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AC/DC & DC/DC controllers (external FET)

TPS43000

現行

多拓撲 (降壓、升壓、sepic)高頻 DC/DC 控制器

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產品規格表

TPS43000

現行
產品規格表 立即訂購

產品詳細資料

Vin (min) (V) 1.8 Vin (max) (V) 9 Iout (max) (A) 6 Operating temperature range (°C) -40 to 85 Topology Boost, Buck, Flyback, Forward, SEPIC Rating Catalog Vout (min) (V) 0.8 Vout (max) (V) 8 Iq (typ) (A) 0.001 Duty cycle (max) (%) 100
Vin (min) (V) 1.8 Vin (max) (V) 9 Iout (max) (A) 6 Operating temperature range (°C) -40 to 85 Topology Boost, Buck, Flyback, Forward, SEPIC Rating Catalog Vout (min) (V) 0.8 Vout (max) (V) 8 Iq (typ) (A) 0.001 Duty cycle (max) (%) 100
TSSOP (PW) 16 32 mm² 5 x 6.4
  • High-Frequency (2-MHz) Voltage Mode PWM Controller
  • 1.8-V to 9.0-V Input Voltage Range
  • 0.8-V to 8.0-V Output Voltage Range (Higher in Non-Synchronous Boost Topology)
  • High-Efficiency Buck, Boost, SEPIC or Flyback (Buck-Boost) Topology
  • Synchronous Rectification for High-Efficiency
  • Drives External MOSFETs for High-Current Applications
  • Synchronizable Fixed-Frequency PWM or Automatic Pulsed Frequency Modulation (PFM) Mode
  • Built-In Soft-Start
  • User Programmable Discontinuous or Continuous Conduction Mode
  • Selectable Pulse-by-Pulse Current Limiting or Hiccup Mode Protection
  • APPLICATIONS
    • Networking Equipment
    • Servers
    • Base Stations
    • Cellular Telephones
    • Satellite Telephones
    • GPS Devices
    • Digital Still and Handheld Cameras
    • Personal Digital Assistants (PDAs)
  • High-Frequency (2-MHz) Voltage Mode PWM Controller
  • 1.8-V to 9.0-V Input Voltage Range
  • 0.8-V to 8.0-V Output Voltage Range (Higher in Non-Synchronous Boost Topology)
  • High-Efficiency Buck, Boost, SEPIC or Flyback (Buck-Boost) Topology
  • Synchronous Rectification for High-Efficiency
  • Drives External MOSFETs for High-Current Applications
  • Synchronizable Fixed-Frequency PWM or Automatic Pulsed Frequency Modulation (PFM) Mode
  • Built-In Soft-Start
  • User Programmable Discontinuous or Continuous Conduction Mode
  • Selectable Pulse-by-Pulse Current Limiting or Hiccup Mode Protection
  • APPLICATIONS
    • Networking Equipment
    • Servers
    • Base Stations
    • Cellular Telephones
    • Satellite Telephones
    • GPS Devices
    • Digital Still and Handheld Cameras
    • Personal Digital Assistants (PDAs)

The TPS43000 is a high-frequency, voltage-mode, synchronous PWM controller that can be used in buck, boost, SEPIC, or flyback topologies. This highly flexible, full-featured controller is designed to drive a pair of external MOSFETs (one N-channel and one P-channel), enabling it for use with a wide range of output voltages and power levels. With an automatic PFM mode, a shutdown current of less than 1 uA, a sleep-mode current of less than 100 uA and a full operating current of less than 2 mA at 1 MHz, it is ideal for building highly efficient, dc-to-dc converters.

The TPS43000 operates over a wide input voltage range of 1.8 V to 9.0 V. Typical power sources are distributed power systems, two to four nickel or alkaline batteries, or one to two lithium-ion cells. It can be used to generate regulated output voltages from as low as 0.8 V to 8 V or higher. It operates either in a fixed-frequency mode, where the user programs the frequency (up to 2 MHz), or in an automatic PFM mode. In the automatic mode, the controller goes to sleep when the inductor current goes discontinuous, and wakes up when the output voltage has fallen by 2%. In this hysteretic mode of operation, very high efficiency can be maintained over a very wide range of load current. The device can also be synchronized to an external clock source using the dual function SYNC/SD input pin.

