BD83070GWL
節能優勢顯著的升降壓型DC/DC轉換器

“BD83070GWL”是針對小型電池驅動的電子設備,以“低功耗環保元件的標準”為目標開發而成的超低功耗升降壓型電源IC。產品內建低損耗的MOSFET,並配置低耗電消耗電流電路,在各種電池驅動設備(電動牙刷以及刮鬚刀等)工作時(負載電流200mA時),功率轉換效率高達97%,而且,消耗電流僅為2.8µA,在升降壓型電源IC領域中也達到極高水準。因此,相比普通產品效率大大提升的應用在待機時(負載電流100µA時),電池續航時間可延長1.53倍(ROHM調查資料),非常有助於延長小型電池驅動的各種電子設備的續航時間。

Data Sheet 購買 *
* 本產品是標準級的產品。
本產品不建議使用的車載設備。

Product Detail

 
料號 | BD83070GWL-E2
狀態 | 推薦品
封裝 | UCSP50L1C
單位數量 | 3000
最小包裝數量 | 3000
包裝形式 | Taping
RoHS | Yes

規格:

Grade

Standard

ch

1

Integrated FET / Controller

Integrated FET

Topology

Buck / Boost

Synchronous / Nonsynchronous

Synchronous

Vin1(Min.)[V]

2.0

Vin1(Max.)[V]

5.5

Vout1(Min.)[V]

2.5

Vout1(Max.)[V]

3.3

Iout1(Max.)[A]

1.0

SW frequency(Max.)[MHz]

1.65

Light Load mode

Yes

EN

Yes

PGOOD

No

Operating Temperature (Min.)[°C]

-40

Operating Temperature (Max.)[°C]

85

Package Size [mm]

1.2x1.6 (t=0.57)

功能:

  • Synchronous Buck-Boost DC/DC Converter
  • Automatic PFM/PWM Transition
  • Output Current: Up To 1A (VIN > 2.7V, VOUT = 3.3V)
  • Selectable Output Voltage: 2.5V or 3.3V
  • Efficiency: Up To 95%
  • UVLO Detection: 1.61V(Max)
  • Built-in Thermal, Over Voltage, And Over Current Protection

Supporting Information

 

製品概要

近年來,行動裝置、穿戴式裝置及IoT裝置等用電池驅動的電子裝置已迅速普及。為了提高產品的設計靈活度,並預留新功能所需的安裝空間,會要求這些產品上所搭載的元件功耗要降低到極限,以實現小型化並延長電池續航時間。

ROHM利用類比設計技術、電源系統製程以及垂直整合型生產體制優勢,致力於研發滿足市場需求的電源IC。其中,針對行動裝置也推出了升壓電源IC「BU33UV7NUX」和降壓電源IC「BD70522GUL」等高效率、超低功耗的電源IC,有助於延長以電池驅動應用的續航時間。此次,產品系列又新增了高性能的升降壓電源IC,將可滿足更多市場需求。

適用於行動裝置、具極佳節能性的電源IC產品系列

機能 產品型號 消耗電流 輸入電壓 輸出電壓 最大輸出電流 動作頻率 最高效率 封裝
升壓 BU33UV7NUX 7µA
(MODE=L)
13µA
(MODE=H)
0.6 ~ 4.5V 3.3V 50mA
(MODE=L)
500mA
(MODE=H)
800kHz 91%
@1mA
VSON010X3020
(3mm x 2mm)
降壓 BD70522GUL 0.18µA 2.5 ~ 5.5V 1.2, 1.5, 1.8, 2.0, 2.5, 2.8, 3.0, 3.2, 3.3V 500mA 1MHz 90%
@10µA
VCSP50L1C
(1.76mm x 1.56mm)
升降壓 BD83070GWL 2.8µA 2.0 ~ 5.5V 2.5, 3.3V 1000mA 1.5MHz 97%
@200mA
UCSP50L1C
(1.2mm x 1.6mm)

