ev3302 s2 r0 - joulwatt.com · ev3302_s2_r0 joulwatt ev3302_s2_r0 joulwatt® proprietary...

EV3302_S2_R0 10 Series Cell Battery

Monitor and Protection Board Parameters Subject to ChangeParameters Subject to ChangeParameters Subject to ChangeParameters Subject to Change Without NoticeWithout NoticeWithout NoticeWithout Notice

EV3302_S2_R0 JoulWatt® Proprietary Information. Patent Protected. 1 Unauthorized Photocopy and Duplication Prohibited.

FEATURES

� Input voltage is high to 60V

� Monitor 14 series cell battery and support

series operation

� 12-BIT ∆Σ ADC samples battery voltage and

accuracy is 5V/212=1.25mV

� Provide filtering modes

� 4 channels thermal sense and the accuracy

is 5V/212=1.25mV

� Battery over/under voltage protection

� Battery over/under temperature protection

� Open wire connection detection

� 14 cells passive balance

on-chip passive cell balancing switches

provision for off-chip passive balancing

� 12-BIT ∆Σ ADC senses charge/discharge

current and accuracy is 400mV/212=97µV

� Independent discharge control by the CTLD

control pin

� Over Charge/Discharge current protection

� Charge/Discharge Short protection

� Reliable SPI communication with CPU

� 3.3V and 5.0V LDO output for external

application

� External protection N-MOSFETs

� Low power consumption

During operation 1mA typ.

During low-power 130µA typ.

During standby 80µA typ.

� LQFP-48 package

APPLICATIONS

� Electric Bicycles, Motorcycles.

� Backup Battery Systems

� Hybrid Electric Vehicles

DESCRIPTION

JW®3302 is a multi-cell battery stack monitoring

and protection IC that includes a 12-bit ADC for

battery voltage and temperature sense, a 12-bit

ADC for charge/discharge current sense.

JW3302 provides passive balance function for

each cell and allows at most 3 consecutive cells

being discharged simultaneously.

JW3302 have two ADC operation modes: fast

mode and filtering mode. The fast mode enables

conversion time as fast as 640µs, while the

filtering modes provide better than 80dB rejection

at frequencies above 50Hz.

JW3302 communicates with external control unit

via SPI interface. More JW3302 can operation in

series to monitor long string battery.

JW3302 integrates complete protect function

including over/under voltage, over/under thermal,

over charge/discharge current, short and open

wire.

JW3302 supports low-power mode and standby

mode to achieve high efficiency with low power

when charge/discharge current is minor.

