MAX16930

2MHz, 36V, Dual Buck with Preboost and 20µA Quiescent Current

Industry's Highest Performance Automotive Dual Buck Controller with Preboost Enables a Space-Efficient, Crank-Ready Design


Please check latest availability status for a specific part variant.

Description

The MAX16930/MAX16931 offer two high-voltage, synchronous step-down controllers and a step-up preboost controller. They operate with an input voltage supply from 2V to 42V with preboost active and can operate in drop-out condition by running at 95% duty cycle. The devices are intended for applications with mid- to high-power requirements that operate at a wide input voltage range such as during automotive cold-crank or engine stop-start conditions.

The MAX16930/MAX16931 step-down controllers operate 180° out-of-phase at frequencies up to 2.2MHz to allow small external components, reduced output ripple, and to guarantee no AM band interference. The switching frequency is resistor adjustable. The FSYNC input programmability enables three frequency modes for optimized performance: forced fixed-frequency operation, skip mode with ultra-low quiescent current (20µA), and synchronization to an external clock. The devices also provide a spread-spectrum option to minimize EMI interference.

The MAX16930/MAX16931 are offered with an asynchronous step-up controller. This preboost circuitry turns on during low input voltage conditions. It is designed to provide power to step-down controller channels with input voltages as low as 2V.

The devices also feature a power-OK monitor and overvoltage and undervoltage lockout. Protection features include cycle-by-cycle current limit and thermal shutdown.

The devices are available in 40-pin TQFN-EP and side-wettable QFND-EP packages and are specified for operation over the -40°C to +125°C automotive temperature range.

MAX16930, MAX16931: Typical Operating Circuit MAX16930, MAX16931: Typical Operating Circuit Enlarge+

Key Features

  • Meets Stringent OEM Module Power Consumption and Performance Specifications
    • 20µA Quiescent Current in Skip Mode
    • ±1% Output-Voltage Accuracy: 5.0V/3.3V Fixed or Adjustable Between 1V and 10V
  • Enables Crank-Ready Designs
    • Integrated Preboost for Operation Down to 2V in Bootstrap Mode
    • Wide Input Supply Range from 3.5V to 36V (without Preboost)
  • EMI Reduction Features Reduce Interference with Sensitive Radio Bands without Sacrificing Wide Input Voltage Range
    • 50ns (typ) Minimum On-Time Guarantees Skip-Free Operation for 3.3V Output from Car Battery at 2.2MHz
    • Frequency-Synchronization Input
    • Resistor-Programmable Frequency Between 200kHz and 2.2MHz
  • Integration and Thermally Enhanced Packages Save Board Space and Cost
    • Dual, 2MHz Step-Down Controllers
    • 180° Out-of-Phase Operation
    • Current-Mode Controllers with Forced-Continuous and Skip Modes
    • Thermally Enhanced 40-Pin TQFN-EP and Side-Wettable QFND-EP Packages
  • Protection Features Improve System Reliability
    • Supply Overvoltage and Undervoltage Lockout
    • Overtemperature and Short-Circuit Protection

Applications/Uses

  • Distributed DC Power Systems
  • Navigation and Radio Head Units
  • POL Applications for Automotive Power
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Output Adjust. MethodSwitch TypeSynchronous SwitchingPower Good SignalDC-DC OutputsOper. Freq.
(kHz)
Design ToolsPackage/Pins
minmaxminmax
MAX16930 242110
Preset
Resistor
ExternalYesYes32500EE-Sim
TQFN/40
See All Step-Down Switching Regulators (404)

Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Preset VOUT
(V)
VOUT1 Tolerance
(±%)
IOUT1
(A)
IOUT1
(A)
Output Adjust. MethodSwitch TypeSynchronous SwitchingPower Good SignalICC
(mA)
DC-DC OutputsAlternate TopologyOper. Freq.
(kHz)
Design ToolsPackage/PinsOper. Temp.
(°C)
Budgetary
Price
minmaxminmaxmaxmaxmaxSee Notes
MAX16930 242110
3.3
5
1--
Preset
Resistor
ExternalYesYes-3
Step-Down
Step-Up
1000
2200
2500
EE-Sim
QFND/40
TQFN/40
-40 to +85
-40 to +125
$4.54 @1k
MAX16931 -10100.04-
200
300
400
500
1000
QFND/40
TQFN/40
$5.23 @1k
See All Step-Down/Up Switching Regulators (30)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.


MAX16930EVKIT: Evaluation Kit for the MAX16930 and MAX16931

Technical Documents

App Note 5837 Auto Radio Head Units: More Demands, Harsh Environment Drive Need for Sophisticated Power-Management ICs

Quality and Environmental Data

Request Reliability Report for: MAX16930 
Lead-Free Package Tin (Sn) Whisker Reports

Tools & Models

  • EE-Sim: Design & Simulate MAX16930
  • MAX16930 SIMPLIS Schematic
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

    Quality Management System >
    Environmental Management System >

     
    Status:
    Package:
    Temperature:

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