BP3622 [ROHM]

ROHM的13.56MHz无线充电模块是面向小型传感设备和可穿戴设备设计而成的。可实现Qi标准难以实现的超小型设备的无线充电功能。13.56MHz是与NFC通信协议相同的频段，因此可以共用NFC通信天线进行供电。通过成对使用已完成天线设计和匹配调试的BP3621（发射）和BP3622（接收）模块，可以大大缩短天线设计和匹配调试的开发时间。;


型号：	BP3622
厂家：	ROHM
描述：	ROHM的13.56MHz无线充电模块是面向小型传感设备和可穿戴设备设计而成的。可实现Qi标准难以实现的超小型设备的无线充电功能。13.56MHz是与NFC通信协议相同的频段，因此可以共用NFC通信天线进行供电。通过成对使用已完成天线设计和匹配调试的BP3621（发射）和BP3622（接收）模块，可以大大缩短天线设计和匹配调试的开发时间。通信无线
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中文：	中文翻译
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Wireless Charger Module

13.56 MHz Wireless Charger Module

BP3622

General Description

Package

BP3622 is a compact wireless charger module with

integrated antenna board.

Features

- Wireless power receiver

W (Typ.) × D (Typ.) × H (Typ.)

24.0 mm × 17.0 mm × 1.5 mm

- Optimized for wireless charging with BP3621

- 212 kbps wireless communication

Major Performance

Parameter

Description

Power supply

Antenna size

Board

Max 200 mW (d = 10.0 mm)

16.0 mm × 16.0 mm

FR-4, t = 0.4 mm

Parts are mounted on one side

0.5 mm pitch / 8 pin FPC connector

0.38 g

Host interface

Weight

Block Diagram

BP3622

ISO_V

RFDET

P12

SDA_S

SCL_S

BAT

Matching

Circuit

Wireless

Charger

LSI

Flexible

Cable

Antenna coil

Connector

Diode

INT_S

GND

Bridge

Figure 1. Block Diagram

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Datasheet

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1. Absolute Maximum Ratings

No.

Parameter

Symbol

Rating

Unit

Condition

Ta=25 ºC

Input Voltage

V_DD

V_DIN

-0.3 to +6.5

-0.3 to V_DD+ 0.3

-10 to +10

Input Voltage (Digital IO *1)

Input Current (Digital IO *1)

Output Voltage (Digital IO *1)

Ta=25 ºC

Humidity:

V_DO

-0.3 to V_DD+ 0.3

Operating temperature range

Storage temperature range

T_opr

-10 to +50

-20 to +50

ºC

35 % to 85 %RH

No dew condensation

Humidity:

T_stg

35 % to 85 %RH

No dew condensation

(*1) Digital IO: P12, RFDET, INT_S, SCL_S, SDA_S

(Note) The absolute maximum ratings represent values that shall not be exceeded for even an instant on all operating

or testing conditions. Design systems with a margin for the ratings listed above.

(Note) This module can be operated only in combination with BP3621. Operation with other systems is not

guaranteed.

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2. Recommended Operating Conditions

Specification

No.

Parameter

Symbol

Unit

Condition

Min.

-10

Typ.

Max.

Operating temperature range

Distance between Antennas

Load resistance

T_opr

D_ant

R_load

ºC

10.0

100

200

(*1) The power feeding antenna and the power receiving antenna should face each other horizontally.

See Figure 5 and Figure 6 for reference.

(*2) See Figure 2 and Figure 3 for reference.

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3. Electrical Characteristics

DC Function

(Ta=25 ºC)

Specification

Typ.

No.

Parameter

Symbol

Unit

Condition

Min.

Max.

V_DD

V_OH

V_OL

Output Voltage

0.5

(INT_S, SDA_S, RFDET)

0.4

V_DD

0.7

V_IH1

×V_DD

Input Voltage

(SCL_S, SDA_S, P12)

0.3 ×

V_DD

V_IL1

(*1) P12 settled “Pull Up Input, Detect High signal”.