The TPS43000 features a selectable two-level current-limit circuit which senses the voltage drop across the energizing MOSFET. The user can select either pulse-by-pulse current limiting or hiccup mode overcurrent protection. The TPS43000 also features a low-power (LP) mode (which reduces gate charge losses in the N-channel MOSFET at high input/output voltages), undervoltage lockout, and soft-start. The TPS43000 is available in a 16-pin TSSOP (PW) package.

The TPS43000 is a high-frequency, voltage-mode, synchronous PWM controller that can be used in buck, boost, SEPIC, or flyback topologies. This highly flexible, full-featured controller is designed to drive a pair of external MOSFETs (one N-channel and one P-channel), enabling it for use with a wide range of output voltages and power levels. With an automatic PFM mode, a shutdown current of less than 1 uA, a sleep-mode current of less than 100 uA and a full operating current of less than 2 mA at 1 MHz, it is ideal for building highly efficient, dc-to-dc converters.

The TPS43000 operates over a wide input voltage range of 1.8 V to 9.0 V. Typical power sources are distributed power systems, two to four nickel or alkaline batteries, or one to two lithium-ion cells. It can be used to generate regulated output voltages from as low as 0.8 V to 8 V or higher. It operates either in a fixed-frequency mode, where the user programs the frequency (up to 2 MHz), or in an automatic PFM mode. In the automatic mode, the controller goes to sleep when the inductor current goes discontinuous, and wakes up when the output voltage has fallen by 2%. In this hysteretic mode of operation, very high efficiency can be maintained over a very wide range of load current. The device can also be synchronized to an external clock source using the dual function SYNC/SD input pin.

The TPS43000 features a selectable two-level current-limit circuit which senses the voltage drop across the energizing MOSFET. The user can select either pulse-by-pulse current limiting or hiccup mode overcurrent protection. The TPS43000 also features a low-power (LP) mode (which reduces gate charge losses in the N-channel MOSFET at high input/output voltages), undervoltage lockout, and soft-start. The TPS43000 is available in a 16-pin TSSOP (PW) package.
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類型 標題 日期
* Data sheet Multimode High-Frequency PWM Controller datasheet 2001年 5月 9日
Application note Basic Calculation of a Boost Converter's Power Stage (Rev. D) PDF | HTML 2022年 10月 28日
Selection guide Power Management Guide 2018 (Rev. R) 2018年 6月 25日
User guide 1-MHz, 3.3-V High Efficiency Synchronous Buck Converter 2002年 6月 14日
Application note 2.5V to 5V, 600kHz, High-Eff Synch Boost Converter With TPS43000 PWM Controller 2002年 4月 29日
More literature Seminar 900 Topic 6 - High Power Factor Prereg Using SEPIC 2001年 2月 15日

設計與開發

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開發板

TPS43000EVM-001 — 具 TPS43000 PWM 的 1 MHz、3.3V 高效同步降壓轉換器

The TPS43000EVM-001 is designed to help evaluate the TPS43000 full-featured controller. The TPS43000 is designed to drive a pair of external MOSFET's (N or P) and can be used with a wide range of output voltages and power levels. It can be widely used in networking equipment, servers, PDA's, (...)

使用指南: PDF
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計算工具

FLYBUCK-FLYBACK-DESIGN-CALC — Flybuck / Flyback Calculator

This tool helps a power supply engineer to select the right isolated DC-DC topology based on the specifications. Depending on the topology chosen, the calculator also recommends the right IC for the design.

