MB39C831-EVB-02

MB39C831-EVB-02 Thermal Energy Harvesting Evaluation Board Operation Guide Doc. No. 002-08635 Rev. *A Cypress Semiconductor 198 Champion Court San Jose, CA 95134-1709 http://www.cypress.com Copyrights Copyrights © Cypress Semiconductor Corporation, 2015-2016. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a Cypress product. Nor does it convey or imply any license under patent or other rights. Cypress products are not warranted nor intended to be used for medical, life support, life saving, critical control or safety applications, unless pursuant to an express written agreement with Cypress. Furthermore, Cypress does not authorize its products for use as critical components in lifesupport systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges. Trademarks All other trademarks or registered trademarks referenced herein are property of the respective corporations. Source Code Any Source Code (software and/or firmware) is owned by Cypress Semiconductor Corporation (Cypress) and is protected by and subject to worldwide patent protection (United States and foreign), United States copyright laws and international treaty provisions. Cypress hereby grants to licensee a personal, non-exclusive, non-transferable license to copy, use, modify, create derivative works of, and compile the Cypress Source Code and derivative works for the sole purpose of creating custom software and or firmware in support of licensee product to be used only in conjunction with a Cypress integrated circuit as specified in the applicable agreement. Any reproduction, modification, translation, compilation, or representation of this Source Code except as specified above is prohibited without the express written permission of Cypress. Disclaimer CYPRESS MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Cypress reserves the right to make changes without further notice to the materials described herein. Cypress does not assume any liability arising out of the application or use of any product or circuit described herein. Cypress does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress’ product in a life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges. Use may be limited by and subject to the applicable Cypress software license agreement. MB39C831-EVB-02 Thermal Energy Harvesting Evaluation Board Operation Guide, Doc. No. 002-08635 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, please 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. MB39C831-EVB-02 Thermal Energy Harvesting Evaluation Board Operation Guide, Doc. No. 002-08635 Rev. *A 3 Cautions 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, Before performing any operation described in this manual, turn off all the power supplies to the system. Damage Electric shock, Damage CAUTION Cuts, Damage Performing such an operation with the power on may cause an electric shock or device fault. 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. 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 lose 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. Cuts Damage 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. Damage 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. Damage Operation over the specified ranges may cause a fault. 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. MB39C831-EVB-02 Thermal Energy Harvesting Evaluation Board Operation Guide, Doc. No. 002-08635 Rev. *A 4 Cautions Damage 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. Damage 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. Damage 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. MB39C831-EVB-02 Thermal Energy Harvesting Evaluation Board Operation Guide, Doc. No. 002-08635 Rev. *A 5 Contents 1. Evaluation Board Specification .................................................................................................................................... 