“Pull Up” is done in this module.

“Pull Up” voltage depends on the power supplied from BP3621. (1.8 V to 5.5 V)

“Pull Up” resistance value is typ. 100 kΩ.

Power Supply Characteristics

(Ta=25 ºC)

Condition

Specification

No.

Parameter

Symbol

Unit

Min.

Typ.

200

Max.

Output Power *1

Output Voltage *1*2

W_BAT

V_BAT

4.5

5.5

(*1) During power supply from BP3621.

(*2) Set the load resistance value so that the output voltage does not fall below 4.5 V.

(Note) The characteristics of this module are ensured when using a BP3621 with a matching capacitor (optimized

matching constant) as the power feeding system.

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4. Typical Performance Curves

Lower limit under each condition

Upper limit

240

220

200

180

160

140

120

100

BP3621 VDD=5.5V

BP3621 VDD=5.0V

BP3621 VDD=4.5V

100

120

140

160

180

200

220

Load resistance [Ω]

Figure 2. Output Power vs Load resistance

Lower limit under each condition

Upper limit

5.2

5.1

5.0

4.9

4.8

4.7

4.6

4.5

BP3621 VDD=5.5V

BP3621 VDD=5.0V

BP3621 VDD=4.5V

100

120

140

160

180

200

220

Load resistance [Ω]

Figure 3. Output Voltage vs Load resistance

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BP3621 VDD=5.5V

BP3621 VDD=5.0V

BP3621 VDD=4.5V

100

150

200

Elapsed time [s]

Figure 4. Surface temperature of IC vs Elapsed time

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Antenna center

BP3621

BP3622

Available feeding range = 7mm @Load resistance = 120 Ω

Available feeding range = 10mm @Load resistance = 200 Ω

Figure 5. Available feeding range (Top view)

4mm

BP3622

Antenna center

Available feeding area @Load resistance = 200 Ω

BP3621

4mm

10mm

Figure 6. Available feeding area (Side view)

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5. I2C AC Function

(Standard mode: 100 kHz, Ta=25 ºC)

Specification

No.

Parameter

Symbol

f_SCL

Unit

kHz

µs

Condition

Min.

Typ.

Max.

100

SCL_S clock frequency

SCL_S hold time

t_HD:STA

4.0

(start/repeated start condition)

SCL_S “L” level time

SCL_S “H” level time

SCL_S setup time

t_LOW

4.7

4.0

µs

t_HIGH

t_SU:STA

4.7

µs

(repeated start condition)

SDA_S hold time

t_HD:DAT

t_SU:DAT

µs

SDA_S setup time

0.25

SDA_S setup time

t_SU:STO

t_BUF

4.0

4.7

µs

(P: Stop condition)

Bus free time

(Fast mode: 400 kHz, Ta=25 ºC)

Specification

No.

Parameter

Symbol

f_SCL

Unit

kHz

µs

Condition

Min.

Typ.

Max.

400

SCL_S clock frequency

SCL_S hold time

t_HD:STA

0.6

(start/repeated start condition)

SCL_S “L” level time

SCL_S “H” level time

SCL_S setup time

t_LOW

1.3

0.6

µs

t_HIGH

t_SU:STA

0.6

µs

(repeated start condition)

SDA_S hold time

t_HD:DAT

t_SU:DAT

µs

SDA_S setup time

0.1

SDA_S setup time

t_SU:STO

t_BUF

0.6

1.3

µs

(P: Stop condition)

Bus free time

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6. Operation Flow

When BP3621 detects BP3622, it starts pre-charge operation and charge operation.

Check if a TAG is BP3622

BP3621

BP3622

Figure 7. Operation Flow

BP3621/BP3622 has three functions for controlling the power supply.

1．Communication function (Communication) BP3621 checks the response from BP3622 to determine

whether the power is supplied. Then, BP3621 receives the state of BP3622 and checks the power

supply change request and full charge status.

