MB39C502-EVBSK-01 High Efficiency Single Output Step Down DC/DC Controller Evaluation Board Operation Manual Doc. No. 002-08685 Rev. *A Cypress Semiconductor 198 Champion Court San Jose, CA 95134-1709 Phone (USA): 800.858.1810 Phone (Intnl): +1 408.943.2600 www.cypress.com Copyrights © Cypress Semiconductor Corporation, 2014-2016. This document is the property of Cypress Semiconductor Corporation and its subsidiaries, including Spansion LLC (“Cypress”). This document, including any software or firmware included or referenced in this document (“Software”), is owned by Cypress under the intellectual property laws and treaties of the United States and other countries worldwide. Cypress reserves all rights under such laws and treaties and does not, except as specifically stated in this paragraph, grant any license under its patents, copyrights, trademarks, or other intellectual property rights. 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You shall indemnify and hold Cypress harmless from and against all claims, costs, damages, and other liabilities, including claims for personal injury or death, arising from or related to any Unintended Uses of Cypress products. Cypress, the Cypress logo, Spansion, the Spansion logo, and combinations thereof, PSoC, CapSense, EZ-USB, F-RAM, and Traveo are trademarks or registered trademarks of Cypress in the United States and other countries. For a more complete list of Cypress trademarks, visit cypress.com. Other names and brands may be claimed as property of their respective owners. MB39C502-EVBSK-01 Evaluation Board Operation Manual, Doc. No. 002-08685 Rev. *A 2 Preface This manual explains how to use the evaluation board. Be sure to read this manual before using the product. For this product, consult with sales representatives or support representatives. Handling and use Handling and use of this product and notes regarding its safe use are described in the manuals. Follow the instructions in the manuals to use this product. Keep this manual at hand so that you can refer to it anytime during use of this product. Notice on this document All information included in this document is current as of the date it is issued. Such information is subject to change without any prior notice. Please confirm the latest relevant information with the sales representatives. Caution of the products described in this document The following precautions apply to the product described in this manual. WARNING Indicates a potentially hazardous situation which could result in death or serious injury and/or a fault in the user’s system if the product is not used correctly. Electric shock, Damage Before performing any operation described in this manual, turn off all the power supplies to the system. Performing such an operation with the power on may cause an electric shock or device fault. Electric shock, Damage Once the product has been turned on, do not touch any metal part of it. Doing so may cause an electric shock or device fault. CAUTION Cuts, Damage Cuts Damage Damage Damage Indicates the presence of a hazard that may cause a minor or moderate injury, damages to this product or devices connected to it, or may cause to loose software resources and other properties such as data, if the device is not used appropriately. Before moving the product, be sure to turn off all the power supplies and unplug the cables. Watch your step when carrying the product. Do not use the product in an unstable location such as a place exposed to strong vibration or a sloping surface. Doing so may cause the product to fall, resulting in an injury or fault. The product contains sharp edges that are left unavoidably exposed, such as jumper plugs. Handle the product with due care not to get injured with such pointed parts. Do not place anything on the product or expose the product to physical shocks. Do not carry the product after the power has been turned on. Doing so may cause a malfunction due to overloading or shock. Since the product contains many electronic components, keep it away from direct sunlight, high temperature, and high humidity to prevent condensation. Do not use or store the product where it is exposed to much dust or a strong magnetic or electric field for an extended period of time. Inappropriate operating or storage environments may cause a fault. Use the product within the ranges given in the specifications. Operation over the specified ranges may cause a fault. MB39C502-EVBSK-01 