EV3302_S2_R0 JoulWatt


EVALUATION BOARD

BATTERY SMART PROTECTION BOARD FUNCTION

No. Item

1 Over charge protection

2 Over discharge protection

3 Charge over current protection

4 Discharge over current protection

5 Discharge short circuit protection

6 Battery temperature protection(Need adding NTC resistor)

7 Battery voltage sample

8 MCU STM8L151C8T6



ELECTRICAL SPECIFICATIONS

Parameters Symbol Value Unit

Battery Voltage VBAT 14-60 V

Battery Cell Numbers BATTERY_CELLS_NUM 10

Battery Temperature Sense Numbers BATTERY_TEMP_NUM 4

Over charge voltage detection threshold OverChg_Threshold 4.25 V

Over charge voltage release threshold OverChg_Release 4.15 V

Over charge voltage detection delay time OverChg_Delay 1 S

Over discharge voltage detection threshold OverDis_Threshold 2.3 V

Over discharge voltage release threshold OverDis_Release 2.4 V

Over discharge voltage detection delay time OverDis_Delay 1 S

Discharge over current detection threshold DisOverCur_Threshold 50 A

Discharge over current detection delay time DisOverCur_Delay 2 S

Charge over current detection threshold ChgOverCur_Threshold 15 A

Charge over current detection delay time ChgOverCur_Delay 2 S

Discharge short circuit detection threshold DisSht_Threshold 108 A

Discharge short circuit detection delay time DisSht_Delay 320 uA

Charge over temperature detection threshold COT_Threshold 50 °C

Charge over temperature release threshold COT_Release 45 °C

Charge under temperature detection threshold CUT_Threshold -5 °C

Charge under temperature release threshold CUT_Release 0 °C

Discharge over temperature detection threshold DOT_Threshold 70 °C

Discharge over temperature release threshold DOT_Release 60 °C

Discharge under temperature detection threshold DUT_Threshold -20 °C

Discharge under temperature release threshold DUT_Release -10 °C

Temperature protection delay TP_Delay 1 S

Idle current IQ 220 uA

Operation current IOP 5 mA



SCHEMATIC

3

1

2

Q2AM2324N

R347R

1 2D6

5.1V/200mW

R11 100R C4104/25V

D3

NC

3

1

2

Q7AM2324N

R2247R

1 2

D12

5.1V/200mW

R31 100R C12104/25V

D10

NC

R43100R

3

1

2

Q10AM2324N

R4247R

1 2

D18

5.1V/200mW

R50 100R C18104/25V

D16

NC

R59100R

3

1

2

Q14AM2324N

R5847R

1 2

D25

5.1V/200mW

R63 100R C29104/25V

D22

NC

R67100R

3

1

2

Q17AM2324N

R6647R

1 2

D29

5.1V/200mW

R70 100R C35104/25V

D27

NC

R82100R

3

1

2

Q20AM2324N

R8147R

1 2

D37

5.1V/200mW

R89 100R C44104/25V

D33

NC

R97100R

3

1

2

Q25AM2324N

R9647R

1 2

D46

5.1V/200mW

R106 100R C51104/25V

D45

NC

R115100R

3

1

2

Q3AM2324N

R547R

1 2D7

5.1V/200mW

R12 100R C5104/25V

D5

NC

R25100R

3

1

2

Q8AM2324N

R2447R

1 2

D13

5.1V/200mW

R32 100R C13104/25V

D11

NC

R45100R

3

1

2

Q11AM2324N

R4447R

1 2

D19

5.1V/200mW

R51 100R C19104/25V

D17

NC

R61100R

3

1

2

Q15AM2324N

R6047R

1 2

D26

5.1V/200mW

R64 100R C30104/25V

D23

NC

R69100R

3

1

2

Q18AM2324N

R6847R

1 2

D30

5.1V/200mW

R71 100R C36104/25V

D28

NC

R84100R

3

1

2

Q21AM2324N

R8347R

1 2

D38

5.1V/200mW

R90 100RC42

104/25V

D34

NC

R99 100R

3

1

2

Q26AM2324N

R9847R

1 2

D47

5.1V/200mW

R104100R

C50

104/25V

D44

NC

R116 100R

Bat14

Bat12

Bat11

Bat10

Bat9

Bat8

Bat7

Bat7

Bat6

Bat5

Bat4

Bat3

Bat2

Bat1

Bat13

Bat0 B0

B1

B2

B3

B4

B5

B6

B7

B7

B8

B9

BA

BB

BC

BD

BE

11

22

D51SD103

GND

R23 100R

R4 100R

C54

104/25V

B1

B2

B3

B4

B5

B6

B7

B8

B9

BA

BBBCBDBE

R29 1K

R17 1K

C8101/6.3V

