EV9928-F-00B 60V Current Mode, Synchronous Step-Down Controller Evaluation Board DESCRIPTION FEATURES The EV9928-F-00B Evaluation Board is designed to demonstrate the capabilities of MP9928. The MP9928 is a high-voltage, synchronous step-down controller that directly steps down voltages from up to 60V. The MP9928 uses PWM current control architecture with accurate cycle-by-cycle current limiting and is capable of driving dual N-channel MOSFETs. The operating frequency of the MP9928 can be programmed by an external resistor or synchronized to an external clock for noise sensitive applications. Full protection features include precision output over-voltage protection (OVP), output over-current protection (OCP), and thermal shutdown. The MP9928 is available in TSSOP20-EP and QFN-20 (3mmx4mm) packages. This board is available in TSSOP20-EP package. ELECTRICAL SPECIFICATION Parameter Input Voltage Output Voltage Output Current Symbol VIN VOUT IOUT Value Units (1) 6-60 5 7 V V A 6V to 60V Input Voltage for This 5V Output Board Dual N-Channel MOSFET Driver Low Dropout Operation: Maximum Duty Cycle at 99.5% 180ºOut-of-Phase SYNCO Output Programmable Soft Start Output Power Good Indicator Selectable Threshold for Cycle-by-Cycle Current Limit Programmable Frequency Range: 100kHz1000kHz External Power Bias Option for Vcc Supply Output Over-Voltage Protection (OVP) Over-Current Protection (OCP) TSSOP20-EP Package on This Board APPLICATIONS PD Power Supply in PoE System USB Dedicated Charging Port (DCP) Industrial Control Systems Power Supply for Linear Chargers All MPS parts are lead-free, halogen free, and adhere to the RoHS directive. For MPS green status, please visit MPS website under Quality Assurance. “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. Note: (1) The IC can work to 4V input, but the output voltage will drop, it is limited by the maximum duty cycle. EV9928-F-00B EVALUATION BOARD (L x W x H) 8.36cm x 8.36cm x 0.8cm (Four Layers) Board Number MPS IC Number EV9928-F-00B MP9928GF EV9928-F-00B Rev. 1.01 www.MonolithicPower.com 11/21/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. 1 EV9928-F-00B—SYNCHRONOUS STEP DOWN CONTROLLER EV BOARD EVALUATION BOARD SCHEMATIC VIN 6V-60V NS NS NS FB1 CIN1 CIN2 NS L1 NS CIN3 R1 37.4K NS C12 C3 4.7uF 100K R2 4.7uF 0.47uF C1B C1C VIN C4 0 R3 PG 1uF 47uF 4.7uF VCC1 VIN VOUT VCC2 NS CIN4 CIN5 C1A R15 100K 1M R16 NS R17 JP1 C9 NS IN FREQ VCC1 VCC2 PG SYNCO EN/SYNC CCM/AAM U1 MP9928 SGND VEMI GND SYNCO EN/SYNC VCC1 R4 37.4K PGND COMP TG BST SW BG SENSE+ FB SENSE- ILIM SS C6 680pF R5 51K NS C7 R11 0 R13 2.2 0 R12 R6 NS C5 10nF D1 C8 M1 M2 VCC1 0.1uF D2 NS NS M3 NS M4 L2 4.7uH R14 1 0 C11 220pF D3 R7 0.007 0 R20 R19 NS C13 0 VOUT 10 NS R10 R18 R8 63.4K C10 NS R9 12K 220uF C2B NS C2C 22uF C2A NS C2D 5V7A VOUT 2 EV9928-F-00B Rev. 1.01 www.MonolithicPower.com 11/21/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. EV9928-F-00B—SYNCHRONOUS STEP DOWN CONTROLLER EV BOARD EV9928-F-00B BILL OF MATERIALS Qty Ref Value 0 CIN1, CIN2, CIN3, CIN4 NS 1 CIN5 47μF 2 1 1 C1A,C1B C1C C2B 4.7μF 0.47μF 220μF 1 0 1 1 1 1 22μF NS 4.7μF 1μF 10nF 680pF 1 1 C2A C2C,C2D C3 C4 C5 C6 C7,C9, C10,C12, C13 C8 C11 Package Manufacturer SMD Jiang Hai 1210 0805 D2 TDK muRata SANYO C3225X7S2A475K GRM21BR72A474KA73L 6TPE220MI Ceramic Cap;16V;X7R 1210 muRata GRM32ER71C226KE79 Ceramic Cap;16V;X7R Ceramic Cap;16V;X7R Ceramic Cap;50V;X7R Ceramic Cap;50V;X7R 0805 0603 0603 0603 muRata muRata muRata muRata GRM21BR71C475KA73L GRM188R71C105KA12D GRM188R71H103KA01 GRM188R71H681KA01D Ceramic Cap;16V;X7R CeramicCap;100V;X7R 0603 0603 muRata muRata GRM188R71C104KA01D GRM21BR72A221KA01L 1 0 1 0 0 D1 