Rohm Bm2pda1y-z Evaluation Board User Guide (+ PDF)

ROHM BM2PDA1Y-Z Evaluation Board

<High Voltage Safety Precaution>

Please note that this document covers only the BM2PDA1Y-Z evaluation board (BM2PDA1Y-EVK-001) and its functions. For additional information, please refer to the datasheet.

To ensure safe operation, please carefully read all precautions before
handling the evaluation board

Depending on the configuration of the board and voltages used,
Potentially lethal voltages may be generated.
Therefore, please make sure to read and observe all safety precautions described in the red box below.

Before Use

Verify that the parts/components are not damaged or missing (i.e. due to the drops).
Check that there are no conductive foreign objects on the board.
Be careful when performing soldering on the module and/or evaluation board to ensure that solder splash does not occur.
Check that there is no condensation or water droplets on the circuit board.
During Use
Be careful to not allow conductive objects to come into contact with the board.
Brief accidental contact or even bringing your hand close board may result in discharge and lead to severe injury or death.
Therefore, DO NOT touch the board with your bare hands or bring them too close to the board.
In addition, as mentioned above please exercise extreme caution when using conductive tools such as tweezers and screwdrivers.
If used under conditions beyond its rated voltage, it may cause defects such as short-circuit or, depending on the circumstances, explosion or other permanent damages.
Be sure to wear insulated gloves when handling is required during operation.
After Use
The ROHM Evaluation Board contains the circuits which store the high voltage. Since it stores the charges even after the connected power circuits are cut, please discharge the electricity after using it, and please deal with it after confirming such electric discharge.
Protect against electric shocks by wearing insulated gloves when handling.

This evaluation board is intended for use only in research and development facilities and should by handled only by qualified personnel familiar with all safety and operating procedures.
We recommend carrying out operation in a safe environment that includes the use of high voltage signage at all entrances, safety interlocks, and protective glasses.

AC/DC Converter

Non-Isolated Buck Convertor 24 V 8.4 W Output BM2PDA1Y-Z Evaluation Board

BM2PDA1Y-EVK-001

Feature

(Adjustable Output Voltage with External Resistor
Frequency 65 kHz
Internal Start up Circuit 730 V(peak)
Internal Super Junction FET 730 V(peak) (Ron= 1.2 0)
Internal Current Sense Resistor (Detection Current 0.93 A)
Contributes to Low EMI by Internal Hopping Function

Specification

Table 1. Input Range

Parameter	Min	Typ	Max	Units	Conditions
Input Voltage Range	90	230	264	Vac
Input Frequency Range	47	50 / 60	63	Hz
Operating Temperature	-10	25	+65	°C

Table 2. Evaluation board specification

These are representative values and not a guarantee of the characteristics, unless stated otherwise use VIN = 230 Vac, IOUT = 0.35 A, Ta= 25 ° C.

Parameter	Min	Typ	Max	Units	Conditions
Output Voltage	22.08	24.0	25.2	V
Output Maximum Power	–	–	8.4	W
Output Current Range (Note 1)	0	–	0.35	A
No Load Power Consumption	–	100	–	mW	I_OUT = 0 A
Efficiency	–	89	–	%
Output Ripple Voltage (Note 2)	–	–	100	mVpp

(Note 1) Adjust the operating time so that surface temperature of no component exceeds 105 ° C
(Note 2) Do not consider spike nois

Operation Procedure

Operation equipment
(1) AC power supply 90 Vac to 264 Vac, 15 W or more
(2) Electronic Load capacity 0.35A
(3) Multimeter
Connection Instruments
(1) Tum off each power supply and connect the measuring instrument as shown below.
(2) Turn on the power supply setting between 90 Vac to 264 Vac
(3) Tum on the electrical load setting between Oto 0.35 A.
(4) Connect the multimeter directly to the output and check the voltage by sensing.

Circuit

VIN = 90 to 264 Vac, VOUT = 24 V

BOM List

Item		Specifications	Parts name	Manufacture
Capacitor	Cl	12 µF, 450 V	UCY2W120MP01TD	NICHICON
	C2	12 µF, 450 V	UCY2W120MP01TD	NICHICON
	C3	–	NON MOUNTED	–
	C4	2.2 µF, 50 V	UMK316B7225KL-T	TAIYO YUDEN
	cs	1000 pF, 100 V	HMK107B7102KA-T	TAIYO YUDEN
	C6	1000 pF, 100 V	HMK107B7102KA-T	TAIYO YUDEN
	cs	–	NON MOUNTED	–
	C9	–	NON MOUNTED	–
	Cl0	–	NON MOUNTED	–
	Cll	–	NON MOUNTED	–
	C12	470 µF, 35 V	UPW1V471MPD	NICHICON
Connector	CNl	–	B02P-NV	JST
Diode	Dl	FRO, 3 A, 600 V	RFN3BM6S	ROHM
	D2	FRO, 0.2 A, 600 V	RFU02VSM6S	ROHM
	DBl	1 A, 800 V	D1UBA80	SHINDENGEN
Fuse	Fl	1.6 A, 300 V	36911600000-	LITTELFUSE
IC	ICl	–	BM2PDA1Y-Z	ROHM
Jumper	Jl	0Q	MCR18EZPJ000	ROHM
Inductor	Ll	390 µH	RFS1317-394KL	COIL CRAFT
	L2	–	NON MOUNTED	–
	L3	470 µH	7447462471-	WURTH ELECTRONIK
PhotoCoup ler	PCl	–	NON MOUNTED	–
PCB	PCBl	–	PCB0178	ROHM
Resistor	Rl	–	SHORT	–
	R2	1.2 MQ	MCR03EZPFX1204	ROHM
	R3	1 MQ	MCR03EZPFX1004	ROHM
	R4	200 kQ	MCR03EZPFX2003	ROHM
	R6	10 kQ	MCR18EZPJ103	ROHM
	R7	–	NON MOUNTED	–
	R9	–	NON MOUNTED	–

