MAX17233EVKIT#

Evaluates: MAX17233, MAX17232 MAX17233 Evaluation Kit General Description The MAX17233 evaluation kit (EV kit) is a fully assembled and tested application circuit board for the MAX17233 high-voltage, dual synchronous step-down controller. The EV kit is set up to provide 5V and 3.3V from an input voltage ranging from 6V to 36V. Each buck rail can deliver up to 5A load current. The EV kit’s switching frequency is set at 2.2MHz for both buck converters. Various jumpers are provided to help evaluate features of the MAX17233 IC. Features ●● Dual, Synchronous Step-Down Controllers Operate at 180° Out-of-Phase to Reduce Switching Noise ●● 6V to 36V Wide Input Supply Range ●● Buck Output Voltage: 5V and 3.3V Fixed/Adjustable Between 1V and 10V ●● Current-Mode Controllers with Forced-PWM and Skip Modes ●● Resistor-Configurable Frequency Between 1MHz and 2.2MHz ●● 89% Peak Efficiency @ 6V Input in Skip-Mode ●● FSYNC Input and Power-Good Output ●● Proven 4-Layer 2oz Copper PCB Layout ●● Demonstrates 2800mil x 1300mil Solution Size ●● Fully Assembled and Tested EV Kit Contents ●● MAX17233 EV Kit Board Quick Start Recommended Equipment ●● ●● ●● ●● MAX17233 EV kit 6V to 36V, 15A power supply Two voltmeters Two electronic loads capable of sinking 5A each Procedure The EV kit is fully assembled and tested. Follow the steps below to activate the board. Caution: Do not turn on the power supply until all connections are completed. 1) Verify that all jumpers are in their default configurations according to Table 1. 2) Connect the positive and negative terminals of the power supply to the VBAT and PGND banana jacks, respectively. 3) Connect the positive terminal of the first electronic load to the VOUT1 banana jack. Connect the ground terminal of the electronic load to the corresponding PGND banana jack. 4) Connect the positive terminal of the second electronic load to the VOUT2 banana jack. Connect the ground terminal of the electronic load to the corresponding PGND banana jack. 5) Set the power-supply voltage to 14V. 6) Turn on the power supply. 7) Enable the electronic loads. 8) Verify that VOUT1 is approximately 5V. 9) Verify that VOUT2 is approximately 3.3V. Ordering Information appears at end of data sheet. 19-8451; Rev 0; 2/16 Evaluates: MAX17233, MAX17232 MAX17233 Evaluation Kit Table 1. Default Jumper Settings JUMPER DEFAULT SHUNT POSITION JU1, JU2 1-2 Buck outputs enabled. JU6 1-2 Forced-PWM mode. JU7 1-2 Switches to EXTVCC. Internal regulator disabled. JU8, JU9 Installed Detailed Description of Hardware The MAX17233 EV kit, which evaluates the MAX17233 high-voltage, dual synchronous step-down controller, can supply up to two rails. The EV kit includes two