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AC/DC 和 DC/DC 控制器 (外部 FET)

LM5122ZA

現行

具有多相的 3V 至 65V 寬輸入電壓、電流模式同步升壓控制器

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產品規格表

LM5122ZA

現行
產品規格表 立即訂購

產品詳細資料

Vin (min) (V) 3 Vin (max) (V) 65 Operating temperature range (°C) -40 to 125 Control mode current mode Topology Boost, Flyback, Forward, SEPIC Rating Catalog Vout (min) (V) 3 Vout (max) (V) 100 Features Enable, Frequency synchronization, Phase Interleaving, Synchronous Rectification, UVLO adjustable Iq (typ) (µA) 4000 Duty cycle (max) (%) 100
Vin (min) (V) 3 Vin (max) (V) 65 Operating temperature range (°C) -40 to 125 Control mode current mode Topology Boost, Flyback, Forward, SEPIC Rating Catalog Vout (min) (V) 3 Vout (max) (V) 100 Features Enable, Frequency synchronization, Phase Interleaving, Synchronous Rectification, UVLO adjustable Iq (typ) (µA) 4000 Duty cycle (max) (%) 100
HTSSOP (PWP) 24 49.92 mm² 7.8 x 6.4
  • Maximum Input Voltage: 65 V
  • Minimum Input Voltage: 3 V (4.5 V for Start-Up)
  • Output Voltage up to 100 V
  • Bypass (VOUT = VIN) Operation
  • 1.2-V Reference with ±1% Accuracy
  • Free-Run and Synchronizable Switching to 1 MHz
  • Peak-Current-Mode Control
  • Robust 3-A Integrated Gate Drivers
  • Adaptive Dead-Time Control
  • Optional Diode-Emulation Mode
  • Programmable Cycle-by-Cycle Current Limit
  • Hiccup-Mode Overload Protection
  • Programmable Line UVLO
  • Programmable Soft Start
  • Thermal Shutdown Protection
  • Low Shutdown Quiescent Current: 9 µA
  • Programmable Slope Compensation
  • Programmable Skip-Cycle Mode Reduces Standby Power
  • Allows External VCC Supply
  • Inductor DCR Current Sensing Capability
  • Multi-phase Capability
  • Thermally Enhanced 24-Pin HTSSOP
  • Maximum Input Voltage: 65 V
  • Minimum Input Voltage: 3 V (4.5 V for Start-Up)
  • Output Voltage up to 100 V
  • Bypass (VOUT = VIN) Operation
  • 1.2-V Reference with ±1% Accuracy
  • Free-Run and Synchronizable Switching to 1 MHz
  • Peak-Current-Mode Control
  • Robust 3-A Integrated Gate Drivers
  • Adaptive Dead-Time Control
  • Optional Diode-Emulation Mode
  • Programmable Cycle-by-Cycle Current Limit
  • Hiccup-Mode Overload Protection
  • Programmable Line UVLO
  • Programmable Soft Start
  • Thermal Shutdown Protection
  • Low Shutdown Quiescent Current: 9 µA
  • Programmable Slope Compensation
  • Programmable Skip-Cycle Mode Reduces Standby Power
  • Allows External VCC Supply
  • Inductor DCR Current Sensing Capability
  • Multi-phase Capability
  • Thermally Enhanced 24-Pin HTSSOP

The LM5122ZA is a multi-phase capable synchronous boost controller intended for high-efficiency synchronous boost regulator applications. The control method is based upon peak-current-mode control. Current-mode control provides inherent line feed forward, cycle-by-cycle current limiting, and ease of loop compensation.

The switching frequency is programmable up to 1 MHz. Higher efficiency is achieved by two robust N-channel MOSFET gate drivers with adaptive dead-time control. A user-selectable diode-emulation mode also enables discontinuous-mode operation for improved efficiency at light load conditions.

An internal charge pump allows 100% duty cycle for high-side synchronous switch (bypass operation). A 180° phase shifted clock output enables easy multi-phase interleaved configuration. Additional features include thermal shutdown, frequency synchronization, hiccup-mode current limit, and adjustable line undervoltage lockout.

The LM5122ZA is a multi-phase capable synchronous boost controller intended for high-efficiency synchronous boost regulator applications. The control method is based upon peak-current-mode control. Current-mode control provides inherent line feed forward, cycle-by-cycle current limiting, and ease of loop compensation.

The switching frequency is programmable up to 1 MHz. Higher efficiency is achieved by two robust N-channel MOSFET gate drivers with adaptive dead-time control. A user-selectable diode-emulation mode also enables discontinuous-mode operation for improved efficiency at light load conditions.

An internal charge pump allows 100% duty cycle for high-side synchronous switch (bypass operation). A 180° phase shifted clock output enables easy multi-phase interleaved configuration. Additional features include thermal shutdown, frequency synchronization, hiccup-mode current limit, and adjustable line undervoltage lockout.
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技術文件

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類型 標題 日期
* Data sheet LM5122ZA Wide-Input Synchronous Boost Controller With Multiple Phase Capability datasheet (Rev. A) PDF | HTML 2018年 11月 7日
White paper An overview of radiated EMI specifications for power supplies 2018年 6月 5日
White paper An overview of conducted EMI specifications for power supplies 2018年 2月 1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)。

模擬型號

LM5122 Dual-Phase TINA-TI Transient Reference Design

SNVMAV2.TSC (729 KB) - TINA-TI Reference Design
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模擬型號

LM5122 TINA-TI Transient Reference Design (Rev. B)

SNVM495B.TSC (188 KB) - TINA-TI Reference Design
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模擬型號

LM5122 TINA-TI Transient Spice Model (Rev. B)

SNVM494B.ZIP (52 KB) - TINA-TI Spice Model
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模擬型號

LM5122 Unencrypted PSpice Average Model Package (Rev. A)

SNVMBC0A.ZIP (78 KB) - PSpice Model
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模擬型號

LM5122-Q1 PSpice Model (Rev. B)

SNVM416B.ZIP (56 KB) - PSpice Model
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計算工具

LM5122-BOOST-CALC — LM5122 quick start calculator

LM5122 quick start calculator for boost topology
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支援產品和硬體

產品
AC/DC 和 DC/DC 控制器 (外部 FET)
LM5122 — 具多相功能的 3-65V 大範圍 Vin、電流模式同步升壓控制器 LM5122-Q1 — 具有多相的汽車、3-V 至 65-V 寬 VIN、電流模式同步升壓控制器 LM5122ZA — 具有多相的 3V 至 65V 寬輸入電壓、電流模式同步升壓控制器
硬體開發
開發板
LM5122EVM-1PH — LM5122EVM-1PH 寬輸入電壓同步升壓控制器評估模組 LM5122EVM-2PH — LM5122EVM-2PH 寬輸入電壓同步升壓控制器評估模組
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計算工具

SNVC196 — LM25122-Q1 Design Calculator

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)
LM25122-Q1 — 具有多相功能、符合 AEC-Q100 資格的 3-42-V 寬 VIN、同步升壓控制器 LM5122ZA — 具有多相的 3V 至 65V 寬輸入電壓、電流模式同步升壓控制器
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HTSSOP (PWP) 24 Ultra Librarian
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