Layout

Size 70 mm x 30 mm

BM2Pxx1Y Overview

Features

PWM Current Mode
Built-in Frequency Hopping Function
Burst Operation at Light Load
Built-in 730 V(peak) Starter Circuit
Built-in 730 V(peak) Super Junction MOSFET
VCC UVLO (Under Voltage Lockout)
VCC OVP (Over Voltage Protection)
Over Current Limiter Function per Cycle
Soft Start Function
Sleep Mode

Line Up

Model Name	Switching Frequency	Frequency Reduction	OCP Current
BM2PAA1Y-Z	65 kHz	0	1.76 A
BM2PAB1Y-Z	25 kHz		1.76 A
BM2PDA1Y-Z	65 kHz	0	0.93 A
BM2PDB1Y-Z	25 kHz	–	0.93 A

Key Specifications

Operating Power Supply Voltage Range
VCC 11.10 V to 26.00 V
DRAIN 730 V(peak) (Max)
Operating Current (Normal): 650 μA (Typ)
Operating Current (Burst): 350 μA (Typ)
Operating Current (Sleep): 65 μA (Typ)
Switching Frequency: 25 kHz / 65 kHz (Typ)
Operation Temperature: -40 °C to +105 °C
MOSFET ON Resistance: 1.2 Ω (Typ)

Table 3. BM2Pxx1Y-Z Pin Description

No.	Name	I/O	Function
1	N.C.	–	Non connection
2	SLEEP	I	Sleep/Normal modes witching pin
3	GND_IC	I/O	GND pin
4	FB	I	Output voltage feedback pin
5	VCC	I	Input voltage pin
6	DRAIN	I/O	MOSFET drain pin
7	DRAIN	I/O	MOSFET drain pin

Application

Washing machine, Air conditioner, Other white goods

Package

W(Typ) x D(Typ) x H(Typ)
DIP7K 9.27 mm x 6.35 mm x 8.63 mm
Pitch 2.54 mm

Measurement Data

Constant Load Regulations

Waveform

Waveform (Start Up)

Waveform (Load Response)

Waveform (Ripple Voltage)

Operation Temperature

Condition Iout=0.35 A. 20 min

Consider selecting parts after checking the temperature range of the parts used.

EMI

Revision History

Date	Rev.	Changes
Mar.2021	001	New Release
Nov. 2021	002	Max Output Power =10 W->8.4 W Max Output Current =0.417 A->0.35 A OCP Detection Current =1.0 A-> 0.93 AFET Withstand voltage =650 V-> 730 V(peak) Fiqure 8~30 modified

Notes

The information contained herein is subject to change without notice.
Before you use our Products, please contact our sales representative and verify the latest specifications :
Although ROHM is continuously working to improve product reliability and quality, semiconductors can break down and malfunction due to various factors. Therefore, in order to prevent personal injury or fire arising from failure, please take safety measures such as complying with the derating characteristics, implementing redundant and fire prevention designs, and utilizing backups and fail-safe procedures. ROHM shall have no responsibility for any damages arising out of the use of our Poducts beyond the rating specified by ROHM.
Examples of application circuits, circuit constants and any other information contained herein are provided only to illustrate the standard usage and operations of the Products. The peripheral conditions must be taken into account when designing circuits for mass production.
The technical information specified herein is intended only to show the typical functions of and examples of application circuits for the Products. ROHM does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by ROHM or any other parties. ROHM shall have no responsibility whatsoever for any dispute arising out of the use of such technical information.
The Products specified in this document are not designed to be radiation tolerant.
For use of our Products in applications requiring a high degree of reliability (as exemplified below), please contact and consult with a ROHM representative : transportation equipment (i.e. cars, ships, trains), primary communication equipment, traffic lights, fire/crime prevention, safety equipment, medical systems, servers, solar cells, and power transmission systems.
Do not use our Products in applications requiring extremely high reliability, such as aerospace equipment, nuclear power control systems, and submarine repeaters.
ROHM shall have no responsibility for any damages or injury arising from non-compliance with the recommended usage conditions and specifications contained herein.
ROHM has used reasonable care to ensurH the accuracy of the information contained in this document. However, ROHM does not warrants that such information is error-free, and ROHM shall have no responsibility for any damages arising from any inaccuracy or misprint of such information.
Please use the Products in accordance with any applicable environmental laws and regulations, such as the RoHS Directive. For more details, including RoHS compatibility, please contact a ROHM sales office. ROHM shall have no responsibility for any damages or losses resulting non-compliance with any applicable laws or regulations.
When providing our Products and technologies contained in this document to other countries, you must abide by the procedures and provisions stipulated in all applicable export laws and regulations, including without limitation the US Export Administration Regulations and the Foreign Exchange and Foreign Trade Act.
This document, in part or in whole, may not be reprinted or reproduced without prior consent of ROHM.

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