7 2. Block Diagram................................................................................................................................................................ 8 3. PIN Descriptions ............................................................................................................................................................ 9 3.1 3.2 4. Setup and Verification ................................................................................................................................................. 11 4.1 4.2 5. Input/OutputPin Descriptions ................................................................................................................................. 9 Jumper, Switch Descriptions ............................................................................................................................... 10 Constant Mode .................................................................................................................................................... 11 Charge Mode (MPPT Mode) ................................................................................................................................ 13 Layout ........................................................................................................................................................................... 16 5.1 Component Layout .............................................................................................................................................. 16 6. Circuit ........................................................................................................................................................................... 20 7. Component List ........................................................................................................................................................... 21 8. Application Notes ........................................................................................................................................................ 23 8.1 8.2 8.3 Harvester ............................................................................................................................................................. 23 Power Requirement in Start-Up in Constant Voltage Mode ................................................................................. 23 Waveform of VDD/VOUT Voltages in Start-up in Constant Voltage Mode .......................................................... 24 9. EVB Picture .................................................................................................................................................................. 25 10. Ordering Information ................................................................................................................................................... 27 Revision History ................................................................................................................................................................... 28 Document Revision History ........................................................................................................................................... 28 MB39C831-EVB-02 Thermal Energy Harvesting Evaluation Board Operation Guide, Doc. No. 002-08635 Rev. *A 6 1. Evaluation Board Specification The MB39C831-EVB-02 is the evaluation board for the energy harvesting IC, MB39C831. This evaluation board is capable of accepting solar or thermal electric power source. Table 1-1. Evaluation Board Specification Parameter Symbol Condition Min Typ Max Unit Input voltage VDD - 0.3 - 4.75 V Input current VDD - 0.75 - 5(*1) mA Output voltage VOUT See Table4-3 3.0 - 5 V VDD=0.6V, VOUT=3.3V 8 - - mA VDD=3.0V, VOUT=3.3V 80 - - mA - - 240(*1) mA Output current VOUT VDD=3.1V, VOUT=3.3V VDD=3.4V, VOUT=3.6V VDD=3.9V, VOUT=4.1V *1: This parameter is not be specified. This should be used as a reference to support designing the circuits. Please see the MB39C831 datasheet (DS405-00014) for more information. Board size: 80mm × 80mm, Layer: 4-layer board MB39C831-EVB-02 Thermal Energy Harvesting Evaluation Board Operation Guide, Doc. No. 002-08635 Rev. *A 7 2. Block Diagram Figure 2-1. Block Diagram JP2 CN3 VCC CN4 CN7 GND GND JP5 JP3 LX VDD VCC L1 VST VDD GND VCC Start Up D1 C2 MPPT_ENA VCC CN2 C12 (47nF) C1 CN1 C3 CN5 VDD VOUT JP10 R9(1M) VCC JP9 R8(1M) VCC JP8 R7(1M) VCC JP7 R6(1M) JP6 R5(1M) VCC ENA S2 VOUT_S R4 Boost DCDC Converter Control LOGIC VOUT JP4 CN6 C9 S1 FB S0 DET0 GND DET1 C10 MPPT_OUT MPPT Control R2 R1 R3 CSH2 C8 CN8 GND C7 CSH1 CSH0 C6 C5 MPPT_IN C4 CN9 GND MB39C831-EVB-02 Thermal Energy Harvesting Evaluation Board Operation Guide, Doc. No. 002-08635 Rev. *A 8 3. PIN Descriptions 3.1 Input/OutputPin Descriptions Table 3-1. Input/Output PinDescriptions Pin No. Pin Name I/O Description CN1 VDD I Outside power input pin TP1 VDD_S I VDD sense pin TP2 VDD_F I VDD force pin TP3 GND_S - GND pin for VDD sense pin CN3 VCC O Power output pin for control CN5 VOUT O DCDC converter output pin TP5 VOUT_S O VOUT sense pin TP6 VOUT_F O VOUT force pin TP7 GND_S - GND pin for VOUT sense pin TP9 VST O Start-up power output pin TP10 DET0 O Status notification output pin TP11 DET1 O Status notification output pin TP17 S0 I Preset voltage setting, or MPPT setting input TP18 S1 I Preset voltage setting, or MPPT setting input TP19 S2 I Preset voltage setting, or MPPT setting input TP20 ENA I DCDC converter control input pin TP21 MPPT_ENA I MPPT control input pin CN2, CN4, CN6, CN7, CN8, CN9, TP4, TP8 GND - GND pins MB39C831-EVB-02 Thermal Energy Harvesting Evaluation Board Operation Guide, Doc. No. 002-08635 Rev. *A 9 PIN Descriptions 3.2 Jumper, Switch Descriptions Table 3-2. Jumper, Switch Descriptions Initial Setting Jumper Description Constant Mode Charge Mode JP2 Pull-up resistance setting for SW1-1 - SW1-5 Short Short JP3 Loop setting for VDD pin and LX pin Short Short JP4 To connect VOUT pin and C9 capacitor Open Short JP5 To connect FB pin and MPPT_OUT pin Open Short JP6 Pull-up resistance setting for S0 pin Short Short JP7 Pull-up resistance setting for S1 pin Short Short JP8 Pull-up resistance setting for S2 pin Short Short JP9 To connect ENA pin and Pull-down resistance Open Open JP10 To connect MPPT_ENA pin and Pull-down resistance Short Open SW1-1 Pull-down /Pull-up setting for S0 pin Off (S0=L) Off (S0=L) SW1-2 Pull-down /Pull-up setting for S1 pin Off (S1=L) Off (S1=L) SW1-3 Pull-down /Pull-up setting for S2 pin Off (S2=L) Off (S2=L) SW1-4 Pull-down /Pull-up setting for ENA pin On (ENA=H) On (ENA=H) SW1-5 Pull-down /Pull-up setting for MPPT_ENA pin Off On (MPPT_ENA=L) (MPPT_ENA=H) Table 3-3. Preset Output Voltage Settings of Constant Mode MPPT_ENA S2 (SW001) S1 (SW002) S0 (SW003) Preset Output Voltage[V] L L L L 3.0 (Initial Setting) L L L H 3.3 L L H L 3.6 L L H H 4.1 L H L L 4.5 L H L H 5.0 Table 3-4. MPPT Settings of Charge Mode MPPT_ENA S2 (SW001) S1 (SW002) S0 (SW003) MPPT Setting [%] H L L L 50 (Initial Setting) H L L H 55 H L H L 60 H L H H 65 H H L L 70 H H L H 75 H H H L 80 H H H H 85 MB39C831-EVB-02 Thermal Energy Harvesting Evaluation Board Operation Guide, Doc. No. 002-08635 Rev. *A 10 4. Setup and Verification 4.1 Constant Mode 1. Set the DIP switches and the jumper pins as shown in the Figure 4-1 and the Table 4-1(see the Table 4-2 for the initial settings of the constant mode). 2. Input a DC voltage into CN1 (VDD). In order to startup the boost converter, the starting power is required as shown in the section 9.2. Input enough power into CN1 (VDD). 3. 3V is output to CN5 (VOUT). 