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DC/DC 控制器

LM5156H

現行

具備雙隨機展頻的 2.2-MHz 大範圍 VIN 非同步升壓、返馳和 SEPIC 控制器

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產品規格表

LM5156H

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Topology Boost, Flyback, SEPIC Vin (max) (V) 60 Vin (min) (V) 1.5 Vout (max) (V) 300 Vout (min) (V) 1.5 Control mode current mode Features Adjustable current limit, Enable, Frequency synchronization, Light-load efficiency, Nonsynchronous rectification, Power good, Spread Spectrum, UVLO adjustable EMI features Frequency Dithering, Spread Spectrum Duty cycle (max) (%) 93 Iq (typ) (A) 0.00049 TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 150
Rating Catalog Topology Boost, Flyback, SEPIC Vin (max) (V) 60 Vin (min) (V) 1.5 Vout (max) (V) 300 Vout (min) (V) 1.5 Control mode current mode Features Adjustable current limit, Enable, Frequency synchronization, Light-load efficiency, Nonsynchronous rectification, Power good, Spread Spectrum, UVLO adjustable EMI features Frequency Dithering, Spread Spectrum Duty cycle (max) (%) 93 Iq (typ) (A) 0.00049 TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 150
HTSSOP (PWP) 14 32 mm² (5 mm × 6.4 mm)
  • Functional Safety-Capable
    • Documentation available to aid functional safety system design
  • Suited for wide input operating range battery applications
    • 3.5-V to 60-V Operating range (65-V abs max)
    • 2.97-V to 16-V when BIAS = VCC
    • Minimum boost supply voltage 1.5 V when BIAS ≥ 3.5 V
    • Input transient protection up to 65 V
    • Minimized battery drain
      • Low shutdown current ( IQ ≤ 2.6 µA )
      • Low operating current ( IQ ≤ 490 µA )
  • Small solution size and low cost
    • Maximum switching frequency of 2.2 MHz
    • Integrated error amplifier allows primary-side regulation without optocoupler (flyback)
  • EMI mitigation
    • Selectable dual random spread spectrum
  • Higher efficiency with low-power dissipation
    • 100-mV ±7% accurate current limit threshold
    • Strong 1.5-A peak standard MOSFET driver
    • Supports external VCC supply
  • Avoid AM band interference and crosstalk
    • Optional clock synchronization
    • Dynamically programmable switching frequency from 100 kHz to 2.2 MHz
  • Integrated protection features
    • Constant peak current limiting over input voltage
    • Optional hiccup mode overload protection (see the Device Comparison Table)
    • Programmable line UVLO
    • OVP protection
    • Thermal shutdown
  • Accurate ±1% accuracy feedback reference
  • Programmable extra slope compensation
  • Adjustable soft start
  • PGOOD indicator
  • 14-Pin HTSSOP package (5.0 mm × 4.4 mm)
  • Create a custom design using the LM5156xH with the WEBENCH power designer
  • Functional Safety-Capable
    • Documentation available to aid functional safety system design
  • Suited for wide input operating range battery applications
    • 3.5-V to 60-V Operating range (65-V abs max)
    • 2.97-V to 16-V when BIAS = VCC
    • Minimum boost supply voltage 1.5 V when BIAS ≥ 3.5 V
    • Input transient protection up to 65 V
    • Minimized battery drain
      • Low shutdown current ( IQ ≤ 2.6 µA )
      • Low operating current ( IQ ≤ 490 µA )
  • Small solution size and low cost
    • Maximum switching frequency of 2.2 MHz
    • Integrated error amplifier allows primary-side regulation without optocoupler (flyback)
  • EMI mitigation
    • Selectable dual random spread spectrum
  • Higher efficiency with low-power dissipation
    • 100-mV ±7% accurate current limit threshold
    • Strong 1.5-A peak standard MOSFET driver
    • Supports external VCC supply
  • Avoid AM band interference and crosstalk
    • Optional clock synchronization
    • Dynamically programmable switching frequency from 100 kHz to 2.2 MHz
  • Integrated protection features
    • Constant peak current limiting over input voltage
    • Optional hiccup mode overload protection (see the Device Comparison Table)
    • Programmable line UVLO
    • OVP protection
    • Thermal shutdown
  • Accurate ±1% accuracy feedback reference
  • Programmable extra slope compensation
  • Adjustable soft start
  • PGOOD indicator
  • 14-Pin HTSSOP package (5.0 mm × 4.4 mm)
  • Create a custom design using the LM5156xH with the WEBENCH power designer

The LM5156xH (LM5156H and LM51561H) device is a wide input range, non-synchronous boost controller that uses peak current mode control. The device can be used in boost, SEPIC, and flyback topologies.

