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SM72295

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3-A, 100-V full bridge gate driver with Integrated current sense amplifier

Product details

Bootstrap supply voltage (max) (V) 100 Power switch MOSFET Input supply voltage (min) (V) 8 Input supply voltage (max) (V) 14 Peak output current (A) 3 Operating temperature range (°C) -40 to 125 Undervoltage lockout (typ) (V) 8 Rating Catalog Propagation delay time (µs) 0.022 Rise time (ns) 8 Fall time (ns) 8 Iq (mA) 0.01 Input threshold TTL Channel input logic TTL Switch node voltage (V) -1 Features Current sense Driver configuration Quad inputs
Bootstrap supply voltage (max) (V) 100 Power switch MOSFET Input supply voltage (min) (V) 8 Input supply voltage (max) (V) 14 Peak output current (A) 3 Operating temperature range (°C) -40 to 125 Undervoltage lockout (typ) (V) 8 Rating Catalog Propagation delay time (µs) 0.022 Rise time (ns) 8 Fall time (ns) 8 Iq (mA) 0.01 Input threshold TTL Channel input logic TTL Switch node voltage (V) -1 Features Current sense Driver configuration Quad inputs
SOIC (DW) 28 184.37 mm² 17.9 x 10.3
  • Renewable Energy Grade
  • Dual Half Bridge MOSFET Drivers
  • Integrated 100V Bootstrap Diodes
  • Independent High and Low Driver Logic Inputs
  • Bootstrap Supply Voltage Range up to 115V DC
  • Two Current Sense Amplifiers with Externally Programmable Gain and Buffered Outputs
  • Programmable Over Voltage Protection
  • Supply Rail Under-Voltage Lockouts with Power Good Indicator

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Package

  • SOIC-28
  • Renewable Energy Grade
  • Dual Half Bridge MOSFET Drivers
  • Integrated 100V Bootstrap Diodes
  • Independent High and Low Driver Logic Inputs
  • Bootstrap Supply Voltage Range up to 115V DC
  • Two Current Sense Amplifiers with Externally Programmable Gain and Buffered Outputs
  • Programmable Over Voltage Protection
  • Supply Rail Under-Voltage Lockouts with Power Good Indicator

All trademarks are the property of their respective owners.

Package

  • SOIC-28

The SM72295 is designed to drive 4 discrete N type MOSFET’s in a full bridge configuration. The drivers provide 3A of peak current for fast efficient switching and integrated high speed bootstrap diodes. Current sensing is provided by 2 transconductance amplifiers with externally programmable gain and filtering to remove ripple current to provide average current information to the control circuit. The current sense amplifiers have buffered outputs available to provide a low impedance interface to an A/D converter if needed. An externally programmable input over voltage comparator is also included to shutdown all outputs. Under voltage lockout with a PGOOD indicator prevents the drivers from operating if VCC is too low.

The SM72295 is designed to drive 4 discrete N type MOSFET’s in a full bridge configuration. The drivers provide 3A of peak current for fast efficient switching and integrated high speed bootstrap diodes. Current sensing is provided by 2 transconductance amplifiers with externally programmable gain and filtering to remove ripple current to provide average current information to the control circuit. The current sense amplifiers have buffered outputs available to provide a low impedance interface to an A/D converter if needed. An externally programmable input over voltage comparator is also included to shutdown all outputs. Under voltage lockout with a PGOOD indicator prevents the drivers from operating if VCC is too low.

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Technical documentation

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Type Title Date
* Data sheet SM72295 Photovoltaic Full Bridge Driver datasheet (Rev. E) 05 Apr 2013
Application note Voltage Fed Full Bridge DC-DC & DC-AC Converter High-Freq Inverter Using C2000 (Rev. D) 07 Apr 2021
Application brief External Gate Resistor Selection Guide (Rev. A) 28 Feb 2020
Application brief Understanding Peak IOH and IOL Currents (Rev. A) 28 Feb 2020
Application note Optimizing MOSFET Characteristics by Adjusting Gate Drive Amplitude (Rev. A) 14 Nov 2018
More literature Fundamentals of MOSFET and IGBT Gate Driver Circuits (Replaces SLUP169) (Rev. A) 29 Oct 2018
Application note 800VA Pure Sine Wave Inverter's Reference Design (Rev. A) PDF | HTML 01 Aug 2017
Application note SM72295 For Bi-Directional DC-to-DC Conversion (Rev. A) 01 Mar 2017
EVM User's guide SM72295EVM User’s Guide 05 May 2015
Technical article Making smart energy smarter with renewable power storage PDF | HTML 22 Apr 2015
Application note AN-2116 SolarMagic ICs in Micro-inverter Applications (Rev. B) 06 May 2013
Application note AN-2122 SM3320-RF-EV Reference Design (Rev. E) 06 May 2013
Application note SM3320-BATT-EV Charge Controller Reference Design (Rev. C) 06 May 2013
Application note SM72295: Highly Integrated Gate Driver for 800VA to 3KVA Inverter Design (Rev. B) 06 May 2013

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