NCV890130: Automotive Switching Regulator, 1.2 A, 2 MHz, 45 V Load Dump

The NCV890130 is a fixed-frequency, monolithic, Buck switching regulator intended for Automotive, battery-connected applications that must operate with up to a 32 V input supply. The regulator is suitable for systems with low noise and small form factor requirements often encountered in automotive driver information systems. The NCV890130 is capable of converting the typical 4.5 V to 18 V automotive input voltage range to outputs as low as 3.3 V at a constant switching frequency above the sensitive AM band, eliminating the need for costly filters and EMI countermeasures. The NCV890130 also provides several protection features expected in Automotive power supply systems such as current limit, short circuit protection, and thermal shutdown. In addition, the high switching frequency produces low output voltage ripple even when using small inductor values and an all-ceramic output filter capacitor - forming a space-efficient switching regulator solution.

Features
  • 2 MHz Free-running Switching Frequency
  • Internal N-Channel Power Switch
  • Low VIN Operation Down to 4.5 V
  • High VIN Operation to 32 V
  • Withstands Load Dump to 45 V
  • Logic level Enable Input Can be Directly Tied to Battery
  • 1.4 A (min) Cycle-by-Cycle Peak Current Limit
  • Short-Circuit Protection enhanced by Frequency Foldback
  • ±1.75% Output Voltage Tolerance
  • Output Voltage Adjustable Down to 0.8 V
  • 1.4 ms Internal Soft-Start
  • Thermal Shutdown (TSD)
Benefits
  • Enables to use small size, low cost inductor and EMC filter
  • Fewer external components
  • Maintains operation during battery transients
  • Maintains operation during battery transients
  • Protects the load from load dump
  • Flexible enable
  • Protects against over current faults
  • Protects against short circuits on the output
  • Highly accurate regulation.
  • Suitable for a wide range of applications
  • Limits inrush current
  • Thermally protects IC
Applications
  • Audio
  • Infotainment
  • Safety - Vision Systems
  • Instrumentation
End Products
  • Automotive
Design & Development Tools (1)
Document TitleDocument ID/SizeRevisionRevision Date
NCV890100/01/30/31 Design Worksheet - Continuous Conduction ModeNCV8901_00_01_30_31 design sheet (203kB)2Nov, 2014
Package Drawings (2)
Document TitleDocument ID/SizeRevision
DFN8, 3x3, 0.65P506BY (56.5kB)A
SOIC-8 EP751AC (33.6kB)B
Simulation Models (4)
Document TitleDocument ID/SizeRevisionRevision Date
Average model for ac simulation on PSPICENCV8901XX_AC_PSPICE (220kB)1
Average model for fast transient simulations on PSPICE (no switching)NCV8901XX_TRANAVG_PSPICE (246kB)1
NCV890100 switching model for PSPICENCV890100_SPICE (11.0kB)0
average model for AC simulation on Spice simulators (other than Pspice)NCV8901xx_SPICE_AC_AVG (194kB)3.1Sep, 2014
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
1.2 A, 2 MHz Automotive Buck Switching RegulatorNCV890130/D (146kB)3Oct, 2014
Evaluation Board Documents (4)
Document TitleDocument ID/SizeRevisionRevision Date
NV890130PDR2GEVB Bill of Materials ROHS CompliantNV890130PDR2GEVB_BOM_ROHS.PDF (40.0kB)0
NV890130PDR2GEVB Gerber Layout Files (Zip Fomat)NV890130PDR2GEVB_GERBER.ZIP (50.0kB)0
NV890130PDR2GEVB SchematicNV890130PDR2GEVB_SCHEMATIC.PDF (138.0kB)0
NV890130PDR2GEVB Test ProcedureNV890130PDR2GEVB_TEST_PROCEDURE.PDF (121.0kB)0
Evaluation/Development Tool Information
ProductStatusComplianceShort Description
NV890130PDR2GEVBActivePb-freeFixed-Frequency Monolithic Buck Switching Regulator Evaluation Board
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
NCV890130MWTXGActiveAEC Qualified PPAP Capable Pb-freeDFN-8506BY1Tape and Reel3000$1.125
NCV890130PDR2GActiveAEC Qualified PPAP Capable Pb-freeSOIC-8 EP751AC2Tape and Reel2500$1.5
Specifications
ProductTopologyControl ModeVCC Min (V)VCC Max (V)VO Typ (V)IO Typ (A)Efficiency (%)fSW Typ (kHz)
NCV890130MWTXGStep-DownCurrent Mode4.545Adjustable1.22200
NCV890130PDR2GStep-DownCurrent Mode4.545Adjustable1.22200
1.2 A, 2 MHz Automotive Buck Switching Regulator (146kB) NCV890130
NCV890100/01/30/31 Design Worksheet - Continuous Conduction Mode NCV890131
Average model for ac simulation on PSPICE NCV890131
Average model for fast transient simulations on PSPICE (no switching) NCV890131
NCV890100 switching model for PSPICE NCV890231
average model for AC simulation on Spice simulators (other than Pspice) NCV890131
NV890130PDR2GEVB BOM ROHS NV890130PDR2GEVB
NV890130PDR2GEVB GERBER NV890130PDR2GEVB
NV890130PDR2GEVB SCHEMATIC NV890130PDR2GEVB
NV890130PDR2GEVB TEST PROCEDURE NV890130PDR2GEVB
DFN8, 3x3, 0.65P NCV890430
SOIC-8 EP NCV8668