DC/DC converter system

Products and reference designs

DC/DC converter system

Block diagram

Overview

Our integrated circuits and reference designs help you create DC/DC converter designs that efficiently transfer energy to and from one power rail to another in systems ranging from 12 V to 800 V.

Design requirements

DC/DC converter systems require:

  • High performance and fast digital control loops enabling highly efficient power conversion and increased power density.
  • Simplified and efficient integration of bidirectional 12-V to 48-V DC/DC converter solutions.
  • Load balancing for parallel operating (multi-phase) power supplies.

Block diagram

Find products and reference designs for your system.

DC/DC converter system

LV rail LV rail HV battery HV battery Secondary temperature sense Secondary temperature sense Temperature sensor Temperature sensor Microcontroller Microcontroller MCU MCU Primary current sensing bias supply Primary current sensing bias supply Isolated amplifier bias supply Isolated amplifier bias supply Gate driver bias supply Gate driver bias supply Gate driver bias supply Gate driver bias supply PMIC PMIC LDO/PMIC LDO/PMIC Digital isolation Digital isolation Communication/ diagnostics Communication/ diagnostics CAN CAN CAN/LIN CAN/LIN Voltage reference Voltage reference Voltage reference Voltage reference Half bridge driver Half bridge driver Half bridge / isolated gate driver Half bridge / isolated gate driver QA QA QB QB QC QC QD QD QB QB QC QC QD QD QA QA QF QF QG QG QE QE QE QE QF QF QG QG QH QH Primary temperature sense Primary temperature sense Temperature sensor Temperature sensor Isolated gate driver Isolated gate driver Isolated gate driver Isolated gate driver PWM PWM PWM PWM Primary voltage sense Primary voltage sense Isolated amplifier Isolated amplifier To MCU To MCU 5V or others 5V or others To MCU To MCU Primary current sense Primary current sense Isolated amplifier / hall sensor Isolated amplifier / hall sensor 5V or others 5V or others 12V battery 12V battery Voltage sense Voltage sense To MCU To MCU Secondary current sensing bias supply Secondary current sensing bias supply Buck / LDO Buck / LDO QH QH Major auxiliary power supply Major auxiliary power supply Isolated DC/DC Isolated DC/DC HV battery HVbattery Redundant power supply Redundant power supply Non-isolated DC/DC Non-isolated DC/DC 12V battery 12Vbattery Reverse battery protection Reverse battery protection Reverse battery protection Reverse battery protection To non-iso driver To non-iso driver Shunt / magnetic Shunt / magnetic Shunt / magnetic Shunt / magnetic Secondary current sense Secondary current sense Amplifier / hall sensor Amplifier / hall sensor Minor auxiliary power supply Minor auxiliary power supply Non-isolated DC/DC Non-isolated DC/DC Circuit breaker Circuit breaker HSSC HSSC

Half-bridge driver

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The half-bridge gate driver integrates a high- and low-side gate driver and is capable of driving the gates of high- and low-side power transistors with signals of opposite polarity. It accepts high voltage common mode potential voltage applied aross the half-bridge DC bus.

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Power management (18)
Half-bridge drivers
  • UCC27311A-Q1Automotive 120V 4A half-bridge gate driver with 8V UVLO and enable
    Data sheet: PDF | HTML
  • UCC27301A-Q1Automotive 120V 4A half-bridge driver with 8V UVLO, enable and interlock
    Data sheet: PDF | HTML
  • UCC27282-Q1Automotive 3-A, 120-V half bridge driver with 5-V UVLO, interlock and enable
    Data sheet: PDF | HTML
  • UCC27284-Q1Automotive 3-A, 120-V half bridge gate driver with 5-V UVLO
    Data sheet: PDF | HTML
  • UCC27211A-Q1Automotive 4-A, 120-V half bridge gate driver with 8-V UVLO and negative voltage handling
    Data sheet: PDF | HTML
  • LM5109B-Q1Automotive 1-A, 100-V half bridge gate driver with 8-V UVLO and high noise immunity
    Data sheet: PDF | HTML
Low-side drivers
  • UCC27624-Q1Automotive 5A/5A dual-channel gate driver with 4V UVLO, 30V VDD and low propagation delay
    Data sheet: PDF | HTML
  • UCC27332-Q1Automotive 9-A/9-A single-channel gate driver with 20-V VDD and enable
    Data sheet: PDF | HTML
  • UCC27524A-Q1Automotive 5-A/5-A dual-channel gate driver with 5-V UVLO and negative input voltage handling
    Data sheet: PDF | HTML
  • UCC27524A1-Q1Automotive 5-A/5-A dual-channel gate driver with 5-V UVLO and negative input voltage handling
    Data sheet: PDF | HTML
  • UCC27531-Q1Automotive 2.5-A/5-A single-channel gate driver with 8-V UVLO, 35-V VDD, and split outputs
    Data sheet: PDF | HTML
  • UCC27511A-Q1Automotive 4-A/8-A single-channel gate driver with 5-V UVLO and split outputs
    Data sheet: PDF | HTML
Isolated gate drivers
  • UCC21550-Q1Automotive, 4A/6A, 5-kVRMS dual-channel isolated gate driver with DIS and DT pins for IGBT
    Data sheet: PDF | HTML
  • UCC21551-Q1Automotive, 4A/6A 5kVRMS dual-channel isolated gate driver with EN and DT pins for IGBT and SiC
    Data sheet: PDF | HTML
  • UCC21330-Q1Automotive, 3kVRMS 4A/6A two-channel gate driver with disable logic and programmable deadtime
    Data sheet: PDF | HTML
  • UCC21320-Q1Automotive 3.75kVrms, 4A/6A dual-channel isolated gate driver w/ programmable deadtime in DWK pkg
    Data sheet: PDF | HTML
  • UCC21710-Q1Automotive 5.7kVrms 10A single-channel isolated gate driver with overcurrent protection for IGBT/SiC
    Data sheet: PDF | HTML
  • UCC21750-Q1Automotive 5.7kVrms, ±10A single-channel isolated gate driver w/ DESAT & internal clamp for IGBT/SiC
    Data sheet: PDF | HTML
  • TIDA-01605Automotive Dual Channel SiC MOSFET Gate Driver Reference Design with Two Level Turn-off Protection
    Design guide: PDF Schematic: PDF
  • TIDM-BIDIR-400-12Bidirectional 400-V/12-V DC/DC Converter Reference Design
    Design guide: PDF Schematic: PDF

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