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DRV81545

現行

具有獨立過溫與過電流保護功能的 55V、2A 4 通道低壓側驅動器

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產品規格表

DRV81545

現行
產品規格表 立即訂購

產品詳細資料

Control interface Hardware (GPIO) Control mode PWM Vs (max) (V) 55 Vs (min) (V) 4.5 Vs ABS (max) (V) 60 Peak output current (A) 2 Operating temperature range (°C) -40 to 125 Rating Catalog Topology LSS
Control interface Hardware (GPIO) Control mode PWM Vs (max) (V) 55 Vs (min) (V) 4.5 Vs ABS (max) (V) 60 Peak output current (A) 2 Operating temperature range (°C) -40 to 125 Rating Catalog Topology LSS
HTSSOP (PWP) 20 41.6 mm² 6.5 x 6.4
  • Four-channel integrated low-side switches
    • 235mΩ RDS(ON) at 25°C
    • Output stage 55V operating maximum (60V absolute maximum)
    • Low minimum operating supply voltage range with stable RDS(ON) across voltage: 4.5V
    • Selectable current limit from 0.5A up to 3A per channel
    • Integrated catch diodes for flexible decay (external TVS/Zener) as an alternate current path on switch turn-off
  • Hardware INx interface for fast switching up to 250kHz
  • Diagnostic feedback
    • MCU fault interrupt signal (nFAULT)
  • Thermally enhanced surface mount package (PWP20)
  • Protection features
    • User settable current limit
    • Independent overtemperature, overcurrent protection for each switch
    • Configurable over-current cut-off delay (COD)
  • Four-channel integrated low-side switches
    • 235mΩ RDS(ON) at 25°C
    • Output stage 55V operating maximum (60V absolute maximum)
    • Low minimum operating supply voltage range with stable RDS(ON) across voltage: 4.5V
    • Selectable current limit from 0.5A up to 3A per channel
    • Integrated catch diodes for flexible decay (external TVS/Zener) as an alternate current path on switch turn-off
  • Hardware INx interface for fast switching up to 250kHz
  • Diagnostic feedback
    • MCU fault interrupt signal (nFAULT)
  • Thermally enhanced surface mount package (PWP20)
  • Protection features
    • User settable current limit
    • Independent overtemperature, overcurrent protection for each switch
    • Configurable over-current cut-off delay (COD)

The DRV81545 is a four-channel low-side switch driver that operates from 4.5V to 55V and supports a wide range of load currents. The device integrates four low-side switches with a RDS(ON) of 235mΩ, each with a freewheeling diode to the VCLAMP pin. This feature allows the user to either recirculate current or connect an external TVS for inductive load turn-off.

The device can be controlled through a hardware GPIO interface. Each channel features individual overtemperature protection, and an analog current limit adjustable with an external resistor on the ILIM pin. There is an optional cut-off delay (COD) configuration which limits the duration of a current-limiting condition on the respective channel, helping to prevent damage to the device or the load. Faults are indicated on a fault output pin (nFAULT).

The DRV81545 is a four-channel low-side switch driver that operates from 4.5V to 55V and supports a wide range of load currents. The device integrates four low-side switches with a RDS(ON) of 235mΩ, each with a freewheeling diode to the VCLAMP pin. This feature allows the user to either recirculate current or connect an external TVS for inductive load turn-off.

The device can be controlled through a hardware GPIO interface. Each channel features individual overtemperature protection, and an analog current limit adjustable with an external resistor on the ILIM pin. There is an optional cut-off delay (COD) configuration which limits the duration of a current-limiting condition on the respective channel, helping to prevent damage to the device or the load. Faults are indicated on a fault output pin (nFAULT).
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類型 標題 日期
* Data sheet DRV81545 : 55V Four-Channel Low-side Driver With Integrated Protection Features datasheet (Rev. A) PDF | HTML 2025年 12月 9日
Certificate DRV81545EVM EU Declaration of Conformity (DoC) 2025年 9月 26日

設計與開發

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開發板

DRV81545EVM — DRV81545 評估模組

DRV81x4x 評估模組 (EVM) 可用於評估 DRV81545、DRV81646 和 DRV81646DGQ 裝置。EVM 已進行程式設計，可立即使用並開始驅動負載。為了簡化控制和配置，EVM 附帶圖形使用者介面 (GUI) 應用程式。
使用指南: PDF | HTML
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韌體

DRV81X4X-EVM-FIRMWARE — DRV81x4x-EVM FIRMWARE

DRV81x4x-EVM FIRMWARE
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支援產品和硬體

產品
電磁線圈驅動器
DRV81545 — 具有獨立過溫與過電流保護功能的 55V、2A 4 通道低壓側驅動器 DRV81646 — 具有 H/W、SPI 和可配置電壓轉換速率和切斷持續時間的 65V、4A 4 通道低壓側驅動器
硬體開發
開發板
DRV81545EVM — DRV81545 評估模組 DRV81646EVM — DRV81646 評估模組 DRV81646DGQEVM — DRV81646 評估模組（DGQ 封裝）
下載選項
開發模組 (EVM) 的 GUI

DRV81X4X-EVM-GUI — DRV81X4X-GUI

DRV81X4X-GUI
支援產品和硬體

支援產品和硬體

產品
電磁線圈驅動器
DRV81545 — 具有獨立過溫與過電流保護功能的 55V、2A 4 通道低壓側驅動器 DRV81646 — 具有 H/W、SPI 和可配置電壓轉換速率和切斷持續時間的 65V、4A 4 通道低壓側驅動器
硬體開發
開發板
DRV81545EVM — DRV81545 評估模組 DRV81646EVM — DRV81646 評估模組 DRV81646DGQEVM — DRV81646 評估模組（DGQ 封裝）
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