current-mode buck outputs that are fixed to 5V and 3.3V, or configurable from 1V to 10V with external resistor-dividers. The current capability is 5A per rail. Both outputs are current limited and can be controlled independently through their respective enable inputs EN_. Switching Frequency/External Synchronization The EV kit switching frequency can be adjusted from 1MHz to 2.2MHz by changing the FOSC resistor R136. The EV kit can also be synchronized to an external clock by connecting the external clock signal to the FSYNC test point and AGND. Refer to the Switching Frequency/ External Synchronization section of the MAX17233 IC data sheet for more details. Enable Control The EV kit features jumper JU1 to independently control the enable input of VOUT1 and jumper JU2 to control the enable input of VOUT2. Connect the EN_ pin to VBAT (pins 1-2) to enable VOUT_. Connect the EN_ pin to PGND (pins 2-3) to disable VOUT_. See Table 2. Mode of Operation The EV kit features jumper JU6 to configure the mode switch-control input (Table 3). Drive FSYNC high (pins 1-2 of JU6) to enable forced-PWM mode. Drive FSYNC low (pins 2-3 of JU6) to enable skip mode under light loads. EXTVCC Switchover Comparator The internal linear regulator can be bypassed by connecting an external supply (3.1V to 5.2V) or the output of one of the buck converters to EXTVCC. BIAS internally switches to EXTVCC and the internal linear regulator turns off. If VEXTVCC drops below VTH,EXTVCC = 3.1V(min), the internal regulator enables and switches back to BIAS. See Table 4. www.maximintegrated.com FUNCTION PGOOD_ pulls up to BIAS when OUT_ is in regulation. Table 2. Enable Control (JU1, JU2) SHUNT POSITION EN_ PIN VOUT_ 1-2* Connected to VBAT Enabled 2-3 Connected to PGND Disabled *Default configuration. Table 3. Mode of Operation (JU6) SHUNT POSITION FSYNC PIN MODE 1-2* Connected to BIAS Forced-PWM mode 2-3 Connected to AGND Skip mode *Default configuration. Table 4. EXTVCC (JU7) SHUNT POSITION EXTVCC PIN 1-2 Connected to VOUT1 Switches to EXTVCC. Internal regulator disabled. 1-3* Connected to PGND Internal regulator enabled. 1-4 Connected to VOUT2 Switches to EXTVCC. Internal regulator disabled. BIAS *Default configuration. Buck Output Monitoring (PGOOD_) The EV kit provides two power-good output test points (PGOOD1 and PGOOD2) to monitor the status of the two buck outputs (OUT1 and OUT2). Each PGOOD_ goes high (high impedance) when the corresponding regulator output voltage is in regulation. Each PGOOD_ goes low when the corresponding regula­tor output voltage drops below 15% (typ) or rises above 10% (typ) of its nominal regulated voltage. PGOOD_ asserts low during soft-start Maxim Integrated │  2 MAX17233 