支援產品和硬體

支援產品和硬體

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AC/DC & DC/DC converters (integrated FET)
LM25017 — 7.5-48V 大範圍 Vin，650mA 恒定導通時間同步降壓穩壓器 LM25018 — 7.5-48V 大範圍 VIN 300mA 固定導通時間同步降壓穩壓器 LM25019 — 7.5-48V 大範圍 Vin 100mA 固定導通時間同步降壓穩壓器 LM2577 — 3.5V 至 40-V、3-A 低零組件數升壓穩壓器 LM2585 — 4-V 至 40V、3-A 升壓大範圍 VIN 返馳穩壓器 LM2586 — 具頻率同步的 4-V 至 40-V、3-A 升壓寬 VIN 返馳穩壓器 LM2587 — 4V 至 40V、5A 升壓寬輸入返馳穩壓器 LM2588 — 具頻率同步的 4-V 至 40-V、5-A 升壓寬 VIN 返馳穩壓器 LM2621 — 1.2V 至 14V 輸入電壓、1A 負載電流、升壓 DC-DC LM2623 — 0.8V 至 14V 輸入電壓、2A 負載電流、升壓 DC-DC LM2735 — 520kHz/1.6MHz 節省空間的升壓和 SEPIC DC-DC 穩壓器 LM2735-Q1 — 520-kHz、1.6-MHz 空間效率升壓和 SEPIC DC/DC 穩壓器，符合 AEC-Q100 標準 LM34925 — 適用隔離 DC/DC 轉換器的 7.5-100V 大範圍 Vin 100mA 整合式二次側偏壓穩壓器 LM34926 — 適用隔離式 DC/DC 轉換器的 7.5-100V 大範圍 Vin 300mA 整合式二次側偏壓穩壓器 LM34927 — 適用隔離 DC/DC 轉換器的 7.5-100V 大範圍 Vin 600mA 整合式二次側偏壓穩壓器 LM5000 — 3.1-40V 大範圍 Vin、2A 電流模式非同步升壓穩壓器 LM5001 — 3.1-75V 大範圍 Vin、1A 電流模式非同步切換模式穩壓器 LM5001-Q1 — 3.1-V 至 75-V 寬 VIN、1-A 電流模式非同步切換模式穩壓器 LM5002 — 3.1-75V 大範圍 Vin、0.5A 電流模式升壓、返馳 Sepic 轉換器 LM5015 — 4.25-75V 單體雙開關順向 DC-DC 穩壓器 LM5017 — 7.5-100V 大範圍 VIN 600mA 恒定導通時間同步降壓穩壓器 LM5018 — 7.5-100V 大範圍 VIN 300mA 固定導通時間同步降壓穩壓器 LM5019 — 7.5-100V 大範圍 Vin 100mA 恒定導通時間同步降壓穩壓器 LM5160 — LM5160 寬輸入 65V、2A 同步降壓/Fly-Buck™ 轉換器 LM5160-Q1 — 廣泛輸入 65V、2A 同步降壓/Fly-Buck™ 轉換器 LM5160A — LM5160A 廣泛輸入 65V、2A 同步降壓 / Fly-Buck™ 轉換器 LM5161 — 寬輸入 4.5-V 至 100-V、1-A 同步降壓 / Fly-Buck 轉換器 LM78S40 — 1.5A 可調式升壓、降壓或反向穩壓器 TPS55340 — 5-A、40-V、大範圍 VIN 升壓、返馳和 SEPIC 轉換器 TPS55340-EP — 強化整合式、5-A、40-V 寬輸入範圍升壓/SEPIC/返馳 DC/DC 穩壓器 TPS55340-Q1 — 整合式 5-A 40-V 寬輸入範圍升壓/SEPIC/返馳 DC/DC 穩壓器，符合 AEC-Q100 標準 TPS61175 — 具緩啟動和可編程切換頻率的 3-A、40V 高壓升壓轉換器 TPS61175-Q1 — 具有緩啟動和可編程切換頻率的 3-A、40-V 高電壓升壓轉換器
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參考設計

PMP30284 — 微型 LED 驅動器參考設計

This reference design contains a unique LED Driver to be supplied out of a single or a dual cell lithium ion battery. The circuit in SEPIC topology accepts input voltages as low as 1.8V to 8.4V. The TPS43000 was chosen for handling  low input voltages. Current regulation is provided with a (...)
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電路圖: PDF
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