Datasheet

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

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TSZ02201-0F2F0A200010-1-2

24.Sep.2015.Rev.005

© 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

BM2PXX1 Series

●

General Description

The PWM type DC/DC converter (BM2PXX1) for

AC/DC provide an optimum system for all products

that include an electrical outlet.

BM2PXX1 supports both isolated and non-isolated

devices, enabling simpler design of various types of

low-power electrical converters.

BM2PXX1 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 BM2PXX1 includes

the switching MOSFET.

●Basic specifications



Operating Power Supply Voltage Range:

VCC 8.9V to 26.0V DRAIN：～650V



Operating Current: Normal Mode

BM2P011: 0.950mA (Typ.)

BM2P031: 0.775mA (Typ)

BM2P051: 0.600mA (Typ)

BM2P091: 0.500mA (Typ)

Burst Mode： 0.400mA (Typ.)



Oscillation Frequency:

65kHz (Typ.)



Operating Temperature:

- 40



MOSFET ON Resistance:

BM2P011:1.4Ω (Typ)

BM2P031:2.4Ω (Typ)

BM2P051:4.0Ω (Typ)

BM2P091:8.5Ω (Typ)

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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



BR pin AC input low voltage protection



BR pin AC input high voltage protection

●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

Figure 1. Application circuit

Product

MOSFET ON Resistor

BM2P011

1.4Ω

BM2P031

2.4Ω

BM2P051

4.0Ω

BM2P091

8.5Ω