Evaluation Kit and in shutdown. PGOOD_ becomes high impedance when OUT_ is in regulation. To obtain a logic signal, pull up PGOOD_ to BIAS by installing shunts on JU8 and JU9. Setting the Output Voltage in Buck Converters To externally adjust the output voltage OUT1 between 1V and 10V, remove R122. Connect a resistive divider from the output OUT1 to FB1 to AGND. Place appropriate resistors in positions R119 and R120 according to the following equation:  V   = R119 R120  OUT1  − 1  VFB1   where VFB1 = 1V (typ). To externally adjust the output voltage OUT2 between 1V and 10V, remove R134. Connect a resistive divider from the output OUT2 to FB2 to AGND. Place appropriate resistors in positions R131 and R132 according to the following equation: Evaluates: MAX17233, MAX17232 Evaluating the MAX17232 on the MAX17233 EV Kit The MAX17233 EV kit can be modified to operate the MAX17232. The MAX17232 operates at a switching frequency of 400kHz, which requires a change in the following components: 1) Replace U1 with the MAX17232 IC. 2) Replace R136 (RFOSC) with 80.6kΩ to achieve 400kHz switching frequency. 3) Replace the buck inductors (L7, L8) with a 6.8µH 7A inductor. Contact Technical Support at www.maximintegrated. com/support for any further questions.  V   = R131 R132  OUT2  − 1  VFB2   where VFB2 = 1V (typ). www.maximintegrated.com Maxim Integrated │  3 MAX17233 Evaluation Kit Evaluates: MAX17233, MAX17232 Component Suppliers SUPPLIER WEBSITE NXP www.nxp.com Fairchild Semiconductor www.fairchildsemi.com IRC, Inc. www.irctt.com Murata Electronics North America, Inc. www.murata.com Panasonic Corp. www.panasonic.com TDK Corp. www.component.tdk.com Vishay www.vishay.com Note: Indicate that you are using the MAX17233 when contacting these component suppliers. Component Information, PCB Layout, and Schematic See the following links for component information, PCB layout diagrams, and schematic. ●● MAX17233 EV BOM Ordering Information PART TYPE MAX17233EVKIT# EV Kit #Denotes RoHS compliant. ●● MAX17233 EV PCB Layout ●● MAX17233 EV Schematic ●● MAX17233 EV Minimal Component Schematic www.maximintegrated.com Maxim Integrated │  4 MAX17233 Evaluation Kit Evaluates: MAX17233, MAX17232 Revision History REVISION NUMBER REVISION DATE 0 2/16 DESCRIPTION Initial release PAGES CHANGED — For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com. Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. © 2016 Maxim Integrated Products, Inc. │  5 MAX17233EVKIT#: Rev A Item Component Description 0001 0002 0003 0004 0005 0006 0007 0008 0009 0010 0011 0012 0013 0014 0015 0016 0017 0018 0019 0020 0021 0022 0023 0024 0025 0026 0027 0028 0029 63MIL DRILL SIZE test point (BLK) 63MIL DRILL SIZE test points (RED) 0.1uF±10%, 50V X7R ceramic capacitors (0603) 47uF ±20%, 16V X7R ceramic capacitors (2220) 4700pF ±10% 50V X7R ceramic capacitors (0402) 22pF ±5% 50V C0G ceramic capacitor (0402) 6.8uF ±10%, 16V X7R ceramic capacitor (1206) 2.2uF ±10%, 10V X7R ceramic capacitor (0603) 33pF ±5% 50V C0G ceramic capacitor (0402) 47uF, 50V ±20% aluminum electrolytic capacitor (8.0x6.2mm) 4.7uF±10%, 50V X7R ceramic capacitors (1210) 200mA, 30V Schottky diodes (SOT23) 5A, 40V Schottky Diodes (SOD-128) 3-pin headers (CUT TO FIT) 4-pin header (CUT TO FIT) 2-pin headers (CUT TO FIT) 2.2uH 12A power inductors 40V, 7.6A N-channel MOSFETs (8-SOIC) JACKs, BANNANA, UNINSULATED, PANEL MOUNT 1kΩ 5% resistors (0603) 0Ω  5% resistors (0603) 0.012Ω, ±1%, 1W sense resistors (2010) 22.1kΩ 1% resistor (0603) 1Ω ±5%, resistor (0603) 14kΩ 1% resistor (0603) 13.7kΩ 1% resistor (0603) 100kΩ 1% resistor (0603) 51.1kΩ % resistors (0603) Dual Buck (28-pinTQFN 5x5x0.8mm) Not Installed Capacitors (0603) Not Installed Capacitors (2220) Not Installed Resistors (0603) 0030 Shunts 0031 PC board: MAX17233 EV KIT Qty 1 3 5 4 2 1 1 1 1 1 6 2 2 3 1 2 2 4 6 2 8 2 1 1 1 1 1 2 1 0 0 0 6 1 Reference Designators Manufacturer Part Number AGND FSYNC, PGOOD1 TEST, PGOOD2 TEST C1, C2, C3, C75, C83 C76, C77, C84, C85 C78, C86 C79 C81 C82 C87 C88 C90-C93, C97, C116 D20, D21 D22, D23 JU1, JU2, JU6 JU7 JU8, JU9 L7, L8 Q13-Q16 PGND (3x), VBAT, VOUT1, VOUT2 R1, R2 R113-R115, R122, R125-R127, R134 R116, R128 R123 R124 R135 R136 R137 R156, R157 U1 C4, C5, C102, C103 C117, C118 R119, R120, R131, R132 See Jumper Table 2 oz Cu Keystone Electronics Keystone Electronics Murata TDK Murata Murata TDK Murata Murata Panasonic Murata Fairchild NXP SULLINS SULLINS SULLINS Vishay Fairchild JOHNSON Any Any IRC Any Any Any Any Any Any Maxim 5011 5010 GRM188R71H104K CGA9N3X7R1C476M GRM155R71H472K GRM1555C1H220J C3216X7R1C685K GRM188R71A225K GRM1555C1H330J EEEFK1H470P GCM32ER71H475KA55L BAT54 PMEG4050EP PEC36SAAN PEC36SAAN PEC36SAAN IHLP4040DZER2R2M01 FDMC8015L 108-0740-001 Any Any LRF2010LF-01-R012-F Any Any Any Any Any Any MAX17233ETIR+ Kycon Network PCB SX1100-B MAX17233 EV KIT X3 PGND PGND JU7 JU6 JU6 1 2 3 JU7 FSYNC FSYNC 3 1.0" 1 of 6 Q16 D23 D23x2 C84R128 C85 2 1 4 EXTVCC J6 J5 X7 PGND C3x1 C3x2 Q15x10 C92x1 C93x1 C92x2 C93x2 Q15x5 Q15x6 Q15x7 Q15x8 Q15x9 L8 L8x1 L8x2 C5 C88x1 R1 R1 R2 R2 PGOOD1_TEST PGOOD2_TEST R1x1 R1x2 R156 R156x2 R156x1 R156 JU8 2 JU9 R157 PGOOD1_TEST PGOOD2_TEST PGO D1_TESTx1 JU8x2 JU8x1 1 R2x2 R2x1 R157 R157x2 R157x1 PGO D2_TESTx1 JU9x2 JU9x1 X2x1 PGND X6x21 J4x1 C88x2 JU8 R128x1 R128x2 C85x1 C84x1 Q15x4 C5x1 C5x2 C3 C85x2 C84x2 Q15x3 Q15x2 Q16x6 Q16x5 Q16x7 Q15x1 R127 R115 C4 X6 R128 Q16x10 Q16x9 D23x1 Q16x4 