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AC/DC 和 DC/DC 控制器 (外部 FET)

LM5122-Q1

現行

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

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產品規格表

現在提供此產品的更新版本

open-in-new 比較替代產品
功能相同，但引腳輸出與所比較的裝置不同
LM5123-Q1 現行 2.2MHz 大範圍 VIN 低 IQ 同步升壓控制器 LM5123-Q1 has updated/better specs except lower voltage
LM51231-Q1 現行 具有輸出電壓追蹤功能的 2.2-MHz 大範圍 VIN、同步升壓控制器 Updated, better specs (except lower voltage)

LM5122-Q1

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 Automotive 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 Automotive 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) 20 41.6 mm² 6.5 x 6.4
  • AEC-Q100 Qualified with the following results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C6
  • 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 20-Pin HTSSOP
  • Create a Custom Design Using the LM5122 With the WEBENCH® Power Designer
  • AEC-Q100 Qualified with the following results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C6
  • 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 20-Pin HTSSOP
  • Create a Custom Design Using the LM5122 With the WEBENCH® Power Designer

The LM5122 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 LM5122 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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類型 標題 日期
* Data sheet LM5122-Q1 Wide-Input Synchronous Boost Controller With Multiple Phase Capability datasheet PDF | HTML 2017年 6月 9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
Application brief Improve DC/DC Regulator EMI for Free with Optimized Power Stage Layout 2017年 11月 13日
Analog Design Journal Designing the front-end DC/DC conversion stage to withstand automotive transient 2017年 1月 18日
EVM User's guide LM5122EVM-1PH User's Guide 2013年 4月 22日
EVM User's guide LM5122EVM-2PH User's Guide 2013年 4月 22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

LM5122EVM-1PH — LM5122EVM-1PH 寬輸入電壓同步升壓控制器評估模組

The LM5122EVM-1PH evaluation module (EVM) provides the design engineer with a fully functional synchronous boost converter to evaluate the Texas Instruments LM5122 synchronous boost controller IC. The EVM provides 24V output at up to 4.5A current from a 9V to 20V input. The EVM is designed to (...)
使用指南: PDF
TI.com 無法提供
開發板

LM5122EVM-2PH — LM5122EVM-2PH 寬輸入電壓同步升壓控制器評估模組

The LM5122EVM-2PH evaluation module (EVM) provides the design engineer with a fully functional dual phase synchronous boost converter to evaluate the Texas Instruments LM5122 synchronous boost controller IC. The EVM provides 28V output at up to 7A current from a 9V to 20V input. The EVM is (...)
使用指南: PDF
TI.com 無法提供
開發板

TPS92662AEVM6-104 — TPS92662A-Q1 六通道矩陣評估模組

TPS92662AEVM6-104 包含 66 個獨立控制的 LED，配置爲六通道應用程式。此評估模組顯示 TPS92662A-Q1 LED 矩陣管理裝置的多功能性和可配置性。使用搭配的控制 PCB、6CHAUTOECU-899 和 TPS92662AEVM 軟體套件，可評估完整控制的動態前方照明系統。
要求
開發板

TPS92662EVM6-900 — TPS92662-Q1 六通道矩陣評估模組

The TPS92662EVM6-900 consists of 66 invidividually controllable LEDs configured into a six channel application. This evaluation module shows the versatility and configurability of the TPS92662-Q1 LED Matrix Manager Device. Using the companion control PCB, 6CHAUTOECU-899, and the TPS92662EVM (...)
要求
模擬型號

LM5122 Dual-Phase TINA-TI Transient Reference Design

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

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

SNVM495B.TSC (188 KB) - TINA-TI Reference Design
下載
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-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
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)
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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參考設計

TIDA-01520 — 具有汽車頭燈適用的適應性預升壓控制的 50W 雙級 LED 驅動器參考設計

The TIDA-01520 dual-stage reference design drives two strings of LEDs for automotive headlight applications while automatically adapting the pre-boost voltage without the need of a microcontroller (MCU) which saves space and cost. Additionally, the design’s adaptive, pre-boost control (...)
Design guide: PDF
電路圖: PDF
參考設計

PMP7837 — 適用於 450W 車用音訊放大器的電源參考設計

The PMP7837 is a 4-phase synchronous boost converter that can take a 6-17V input and put out 24V at 450W. It is used for powering up to eight 50W automotive trunk amplifiers. The 4-phase synchronous design with 450kHz switching frequency per phase results in a compact and efficient circuit well (...)
Test report: PDF
電路圖: PDF
參考設計

PMP10749 — 適用於車載資訊娛樂系統的 100W 系統級電源參考設計

PMP10749 is a 100-W system-level SMPS design for a higher-power automotive infotainment system. The design has protections, such as load dump through TVS (ISO pulse testing), as well as reverse voltage (innovative smart diode with very low Iq) protection. Furthermore, all the controllers (boost and (...)
Test report: PDF
電路圖: PDF
參考設計

TIDA-00748 — 適用於汽車應用的 60W 同步升壓 LED 驅動器參考設計

TIDA-00748 is a 60W Synchronous Boost Design for automotive LED application utilizing the Synchronous Boost Converter LM5122-Q1.  This design applies to automotive lighting for exterior lighting such as headlights and taillights and also interior LED lighting systems. The design accepts an (...)
Test report: PDF
電路圖: PDF
參考設計

PMP9403 — 192W 雙相同步升壓轉換器參考設計

PMP9403 is a high-efficiency dual-phase synchronous boost converter using the LM5122 controller ICs. The design accepts an input voltage of 9Vin to 15Vin (12Vin Nominal) and provides an output of 48Vout capable of supplying 4A of continuous current to the load.
Test report: PDF
電路圖: PDF
參考設計

TIDA-00223 — 車用同軸音訊 I2S D 類音訊放大器參考設計

This reference design is an I²S/TDM-based, low-cost, easy-to-use alternative to fiber optics/analog copper wire for connecting an automotive (sound) control panel to an output stage/power amplifier. Supporting I²S as well as TDM, it is capable of transmitting digital audio signal to 16 (...)
Design guide: PDF
電路圖: PDF
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