NCV891930: Low Quiescent Current 2 MHz Automotive Synchronous Buck Controller

Datasheet: Low Quiescent Current 2 MHz Automotive Synchronous Buck Controller
Rev. 4 (365kB)
Product Overview
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Product Change Notification
The NCV891930 is a 2 MHz fixed−frequency low quiescent current buck controller with spread spectrum that operates up to 38 V (typical). It may be synchronized to a clock or to separate NCV891930. Peak current mode control is employed for fast transient response and tight regulation over wide input voltage and output load ranges. Feedback compensation is internal to the device, permitting design simplification. The NCV891930 is capable of converting from an automotive input voltage range of 3.5 V (4.5 V during startup) to 18 V at a constant base switching frequency above the sensitive AM band, eliminating the need for costly filters and EMI countermeasures. The switching frequency folds back to 1 MHz for input voltages between 20 V up to 38 V (typical). Under load dump conditions up to 45 V the regulator shuts down. A high voltage bias regulator with automatic switchover to an external 5 V bias supply is used for improved efficiency. Several protection features such as UVLO, current limit, short circuit protection, and thermal shutdown are provided. 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 solution. (410 kHz version offered with NCV881930)
Features
 
  • 30 µA Operating Current at No Load
  • 75 mV Current Limit Sensing
  • Capable of 45 V Load Dump
  • Board Selectable Fixed Output Voltages With Lockout
  • 2 MHz Operating Frequency with synchronization capability
  • Adaptive Non−Overlap Circuitry
  • Integrated Spread Spectrum
  • Logic level Enable Input Can be Tied Directly to Battery
  • Short Circuit Protection Pulse Skip
  • Battery monitoring for UVLO and Overvoltage Protection
  • Thermal Shutdown (TSD)
  • Adjustable Soft−Start
  • Individual Enable and Reset pins
  • QFN Package with Wettable Flanks (pin edge plating)
  • NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable
  • These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant
Applications   End Products
  • Radio and Infotainment
  • Telematics
  • ADAS (safety applications)
  • Instrumentations & Clusters
 
  • Automotive
Evaluation/Development Tool Information
Product Status Compliance Short Description Action
NCV891930MW00-33GEVB Active
Pb-free
Automotive Low-Iq 2 MHz Synchronous Buck Controller, 3.3 V - 6A Evaluation Board
NCV891930MW00-50GEVB Active
Pb-free
Automotive Low-Iq 2 MHz Synchronous Buck Controller, 5.0 V - 6A Evaluation Board
NCV891930MW01-365GEVB Active
Pb-free
Automotive Low-Iq 2 MHz Synchronous Buck Controller, 3.65 V - 6A Evaluation Board
NCV891930MW01-40GEVB Active
Pb-free
Automotive Low-Iq 2 MHz Synchronous Buck Controller, 4.0 V - 6A Evaluation Board
Availability & Samples
Specifications
Interactive Block Diagram
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
NCV891930MW00AR2G Active
AEC Qualified
PPAP Capable
Pb-free
Halide free
NCV891930, 3.3V or 5V QFNW-24 484AE 1 260 Tape and Reel 4000 $1.0666
NCV891930MW00R2G Last Shipments
AEC Qualified
PPAP Capable
Pb-free
Halide free
NCV891930, 3.3 V/5 V Option QFNW-24 484AE 1 260 Tape and Reel 4000  
NCV891930MW01AR2G Active
AEC Qualified
PPAP Capable
Pb-free
Halide free
NCV891930, 3.65V or 4V QFNW-24 484AE 1 260 Tape and Reel 4000 $1.3333
NCV891930MW01R2G Last Shipments
AEC Qualified
PPAP Capable
Pb-free
Halide free
NCV891930, 3.65 V/4 V Option QFNW-24 484AE 1 260 Tape and Reel 4000  
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory

Product
Description
Pricing ($/Unit)
Compliance
Status
Topology
Phases
Control Mode
VCC Min (V)
VCC Max (V)
fSW Typ (kHz)
Package Type
NCV891930MW00AR2G  
 $1.0666 
Pb
A
H
P
 Active   
Step-Down
1
Current/Voltage Mode
3.5
45
2000
QFNW-24
NCV891930MW01AR2G  
 $1.3333 
Pb
A
H
P
 Active   
Step-Down
1
Current/Voltage Mode
3.5
45
2000
QFNW-24
Case Outlines
484AE   
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