Q16x3 Q16x2 Q16x8 C83x2 C83x1 D21x2 D21x3 D21x1 C4x1 C4x2 C93 C92 J5x1 R125x2 1 Q16x1 R126x2 R126x1 R127x1 R127x2 Q15 VOUT2x21 R125 D23 R131x2 R131x1 R125x1 U1 J6x1 R132R131 R132 R131 R132x2 R132x1 C75x1 R115x1 R115x2 R113x1 1 R134 C86x2 C86x1 C87x1 U1x22 U1x23 U1x24 U1x25 U1x26 U1x27 U1x28 VBATx21 J3x1 VBAT X7x21 C87C86 C87x2 U1x32 U1x 5 U1x 6 U1x 7 U1x 8 U1x 9 U1x20 U1x21 U1x33 U1x29 U1x31 D20x2 D20x3 D20x1 + D21 C83 R126 R134x1 R134x2 R135x2 R135x1 U1x14 U1x13 U1x12 U1x30 C75x2 R113x2 Q13x6 Q13x5 C88 R136 R137x1 C2 R137x2 C2 R136x1 R136x2 U1x11 U1x10 U1x7 U1x6 U1x5 U1x4 U1x3 U1x2 U1x1 U1 U1x9 Q13x10 D20 C75 R113 C2x1 R114x1 Q13x4 Q13x3 Q13x7 J3 C88J4 VBAT C97x1 C116x1 U1x8 R120x1 R120x2 Q14x6 Q14x5 Q14x4 Q13x2 Q13x1 Q14x9 Q13x9 Q14x3 R114x2 Q14x7 Q14x2 Q14x1 C4 D21C5 Q15 Q13 D20 C75 R127C83 R126 R113R115 Q14 R114 R125 Q16 1 JU6x3 C79x2 C79x1 R114 JU6x2 C82x1 C82x2 C82 C97x2 C116x2 C2x2 R124x1 R123x1 Q14x10 Q13x8 C90x2 C91x2 C90x1 C91x1 Q13 FSYNCx1 R136 R135 R134 R132 R131 R137 C87 C86 R135 C82 C116 C116 R137 C84 AGND C97 C97 C85 C81x2 R119R120 R119x1 R119x2 Q14 R124x2 R122 C78x2 1 C78x1 1 R123x2 R122x1 R122x2 Q14x8 C1x2 C1x1 DATE: JAN 2016 MAX17233 EVKIT REV-A X14 1-888-629-4642 01/16 AMD X5 www.maximintegrated.com X5x1 VOUT1 C1 X14x1 VOUT1 C91 C90 JU6x1 C76 R119 R120 C78 C79 C78 C79 R123 R123 C81 C81 C77 R124 C76 R124 AGND C81x1 D22x1 JU2x3 JU2x2 X1 JU7x2 JU7x1 JU7x3 JU7x4 R116C77 D22 C91 C90 L7 C1 D22x2 JU2x1 2 3 C76x2 C77x2 L7x2 L7 D22 C76x1 C77x1 JU2 EN2 AGNDx1 1300mil JU1x1 JU1 JU2 JU1x3 JU1x2 LAYER R122 L7x1 DIS R116x2 R116x1 EN 1 J2x1 R116 JU1 EN1 PGNDx21 J1x1 J1 J2 VOUT1x21 X4x1 X4 X14x2 X3x1 MAX17233 EVKIT REV A TOP SILKSCREEN ALL UNITS ARE IN 0.001" JU9 X2 C93 C92 C3 L8 2800mil VOUT2 VOUT2 X3 JU6 JU6x3 JU6x2 FSYNC JU7 1.0" 2 of 6 U1x32 R131x2 R131x1 R132x2 R132x1 U1x 5 U1x 6 U1x 7 U1x 8 U1x 9 U1x20 U1x21 U1x33 U1x31 U1x29 U1x30 D23x2 R132R131 U1x28 U1x27 U1x26 Q16x4 Q16x3 Q16x2 Q16x1 R125x2 R125x1 U1x22 U1x23 U1x24 U1x25 Q15x3 Q15x4 Q15x2 Q16x6 Q16x5 Q16x7 Q15x1 D21x2 D21x1 C3x1 C3x2 Q15x10 Q15x5 Q15x6 Q15x7 Q15x8 Q15x9 C5x1 C5x2 D21x3 C4x1 C4x2 D20x2 D20x3 D20x1 C92x1 C93x1 C92x2 C93x2 J6 J5 X7 L8x1 C88x2 X6x21 X6 R1x1 R1x2 R156x2 R156x1 J4x1 C88x1 R156 JU8 C84R128 C85 R128x1 R128x2 L8 L8x2 VBATx21 J3x1 R1 C85x1 C84x1 D23x1 D23 C85x2 C84x2 C83x2 R126x2 Q16x8 C83x1 R126x1 R127x1 R127x2 Q16x9 Q16x10 C75x1 R113x1 R115x1 R115x2 C75x2 R113x2 Q13x6 Q13x5 Q13x4 Q13x10 Q13x3 Q14x6 Q14x5 C93 C92 C3 J5x1 U1x7 U1x6 U1x5 U1x4 U1x3 U1x2 U1x1 Q14x10 Q14x9 Q13x9 Q13x2 Q13x8 Q13x7 Q13x1 Q14x8 Q14x7 J3 C88J4 VOUT2x21 C86x2 C86x1 C87x1 C87x2 R134x1 R134x2 R135x2 R135x1 U1x14 U1x13 U1x12 U1x11 U1x10 U1x9 U1x8 R120x1 C87C86 J6x1 R137x1 R136x1 R136x2 C2x1 C79x2 R114x1 R114x2 