Datasheet > BM1R00178F

BM1R00178F

更新时间： 2024-10-18 11:08:23

品牌	Logo	应用领域
罗姆 - ROHM		开关控制器稳压器
页数	文件大小	规格书
25页	1854K
描述
BM1R00178F是用于二次测输出段的同步整流控制器。内置低功耗高精度分流稳压器，可减少待机功耗。分流稳压器由完全独立芯片构成，因此即使在High Side使用时，也可作为GND基准工作。连续模式工作时，可以不输入一次侧开关同步信号进行动作，有助于进一步节省空间。工作电源电压范围广，为2.7V～32V，可应对各种输出的应用。采用高耐压120V(Max)处理器，可直接监视漏极电压。

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BM1R00178F 数据手册

Datasheet

Built-in Low Consumption and High Accuracy Shunt Regulator

High Efficiency, Low Standby Power and

CCM Corresponding

Secondary Side Synchronous Rectification

Controller IC

BM1R00178F

General Description

Key Specifications

BM1R00178F is synchronous rectification controller to be

used in the secondary side output. It has a built-in low

consumption and high accuracy shunt regulator, which

reduces standby power. Since the shunt regulator is

made up of completely independent chips, it can operate

as a GND reference even when it is used with High Side.

At continuous conduction mode (CCM) operation, further

space saving can be realized when operating without the

input switching synchronizing signal of the primary side.

BM1R00178F also feature a wide operating supply

voltage of 2.7V to 32V for various output applications.

In addition, by adopting the high voltage 120V (Max)

process, it is possible to monitor the drain voltage directly.

 Supply Voltage

 Circuit Current (No Switching):

 DRAIN Monitor Pin Absolute Voltage: 120V(Max)

 Operating Temperature Range: -40°C to +105°C

2.7V to 32V

800µA(Typ)

Package

W(Typ) x D(Typ) x H(Max)

5.00mm x 6.20mm x 1.71mm

SOP8

Features

 Built-in Low Consumption and High Accuracy Shunt

Regulator, which Reduces Standby Power

 Synchronous Rectification FET Layout: High/Low

Side

 120V (Max) High Voltage Process DRAIN Monitor Pin

 Wide Supply Voltage Range of 2.7V to 32V

 Supports Drive Type: PWM, QR and LLC Controller

etc.

Applications

 No Input Required on the Primary-Side at CCM

 Built-in Over Voltage Protection for SH_IN and

SH_OUT Pin



AC/DC Output Power Conversion Applications:

Charger, Adapter, TV, Rice Cooker, Humidifier, Air

Conditioning, Vacuum Cleaner, etc.

 Built-in Thermal Shutdown Function

Typical Application Circuits

D₂

M₁

C_VCC

V_OUT

C_VCC

R_DRAIN1

DRAIN

VCC

R_DRAIN2

L_FB1

DRAIN

VCC

Primary

Controler

D₁

SR_GND

D₁

SH_IN

SR_GND

SH_IN

C_OUT

Primary

Controler

GATE

SH_OUT

SH_GND

C_OUT

GATE

SH_OUT

SH_GND

R_{MAX_TON}

R₁C₁

MAX_TON

GND

R₁

C₁

R_{MAX_TON}

GND

M₁

Figure 1. Flyback Application Circuit (Low side FET)

Figure 2. Flyback Application Circuit (High side FET)

〇Product structure : Silicon monolithic integrated circuit 〇This product has no designed protection against radioactive rays

www.rohm.com

TSZ02201-0F2F0A200340-1-2

06.Feb.2018 Rev.001

TSZ22111 • 14 • 001

1/22

12 3 4 5 6 7...25

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