4. To change the output voltage, change the switch settings (see the Table 4-2). MB39C831-EVB-02 Thermal Energy Harvesting Evaluation Board Operation Guide, Doc. No. 002-08635 Rev. *A 11 Setup and Verification Figure 4-1. Constant Mode Setting DET0 Monitor Pin DET1 Monitor Pin VCC Pin GND_S Monitor Pin VDD_S Monitor Pin VDD_F Monitor Pin GND Pin JP2 SW1-5[OFF] MPPT_ENA SW1-4[ON] ENA SW1-3[OFF] S2 SW1-2[OFF] S1 SW1-1[OFF] S0 ON ⇔ OFF JP10 JP9 JP5 JP8 TP4 TP3 TP1 TP2 JP3 JP7 JP6 MPPT_ENA Monitor Pin ENA Monitor Pin S2 Monitor Pin S1 Monitor Pin S0 Monitor Pin Solar Cell, Peltie Element, etc. VDD VOUT TP6 TP5 TP7 TP8 JP4 VOUT_F Monitor Pin VOUT_S Monitor Pin GND_S Monitor Pin GND Pin ：GND Pin ：JP Short ：JP Open Table 4-1. MPPT_ENA, ENA Settings of Constant Mode MPPT_ENA ENA Status SW1-5 JP10 SW1-4 JP9 Off Short Off Short Constant Voltage mode, VOUT Disable Off Short On Open Constant Voltage mode, VOUT Enable MB39C831-EVB-02 Thermal Energy Harvesting Evaluation Board Operation Guide, Doc. No. 002-08635 Rev. *A 12 Setup and Verification Table 4-2. Preset Output Voltage Settings of Constant Mode S2 SW1-3 4.2 S1 JP8 S0 SW1-2 JP7 SW1-1 Preset Output Voltage[V] JP6 Off Short Off Short Off Short 3.0 (Initial Setting) Off Short Off Short On Open 3.3 Off Short On Open Off Short 3.6 Off Short On Open On Open 4.1 On Open Off Short Off Short 4.5 On Open Off Short On Open 5.0 On Open On Open Off Short Forbidden On Open On Open On Open Forbidden Charge Mode (MPPT Mode) 1. Set the DIP switches and the jumper pins as shown in the Figure 4-2 (see the Table 4-3) for the initial settings of the charge mode). 2. Connect a Li-ion battery not lower than 2.6V to CN5 (VOUT). 3. Input a DC voltage into CN1 (VDD). See the "Example for the input voltage calculation". 4. Charging is stared to the Li-ion battery. The battery is charged between 2.6V and 4V, when the battery reaches 4V, charge is stopped. 5. To change the MPPT setting, change the switch settings (see the Table 4-4) Example for the input voltage calculation Release voltage of solar cell: 1[V] MPPT setting: 50 [%] Input voltage (VDD) [V] =1[V] / (50/100) =0.5[V] MB39C831-EVB-02 Thermal Energy Harvesting Evaluation Board Operation Guide, Doc. No. 002-08635 Rev. *A 13 Setup and Verification Figure 4-2. Charge Mode Setting (MPPT Mode Setting) DET0 Monitor Pin DET1 Monitor Pin VCC Pin GND_S Monitor Pin VDD_S Monitor Pin VDD_F Monitor Pin GND Pin JP2 SW1-5[ON] MPPT_ENA SW1-4[ON] ENA SW1-3[OFF] S2 SW1-2[OFF] S1 SW1-1[OFF] S0 ON ⇔ OFF JP10 JP9 JP5 JP8 TP4 TP3 TP1 TP2 JP3 JP7 JP6 MPPT_ENA Monitor Pin ENA Monitor Pin S2 Monitor Pin S1 Monitor Pin S0 Monitor Pin VDD Solar Cell, Peltie Element, etc. VOUT TP6 TP5 TP7 Li-ion battery ( 2.6V ) TP8 JP4 VOUT_F Monitor Pin VOUT_S Monitor Pin GND_S Monitor Pin GND Pin ：GND Pin ：JP Short ：JP Open Table 4-3. MPPT_ENA, ENA Settings of Charge Mode MPPT_ENA ENA Status SW1-5 JP10 SW1-4 JP9 On Open Off Short Charging Mode, Disable On Open On Open Charging Mode, Enable MB39C831-EVB-02 Thermal Energy Harvesting Evaluation Board Operation Guide, Doc. No. 002-08635 Rev. *A 14 Setup and Verification Table 4-4. MPPT Settings of Charge Mode S2 S1 S0 MPPT Values SW1-3 JP8 SW1-2 JP7 SW1-1 JP6 Off Short Off Short Off Short 50% (Initial Setting) Off Short Off Short On Open 55% Off Short On Open Off Short 60% Off Short On Open On Open 65% On Open Off Short Off Short 70% On Open Off Short On Open 75% On Open On Open Off Short 80% On Open On Open On Open 85% MB39C831-EVB-02 Thermal Energy Harvesting Evaluation Board Operation Guide, Doc. No. 002-08635 Rev. *A 15 5. Layout 5.1 Component Layout Figure 5-1. Component Layout (Layer 1) MB39C831-EVB-02 Thermal Energy Harvesting Evaluation Board Operation Guide, Doc. No. 002-08635 Rev. *A 16 Layout Figure 5-2. Component Layout (Layer 4) There is no component. 