Q14x4 Q14x3 Q14x2 U1 R137x2 C97x1 C116x1 C2x2 R120x2 R119x1 C4 D21C5 Q15 Q13 D20 C75 R127C83 R126 R113R115 Q14 R114 R125 Q16 Q14x1 VBAT X7x21 C82x1 C82x2 C79x1 R119x2 R119R120 C97x2 C116x2 R124x1 R123x1 C78x2 C78 C79 C78x1 C90x2 C91x2 C90x1 C91x1 JU2x1 JU1x1 PGOOD1_TEST PGOOD2_TEST R2 X14 R2x2 R2x1 JU9 R157 R157x2 R157x1 PGO D2_TESTx1 JU9x2 JU9x1 PGO D1_TESTx1 JU8x2 JU8x1 X2x1 DATE: JAN 2016 X5 X5x1 PGND C81x2 R135 R134 R122 R123 C2R136R137 C81 C116 C82 AGND R124 C97 R123x2 R122x1 R122x2 C1x2 C1x1 C1 R124x2 C81x1 D22x1 C91 C90 FSYNCx1 C76 AGNDx1 D22x2 JU2x3 JU2x2 JU1x3 JU1x2 JU1 JU2 JU7x2 JU7x1 JU7x3 JU7x4 R116C77 C76x2 C77x2 L7x2 L7x1 L7 D22 C76x1 C77x1 R116x2 R116x1 X4 JU6x1 J2x1 VOUT1 PGNDx21 J1x1 J1 J2 VOUT1x21 X4x1 LAYER X14x1 X14x2 X3x1 MAX17233 EVKIT REV A COMPONENT SIDE ALL UNITS ARE IN 0.001" X2 VOUT2 X3 JU6 JU6x3 JU6x2 JU6x1 FSYNC JU7 1.0" 3 of 6 J6x1 J6 J5 X7 J5x1 U1x32 PGOOD1_TEST PGOOD2_TEST JU8 JU9 PGO D2_TESTx1 JU9x2 JU9x1 PGO D1_TESTx1 JU8x2 JU8x1 X6x21 J4x1 J3 J4 VOUT2x21 X7x21 U1x31 U1x33 U1 U1x30 U1x29 VBATx21 VBAT J3x1 JU2x1 JU2x3 JU2x2 X2x1 DATE: JAN 2016 X14 X5 X5x1 PGND JU7x2 JU7x1 JU7x3 JU7x4 AGNDx1 JU1x1 JU1 JU2 JU1x3 JU1x2 X4 FSYNCx1 J2x1 VOUT1 PGNDx21 J1x1 J1 J2 VOUT1x21 X4x1 LAYER X14x1 X14x2 X3x1 MAX17233 EVKIT REV A LAYER 2 GND ALL UNITS ARE IN 0.001" X6 X2 AGND VOUT2 X3 JU6 JU6x3 JU6x2 JU6x1 FSYNC JU7 1.0" 4 of 6 J6x1 J6 J5 X7 J5x1 U1x32 PGOOD1_TEST PGOOD2_TEST JU8 JU9 PGO D2_TESTx1 JU9x2 JU9x1 PGO D1_TESTx1 JU8x2 JU8x1 X6x21 J4x1 J3 J4 VOUT2x21 X7x21 U1x31 U1x33 U1 U1x30 U1x29 VBATx21 VBAT J3x1 JU2x1 JU2x3 JU2x2 X2x1 DATE: JAN 2016 X14 X5 X5x1 PGND JU7x2 JU7x1 JU7x3 JU7x4 AGNDx1 JU1x1 JU1 JU2 JU1x3 JU1x2 X4 FSYNCx1 J2x1 VOUT1 PGNDx21 J1x1 J1 J2 VOUT1x21 X4x1 LAYER X14x1 X14x2 X3x1 MAX17233 EVKIT REV A LAYER 3 PWR ALL UNITS ARE IN 0.001" X6 X2 AGND VOUT2 X3 JU6 JU6x3 JU6x2 FSYNC JU7 1.0" 5 of 6 J6 J5 X7 J5x1 VOUT2x21 AGND PGOOD1_TEST PGOOD2_TEST JU8 JU9 PGO D2_TESTx1 JU9x2 JU9x1 PGO D1_TESTx1 JU8x2 JU8x1 X6x21 J4x1 J3 J4 C118 C118x1 C118x2 U1x32 U1x33 C102 C102x2 C102x1 U1x31 U1x30 U1 J6x1 U1x29 J3x1 VBATx21 VBAT X7x21 C103x1 C103x2 JU2x1 JU2x3 JU2x2 X2x1 DATE: JAN 2016 X14 X5 X5x1 PGND JU6x1 AGNDx1 C103 JU7x2 JU7x1 JU7x3 JU7x4 C117 C117x2 C117x1 JU1x1 JU1 JU2 JU1x3 JU1x2 X4 FSYNCx1 J2x1 VOUT1 PGNDx21 J1x1 J1 J2 VOUT1x21 X4x1 LAYER X14x1 X14x2 X3x1 MAX17233 EVKIT REV A SOLDER SIDE ALL UNITS ARE IN 0.001" X6 X2 VOUT2 X3 JU6 JU6x3 JU6x2 FSYNC JU7 1.0" 6 of 6 J6x1 J6 J5 X7 J5x1 AGND PGOOD1_TEST PGOOD2_TEST JU8 JU9 PGO D2_TESTx1 JU9x2 JU9x1 PGO D1_TESTx1 JU8x2 JU8x1 X6x21 J4x1 J3 J4 C118 C118x1 C118x2 711C VOUT2x21 X7x21 U1x32 C102 C102x2 C102x1 U1x31 U1x33 U1 U1x30 U1x29 VBATx21 VBAT J3x1 JU2x1 JU2x3 JU2x2 X2x1 DATE: JAN 2016 X14 X5 