The device can start up from a 1-cell battery with a minimum of 2.97 V if the BIAS pin is connected to the VCC pin. It can operate with the input supply voltage as low as 1.5 V if the BIAS pin is greater than 3.5 V.

The LM5156xH (LM5156H and LM51561H) device is a wide input range, non-synchronous boost controller that uses peak current mode control. The device can be used in boost, SEPIC, and flyback topologies.

The device can start up from a 1-cell battery with a minimum of 2.97 V if the BIAS pin is connected to the VCC pin. It can operate with the input supply voltage as low as 1.5 V if the BIAS pin is greater than 3.5 V.
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LM51561H 現行 具備展頻和 hiccup 的 2.2-MHz 大範圍 VIN 非同步升壓、返馳和 SEPIC 控制器 This product provides additional hiccup protection mode.
功能相同，但針腳輸出與所比較的裝置不同。
LM5156 現行 具備雙隨機展頻的 2.2-MHz 大範圍 VIN 非同步升壓、返馳和 SEPIC 控制器 Functionally equivalent device in a WSON package
LM5155 現行 2.2-MHz 大範圍 VIN、1.5-A MOSFET 驅動器、非同步升壓控制器 This product has up to 45-V input operating voltage, WSON package, and does not include spread spectrum.

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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 LM5156xH 2.2-MHz Wide VIN 65-V Non-synchronous Boost/SEPIC/Flyback Controller with 150°C Maximum Junction Temperature datasheet PDF | HTML 2020/9/23
應用說明 How to Design a Boost Converter Using the LM5156 (Rev. A) PDF | HTML 2022/11/14
應用說明 EMI Reduction Technique, Dual Random Spread Spectrum (Rev. A) 2022/10/19
功能安全資訊 LM34966-Q1, LM5156x-Q1 Functional Safety, FIT Rate, Failure Mode Distribution (Rev. C) PDF | HTML 2021/4/28
證書 LM5156HEVM-FLY EU Declaration of Conformity (DoC) 2020/8/31

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

LM5156HEVM-FLY — LM5156H 返馳式控制器評估模組

LM5156HEVM-FLY 評估模組展示了 LM51561（TSSOP 封裝）作為廣泛輸入非同步返馳控制器的功能和性能。標準配置的設計可在 18 V 至 36 V 輸入，在 250 kHz 下切換時，在 4 A 時提供 5 V 的穩壓輸出。此評估模組旨在簡化配置，讓使用者能夠在同一模組上評估多種不同應用。
使用指南: PDF | HTML
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模擬型號

Unencrypted LM5156-Q1 PSpice Transient Model Package (Rev. H)

SNVMBV9H.ZIP (205 KB) - PSpice 模型
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模擬型號

Unencrypted LM5156x-Q1 PSpice Average Model (Rev. A)

SNVMC69A.ZIP (43 KB) - PSpice 模型
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計算工具

SNVC224 — LM5155/56 Boost Controller Quick Start Calculator

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計算工具

SNVC240 — LM5155/56 Flyback Controller Quick Start Calculator

LM5155/56 Flyback Controller Quick Start Calculator
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計算工具

SNVR481 — LM5155/56 SEPIC Controller Quick Start Calculator

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參考設計

PMP23649 — 40W, 48V-to-1kV nonisolated DCM flyback converter reference design

This reference design is a high-conversion ratio flyback converter that steps up a 48V input to a regulated 960V output. The single stage solution acheives less than 0.5% output ripple with minimal output capacitance used. LM5156 is used to implement the non-synchronous current-mode control (...)
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HTSSOP (PWP) 14 Ultra Librarian
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