Texas Instruments

LM74670-Q1 Zero IQ Smart Diode Rectifier Controllers

Texas Instruments offers its LM74670-Q1 controller devices with a 70 µA gate drive

Image of TI's LM74670-Q1 Zero IQ Smart Diode Rectifier ControllersTexas Instruments' LM74670-Q1 is a controller device that can be used with an N-channel MOSFET in full- or half-bridge rectifier architectures for alternators. It is designed to drive an external MOSFET to emulate an ideal diode. A unique advantage of this scheme is that it is not ground referenced, thus it has zero IQ. The Schottky diodes in full- or half-bridge rectifiers and alternators can be replaced with the LM74670-Q1 solution to avoid forward conduction diode losses and produce more efficient AC-DC converters.

The LM74670-Q1 controller provides a gate drive for an external N-channel MOSFET and a fast response internal comparator to pull-down the MOSFET gate in the event of reverse polarity. This device can support an AC signal frequency up to 300 Hz.

Features
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: -40°C to 125°C ambient operating temperature range
    • Exceeds HBM ESD classification level 2
    • Device CDM ESD classification level C4B
  • Peak input AC voltage: 42 V
  • Zero IQ
  • Charge pump gate driver for external N-channel MOSFET
  • Low forward-voltage drop and less power dissipation compared to Schottky diode
  • Capable of handling AC signal up to 300 Hz frequency
Applications
  • AC rectifiers
  • Alternators
  • Power tools
  • Reverse polarity protection

LM74670-Q1 Zero IQ Smart Diode Rectifier Controllers

ImageManufacturer Part NumberDescriptionRatio - Input:OutputInternal Switch(s)Available QuantityPriceView Details
IC SMART DIODE CTLR 8VSSOPLM74670QDGKTQ1IC SMART DIODE CTLR 8VSSOPN:1No422 - Immediate$23.21View Details
IC SMART DIODE CTLR 8VSSOPLM74670QDGKRQ1IC SMART DIODE CTLR 8VSSOPN:1No1495 - Immediate$20.42View Details

Evaluation Module

ImageManufacturer Part NumberDescriptionFunctionUtilized IC / PartPrimary AttributesAvailable QuantityPriceView Details
EVAL BOARD FOR LM74670-Q1LM74670-SQEVMEVAL BOARD FOR LM74670-Q1ORing Controller / Ideal DiodeLM74670-Q1-2 - Immediate$286.47View Details

Associated Parts

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
IC SMART DIODE CTLR 8VSSOPLM74610QDGKTQ1IC SMART DIODE CTLR 8VSSOP1029 - Immediate$21.98View Details
IC SMART DIODE CTLR 8VSSOPLM74610QDGKRQ1IC SMART DIODE CTLR 8VSSOP3030 - Immediate$19.02View Details
EVAL BOARD FOR LM74610-Q1LM74610-DQEVMEVAL BOARD FOR LM74610-Q12 - Immediate$286.47View Details
EVAL BOARD FOR LM74610-Q1LM74610-SQEVMEVAL BOARD FOR LM74610-Q11 - Immediate$246.96View Details
Published: 2016-02-15

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