X5x1 PGND C103x1 C103x2 301C JU6x1 AGNDx1 C103 JU7x2 JU7x1 JU7x3 JU7x4 C117 C117x2 C117x1 JU1x1 JU1 JU2 JU1x3 JU1x2 X4 FSYNCx1 J2x1 VOUT1 PGNDx21 J1x1 J1 J2 VOUT1x21 X4x1 LAYER X14x1 X14x2 X3x1 MAX17233 EVKIT REV A BOTTOM SILKSCREEN ALL UNITS ARE IN 0.001" X6 X2 201C 811C VOUT2 6 5 4 3 2 1 REVISION RECORD LTR D VBAT 1 C75 0.1uF 50V 3 D VBAT 7 8 1 C76 47uF 16V PGND BIAS R113 R126 0 0 C5 OPEN VBAT 6 7 C93 4.7uF 50V 8 5 4 C92 4.7uF 50V C3 0.1uF 50V J5 VOUT2 1 Q15 1 LX2 3 VOUT2 6 8 L8 2.2uH 0.012 1% VOUT2 3.3V, 5A 22 8 DL2 R125 21 4 5 Q16 1 0 3 C85 47uF 16V D23 LX1 7 5 1 6 LX2 23 DH2 24 BST2 25 26 EN2 LX1 EN1 27 4 1 R128 C84 47uF 16V C118 OPEN 2 7 PGND 2 D22 C77 47uF 16V 0 1 2.2uH R114 4 Q14 2 C C117 OPEN D21 3 L7 1 0.012 1% C83 0.1uF 50V 2 2 R116 3 5 3 VOUT1 3 JU2 6 Q13 VOUT1 5V, 5A 2 BST1 C90 4.7uF 50V 2 0 28 1 C91 4.7uF 50V 1 R127 DH1 C1 0.1uF 50V 1 R115 C4 OPEN J1 VOUT1 DATE: LX2 JU1 BIAS APPROVED: VBAT LX1 D20 ECO NO: 3 1 2 DL1 PGND2 C 20 J6 PGND 0 2 1 3 PGND1 CS2 J2 PGND 19 U1 1 4 C103 OPEN 5 R119 OPEN 6 MAX17233ETIR+ CS1 OUT2 OUT1 FB2 FB1 COMP2 18 R131 OPEN 17 14k 1% C86 4700pF R134 BIAS 0 EP 15 14 FSYNC PGOOD2 13 PGOOD1 12 11 IN EXTVCC 10 C79 22pF AGND 22.1k 1% FOSC BIAS C78 4700pF COMP1 8 R122 0 7 9 R123 R132 OPEN R135 16 C87 33pF R120 OPEN C102 OPEN R136 13.7k 1% BIAS B C81 6.8uF B R137 AGND 100k 1% VOUT1 BIAS JU7 3 2 FSYNC R124 1 1 1 4 C82 2.2uF JU6 2 3 GND VOUT2 PGND J3 VBAT 1 PGOOD2_TEST VBAT VBAT PGND J4 PGND R2 C2 0.1uF 50V + C88 47uF 50V C116 4.7uF 50V C97 4.7uF 50V 1k R157 PGOOD1_TEST 2 JU9 1 51.1k R1 R156 1k 51.1k 2 JU8 1 BIAS 1 A A TITLE: MAX17233 EVKIT PCB PART NUMBER: REV: A DRAWN: DATED: JAN 2016 SHEET: 1 OF 1 6 5 4 3 2 1 REVISION RECORD LTR ECO NO: APPROVED: DATE: D D LX2 LX1 C75 0.1uF 50V VBAT C83 0.1uF 50V VBAT D21 D20 1 BIAS 3 3 VBAT 1 BIAS 6 7 8 5 4 VBAT 7 8 J2 PGND 7 C76 47uF 16V 1 0.012 1% 22 7 8 5 1 6 LX2 23 DH2 24 BST2 25 EN2 26 EN1 DL2 4 21 Q16 1 5 3 C85 47uF 16V D23 LX1 6 8 2.2uH J5 VOUT2 1 C84 47uF 16V 2 D22 C77 47uF 16V 1 2.2uH 4 Q14 2 C LX1 L8 R128 2 0.012 1% VOUT2 L7 1 R116 1 27 4 1 2 VOUT1 3 5 3 VOUT1 C3 0.1uF 50V 2 Q13 J1 C92 4.7uF 50V Q15 1 LX2 6 BST1 C90 4.7uF 50V 28 C91 4.7uF 50V DH1 C1 0.1uF 50V C93 4.7uF 50V 3 2 DL1 PGND2 J6 PGND 1 C 20 1 2 3 PGND1 CS2 19 U1 4 MAX17233ETIR+ CS1 5 OUT2 OUT1 6 FB2 FB1 COMP2 18 17 BIAS R135 16 C87 33pF FSYNC 15 14 PGOOD2 13 PGOOD1 12 IN 10 11 BIAS EXTVCC FOSC AGND COMP1 C79 22pF C86 4700pF EP 7 22.1k 1% 8 C78 4700pF 9 R123 14k 1% R136 13.7k 1% BIAS B B C81 6.8uF BIAS R124 VOUT1 1 C82 2.2uF GND PGND VBAT J3 VBAT 1 J4 PGND 1 A C2 0.1uF 50V + C88 47uF 50V C116 4.7uF 50V C97 4.7uF 50V A TITLE: MAX17233_MINIMAL_COMPONENT_CIRCUIT PCB PART NUMBER: REV: A DRAWN: DATED: A. DIMAPILIS NOV 2015 SHEET: OF 1 1