Evaluation Board Operation Manual, Doc. No. 002-08685 Rev. *A 3 Preface Damage Damage Damage Damage To prevent electrostatic breakdown, do not let your finger or other object come into contact with the metal parts of any of the connectors. Before handling the product, touch a metal object (such as a door knob) to discharge any static electricity from your body. When turning the power on or off, follow the relevant procedure as described in this document. Before turning the power on, in particular, be sure to finish making all the required connections. Furthermore, be sure to configure and use the product by following the instructions given in this document. Using the product incorrectly or inappropriately may cause a fault. Always turn the power off before connecting or disconnecting any cables from the product. When unplugging a cable, unplug the cable by holding the connector part without pulling on the cable itself. Pulling the cable itself or bending it may expose or disconnect the cable core, resulting in a fault. Because the product has no casing, it is recommended that it be stored in the original packaging. Transporting the product may cause a damage or fault. Therefore, keep the packaging materials and use them when re-shipping the product. MB39C502-EVBSK-01 Evaluation Board Operation Manual, Doc. No. 002-08685 Rev. *A 4 Contents 1. Description ..................................................................................................................................................................... 6 2. Evaluation Board Specification .................................................................................................................................... 7 3. Pin Description .............................................................................................................................................................. 8 4. Setup and Checkup ....................................................................................................................................................... 9 5. Component Layout ...................................................................................................................................................... 10 6. Wiring Layout............................................................................................................................................................... 11 7. Circuit Diagram ............................................................................................................................................................ 12 8. Parts List ...................................................................................................................................................................... 13 9. Reference Data ............................................................................................................................................................ 15 10. Initial Settings .............................................................................................................................................................. 22 11. Evaluation board picture............................................................................................................................................. 23 12. Ordering Information ................................................................................................................................................... 25 Revision History ................................................................................................................................................................... 26 Document Revision History ........................................................................................................................................... 