT ....................................................................................................................................................................................... 8  BILL OF MATERIALS ................................................................................................................................................................. 11  Notes .......................................................................................................................................................................................... 12  Rev. 1.3 | Page 2 of 12 ADP1047/8DC1-EVALZ PRD1372 Figure 2 - Simplified Block Diagram EVALUATION BOARD HARDWARE Figure 3 - Connection diagram of daughter card to PC via I2C interface (USB dongle) Rev. 1.3 | Page 3 of 12 ADP1047/8DC1-EVALZ PRD1372 CONNECTORS The pin outs of the USB interface are given below: Pin Evaluation Board Function 1 5V 2 SCL 3 SDA 4 Ground Table 1 - I2C connector pin out descriptions Figure 4 – I2C connector (pin1 on left) Figure 5 - Detailed description of pin outs Rev. 1.3 | Page 4 of 12 ADP1047/8DC1-EVALZ PRD1372 REFURNISHING AND EXISTING DESIGN WITH ADP1047/ADP1048 DAUGHTER CARD To evaluate the IC with an existing power supply, a jumper cable can be used. Figure 6 and Figure 7 demonstrate how a jumper cable is connected on one end to the daughter card and the other end to the respective function of the pin on the power supply. Care must be taken to ensure that the traces/wires that are connected at their respective sensing points are short and are not routed through any high frequency traces (switching nodes) of the power stage that would result in poor signal integrity due to noise injection or EMI. A spread of wires must definitely be avoided as this increases the probability of injected noise due to bigger loop areas and common impedance coupling between the power ground and the analog and digital grounds. Note: The ADP1047/ADP1048 provides control and logic signals for the power switches. External drivers need to be used to turn on/off the switches in the power stage of the design. Figure 6 – Daughter card connection Figure 7 – Example of a retrofitted system with daughter card on left and power stage on the right. Rev. 1.3 | Page 5 of 12 ADP1047/8DC1-EVALZ PRD1372 ADDITIONAL KEY POINTS AND CHECKLIST: 1. The daughter card is powered using the USB cable. The 3.3V LDO present on the PCB converts the 5V to 3.3V which supplies power to the ADP1047/ADP1048. Alternately an isolated power supply 5V or 12V (referenced to AGND) may be used and connected to pins on the daughter card. The I2C connecter also has the SDA and SCL pins which are used for serial communication to the ADP1047/ADP1048 using the software GUI. 2. The RTD pin is referenced to AGND and the thermistor must be ideally placed close to the hottest part of the power stage for monitoring over temperature. Leave open if not used. 3. Connect PS_ON to 3.3V using a switch or permanently connected to 3.3V. If permanently connected then the power supply can be turned on using software PS_ON in the GUI. 4. CS+ and CS- (differential input) must be connected across the current sense resistor. Care must be taken not to exceed 150mV as it exceeds the maximum range of the ADC. 5. The voltage dividers with 10 to 1 ratio are on the daughter card for sensing the input voltage VAC and output voltage VFB. The voltage divider combined with the resistor on the main