EV9928-F-00B MPS | Alldatasheet
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Technical content
60V Current Mode, Synchronous Step-Down Controller Evaluation Board EV9928-F-00B Rev. 1.01 www.MonolithicPower.com 1 11/21/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved.
DESCRIPTION
The EV 9928-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 archit ecture 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. Fu ll 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 Symbol Value Units Input Voltage VIN 6-60(1) V Output Voltage VOUT 5 V Output Current IOUT 7 A
FEATURES
6V to 60V Input Voltage for This 5V Output Board Dual N-Channel MOSFET Driver Low Dropout Operation: Maximum Duty Cycle at 99.5% 180º Out-of-Phase SYNCO Output Programmable Soft Start Output Power Good Indicator Selectable Threshold for Cycle-by-Cycle Current Limit Programmable Frequency Range: 100kHz - 1000kHz 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—SYNCHRONOUS STEP DOWN CONTROLLER EV BOARD EV9928-F-00B Rev. 1.01 www.MonolithicPower.com 2 11/21/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. EVALUATION BOARD SCHEMATIC 100K 37.4K SYNCO EN/SYNC 680pF 51K NS NS 6V-60V 0.1uF 0.007 63.4K 12K VOUT 5V7A 4.7uH L2 4.7uF C1B 4.7uF C1A 10nF NS R10 NS C10 R11 R12 2.2 R13 NS C13 0.47uF C1C PG 1uF VCC2 VOUT VOUT VCC1 37.4K R4NS R14 220pF C11 100K R15 VIN VIN R16 NS R17 NS C12 4.7uF 220uF C2B NS C2C 22uF C2A NS C2D VCC1 R18 D3 D20 R19 R20 VIN VEMI GND NS CIN4 NS FB1 47uF CIN5 NS NS CIN3 NS CIN1 NS CIN2 IN FREQ EN/SYNC SYNCO SS ILIM COMP FB CCM/AAM SGND SENSE- SENSE+ PG VCC2 PGND BG VCC1 SW TG BST MP9928 JP1 NS NS NS VCC1
EV9928-F-00B—SYNCHRONOUS STEP DOWN CONTROLLER EV BOARD EV9928-F-00B Rev. 1.01 www.MonolithicPower.com 3 11/21/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. EV9928-F-00B BILL OF MATERIALS Qty Ref Value Description Package Manufacturer Part Number CIN1, CIN2, CIN3, CIN4 NS
1 CIN5 47μF Electrolytic Cap;100V;
10*10.5;2000H;105℃ SMD Jiang Hai VZ2-100V47 2 C1A,C1B 4.7μF Ceramic Cap;100V;X7S 1210 TDK C3225X7S2A475K 1 C1C 0.47μF Ceramic Cap;100V;X7R 0805 muRata GRM21BR72A474KA73L 1 C2B 220μF POSCAP;6.3V; D2 SANYO 6TPE220MI
1 C2A 22μF Ceramic Cap;16V;X7R 1210 muRata GRM32ER71C226KE79
0 C2C,C2D NS
1 C3 4.7μF Ceramic Cap;16V;X7R 0805 muRata GRM21BR71C475KA73L
1 C4 1μF Ceramic Cap;16V;X7R 0603 muRata GRM188R71C105KA12D
1 C5 10nF Ceramic Cap;50V;X7R 0603 muRata GRM188R71H103KA01
1 C6 680pF Ceramic Cap;50V;X7R 0603 muRata GRM188R71H681KA01D
C7,C9, C10,C12, C13 NS 1 C8 0.1μF Ceramic Cap;16V;X7R 0603 muRata GRM188R71C104KA01D
1 C11 220pF CeramicCap;100V;X7R 0603 muRata GRM21BR72A221KA01L
1 D1 1N4148WS Diode;75V;0.15A; SOD-323 Diodes 1N4148WS-7-F
0 D2 NS
1 D3 DFLS1150 Diode;150V;1A; Diodes DFLS1150
0 FB1 NS
0 L1 NS
1 L2 4.7μH Inductor;4.7μH; 7.7mOhm;15A SMD Wurth 7443551470
2 M1, M2 SQJ850EP N-Channel MOSFET;
60V;24A;0.023Ohm 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
R3, R11,R12, R19,R20
0 Film Resistor;5% 0603
1 R5 51k Film Resistor;1% 0603 ROYAL RC0603FR-0751KL
0 R6,R10
EV9928-F-00B—SYNCHRONOUS STEP DOWN CONTROLLER EV BOARD EV9928-F-00B Rev. 1.01 www.MonolithicPower.com 4 11/21/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. EV9928-F-00B BILL OF MATERIALS (continued) Qty Ref Value Description Package Manufacturer Part Number 1 R7 0.007 Film Resistor;1%;1W 2512 CYNTEC RL3264-6-R007-FN 1 R8 63.4k Film Resistor;1% 0603 ROYAL RC0603FR-0763K4L
1 R9 12k Film Resistor;1% 0603 ROYAL RC0603FR-0712KL
1 R13 2.2 Film Resistor;1% 0603 ROYAL RC0603FR-072R2L
1 R14 10 Film Resistor;1% 0805 ROYAL RC0805JR-0710RL
1 R16 1M Film Resistor;1% 0603 ROYAL RC0603FR-071ML
1 R18 10 Film Resistor;1% 0603 ROYAL RC0603FR-0710RL
1 U1 MP9928GF Synchronous Step-Down
EV9928-F-00B—SYNCHRONOUS STEP DOWN CONTROLLER EV BOARD EV9928-F-00B Rev. 1.01 www.MonolithicPower.com 5 11/21/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. EVB TEST RESULTS VIN = 24V, VOUT = 5V, L = 4.7µ H, TA = 25º C, unless otherwise noted.
EV9928-F-00B—SYNCHRONOUS STEP DOWN CONTROLLER EV BOARD EV9928-F-00B Rev. 1.01 www.MonolithicPower.com 6 11/21/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. EVB TEST RESULTS (continued) VIN = 24V, VOUT = 5V, L = 4.7µ H, TA = 25º C, unless otherwise noted.
EV9928-F-00B—SYNCHRONOUS STEP DOWN CONTROLLER EV BOARD EV9928-F-00B Rev. 1.01 www.MonolithicPower.com 7 11/21/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. EVB TEST RESULTS (continued) VIN = 24V, VOUT = 5V, L = 4.7µ H, TA = 25º C, unless otherwise noted.
EV9928-F-00B—SYNCHRONOUS STEP DOWN CONTROLLER EV BOARD 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 9 11/21/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. 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.