TP1

TP0

TS1TS2TS3TS4

3302_VDO3

VDO5

VCC

ALARMA

CLKA

CSA

MOSIA

MISOA

MISOB

MOSIB

CSB

CLKBALARMB

3302_DSCHG3302_CHG

SRPISPISN

SRN

C231uF/6.3V

C241uF/6.3V

B0

GND

GND

VM

VIN

TP2

CTLD

C21

0.1uF/100V

R52100R

GND

Bat14

CSB

1

MOSIB

2

MISOB

3

MOSIA

4

MISOA

5

CSA

6

CLKA

7

ALARMA

8

VDO5

9

VCC

10

VDO3

11

TP0

12

NC13

TP114

TP215

TS116

TS217

TS318

TS419

VIN20

BE21

BD22

BC23

BB24

NC

25

BA

26

B9

27

B8

28

B7

29

B6

30

B5

31

B4

32

B3

33

B2

34

B1

35

NC

36

B037

GND38

SRN39

ISN40

ISP41

SRP42

CTLD43

DSCHG44

CHG45

VM46

ALARMB47

CLKB48

U3

IC_JW3302_LQFP48

VIN

C9

NC

C7

NC

GND

GND

R56

NC

R57

NCVIN

R27

100R

R33

100RR37

100R

R41

100R

R19

100R

ALARM

MISO

MOSI

CS

CLKCLKB

CSB

MOSIB

MISOB

ALARMB

R47

0R

VDO33302_VDO3

C20 1uF/100V

GND

BAT+1

12

2

D54

1N4148

VCCR133

100R

Bat1Bat2Bat3Bat4Bat5Bat6Bat7Bat8Bat9Bat10Bat11Bat12Bat13Bat14

1

PACK-

NC

PACK-

R137

10K

R136

10K

R135

10K

R134

10K

C60

104/25V

C61

104/25V

C62

104/25V

C63

104/25V

TS1

TS2

TS3TS4

1

GND2

NC

1

GND1

NC

Bat0123456789101112131415

J2

15Pin

GNDGND

1

BAT-

NC

GND

R125

10K

R124

10K

R123

10K

R122

10K

VDO5

TP0TP1TP2

1

PACK+

NC

PACK+

1

BAT+

NC

BAT+

BAT INPUT

TEST PIN

TEST PIN

Bat1Bat2Bat3Bat4Bat5Bat6Bat7Bat8Bat9Bat10Bat11Bat12Bat13Bat14

Bat0123456789101112131415

J3

NC

123

J6

NC

1

23

4

5

J5

NC

GND

BX123

JA1

3Pin

B3

VM OPTION

B61

JB1

1Pin

B9

TEST PIN

INPUT AND TEST PINBAT-



Figure1. EV3302 Schematic Diagram

PA0

1

NRST/PA1

2

PA2

3

PA3

4

PA4

5

PA5

6

PA6

7

PA7

8

VSS1/VSSA/VREF-

9

VDD1

10

VDDA

11

VREF+

12

Res13

PE014

PE115

PE216

PE317

PE418

PE519

PD020

PD121

PD222

PD323

PB024

PB1

25

PB2

26

PB3

27

PB4

28

PB5

29

PB6

30

PB7

31

PF0

32

PD4

33

PD5

34

PD6

35

PD7

36

PC037

PC138

VDD239

VSS240

PC241

PC342

PC443

PC544

PC645

PC746

PE647

PE748

U8

STM8L151C8

1

23

4U9

=VALUE

R111100K

R1171M

GND

CHSE

VDO3

CHSE

GND

VDO3

C58

1uF/6.3VC59

1uF/6.3V

VDO3

VDO3

485EN_MCU485RX_MCU485TX_MCU

LED_RUN

CS

CLK

MOSI

MISO

ALARM

GND

VDO3C47

0.1uF/6.3V

RX1TX1

MCU_CHGMCU_DSG

PACK-

GND

1 2

LED1

green

R128

470R

R80

10KLDO_12V

CTLD

C52

1uF/6.3V

GND

R120

0RR121

0R

NRSTSWIM

R11410K

C551uF/6.3V

VDO3

GND

NRST

1234

J4

4Pin

VDO3SWIMGNDNRST

3510__EN

SC

PWR_CTL

1

3 2Q32

2N7002

GND

VDO3

G1 Q33

PMOS

CHG_DET

CHG_DET

PACK-R105NC

R1105mR

R1135mR

GND

11

22

D421N4148

R941K

C43

47nF/16V

GND

BX

11

22

D50

SMCJ64CA/1500W

R101NC

R95NC

SRPSRN

BAT+ PACK+

C53

104/100V

VM

1

32

Q192N7002K

R112

0R

R77

0R

B3

3

1

2

Q27

11

22 D52

D4815V

R108

0R

C56104/100V

R118 0.1R

3

1

2

Q23

11

22

D43

D3515V

R87

0R

C48104/100V

R102 0.1R

MOS_DSG

3

1

2

Q28

11

22 D53

D4915V

R109

0R

C57104/100V

R119 0.1R

3

1

2

Q24

11

22 D41

D3615V

R88

0R

C49NC

R103 0.1R

MOS_CHG

BAT-

G1 Q16

ZXMP10A13FTA

3302_CHG

GND

11

22

D311N4148

R861M

R107NC

D56

SOD-123 12V/0.5W M

MSZ12VT1G

LDO_12V

C66

0.1uF/25V

C65

1uF/25V

R126

5.1M

R127

100R

D5715V/0.5W M

MSZ15T1G

C67

1uF/25V

D55

SOD-323 0.1A/100V 1N4148WS

GND

51

4 Q29NMOS

BAT+

3302_DSCHGR46 510R

E2

C3

1

Q13MMBT3906

DSG_IN R53 100R

GND

MOS_DSG

12uA

C010.1uF

GND

MCU功功功功功功VCC从LDO_12V取取

11

22

D01

1N4148



BILL OF MATERIALS

Qty. Designator Comment Description Footprint Manufac

turer

Manufa

cturer