5.2 Wiring Layout Figure 5-3. Wiring Layout(Layer 1) MB39C831-EVB-02 Thermal Energy Harvesting Evaluation Board Operation Guide, Doc. No. 002-08635 Rev. *A 17 Layout Figure 5-4. Wiring Layout (Layer 2) Figure 5-5. Wiring Layout (Layer 3) MB39C831-EVB-02 Thermal Energy Harvesting Evaluation Board Operation Guide, Doc. No. 002-08635 Rev. *A 18 Layout Figure 5-6. Wiring Layout (Layer 4) MB39C831-EVB-02 Thermal Energy Harvesting Evaluation Board Operation Guide, Doc. No. 002-08635 Rev. *A 19 VDD_1 VCC_1 CN8 CN-1P GND 1 DIPSW Off (PullDown) SW1 DIPSW-8 JP Short × 5 CN7 CN-1P CN9 CN-1P MB39C831-EVB-02 Thermal Energy Harvesting Evaluation Board Operation Guide, Doc. No. 002-08635 Rev. *A TEST_CPP_ENA JP10 JMP2 JP9 JMP2 MPP_ENA JP8 JMP2 ENA S2 JP7 JMP2 JP6 S1 JMP2 S0 GND C4 0.47μ R7 1M TP22 TP_LAND TP21 TP_LAND R9 1M TP20 TP_LAND R8 1M TP19 TP_LAND TP18 TP_LAND R6 1M R5 1M C5 3300p JP11 JMP2 C6 4700p TEST0 TEST1 TEST2 GND TP15 TP_LAND TP17 TP_LAND GND GND 1 2 3 4 5 6 7 8 9 10 GND S2 S1 S0 ENA MPPT_ENA GND 101 100 DIE_PAD_1 DIE_PAD_0 R11 1M R10 100k C7 0.1μ S2 S1 S0 ENA MPPT_ENA SGND1 SGND3 TEST0 TEST1 TEST2 TEST_VR 40 39 38 37 36 35 34 33 32 31 TESTOUT2 TEST_VR2 TEST_VR3 TESTOUT CSH0 CSH1 CSH2 MPPT_OUT MPPT_IN VOUT LX PGND2 VOUT_2 SW2 DIPSW-8 DIPSW Off (PullDown) C8 47000p TEST2 TEST1 TEST0 11 12 13 14 15 16 17 18 19 20 MPPT_OUT MPPT_IN FB TEST_CPP_ENA TP7 TP_LAND R4 0 TP25 TP_LAND TP24 TP_LAND D1 NC TP6 TP_LAND TP8 TP_LAND TP23 TP_LAND C3 10μ TP5 TP_LAND C11 NC GND TP10 TP_LAND TP11 TP_LAND L1 4.7μ JP4 JMP2 JP Open C1 10μ TP1 TP_LAND JP Open C9 33p 1 1 R3 200K TP4 TP_LAND GND JP5 JMP2 JP3 JMP2 GND GND CN6 CN-1P CN5 VOUT CN-1P C10 10n JP Short C2 1.0μ TP9 TP_LAND VST D3 PLVA662A JP Short C12 NC TP3 TP_LAND TP2 TP_LAND VDD_sence VDD_force IC1 MB39C831_ES1_40PIN 30 29 28 27 26 25 24 23 22 21 VOUT_sence VOUT_force TEST_CPP_ENA VST PGND1 VDD DET0 DET1 VCC TEST_CSS SGND2 FB TP14 TP_LAND FB TP13 TP_LAND MPPT_OUT TP16 TP_LAND R2 100K JP1 JMP2 VDD_1 D2 NC GND 1 1 JP Short JP2 JMP2 VCC_1 MPPT_IN TP12 TP_LAND VCC R1 100K 1 1 CN4 CN-1P CN3 CN-1P VDD CN2 CN-1P CN1 CN-1P 6. Circuit Figure 6-1. Circuit 20 1 1 7. Component List Table 7-1. Component List No. Comp. Non- No. mounted Vender Class. Part Number Ratin Note g Land patterns are for 1608, 2012, 3225 size capacitor 1 C1,C3 Murata Capacitor GRM21BR71A106K 10V 2 C2 Murata Capacitor GRM188R71C105K 16V 3 C4 Murata Capacitor GRM188R71A474K 10V 4 C5 Murata Capacitor GRM155R71H332K 50V 5 C6 Murata Capacitor GRM155R71H472K 50V 6 C7 Murata Capacitor GRM155R71A104K 10V 7 C8 Murata Capacitor GRM155R71A473K 10V 8 C9 Murata Capacitor GRM1552C1H330J 50V 9 C10 Murata Capacitor GRM155R71E103K 25V 10 C11 N.M. Murata Capacitor GRM155B11C223K 16V Land pattern only 11 C12 N.M. Murata Capacitor GRM188R71H473K 50V Land pattern only 12 R1,R2 KOA Resistor RK73B1JTTD104J 0.1W 13 R10 KOA Resistor RK73B1JTTD104J 0.1W 14 R3 KOA Resistor RK73B1JTTD204J 0.1W 15 R4 KOA Resistor RK73Z1JT 1A KOA Resistor RK73B1JTTD105J 0.1W KOA Resistor RK73B1JTTD105J 0.1W TAIYO YUDEN Inductor CKP25204R7M-T 1.1A NXP Semi. Zener diode PLVA662A 6.2V Land pattern only 16 N.M. R5,R6,R7, R8,R9 N.M. Land pattern only 17 R11 18 L1 19 D1,D2 20 D3 NXP Semi. Zener diode PLVA662A 6.2V SOT23 SMD 21 CN1 to CN9 Mac8 Terminal WT-2-1 - ϕ1.6 N.M. MB39C831-EVB-02 Thermal Energy Harvesting Evaluation Board Operation Guide, Doc. No. 002-08635 Rev. *A Land pattern only 21 Component List No. Comp. Non- No. mounted 22 JP1 to JP10 23 JP11 24 SW1 25 SW2 26 27 Vender Class. Part Number Ratin Note g 2x1 pin header(2.54mm Linkman Jumper 2130S1*40GSE 1A Linkman Jumper 2130S1*40GSE 1A COPAL ELEC. DIP switch CFS-0800MC - COPAL ELEC. DIP switch CFS-0800MC - Land pattern only TP1 to TP25 Linkman Pin header 2130S1*40GSE 1A 1 pin header(2.54mm pitch) IC1 Spansion IC MB39C831 23V QFN40pin N.M. N.M. pitch) Land pattern only These components are compliant with RoHS, but please ask each vender for details if necessary. Murata: Murata Manufacturing Co., Ltd. KOA: KOA Corporation TAIYO YUDEN: TAIYO YUDEN CO., LTD. NXP Semi: NXP Semiconductors Mac8: Mac-Eight Co., Ltd. Linkman: Linkman Co., Ltd. COPAL ELEC.: NIDEC COPAL ELECTRONICS CORPORATION