26 MB39C502-EVBSK-01 Evaluation Board Operation Manual, Doc. No. 002-08685 Rev. *A 5 1. Description MB39C502 is a single output step down DC/DC controller using external FETs. It achieves the high efficiency with “Enhanced Low Power Mode (LPM) Operation” in light load. In Enhanced LPM, this controller operates that the quiescent current is reduced only 30μA and the switching frequency is fallen by extending on time. These operations enable to improve the efficiency in light load. Internal compensation circuit with current mode architecture and internal boost switch allow reducing the BOM parts and the component area. “Over Current Alerting function” can detect the near over current limitation. The over current alerting level is set 85% for over current limitation level. The function suppresses an excessive margin design through elimination of possibilities of current overflows and enhances the system reliability. MB39C502-EVBSK-01 Evaluation Board Operation Manual, Doc. No. 002-08685 Rev. *A 6 2. Evaluation Board Specification Table 2-1 Evaluation Board Specification Component Symbol Condition Min Typ Max Unit Input Voltage VIN - 4.0 - 25 V Output Voltage VOUT - - 1.2 - V Output Current IOUT SLP_N=H - - 8.54 A Switching Frequency fSW - - 800 - kHz MB39C502-EVBSK-01 Evaluation Board Operation Manual, Doc. No. 002-08685 Rev. *A 7 3. Pin Description Table 3-1 Pin Description Component Input or Output Description VIN Input VOUT Output VDD Input Power supply terminal PWM controller and internal drivers. EN Input Enable input for PWM Controller. When turning on, apply greater than 0.65V and less than 5.5V. When turning off, apply less than 0.25V. SLP_N Input Input terminal transferred to “Enhanced LPM”. Transferred to “Enhanced LPM” by connecting to “L” level. PWRGD Output Open drain output terminal with power good. ALERT_N_VOUT Output Open drain output terminal with over current alerting. PGND - Power supply terminal of DC/DC system. Output of DC/DC system. Power Ground Terminal. MB39C502-EVBSK-01 Evaluation Board Operation Manual, Doc. No. 002-08685 Rev. *A 8 4. Setup and Checkup Supply the DC/DC input power of to the terminal between VIN to PGND. Supply the PWM controller input voltage of 5.0V to VDD terminal. Connect the VOUT terminal to required loading device or measuring instrument. In this time, connect the EN terminal to “L” state. Then, turning on the EN input. Confirming the DC/DC output voltage is setting voltage. Note: The recommended operating conditions of MB39C502 EN pin is 5.5V maximum. Please don’t connect EN to VIN when VIN voltage is over 5.5V. Figure 4-1 Image of Connection MB39C502-EVBSK-01 Evaluation Board Operation Manual, Doc. No. 002-08685 Rev. *A 9 5. Component Layout Figure 5-1 Component Layout Top View MB39C502-EVBSK-01 Evaluation Board Operation Manual, Doc. No. 002-08685 Rev. *A 10 6. Wiring Layout Figure 6-1 Wiring Layout Top Side (Layer 1) Inside (Layer 2) Inside (Layer 3) Bottom Side (Layer 4) MB39C502-EVBSK-01 Evaluation Board Operation Manual, Doc. No. 002-08685 Rev. *A 11 7. Circuit Diagram Figure 7-1 Circuit Diagram R21 PatternShort 1 1 VCC 16 VIN VCC 7 1 2 13 . VDD FB 3 VDD C8 VIN 2 17 ILIM AGND PGND C2-11 C2-10 C2-9 C2-8 C2-7 7 2 C2-6 LX Q1 C2-5 G 8 C2-4 D10 4 S2 1 S3 DRVL 5 S1 6 R27 VCC 2 2 R4 1 1 L1 C2-2 6 C2-1 LX VOUT5 VOUT4 VOUT3 VOUT2 VOUT1 2 CSP C5 C2-3 Q1 1 SLP_N CSN G VIN1 VIN2 VIN3 VIN4 C1-3 8 1 1 DRVH EN C1-2 9 ALERT_N 1 1 VINs VIN 1 . 4 1 . S3 10 14 11 12 1 9 D 2 BST 2 PWRGD S2 15 PWRGD R18 PatternShort 2 S1 3 R15 R14 D3 R29 . R2 1 C1-1 R28 NMT VCC LDO5 1 2 ALERT_N_VOUT EN SLP_N . 2 2 R30 R1-2 C7 1 1 VCC C6 2 . 1 VOUT 2 VIN R1-1 VOUTs PGND1 PGND2 PGND3 PGND4 PGND5 5 M1 1 MB39C502-EVBSK-01 Evaluation Board Operation Manual, Doc. No. 002-08685 Rev. *A PGNDs 12 8. Parts List Table 8-1 Parts List Component Item M1 IC Specification Vender Package Parts Name Remark Cypress QFN-16 MB39C502 Controller Fairchild Power33 FDMC7208S High/Low Side FET Q1 Nch FET VDS=30V, ID=11A RON=8.8mΩ, QG=6.7nC VDS=30V, ID=13.5A RON=5.3mΩ, QG=14nC D3 SBD VF=0.35V at IF=10mA On Semiconductor 1.6 x 0.8mm BAT54XV2T1G BST L1 Inductor 1.0μH(10.6A) ALPS 7.4 x 6.5mm GLMC1R503A LX C1-1 Capacitor 10μF(35V) TDK 2012 C2012X5R1V106K VIN C1-2 Capacitor 10μF(35V) TDK 2012 C2012X5R1V106K VIN C1-3 Capacitor 1.0μF(50V) TDK 1608 C1608X5R1H105K VIN C2-1 * -* -* -* -* -* No Mount * C2-2 * -* -* -* -* -* No Mount * C2-3 Capacitor 47μF(10V) TDK 2012 C2012X5R1A476M VOUT C2-4 Capacitor 47μF(10V) TDK 2012 C2012X5R1A476M VOUT C2-5 Capacitor 47μF(10V) TDK 2012 C2012X5R1A476M VOUT C2-6 Capacitor 47μF(10V) TDK 2012 C2012X5R1A476M VOUT C2-7 Capacitor 47μF(10V) TDK 2012 C2012X5R1A476M VOUT C2-8 Capacitor 47μF(10V) TDK 2012 C2012X5R1A476M VOUT C2-9 Capacitor 47μF(10V) TDK 2012 C2012X5R1A476M VOUT C2-10 Capacitor 47μF(10V) TDK 2012 C2012X5R1A476M VOUT C2-11 Capacitor 10μF(10V) TDK 1608 C1608X5R1A106K VOUT C5 Capacitor 0.47μF(35V) TDK 1005 C1005X5R1V474K BST C6 Capacitor 1.0μF(35V) TDK 1005 C1005X5R1V105K VIN C7 Capacitor 1.0μF(35V) TDK 1005 C1005X5R1V105K VCC C8 Capacitor 4.7μF(10V) TDK 1005 C1005X5R1A475K VDD R1-1 * Resistor * 0Ω(Jumper) * KOA * 1005 * RK73Z1E * FB * R1-2 Resistor 21.5kΩ TE Connectivity 1005 CPF0402B21K5E1 FB R2 Resistor 30.1kΩ TE Connectivity 1005 CPF0402B30K1E1 FB R4 Resistor 2mΩ SSM 2012 KRL2012MR002F RSENSE R14 * Resistor * 330kΩ * KOA * 1005 * RK73B1ETTP334J * PWRGD * R15 * Resistor * 330kΩ * KOA * 1005 * RK73B1ETTP334J * ALERT_N * MB39C502-EVBSK-01 Evaluation Board Operation Manual, Doc. No. 002-08685 Rev. *A 13 Parts List Component Item Specification Vender Package Parts Name Remark R18 - - - - - No Mount R21 * -* -* -* -* -* No Mount * R27 * Resistor * 220kΩ * KOA * 1005 * RK73B1ETTP224J * EN * R28 * -* -* -* -* -* No Mount * R29 * Resistor * 220kΩ * KOA * 1005 * RK73B1ETTP224J * SLP_N * R30 Resistor 10Ω SSM 1005 RG1005PD100 VDD - Pin 3A HIROSE 2.54 HIF3H-20PB-2.54DSA - * : parts on buck side MB39C502-EVBSK-01 Evaluation Board Operation Manual, Doc. No. 002-08685 Rev. *A 14 9. Reference Data Figure 9-1 Efficiency vs Output Current, VOUT ; 1.2V-Setting Efficiency vs Output Current, VOUT ;1.2V-Setting 7.4V Normal 12.0V Normal 20.0V Normal 7.4V LPM 12.0V LPM 20.0V LPM 100% 90% 80% Efficiency 70% 60% 50% 40% 30% 20% 10% 0% 0.0001 0.001 0.01 0.1 Output Current / A MB39C502-EVBSK-01 Evaluation Board Operation Manual, Doc. No. 002-08685 Rev. *A 1 10 15 Reference Data Figure 9-2 Load regulation Output Voltage vs Output Current, VOT ; 1.2V-Setting Output Voltage vs Output Current, VOUT ;1.2V-Setting 7.4V Normal 12.0V Normal 20.0V Normal 7.4V LPM 12.0V LPM 20.0V LPM 1.212 Output Voltage / V 1.208 1.204 1.200 1.196 1.192 1.188 0.0001 0.001 0.01 0.1 Output Current / A 1 10 Figure 9-3 Start-up (EN=0V=>5V) VIN=7.4V,VOUT=1.2V,IOUT=0.05A, SLP_N=H MB39C502-EVBSK-01 Evaluation Board Operation Manual, Doc. No. 002-08685 Rev. *A 16 Reference Data Figure 9-4 Shutdown (EN=5V=>0V) VIN=7.4V,VOUT=1.2V,IOUT=0.05A, SLP_N=H MB39C502-EVBSK-01 Evaluation Board Operation Manual, Doc. No. 002-08685 Rev. *A 17 Reference Data Figure 9-5 Load step response (VIN=7.4V,VOUT=1.2V) IOUT=0.05A to 7.69A, SLP_N=H Figure 9-6 Load step response (VIN=7.4V,VOUT=1.2V) IOUT=7.69A to 0.05A, SLP_N=H MB39C502-EVBSK-01 Evaluation Board Operation Manual, Doc. No. 002-08685 Rev. *A 18 Reference Data Figure 9-7 Switching waveform (VIN=7.4V,Iout=8.54A) , SLP_N=H Figure 9-8 Switching waveform (VIN=7.4V,Iout=0.05A), SLP_N=H MB39C502-EVBSK-01 Evaluation Board Operation Manual, Doc. No. 002-08685 Rev. *A 19 Reference Data Figure 9-9 Switching waveform (VIN=7.4V,Iout=0.3A), LPM at SLP_N=L Figure 9-10 Switching waveform (VIN=7.4V,Iout=0.01A) , LPM at SLP_N=L MB39C502-EVBSK-01 Evaluation Board Operation Manual, Doc. No. 002-08685 Rev. *A 20 Reference Data Increase Temperature of External FET Figure 9-11 Increase Temperature 1.2V Output Voltage, using “FDMC7208S” FET. Increase Temperature vs. Output Current 160 VIN=25.0V Increase Temperature / degC 140 120 VIN=20.0V 100 80 VIN=12.0V 60 VIN=7.4V 40 20 0 4.0 5.0 6.0 7.0 8.0 9.0 Output Current / A MB39C502-EVBSK-01 Evaluation Board Operation Manual, Doc. No. 002-08685 Rev. *A 10.0 11.0 12.0 21 10. Initial Settings Output Voltage VOUT R1Ω R2Ω 23.6 103 33 103 VREF V 0.7 1.2V R2Ω 33 103 Current Limit at VIN=7.4V ILIMIT IL 0.024V ΔI L A VOUT V 300 10 9 0.024 1.26 1.2 300 10 9 12.45A R4Ω 2 2 LH 2 2 10 3 2 1.0 10 6 VIN V VOUT V VOUT V 1.26A LH VIN V fSW Hz Over Current Alerting Threshold Level at VIN=7.4V 0.024V VOUT V 300 10 9 I A 0.85 L I ALERT 2 LH 2 R4 0.024 1.2 300 10 9 1.26 0.85 10.68A 3 6 2 2 1.0 10 2 10 MB39C502-EVBSK-01 Evaluation Board Operation Manual, Doc. No. 002-08685 Rev. *A 22 11. Evaluation board picture Figure 11-1 Evaluation board Picture (top) MB39C502-EVBSK-01 Evaluation Board Operation Manual, Doc. No. 002-08685 Rev. *A 23 Evaluation board picture Figure 11-2 Evaluation board Picture (back) MB39C502-EVBSK-01 Evaluation Board Operation Manual, Doc. No. 002-08685 Rev. *A 24 12. Ordering Information Table 12-1 Ordering Information Part number EVB revision Note MB39C502-EVBSK-01 Rev 1.0 --- MB39C502-EVBSK-01 Evaluation Board Operation Manual, Doc. No. 002-08685 Rev. *A 25 Revision History Document Revision History Document Title: MB39C502-EVBSK-01 High Efficiency Single Output Step Down DC/DC Controller Evaluation Board Operation Manual Document Number: 002-08685 Revision Issue Date Origin of Description of Change Change ** 11/19/2014 ATTS Initial release. *A 04/29/2016 ATTS Migrated to Cypress format. MB39C502-EVBSK-01 Evaluation Board Operation Manual, Doc. No. 002-08685 Rev. *A 26