ADuM3250

推荐用于新设计

Isolated, Half-Bridge Gate Driver with Adjustable Dead Time, 10A Output

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ADI公司所提供的资料均视为准确、可靠。但本公司不为用户在应用过程中侵犯任何专利权或第三方权利承担任何责任。技术指标的修改不再另行通知。本公司既没有含蓄的允许，也不允许借用ADI公司的专利或专利权的名义。本文出现的商标和注册商标所有权分别属于相应的公司。

概述

  • 10A peak current (< 1.1Ω RDSON_x)
  • Precise timing characteristics
    • 41ns max propagation delay over specified temperature range
    • 6.3ns maximum channel-to-channel matching
  • High common-mode transient immunity (CMTI): >210kV/μs
  • 4.5V to 28V driver side supply voltage
  • Multiple UVLO options for driver side supplies:
    • Grade A: 4.5V maximum
    • Grade B: 7.6V maximum
  • UVLO VDD1 positive going threshold: 2.25V maximum
  • Adjustable dead time control
  • CMOS input logic levels
  • High junction temperature operation: 150°C
  • Safety and regulatory approvals
    • UL1577
      • VISO = 3000VRMS for 1 minute
    • EN/IEC 62368-1
    • EN/IEC 61010-1
    • IEC 60747-17 (VDE 0884-17) (pending)
      • VIORM = 1200Vpeak
    • GB4943.1
  • 16-lead, RoHS compliant, SOIC_N package (4.0mm creepage)
ADuM3250
Isolated, Half-Bridge Gate Driver with Adjustable Dead Time, 10A Output
ADuM3250 Functional Block Diagram ADuM3250 Pin Configuration ADuM3250 Chip Illustration
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工具及仿真模型

LTspice

LTspice中提供以下器件型号：

  • ADUM3250A
  • ADUM3250B
  • ADUM3250C

IBIS 模型 1

LTspice

LTspice®是一款强大高效的免费仿真软件、原理图采集和波形观测器，为改善模拟电路的仿真提供增强功能和模型。

评估套件

eval board
schematic 1
schematic 2
schematic 3
EVAL-ADuM3250

Evaluating the ADuM3250, Isolated, Half-Bridge Gate Driver with Adjustable Dead Time, 10A Output

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特性和优点

  • Isolated dual-channel gate driver
    • 10A peak current
    • 4.5V UVLO on VDDA/VDDB sides (Grade A)
  • Output voltage: 4.5V to 28V
  • Input signals accessible by header pins or SMA connectors
  • Multiple test points for all critical signals
  • Test points compatible with ground spring probes

产品详情

The EVAL-ADuM3250EBZ evaluation board demonstrates the performance and capabilities of the ADuM3250 isolated half-bridge gate driver, which utilizes Analog Devices’ proprietary iCoupler® technology. By default, the EVAL-ADuM3250EBZ evaluation board includes the ADuM3250A model, which delivers a peak output current of 10A and features a 4.5V undervoltage lockout (UVLO) threshold on both VDDA and VDDB rails. Grade B (7.6V) model offers additional UVLO option that accommodate different switch requirements and ensure safe operation under varying supply conditions.

The ADuM3250 VDD1 supports input voltages from 2.5V to 5.5V, which makes it compatible with a wide range of logic families. Input signals VIA and VIB respectively control the output states of VOA and VOB, while the DISABLE input shuts off the device regardless of the channel inputs. In addition to providing basic overlap protection, the dead-time (DT) pin on the primary side allows an adjustable dead time between the VOA and VOB output transitions.

The ADuM3250 secondary side can sustain supply voltages up to 28V. This evaluation board simplifies the characterization of propagation delay, drive strength, and device logic, which makes it ideal for characterizing the ADuM3250 isolated gate driver family.

Full specifications on the ADuM3250 are available in the ADuM3250 data sheet available from Analog Devices, Inc., and must be consulted with this user guide when using the EVAL-ADuM3250EBZ evaluation board.
EVAL-ADuM3250
Evaluating the ADuM3250, Isolated, Half-Bridge Gate Driver with Adjustable Dead Time, 10A Output
EVAL-ADUM3250EBZ Top Angle Evaluation Board EVAL-ADUM3250EBZ Top Evaluation Board EVAL-ADUM3250EBZ Bottom Evaluation Board

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