特點

1. 在廣域負載電流範圍內實現最高達97%的高轉換效率

透過內建採用功率系統製程0.13µm的BiCDMOS的低損耗MOSFET,在各種電池驅動裝置(電動牙刷及電動刮鬍刀等)運行(負載電流200mA)時,實現最高達97%的高功率轉換效率,在其他從輕載到最大負載範圍內(100μA~1A)也實現了高達90%以上的高轉換效率。
並且,採用ROHM獨有控制技術「X Ramp PWM控制」,能夠對輸入電壓進行升降壓無縫切換。

2. 在升降壓電源IC領域中,實現業界頂級水準的2.8µA超低消耗電流

新產品採用了兼具超低消耗電流與高速回應性能的低消耗電流電路,以及為降低損耗而對負載進行最佳切換控制。透過ROHM累積的低消耗電流類比技術優勢,在升降壓電源IC領域,實現了僅2.8µA的超低消耗電量。

應用範例

◇IoT裝置等配備鈕扣電池的電子裝置  ◇智慧型手機和平板電腦等配備鋰離子電池的電子裝置
◇玩具、電動牙刷等配備乾電池的電子裝置
不論何種應用類型和運作條件,有助於延長配備小型電池應用的運作時間。

名詞解釋

*1) DC/DC轉換器、降壓、升壓、升降壓
是電源IC的一種,具有將直流(DC)電壓轉換為直流電壓的功能。主要有用來降低電壓的降壓型,和用來升高電壓的升壓型兩種。“升降壓”可根據輸入電壓在升壓和降壓之間進行切換,但由於電路變得過長,因此在回應性和消耗電流方面存在著一些課題。

Evaluation
Board

 
    • Evaluation Board
    • BD83070GWL-EVK-001
    • The BD83070GWL converter is a power supply solution designed for battery powered devices. It can operate at pulse frequency modulation (PFM) to suppress loss and current consumption during light load which has 2.8μA quiescent current at no load. Capable to support up to 1A output on pulse width modulation (PWM) and provides high efficiency for heavy load.

  • User's Guide Buy

Design Resources

 

Documents

White Paper

  • Cutting-Edge Web Simulation Tool “ROHM Solution Simulator” Capable of Complete Circuit Verification of Power Devices and Driver ICs

User's Guide

  • Synchronous Buck-Boost DC/DC Converter BD83070GWL Evaluation Board

Technical Articles

Schematic Design & Verification

  • Calculation of Power Dissipation in Switching Circuit
  • Considering Input Filter to Reduce Conducted Emissions by DCDC Converter
  • Considering Polarity of Power Inductor to Reduce Radiated Emission of DC-DC converter
  • Method for Monitoring Switching Waveform
  • Power Supply Sequence Circuit with General Purpose Power Supply IC
  • Suppression Method of Switching Noise Using Linear Regulator and Low Pass Filter
  • PCB Layout Techniques of Buck Converter
  • Phase Compensation Design for Current Mode Buck Converter
  • Measurement Method for Phase Margin with Frequency Response Analyzer (FRA)
  • Usage of SPICE Macromodel for DC/DC
  • Snubber Circuit for Buck Converter IC
  • Efficiency of Buck Converter
  • Calculation of Power Loss (Synchronous)
  • Inductor Calculation for Buck converter IC
  • Considerations for Power Inductors Used for Buck Converters
  • Capacitor Calculation for Buck converter IC
  • The Important Points of Multi-layer Ceramic Capacitor Used in Buck Converter circuit
  • Resistor Value Table to set Output Voltage of Buck Converter IC
  • Importance of Probe Calibration When Measuring Power: Deskew
  • Impedance Characteristics of Bypass Capacitor

Thermal Design

  • What Is Thermal Design
  • Basics of Thermal Resistance and Heat Dissipation
  • Method for Calculating Junction Temperature from Transient Thermal Resistance Data
  • Two-Resistor Model for Thermal Simulation
  • Notes for Temperature Measurement Using Thermocouples
  • Notes for Temperature Measurement Using Forward Voltage of PN Junction
  • Thermal Resistance
  • Precautions When Measuring the Rear of the Package with a Thermocouple

Packaging & Quality

Package Information

  • Package Information

Manufacturing Data

  • Factory Information

Environmental Data

  • REACH SVHC Non-use Declaration