Evaluation Board for the ADP2380 and ADP2381 Synchronous Step-Down Regulators
User guide for the ADP2380/ADP2381 evaluation board, a 20V step-down regulator solution providing 4A or 6A output current with programmable frequency and external synchronization.
Overview
The UG-504 user guide provides comprehensive technical details for the evaluation board supporting the ADP2380 and ADP2381 synchronous step-down regulators. The board operates from an input range of 4.5 V to 20 V and is configured for output currents of 4 A (ADP2380) or 6 A (ADP2381). While the board is preset to a 3.3 V output at 500 kHz, it supports user-adjustable output voltages, soft start times, and switching frequencies between 250 kHz and 1.4 MHz. The design includes features such as external clock synchronization with a 180-degree phase shift, programmable undervoltage lockout (UVLO), and a power-good output. The document contains evaluation procedures, detailed schematics, PCB layout artwork, and a full bill of materials featuring components from Analog Devices, Murata, and Vishay.
Use Cases
- Evaluation of ADP2380 and ADP2381 performance
- Prototyping high-current synchronous step-down power stages
- Designing multiphase power solutions with synchronized clocks
- Industrial and consumer electronics power management
Topics
Referenced Parts
Analog Devices
Regulator, 20 V, 4 A, synchronous step-down with low-side driver, 16-lead, TSSOP_EP
Analog Devices
Regulator, 20 V, 6 A, synchronous step-down with low-side driver, 16-lead, TSSOP_EP
GRM32ER70J476KE19L
Murata
Capacitor, 47 μF, 6.3 V, 1210
GRM32ER70J476KE19L/
Murata
1 C3 Capacitor, 47 μF, 6.3 V, 1210 GRM32ER70J476KE19L/Murata
| FDS6298 | Fairchild | N-channel MOSFET, V DS = 30 V, RDS(ON) = 9.4 mΩ, I D = 13 A, SO8 |
| M20-9990245 | Harwin | Test point, 2.54 mm pitch SIL vertical PC tail pin header |
| GRM1885C1H2R2BZ01D | Murata | Capacitor, 2.2 pF, 50 V, 0603 |
| GRM188R61C105KA93D | Murata | Capacitor, 1 μF, 16 V, 0603 |
| GRM188R61H102KA01D | Murata | Capacitor, 1000 pF, 50 V, 0603 |
| GRM188R71C104KA01D | Murata | Capacitor, 0.1 μF, 16 V, 0603 |
| GRM188R71C223KA01D | Murata | Capacitor, 22 nF, 16 V, 0603 |
| GRM188R71H681KA01D | Murata | Capacitor, 680 pF, 50 V, 0603 |
| GRM31CR61E106MA12L | Murata | Capacitor, 10 μF, 25 V, 1206 |
| GRM32ER60J107ME20L | Murata | Capacitor, 100 μF, 6.3 V, 1210 |
| M20-9990245 | Harwin | M20-9990245/Harwin |
| GRM1885C1H2R2BZ01D | Murata | 1 C11 Capacitor, 2.2 pF, 50 V, 0603 GRM1885C1H2R2BZ01D/Murata |
| GRM188R61C105KA93D | Murata | 1 C8 Capacitor, 1 μF, 16 V, 0603 GRM188R61C105KA93D/Murata |
| GRM188R61H102KA01D | Murata | 1 C10 Capacitor, 1000 pF, 50 V, 0603 GRM188R61H102KA01D/Murata |
| GRM188R71C104KA01D | Murata | 1 C1 Capacitor, 0.1 μF, 16 V, 0603 GRM188R71C104KA01D/Murata |
| GRM188R71C223KA01D | Murata | 1 C9 Capacitor, 22 nF, 16 V, 0603 GRM188R71C223KA01D/Murata |
| GRM188R71H681KA01D | Murata | 1 C10 Capacitor, 680 pF, 50 V, 0603 GRM188R71H681KA01D/Murata |
| GRM31CR61E106MA12L | Murata | 2 C5, C6 Capacitor, 10 μF, 25 V, 1206 GRM31CR61E106MA12L/Murata |
| GRM32ER60J107ME20L | Murata | 2 C2, C3 Capacitor, 100 μF, 6.3 V, 1210 GRM32ER60J107ME20L/Murata |
| CRCW06030000Z0EA | Vishay | 2 R2, R3 Resistor, 0 Ω, 1%, 0603 CRCW06030000Z0EA/Vishay Dale |
| CRCW0603100KFKEA | Vishay | 2 R1, R7 Resistor, 100 kΩ, 1%, 0603 CRCW0603100KFKEA/Vishay Dale |
| CRCW060310K0FKEA | Vishay | 1 R9 Resistor, 10 kΩ, 1%, 0603 CRCW060310K0FKEA/Vishay Dale |
| CRCW06032K21FKEA | Vishay | 1 R11 Resistor, 2.21 kΩ, 1%, 0603 CRCW06032K21FKEA/Vishay Dale |
| CRCW060373K2FKEA | Vishay | 1 R8 Resistor, 73.2 kΩ, 1%, 0603 CRCW060373K2FKEA/Vishay Dale |
| CRCW060393K1FKEA | Vishay | 1 R8 Resistor, 93.1 kΩ, 1%, 0603 CRCW060393K1FKEA/Vishay Dale |
| ADP2380/ | Analog Devices | Regulator, 20 V, 4 A, synchronous step-down with low-side driver, 16-lead, TSSOP_EP |
| ADP2381/ | Analog Devices | Regulator, 20 V, 6 A, synchronous step-down with low-side driver, 16-lead, TSSOP_EP |
| FDVE1040-2R2M | Toko | Inductor, FDVE1040, L = 2.2 μH, I RAT = 11.4 A, DCR = 6.1 mΩ |
| FDVE1040-4R7M | Toko | Inductor, FDVE1040, L = 4.7 μH, I RAT = 8.2 A, DCR = 12.5 mΩ |
| CRCW06030000Z0EA | Vishay Dale | Resistor, 0 Ω, 1%, 0603 |
| CRCW0603100KFKEA | Vishay Dale | Resistor, 100 kΩ, 1%, 0603 |
| CRCW060310K0FKEA | Vishay Dale | Resistor, 10 kΩ, 1%, 0603 |
| CRCW06032K21FKEA | Vishay Dale | Resistor, 2.21 kΩ, 1%, 0603 |
| CRCW060373K2FKEA | Vishay Dale | Resistor, 73.2 kΩ, 1%, 0603 |
| CRCW060393K1FKEA | Vishay Dale | Resistor, 93.1 kΩ, 1%, 0603 |
| ADP2380/ | Analog Devices | ADP2380/Analog Devices, Inc. |
| ADP2381/ | Analog Devices | ADP2381/Analog Devices, Inc. |
| GRM32ER70J476KE19L | Murata | Capacitor, 47 μF, 6.3 V, 1210 |
| GRM32ER70J476KE19L/ | Murata | 1 C3 Capacitor, 47 μF, 6.3 V, 1210 GRM32ER70J476KE19L/Murata |