2．Power Supply Function (Power Transfer) BP3621 transfers power to BP3622.

3．Notification function (Notify) BP3622 requests to communicate with BP3621 to notify a power

supply change request or abnormal condition detection during power supply.

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7. Physical Dimension

The antenna pattern is drawn on the back of the component mounting side.

Direction to face BP3621

Antenna Center

Flexible Cable Connector

Unit: mm

Figure 8. Physical Dimension

(Note) Dimensions without tolerances are for reference only.

(Note) When the product is shipped, the actuator of the connector is open. The height dimension is when the actuator

is closed.

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8. Precautions for Installation

1. This module has an antenna on the side opposite to the component mounting side.

2. Use the power feeding side antenna facing the antenna side of this module.

3. Align the center of the antenna of this module with the center of the power feeding antenna.

4. Attach double-sided tape to the antenna side and attach it to any position.

(Double-sided tape is not included with this product.)

5. Do not block the magnetic flux between the antennas.

6. This module is equipped with Hirose FH34SRJ-8S-0.5SH(50) as a flexible cable connector.

(Flexible cable is not included with this product.)

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9. Pin Descriptions

Flexible cable

insertion direction

Figure 9. Pin Number (flexible cable connector)

Connections for unused pins

Open

Pin No.

Pin Name

I/O

Function

ISO_V

Logic IO voltage

RF signal detection output

- Hi-Z: No Active

RFDET

Open

- Low: Active after Power on and finish the

initial setting

Charger IC status input

- Pull Up Input, Detect High signal

I2C serial data access

I2C clock

P12 *1

GND

SDA_S

SCL_S

BAT

I/O

Open

Power output

Interrupt information output

- High: No Active

INT_S

GND

Open

- Low: Active when an interrupt occurs

Ground

(*1) When “Low” voltage is input to the P12 pin, power is output from the BAT pin.

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10. PCB Marking Specification

Unit: mm

Figure 10. PCB Marking Specification

Marking

137*▲▲▲▼: Production Lot Number (8 digits)

↓

(Example) 137 → Year 2021, Week 37, *▲▲▲▼ (internal serial number)

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11. Reference Circuit

Figure 11. Reference Circuit Diagram

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12. Packing Specification

12.1 Packing Method

25 pieces of products are packaged in the packaging tray, and it is piled up 12 steps to make 300 pieces with an empty

tray on the top, and it is packed into the packaging case.

The number of piling might change according to the quantity of delivery without previous notice.

Packaging tray

Fixed by adhesive cellophane tape.

Packaging trays are rotated 180 degrees

and stacked alternately.

BP3622: 25 pieces

Fixed by adhesive cellophane tape.

Packaging case

Figure 12. Packing Method

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BP3622

12.2 Label Indication

The label with following things is stuck at the packing case.

Type name (BP3622)

Quantity

Lot No.

Shipment inspection stamp

Country of origin

Manufacturing company name (Trade mark)

Logotype of lead free

Please refer to the following example of the label indication.

(a) For products of ROHM APOLLO

(b) For products of ROHM INTEGRATED SYSTEMS (THAILAND)

Figure 13. Label Indication

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13. Product Weight

0.38 g (Typ.)

14. Manufacturing Country

JAPAN

THAILAND

15. Notice

● Precaution on using this Product

1) This Product may be subjected to radio wave interference from other equipment emitting radio waves.

2) This Product emits radio waves due to the specification. To use equipment emitting radio waves, certification

under the Radio Act should be obtained by region in which the Product is used. For the standards for certification

under the Radio Act to be obtained for the use of this Product, separately contact your ROHM representative.

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16. Revision History

Rev.

001

Date

15.Sep.2021

Contents

New Issue

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Notice

Precaution on using ROHM Products

1. Our Products are designed and manufactured for application in ordinary electronic equipment (such as AV equipment,

OA equipment, telecommunication equipment, home electronic appliances, amusement equipment, etc.). If you

intend to use our Products in devices requiring extremely high reliability (such as medical equipment ^{(Note 1)}, transport

equipment, traffic equipment, aircraft/spacecraft, nuclear power controllers, fuel controllers, car equipment including car

accessories, safety devices, etc.) and whose malfunction or failure may cause loss of human life, bodily injury or

serious damage to property (“Specific Applications”), please consult with the ROHM sales representative in advance.

