Datasheet

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Product structure：Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays

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TSZ02201-0F2F0A200070-1-2

28.NOV.2012.Rev.003

© 2012 ROHM Co., Ltd. All rights reserved.

TSZ22111・14・001

www.rohm.com

AC/DC Drivers

PWM type DC/DC converter IC

Included 650V MOSFET

BM2PXX4 Series

●

General

The PWM type DC/DC converter (BM2PXX4) for

AC/DC provide an optimum system for all products

that include an electrical outlet.

BM2PXX4 supports both isolated and non-isolated

devices, enabling simpler design of various types of

low-power electrical converters.

BM2PXX4 built in a HV starter circuit that tolerates

650V, it contributes to low-power consumption.

With current detection resistors as external devices, a

higher degree of design freedom is achieved. Since

current mode control is utilized, current is restricted in

each cycle and excellent performance is demonstrated

in bandwidth and transient response.

The switching frequency is 65 kHz. At light load, the

switching frequency is reduced and high efficiency is

achieved.

A frequency hopping function is also on chip, which

contributes to low EMI.

We can design easily, because BM2PXX4 includes

the switching MOSFET.

●Basic specifications

Operating Power Supply Voltage Range:

VCC 8.9V to 26.0V DRAIN：～650V

Operating Current: Normal Mode

BM2P014 :0.950mA (Typ.)

BM2P034 :0.775mA(Typ)

BM2P054 : 0.600mA(Typ)

BM2P094 : 0.500mA(Typ)

Burst Mode： 0.400mA(Typ.)

Oscillation Frequency:

65kHz(Typ.)

Operating Temperature:

- 40deg. to +105deg.

MOSFET ON Resistance:

BM2P014:1.4Ω(Typ)

BM2P034:2.4Ω(Typ)

BM2P054:4.0Ω(Typ)

BM2P094:8.5Ω(Typ)

●

Features

PWM frequency : 65kHz

PWM current mode method

Burst operation when load is light

Frequency reduction function

Built-in 650V start circuit

Built-in 650V switching MOSFET

VCC pin under voltage protection

VCC pin overvoltage protection

SOURCE pin Open protection

SOURCE pin Short protection

SOURCE pin Leading-Edge-Blanking function

Per-cycle over current protection circuit

Soft start

Secondary Over current protection circuit

●Package

DIP7

9.20mm×6.35mm×4.30mm pitch 2.54mm

(Typ.)

(Typ.) (Typ.)

(TYP.)

●

Applications

AC adapters and household appliances (vacuum

cleaners, humidifiers, air cleaners, air conditioners, IH

cooking heaters, rice cookers, etc.)

●

Line Up

●Application circuit

AC

FUSE

+

-

Filter

Diode

Bridge

ERROR

AMP

Figure 1．Application circuit