MB39C831-EVB-02 Thermal Energy Harvesting Evaluation Board Operation Guide, Doc. No. 002-08635 Rev. *A 22 8. Application Notes 8.1 Harvester The MB39C831 is designed for a harvester having a high power generation capacity, such as an outdoor solar cell. It is not possible to start up with a small indoor solar cell. 8.2 Power Requirement in Start-Up in Constant Voltage Mode The VDD (VDD=0.35V) voltage is applied from constant voltage source. Table 8-1. Power Requirement in Start-Up Preset Output Voltage Average Voltage Current Requirement Power Requirement Setting [V] in Start-Up at VDD [V] in Start-Up at VDD [mA] in Start-Upat VDD [mW] 3.0 0.35 17.7 6.20 3.3 0.35 18.8 6.58 3.6 0.35 22.7 7.95 4.1 0.35 33.1 11.59 4.5 0.35 46.3 16.21 5.0 0.35 73.6 25.76 VDD voltage is applied from constant voltage source. Figure 8-1. Current and Power Requirements in Start-Up Current Requirent in Start-up vs Preset Output Voltages 30 VDD = 0.35V (average) Power Requirent in Start-up at VDD [mW] Current Requirent in Start-up at VDD [mA] 100 90 80 70 60 50 40 30 20 10 0 3.0 3.3 3.6 4.1 4.5 Preset Output Voltages [V] 5.0 Power Requirent in Start-up vs Preset Output Voltages VDD = 0.35V (average) 25 20 15 10 5 0 3.0 3.3 3.6 4.1 4.5 Preset Output Voltages [V] 5.0 VDD voltage is applied from constant voltage source . MB39C831-EVB-02 Thermal Energy Harvesting Evaluation Board Operation Guide, Doc. No. 002-08635 Rev. *A 23 Application Notes 8.3 Waveform of VDD/VOUT Voltages in Start-up in Constant Voltage Mode The followings are the waveform of the VDD/VOUT voltages in start-up when a solar cell is connected. Figure 8-2. Waveform of VDD/VOUT Voltage in Start-up Waveforms with Solar Cell VDD = 0.5V, L = 4.7µH, IOUT = 0A Preset output voltage = 3.3V 0.5V VDD 200mV/DIV 3.3V VOUT 2V/DIV 3.3V DET1 2V/DIV 200ms/DIV The current requirements in start-up are shown in Table9-2 when the VDD current is applied from constant current source (because a solar cell operates close to a constant current source). For each preset output voltage, select a right harvester to satisfy the following current value in start-up. Table 8-2. Current Requirement in Start-Up at VDD Preset Output Voltage[V] Current Requirement in Start-Upat VDD[mA] 3.0 8.4 3.3 23.8 3.6 42.2 4.1 51.9 4.5 63.6 5.0 87.9 VDD current is applied from constant current source. MB39C831-EVB-02 Thermal Energy Harvesting Evaluation Board Operation Guide, Doc. No. 002-08635 Rev. *A 24 9. EVB Picture Figure 9-1. EVB Picture (Top) MB39C831-EVB-02 Thermal Energy Harvesting Evaluation Board Operation Guide, Doc. No. 002-08635 Rev. *A 25 EVB Picture Figure 9-2. EVB Picture (Back) MB39C831-EVB-02 Thermal Energy Harvesting Evaluation Board Operation Guide, Doc. No. 002-08635 Rev. *A 26 10. Ordering Information Table 10-1. Ordering Information Part Number MB39C831-EVB-02 EVB Revision Rev 1.0 Note --- MB39C831-EVB-02 Thermal Energy Harvesting Evaluation Board Operation Guide, Doc. No. 002-08635 Rev. *A 27 Revision History Document Revision History Document Title: MB39C831-EVB-02 Thermal Energy Harvesting Evaluation Board Operation Guide Document Number: 002-08635 Revision Issue Date Origin of Description of Change Change Revision 01:Initial release Revision 02:Section1 “Description” Deleted "Capable of accepting any high impedance DC source" Revision 03: Section 2 “Evaluation Board Specification” Table 2-1 Evaluation Board Specification ** 02/13/2015 EIFU Added the Max values of the output current Section 5 “Setup and verification and 5.2 Charge mode (MPPT mode)” Table 5-4 MPPT Settings of Charge Mode Corrected the contents of the MPPT Values Section 8 “Component List” Table 8-1 Component List Added the vender’s official names *A 02/05/2016 EIFU Migrated Spansion Guide from MB39C831-EVB-02_SS901-00018-3v0-E to Cypress format MB39C831-EVB-02 Thermal Energy Harvesting Evaluation Board Operation Guide, Doc. No. 002-08635 Rev. *A 28