Unless otherwise agreed in writing by ROHM in advance, ROHM shall not be in any way responsible or liable for any

damages, expenses or losses incurred by you or third parties arising from the use of any ROHM’s Products for Specific

Applications.

(Note1) Medical Equipment Classification of the Specific Applications

JAPAN

USA

CHINA

CLASSⅢ

CLASSⅣ

CLASSⅡb

CLASSⅢ

2. ROHM designs and manufactures its Products subject to strict quality control system. However, semiconductor

products can fail or malfunction at a certain rate. Please be sure to implement, at your own responsibilities, adequate

safety measures including but not limited to fail-safe design against the physical injury, damage to any property, which

a failure or malfunction of our Products may cause. The following are examples of safety measures:

[a] Installation of protection circuits or other protective devices to improve system safety

[b] Installation of redundant circuits to reduce the impact of single or multiple circuit failure

3. Our Products are designed and manufactured for use under standard conditions and not under any special or

extraordinary environments or conditions, as exemplified below. Accordingly, ROHM shall not be in any way

responsible or liable for any damages, expenses or losses arising from the use of any ROHM’s Products under any

special or extraordinary environments or conditions. If you intend to use our Products under any special or

extraordinary environments or conditions (as exemplified below), your independent verification and confirmation of

product performance, reliability, etc, prior to use, must be necessary:

[a] Use of our Products in any types of liquid, including water, oils, chemicals, and organic solvents

[b] Use of our Products outdoors or in places where the Products are exposed to direct sunlight or dust

[c] Use of our Products in places where the Products are exposed to sea wind or corrosive gases, including Cl2,

H2S, NH3, SO2, and NO2

[d] Use of our Products in places where the Products are exposed to static electricity or electromagnetic waves

[e] Use of our Products in proximity to heat-producing components, plastic cords, or other flammable items

[f] Sealing or coating our Products with resin or other coating materials

[g] Use of our Products without cleaning residue of flux (Exclude cases where no-clean type fluxes is used.

However, recommend sufficiently about the residue.) ; or Washing our Products by using water or water-soluble

cleaning agents for cleaning residue after soldering

[h] Use of the Products in places subject to dew condensation

4. The Products are not subject to radiation-proof design.

5. Please verify and confirm characteristics of the final or mounted products in using the Products.

6. In particular, if a transient load (a large amount of load applied in a short period of time, such as pulse, is applied,

confirmation of performance characteristics after on-board mounting is strongly recommended. Avoid applying power

exceeding normal rated power; exceeding the power rating under steady-state loading condition may negatively affect

product performance and reliability.

7. De-rate Power Dissipation depending on ambient temperature. When used in sealed area, confirm that it is the use in

the range that does not exceed the maximum junction temperature.

8. Confirm that operation temperature is within the specified range described in the product specification.

9. ROHM shall not be in any way responsible or liable for failure induced under deviant condition from what is defined in

this document.

Precaution for Mounting / Circuit board design

1. When a highly active halogenous (chlorine, bromine, etc.) flux is used, the residue of flux may negatively affect product

performance and reliability.

2. In principle, the reflow soldering method must be used on a surface-mount products, the flow soldering method must

be used on a through hole mount products. If the flow soldering method is preferred on a surface-mount products,

please consult with the ROHM representative in advance.

For details, please refer to ROHM Mounting specification

Notice-PGA-E

Rev.004

Precautions Regarding Application Examples and External Circuits

1. If change is made to the constant of an external circuit, please allow a sufficient margin considering variations of the

characteristics of the Products and external components, including transient characteristics, as well as static

characteristics.