P/N

1 J2 15Pin Connector CON15-2.54

1 J4 4Pin Connector SIP4-2.54

1 C01 0.1uF Cap 0603C

21 C4, C5, C12, C13, C18,

C19, C29, C30, C35,

C36, C42, C44, C47,

C50, C51, C54, C60,

C61, C62, C63

104/16V Cap 0603C

1 C8 101 Cap 0603C

1 C20 1uF/100V Cap 1206C

1 C21 0.1uF/100V Cap 0805C

2 C23, C24 1uF Cap 0603C

1 C43 47nF/16V Cap 0805C

3 C48, C53, C56 104/100V Cap 1206C

4 C52, C55, C58, C59 1uF/16V Cap 0603C

14 D6, D7, D12, D13, D18,

D19, D25, D26, D29,

D30, D37, D38, D46, D47

5.1V/200mW Zener SOD323

2 D24, D31 1N4148 Diode D1206

4 D35, D36, D48, D49 15V Diode SOD123

2 D42, D54 1N4148 Diode SOD123

3 D43, D50, D52 SMCJ64CA/

1500W

Diode SMC

1 D51 SD103 Diode SOD523

1 LED1 LED LED LED0603

14 Q2, Q3, Q7, Q8, Q10,

Q11, Q14, Q15, Q17,

Q18, Q20, Q21, Q25,

Q26

AO3414 NMOS SOT23-3

1 Q9 MMBT3904 PNP SOT23-3

1 Q13 MMBT3906 NPN SOT23-3 JoulWatt

1 Q16 ZXMP10A13

FTA

PMOS SOT23-3 JoulWatt

2 Q19, Q32 2N7002 NMOS SOT23-3 ST

4 Q23, Q24, Q27, Q28 IPB042N10N

3G

NMOS TO263

1 Q29 NMOS NMOS SOP8



1 Q64 BSS84P PMOS SOT23

14 R3, R5, R22, R24, R42,

R44, R58, R60, R66,

R68, R81, R83, R96, R98

47R Res 2512R

41 R4, R11, R12, R19, R23,

R25, R27, R31, R32,

R33, R37, R41, R43,

R45, R50, R51, R52,

R53, R59, R61, R63,

R64, R67, R69, R70,

R71, R82, R84, R87,

R88, R89, R90, R97,

R99, R104, R106, R108,

R109, R115, R116

100R Res 0603R

4 R17, R29, R94, R128 1K Res 0603R

1 R133 100R Res 1206R

1 R46 510R Res 0603R

6 R47, R56, R57, R77,

R120, R121

0R Res 0603R

2 R86, R117 1M Res 0603R

2 R95, R101 5mR Res 2512R

2 R102, R118 0.1R Res 1206R

1 R111 100K Res 0603R

1 R112 0R Res 1206R

9 R114, R122, R123, R124,

R125, R206, R208, R210,

R212

10K Res 0603R

1 U9 TLP291 TLP291 SOP4

1 U3 JW3302 IC LQFP48

1 U8 STM8L151C

8

IC LQFP48



PRINTED CIRCUITS BOARD LAYEROUT

Figure4-Top Layer Figure5-Bottom Layer

Figure6-Top Overlay Figure7-Bottom Overlay



QUICK START GUIDE

These steps describe quick connection of the JW3302 to demonstrate operation of the AFE potion of the

EVB. For more detailed description, refer to other sections of user guide.

1. Get the JW3302 evaluation software from JoulWatt.

2. Connect battery power supply to the “BAT+” and “BAT-” terminals, and connect the battery pack to

the cells connector “J6” through butted lines. The EV3302 is intended to measure ten individual cells

with a total stack voltage of 14V to 60V

3. Connect electric load to the “PACK+” and “PACK-” terminals.

4. Make other adjustments as desired for evaluation. Refer to other sections of this user guide for

additional details.

CAUTION: As battery pack voltage is higher, great care must be taken to prevent damage and personal injury. Do

not allow short circuit connections, whether electrical or human, between a high voltage point and the system

ground. Be very careful and respect the potential danger of high voltage!



IMPORTANT NOTICE

� Joulwatt Technology Inc. reserves the right to make modifications, enhancements, improvements,

corrections or other changes without further notice to this document and any product described herein. � Any unauthorized redistribution or copy of this document for any purpose is strictly forbidden.

� Joulwatt Technology Inc. does not warrant or accept any liability whatsoever in respect of any products

purchased through unauthorized sales channel.

Copyright © 2018 EV3302 Incorporated.

All rights are reserved by Joulwatt Technology Inc.

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