NCP5425: Dual Synchronous Buck Controller

The NCP5425 is a highly flexible dual buck controller with internal gate drivers that can be used with two input power supplies and one or two outputs in mutiple configurations. The part contains all the circuitry required for two independent synchronous dual NFET buck regulators utilizing a feed forward voltage mode control method. The NCP5425 can run from a single supply ranging from 4.6 to 12 volts and support a single two phase or dual single phase outputs. When used as a dual output controller, the second output tracks voltage transients from the first. Power blanking for low noise applications is supported as well as independent cycle-by-cycle current limiting. The part is available in a 20 pin TSSOP package allowing the designer to minimize PCB area.

特性
  • Operation Over 4.6 to 13.2 Volts
  • Dual Synchronous Buck Design
  • Programmable Power Sharing and Budgeting from Two Independent Supplies
  • 0.8 Volt +/- 1% Reference for Low Voltage Outputs
  • 1.5A Peak Power Drive
  • Switch Blanking for Noise Sensitive Applications through use of ROSC Pin
  • Programmable Frequency, 150 kHz to 750 kHz Operation
  • Programmable Soft-Start
  • Cycle-to-Cycle Overcurrent Protection
  • Independent Programmable Current Limits
  • 100% Duty Cycle for Fast Transient Response
  • Internal Slope Compensation
  • Out-of-Phase Synchronization between the Controllers
  • Configurable as a Single Two Phase Output or Two Single Phase Outputs
  • These are Pb-Free Devices
  • Input Undervoltage Lockout
  • On/Off Enable through use of the COMP Pins
  • Power Supply Sequencing
数据表 (1)
Document TitleDocument ID/SizeRevisionRevision Date
Dual Synchronous Buck ControllerNCP5425/D (172.0kB)8
评估板文档 (4)
Document TitleDocument ID/SizeRevisionRevision Date
NCP5425SOEVB Bill of MaterialsNCP5425SOEVB_BOM (84.0kB)0
NCP5425SOEVB Gerber Layout Files (Zip Format)NCP5425SOEVB_GERBER (85.0kB)0
NCP5425SOEVB SchematicNCP5425SOEVB_SCHEMATIC (42.0kB)0
NCP5425SOEVB Test ProcedureNCP5425SOEVB_TEST_PROCEDURE (559kB)1
封装图纸 (1)
Document TitleDocument ID/SizeRevision
TSSOP-20 WB948E-02 (39.7kB)D
评估板与开发工具
产品状况Compliance简短说明
NCP5425SOEVBActiveBuck Controller Evaluation Board
产品订购型号
产品状况Compliance封装MSL*容器预算价格 (1千个数量的单价)
NCP5425DBGLast ShipmentsPb-free Halide freeTSSOP-20948E-021Tube75
NCP5425DBR2GActivePb-free Halide freeTSSOP-20948E-021Tape and Reel2500$0.8
订购产品技术参数
ProductTopologyPhasesControl ModeVCC Min (V)VCC Max (V)fSW Typ (kHz)tres Typ (ns)
NCP5425DBR2GStep-Down1V24.7513.2750200
Dual Synchronous Buck Controller (172.0kB) NCP5425
NCP5425SOEVB BOM - 84 NCP5425SOEVB
NCP5425SOEVB GERBER - 85 NCP5425SOEVB
NCP5425SOEVB SCHEMATIC - 42 NCP5425SOEVB
NCP5425SOEVB TEST PROCEDURE - 559 KB NCP5425SOEVB
TSSOP-20 WB NLSX3018