board can provide 1V at the divider at the nominal output voltage to provide enough range for trimming. Care must be taken not to exceed 1.6V as it exceeds the maximum range of the ADC. Rev. 1.3 | Page 6 of 12 Figure 8 – Daughter card schematic Rev. 1.3 | Page 7 of 12 1 2 3 4 PGND AGND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 J2 Aardv ark VAC NC1 NC2 NC3 INRUSH PGND1 CSCS+ PWM PGND2 PWM2 PGND3 ILIM PGND4 PGOOD AC_OK SY NC NC4 12V/5V PGND5 NC5 PGND6 IBAL PGND7 RTD SDA SCL 3.3V PSON AGND VFB OVP J1 ADP1047_DC 5V SCL SDA AGND RTD SDA SCL 3.3V PSON 12V PGOOD AC_OK SY NC PWM2 PWM INRUSH PGND 0 R16 C5 DNI 0 R5 90.9k R13 DNI DNI AGND R6 10k C15 C6 DNI C8 DNI C7 C3 DNI R3 90.9k DNI R7 10k 0.1% 1 1 PGND C2 DNI R8 10k 0.1% R2 10k DGND PGND DNI R15 10k R14 10k C14 C1 R1 90.9k 0 R4 10k C17 DNI PGND C16 10pF PGND R22 5V 12V C4 1000pF 2 2 D2 1N4148 D1 1N4148 VCORE VFB OVP IBAL CS+ CS- ILIM VAC 5 6 8 7 2 SD ERR IN IN SCL SDA RTD GND NR OUT OUT 4 3 1 2 R21 2.2k PGND ADD RES PSON PWM PWM2 AC_OK PGOOD INRUSH AGND R9 0 3.3V 21 23 11 13 14 15 16 17 18 19 20 22 AGND C10 0.1uF C11 1uF R11 49.9k 0.1% PSON PWM PWM2 AC_OK PGOOD INRUSH SY NC SCL SDA RTD AGND R12 2.2k U1 ADP1047 / ADP1048 SY NC U2 ADP3303 D6 LED AGND RED AGND + 1 AGND C9 10uF 1 1 C13 0.1uF 12 3 4 7 9 8 6 2 AGND 1 AGND 10 24 VDD PGND 5 C12 0.1uF DGND 3.3V R20 DNP R18 2.2k R19 2.2k 3.3V ADP1047/8DC1-EVALZ PRD1372 SCHEMATIC ADP1047/8DC1-EVALZ PRD1372 LAYOUT Figure 10 – Top silkscreen Figure 11 - Top Layer, Rev. 1.3 | Page 8 of 12 ADP1047/8DC1-EVALZ PRD1372 Figure 9 - Power Layer, dimensions in inches Figure 12 –Bottom Silkscreen Figure 13 – Bottom layer Rev. 1.3 | Page 9 of 12 ADP1047/8DC1-EVALZ PRD1372 Figure 14 – Inner layer1 layout Figure 15– inner layer2 layout Rev. 1.3 | Page 10 of 12 ADP1047/8DC1-EVALZ PRD1372 BILL OF MATERIALS Part Reference Part Description C1 DNI C2 DNI C3 DNI C4 CAP CER 1000pF 50V 5% COG C5 DNI C6 DNI C7 DNI C8 DNI C9 CAP CER 10uF 25V +/‐20% X5R Manufacture Mfg Part No Murata Electronics GRM2165C1H102JA01D Panasonic ‐ ECG ECJ‐4YB1E106M C10 CAP CER 0.1uF 50V 10% X7R Murata Electronics GRM21BR71H104KA01L C11 CAP CER 1.0uF 50V 10% X7R Murata Electronics GRM32RR71H105KA01L C12 CAP CER 0.1uF 50V 10% X7R Murata Electronics GRM21BR71H104KA01L C13 CAP CER 0.1uF 50V 10% X7R Murata Electronics GRM21BR71H104KA01L C14 DNI C15 DNI C16 DNI D1 DIODE SWITCH 100V 150MA Micro Commercial 1N4148WTPMSCT‐ND D2 DIODE SWITCH 100V 150MA Micro Commercial 1N4148WTPMSCT‐ND D6 LED SUPER RED CLEAR 75MA 1.7V SMD CHICAGO MINIATURE LIGHTING CMD15‐21SRC/TR8 R1 RES 90.9K OHM 1/8W 1% SMD Any Any R2 RES 10K OHM 1/8W 1% SMD R3 RES 90.9K OHM 1/8W 1% SMD Any R4 RES 10K OHM 1/8W 1% SMD Any R5 RES 90.9K OHM 1/8W 1% SMD Any R6 RES 10K OHM 1/8W 1% SMD Any R7 RES 10K OHM 1/8W 0.1% SMD Any R8 RES 10K OHM 1/8W 0.1% SMD Any R9 RES 0.0 OHM 1/8W 5% SMD Any R11 RES 49.9K OHM 1/8W 0.1% SMD Any R12 RES 2.20K OHM 1/8W 1% SMD Any R13 RES 0.0 OHM 1/8W 5% SMD Any R14 RES 10K OHM 1/8W 1% SMD Any R15 RES 10K OHM 1/8W 1% SMD Any R16 RES 0.0 OHM 1/8W 5% SMD Any R18 RES 2.20K OHM 1/8W 1% SMD Any R19 RES 2.20K OHM 1/8W 1% SMD Any R20 RES 2.20K OHM 1/8W 1% SMD Any R21 RES 2.20K OHM 1/8W 1% SMD Any R22 RES 0.0 OHM 1/8W 5% SMD Any U1 Digital PFC Controller  Analog Devices ADP1047 U2 Low Dropout Regulators Analog Devices ADP3303 Rev. 1.3 | Page 11 of 12 ADP1047/8DC1-EVALZ PRD1372 NOTES ©2009 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. Error! Unknow Rev. 1.3 | Page 12 of 12