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LM51772

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55V wide VIN four-switch buck-boost controller with I2C interface

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LM51772

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產品規格表 立即訂購

產品詳細資料

Vin (min) (V) 3.5 Vin (max) (V) 55 Operating temperature range (°C) -40 to 125 Topology Buck-Boost Rating Catalog Vout (min) (V) 3.3 Vout (max) (V) 55 Iq (typ) (A) 0.00006 Duty cycle (max) (%) 100
Vin (min) (V) 3.5 Vin (max) (V) 55 Operating temperature range (°C) -40 to 125 Topology Buck-Boost Rating Catalog Vout (min) (V) 3.3 Vout (max) (V) 55 Iq (typ) (A) 0.00006 Duty cycle (max) (%) 100
VQFN (RHA) 40 36 mm² 6 x 6
  • Input range from 3.5V to 55V
  • Output voltage 3.3V to 55V
  • Dynamical Vo programming via I2C from 3.3V
    • up to 48V in 20mV monotonous steps
    • up to 24V in 10mV monotonous steps
  • Peak current regulation scheme
  • Small voltage transition ripple over all operating modes
  • Dynamic output voltage tracking (digital PWM tracking input, analog tracking input)
    • Via I2C interface programming
  • Shut down quiescent current 3µA
  • Operating quiescent current 60µA
  • DRV pin for external FET control
  • Operation mode selection for high efficiency in light load and high load conditions:
    • Power save mode (burst/µSleep)
    • Automatic/programmable conduction mode
  • Integrated high voltage supply LDO
  • Axillary high voltage LDO/reference
  • Integrated full-bridge gate drive
    • 2A peak current capability
    • Bootstrap over and under-voltage protection
    • Integrated boot-strap diode
  • Fixed frequency independent from operating mode (boost, buck-boost, buck)
    • Forced PWM mode selectable
    • Switching frequency from 100kHz to 2.2MHz
    • External clock synchronization and clock output
  • Spread spectrum operation selectable
  • High-side output current sensor
    • Programmable from 1A to 7A in 50mA steps
    • ISET pin selectable
  • I2C Interface readout of (device configuration, enhanced monitoring features, programmable thermal warning)

  • Create a custom design using the LM51772 with the WEBENCH® Power Designer
  • Input range from 3.5V to 55V
  • Output voltage 3.3V to 55V
  • Dynamical Vo programming via I2C from 3.3V
    • up to 48V in 20mV monotonous steps
    • up to 24V in 10mV monotonous steps
  • Peak current regulation scheme
  • Small voltage transition ripple over all operating modes
  • Dynamic output voltage tracking (digital PWM tracking input, analog tracking input)
    • Via I2C interface programming
  • Shut down quiescent current 3µA
  • Operating quiescent current 60µA
  • DRV pin for external FET control
  • Operation mode selection for high efficiency in light load and high load conditions:
    • Power save mode (burst/µSleep)
    • Automatic/programmable conduction mode
  • Integrated high voltage supply LDO
  • Axillary high voltage LDO/reference
  • Integrated full-bridge gate drive
    • 2A peak current capability
    • Bootstrap over and under-voltage protection
    • Integrated boot-strap diode
  • Fixed frequency independent from operating mode (boost, buck-boost, buck)
    • Forced PWM mode selectable
    • Switching frequency from 100kHz to 2.2MHz
    • External clock synchronization and clock output
  • Spread spectrum operation selectable
  • High-side output current sensor
    • Programmable from 1A to 7A in 50mA steps
    • ISET pin selectable
  • I2C Interface readout of (device configuration, enhanced monitoring features, programmable thermal warning)

  • Create a custom design using the LM51772 with the WEBENCH® Power Designer

The LM51772 is a four switch Buck-Boost controller. It provides a regulated output voltage if the input voltage is higher, equal or lower than the adjusted output voltage. In power save mode the device supports very high efficiency over the complete operation range of the output. The LM51772 runs at a fixed switching frequency, which can be set via the RT/SYNC pin. The switching frequency remains constant during buck, boost and buck-boost operation in forced PWM. The external compensation pin allows very fast transient responds for different applications.(Continued)

The LM51772 is a four switch Buck-Boost controller. It provides a regulated output voltage if the input voltage is higher, equal or lower than the adjusted output voltage. In power save mode the device supports very high efficiency over the complete operation range of the output. The LM51772 runs at a fixed switching frequency, which can be set via the RT/SYNC pin. The switching frequency remains constant during buck, boost and buck-boost operation in forced PWM. The external compensation pin allows very fast transient responds for different applications.(Continued)
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類型 標題 日期
* Data sheet LM51772 55V 4-Switch Buck-Boost Controller with I2 C interface datasheet (Rev. A) PDF | HTML 2024年 3月 21日
Application note Layout Optimization of 4-Switch Buck-Boost Converters PDF | HTML 2023年 9月 5日

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

LM51772EVM-HP — LM51772 評估模組

LM51772EVM-HP 展示使用 LM51772 wide-VIN 降壓升壓控制器的靈活高功率降壓升壓設計。評估模組設定為在 9V 至 48V 輸入電壓範圍內運作，並且提供最高 5A 負載電流的穩壓 20V 輸出。

使用指南: PDF | HTML
TI.com 無法提供
開發板

USB2ANY — USB2ANY 介面轉接器

The USB2ANY interface adapter is a tool intended to allow a computer to control an evaluation module (EVM) via a USB connection. USB2ANY supports multiple popular protocol interfaces and provides 3.3-V and 5-V power supplies.

使用指南: PDF
TI.com 無法提供
開發模組 (EVM) 的 GUI

LM51772-CONFIGURATON-GUI — LM51772 GUI for configuration via I2C

Graphical User Interface (GUI) to configure the LM51772 via I2C. You can use the Launch button for using the GUI online via a browser or one of the download files to operate the GUI offline
支援產品和硬體

支援產品和硬體

產品
AC/DC 和 DC/DC 控制器 (外部 FET)
LM51772 — 55V wide VIN four-switch buck-boost controller with I2C interface
硬體開發
開發板
LM51772EVM-HP — LM51772 評估模組
啟動 下載選項
計算工具

LM51772-QUICKSTART-CALC — LM51772 BuckBoost Quickstart Calculator Tool

LM51772 BuckBoost Quickstart Calculator Tool. This standalone tool facilitates and assists the power supply engineer with the design of a DC/DC buck-boost converter based on the LM51772.
支援產品和硬體

支援產品和硬體

產品
AC/DC 和 DC/DC 控制器 (外部 FET)
LM51772 — 55V wide VIN four-switch buck-boost controller with I2C interface
硬體開發
開發板
LM51772EVM-HP — LM51772 評估模組
下載
封裝 引腳 下載
VQFN (RHA) 40 檢視選項
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