D2 D3 FB1 L1 SOD-323 Diodes 1N4148WS-7-F Diodes DFLS1150 1 L2 4.7μH SMD Wurth 7443551470 2 M1, M2 SQJ850EP PowerPAK SO-8L Vishay SQJ850EP 0 M3, M4 NS 2 R1, R4 37.4k Film Resistor;1% 0603 ROYAL RC0603FR-0737K4L 2 R2, R15 100k Film Resistor;1% 0603 ROYAL RC0603FR-07100KL 5 R3, R11,R12, R19,R20 0 Film Resistor;5% 0603 ROYAL RC0603JR-070RL 1 R5 51k Film Resistor;1% 0603 ROYAL RC0603FR-0751KL 0 R6,R10 R17 NS 0 Description Electrolytic Cap;100V; 10*10.5;2000H;105℃ Ceramic Cap;100V;X7S Ceramic Cap;100V;X7R POSCAP;6.3V; Part Number VZ2-100V47 NS 0.1μF 220pF 1N4148WS Diode;75V;0.15A; NS DFLS1150 Diode;150V;1A; NS NS Inductor;4.7μH; 7.7mOhm;15A N-Channel MOSFET; 60V;24A;0.023Ohm EV9928-F-00B Rev. 1.01 www.MonolithicPower.com 11/21/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. 3 EV9928-F-00B—SYNCHRONOUS STEP DOWN CONTROLLER EV BOARD EV9928-F-00B BILL OF MATERIALS (continued) Qty Ref Value Description Package Manufacturer 1 R7 0.007 1 1 1 1 1 1 R8 R9 R13 R14 R16 R18 63.4k 12k 2.2 10 1M 10 1 U1 MP9928GF Film Resistor;1%;1W 2512 CYNTEC RL3264-6-R007-FN Film Resistor;1% Film Resistor;1% Film Resistor;1% Film Resistor;1% Film Resistor;1% Film Resistor;1% 0603 0603 0603 0805 0603 0603 ROYAL ROYAL ROYAL ROYAL ROYAL ROYAL RC0603FR-0763K4L RC0603FR-0712KL RC0603FR-072R2L RC0805JR-0710RL RC0603FR-071ML RC0603FR-0710RL Synchronous Step-Down TSSOP20Controller EP MPS Part Number MP9928GF EV9928-F-00B Rev. 1.01 www.MonolithicPower.com 11/21/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. 4 EV9928-F-00B—SYNCHRONOUS STEP DOWN CONTROLLER EV BOARD EVB TEST RESULTS VIN = 24V, VOUT = 5V, L = 4.7µH, TA = 25ºC, unless otherwise noted. EV9928-F-00B Rev. 1.01 www.MonolithicPower.com 11/21/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. 5 EV9928-F-00B—SYNCHRONOUS STEP DOWN CONTROLLER EV BOARD EVB TEST RESULTS (continued) VIN = 24V, VOUT = 5V, L = 4.7µH, TA = 25ºC, unless otherwise noted. EV9928-F-00B Rev. 1.01 www.MonolithicPower.com 11/21/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. 6 EV9928-F-00B—SYNCHRONOUS STEP DOWN CONTROLLER EV BOARD EVB TEST RESULTS (continued) VIN = 24V, VOUT = 5V, L = 4.7µH, TA = 25ºC, unless otherwise noted. EV9928-F-00B Rev. 1.01 www.MonolithicPower.com 11/21/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. 7 EV9928-F-00B—SYNCHRONOUS STEP DOWN CONTROLLER EV BOARD PRINTED CIRCUIT BOARD LAYOUT Figure 1—Top Silk Layer Figure 2—Top Layer Figure 3—Middle Layer 1 Figure 4— Middle Layer 2 Figure 5—Bottom Layer Figure 6—Bottom Silk Layer EV9928-F-00B Rev. 1.01 www.MonolithicPower.com 11/21/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. 8 EV9928-F-00B—SYNCHRONOUS STEP DOWN CONTROLLER EV BOARD QUICK START GUIDE The output voltage of this board is set to 5V. The board layout accommodates most commonly used components. 1. Preset Power Supply to 6V ≤ VIN ≤ 60V. 2. Turn Power Supply off. 3. Connect Power Supply terminals to: a. Positive (+): VIN b. Negative (–): GND 4. Connect Load to: a. Positive (+): VOUT b. Negative (–): GND 5. The MP9928 is enabled on the evaluation board once VIN is applied. 6. Turn Power Supply on after making connections, the MP9928 will startup automatically. 7. To use the Enable function, apply a digital input to the EN pin. Drive EN higher than 1.3V to turn on EV9928-F-00B or less than 1V to turn it off. NOTICE: The information in this document is subject to change without notice. Please contact MPS for current specifications. Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not assume any legal responsibility for any said applications. EV9928-F-00B Rev. 1.01 www.MonolithicPower.com 11/21/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. 9