2. You agree that application notes, reference designs, and associated data and information contained in this document

are presented only as guidance for Products use. Therefore, in case you use such information, you are solely

responsible for it and you must exercise your own independent verification and judgment in the use of such information

contained in this document. ROHM shall not be in any way responsible or liable for any damages, expenses or losses

incurred by you or third parties arising from the use of such information.

Precaution for Electrostatic

This Product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. Please take proper

caution in your manufacturing process and storage so that voltage exceeding the Products maximum rating will not be

applied to Products. Please take special care under dry condition (e.g. Grounding of human body / equipment / solder iron,

isolation from charged objects, setting of Ionizer, friction prevention and temperature / humidity control).

Precaution for Storage / Transportation

1. Product performance and soldered connections may deteriorate if the Products are stored in the places where:

[a] the Products are exposed to sea winds or corrosive gases, including Cl₂, H₂S, NH₃, SO₂, and NO₂

[b] the temperature or humidity exceeds those recommended by ROHM

[c] the Products are exposed to direct sunshine or condensation

[d] the Products are exposed to high Electrostatic

2. Even under ROHM recommended storage condition, solderability of products out of recommended storage time period

may be degraded. It is strongly recommended to confirm solderability before using Products of which storage time is

exceeding the recommended storage time period.

3. Store / transport cartons in the correct direction, which is indicated on a carton with a symbol. Otherwise bent leads

may occur due to excessive stress applied when dropping of a carton.

4. Use Products within the specified time after opening a humidity barrier bag. Baking is required before using Products of

which storage time is exceeding the recommended storage time period.

Precaution for Product Label

A two-dimensional barcode printed on ROHM Products label is for ROHM’s internal use only.

Precaution for Disposition

When disposing Products please dispose them properly using an authorized industry waste company.

Precaution for Foreign Exchange and Foreign Trade act

Since concerned goods might be fallen under listed items of export control prescribed by Foreign exchange and Foreign

trade act, please consult with ROHM in case of export.

Precaution Regarding Intellectual Property Rights

1. All information and data including but not limited to application example contained in this document is for reference

only. ROHM does not warrant that foregoing information or data will not infringe any intellectual property rights or any

other rights of any third party regarding such information or data.

2. ROHM shall not have any obligations where the claims, actions or demands arising from the combination of the

Products with other articles such as components, circuits, systems or external equipment (including software).

3. No license, expressly or implied, is granted hereby under any intellectual property rights or other rights of ROHM or any

third parties with respect to the Products or the information contained in this document. Provided, however, that ROHM

will not assert its intellectual property rights or other rights against you or your customers to the extent necessary to

manufacture or sell products containing the Products, subject to the terms and conditions herein.

Other Precaution

1. This document may not be reprinted or reproduced, in whole or in part, without prior written consent of ROHM.

2. The Products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written

consent of ROHM.

3. In no event shall you use in any way whatsoever the Products and the related technical information contained in the

Products or this document for any military purposes, including but not limited to, the development of mass-destruction

weapons.

4. The proper names of companies or products described in this document are trademarks or registered trademarks of

ROHM, its affiliated companies or third parties.

Notice-PGA-E

Rev.004

Daattaasshheeeett

General Precaution

1. Before you use our Pro ducts, you are requested to care fully read this document and fully understand its contents.

ROHM shall not be in an y way responsible or liable for failure, malfunction or accident arising from the use of a ny

ROHM’s Products against warning, caution or note contained in this document.

2. All information contained in this docume nt is current as of the issuing date and subj ect to change without any prior

notice. Before purchasing or using ROHM’s Products, please confirm the la test information with a ROHM sale s

representative.

3. The information contained in this doc ument is provi ded on an “as is” basis and ROHM does not warrant that all

information contained in this document is accurate an d/or error-free. ROHM shall not be in an y way responsible or

liable for any damages, expenses or losses incurred by you or third parties resulting from inaccuracy or errors of or

concerning such information.

Notice – WE

Rev.001

BP3622 [ROHM]

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