ST ST7260E2 User Manual Download Page 16

Schematic

UM0497

16/21

  

Appendix A 

Schematic

Figure 11.

Schematic

5

5

4

4

3

3

2

2

1

1

D

D

C

C

B

B

A

A

USBDP

BATTOUT

I_

A

IN

3

V_AI

N1

SW1_PWM

SW

2_PW

M

RESET_LI

TE1BX

ST1

V_AI

N1

T_AI

N2

I_

A

IN

3

ST2

SW

1_PW

M

SW

2_PW

M

OSC1_LI

TE

OSC2_LI

TE

ICCDATA_LI

TE

ICCCLK_LI

TE

RESET_LI

TE1BX

OSC1_LI

TE

OSC2_LI

TE

OSCEXT_LI

TE

BATTOUT

ICC_DATA

OSC_I

N

RESET_ST7260

VPP_7260

USBDM

USBDP

ICC_CLK

OSCOUT

ICC_DATA

ICC_CLK

VPP_7260

OSC_EXT

OSC_I

N

RESET_ST7260

VPP_7260

OSCOUT

OSC_EXT

RESET_LI

TE1BX

USBDM

USBDP

ST2

ST1

USBDM

OSCEXT_LI

TE

ICCDATA_LI

TE

ICCCLK_LI

TE

RESET_ST7260

SHDN_CHG

SHDN_CHG

VBUS_MON

VBUS_MON

ST2

ST1

SHDN_CHG

T_AIN2

USBDM

USB VDD

VDD_LI

TE

VBUS

VBUS

VDD_LI

TE

VBUS

VBUS

USB_SUPPLY

VBUS

USB_SUPPLY

USB_SUPPLY

VDD_LI

TE

VREG

USB_SUPPLY

VREG

VREG

USB_SUPPLY

VBUS

VDD_LI

TE

VBUS

VDD_LI

TE

VDD_LI

TE

Ti

tle

Si

ze

Docume

nt

 Numbe

r

Re

v

D

a

te:

S

h

eet

of

USB BATTERY

 CHARGER _V1

1

US

B

 B

A

T

T

E

RY

 CHA

RG

E

R

11

Monda

y,

 Ja

nua

ry

 07,

 2008

Ti

tle

Si

ze

Docume

nt

 Numbe

r

Re

v

D

a

te:

S

h

eet

of

USB BATTERY

 CHARGER _V1

1

US

B

 B

A

T

T

E

RY

 CHA

RG

E

R

11

Monda

y,

 Ja

nua

ry

 07,

 2008

Ti

tle

Si

ze

Docume

nt

 Numbe

r

Re

v

D

a

te:

S

h

eet

of

USB BATTERY

 CHARGER _V1

1

US

B

 B

A

T

T

E

RY

 CHA

RG

E

R

11

Monda

y,

 Ja

nua

ry

 07,

 2008

3 PIN BATTERY

FOOTPRINT

IMS SYATEM LAB

FOR 1A TRACK

500mA

DC TO DC

pwr select

USB-B

OPTIONAL

OPTIONAL

R31

100k

R31

100k

C15

100nF

C15

100nF

1

2

R13

10k

R13

10k

C8

100nF

C8

100nF

1

2

C9

100nF

C9

100nF

1

2

R29

56

R29

56

J9

CON1

J9

CON1

1

C24

100nF

C24

100nF

C13

100nF

C13

100nF

1

2

SW

1

RESET

SW

1

RESET

1

2

R19

10k(

0

.1

%)

R19

10k(

0

.1

%)

C20

33pF

C20

33pF

Q6

2STR1215

Q6

2STR1215

R26

0.

5/

1W

(1

%)

R26

0.

5/

1W

(1

%)

R10

10k

R10

10k

R6

16k

R6

16k

D8

LED

D8

LED

C18

33pF

C18

33pF

C23

200uF

C23

200uF

C4

100nF

C4

100nF

Q7

2STR1215

Q7

2STR1215

R24

82

R24

82

Y1

16MHZ

Y1

16MHZ

J3

CON12

J3

CON12

1

2

3

4

5

6

7

8

9

10

11

12

R4

0

R4

0

SW

2

RESET

SW

2

RESET

1

2

D9

LED

D9

LED

J4

CON12

J4

CON12

1

2

3

4

5

6

7

8

9

10

11

12

Q5

2STR1215

Q5

2STR1215

R20

100

R20

100

J12

CON1

J12

CON1

1

C3

4.

7uF/

25V

C3

4.

7uF/

25V

C7

100nF

C7

100nF

1

2

C21

33pF

C21

33pF

R18

330

R18

330

JP16JP16

1

2

Q9

2STR1215

Q9

2STR1215

R11

1k

R11

1k

J6

CON10A

J6

CON10A

1

2

3

4

5

6

7

8

9

10

C5

100nF

C5

100nF

1

2

R41

100k

R41

100k

R25

5k(

0

.5

%)

R25

5k(

0

.5

%)

C6

1uF/

16V

C6

1uF/

16V

R38

10k

R38

10k

Q8

2STR1215

Q8

2STR1215

J7

CON3

J7

CON3

1

2

3

C17

100nF

C17

100nF

1

2

R33

10k

R33

10k

R42

10k

R42

10k

JP13JP13

1

2

R3

18k

R3

18k

R40

4k7

R40

4k7

C11

100nF

C11

100nF

1

2

D5

TL1431AI

Z

D5

TL1431AI

Z

C12

470uF/

16V

C12

470uF/

16V

TP1TP1

1

J10

CON1

J10

CON1

1

D1

1N5817

D1

1N5817

R36

10k

R36

10k

JP15JP15

1

2

Y2

12MHZ

Y2

12MHZ

L1

10uH

L1

10uH

1

2

JP12JP12

1

2

C19

10nF

C19

10nF

1

2

R32

1k

R32

1k

U5

ST7FLI

T15BY

0

M6

U5

ST7FLI

T15BY

0

M6

VSS

1

VDD

2

RESET

3

CO

M

P

IN+

SS/AIN0

/PB0

4

SCK/AIN1

/PB1

5

M

ISO

/AIN2

/PB2

6

M

O

SI/AIN3

/PB3

7

COM

P

IN-/CL

KIN/AIN4

/PB4

8

PA7

(HS)CO

M

P

O

U

T

9

PA6

/M

CO/ICCCL

K/BREAK

10

PA5

(HS)/AT

P

W

M

3

/ICCDAT

A

11

PA4

(HS)/ATPW

M

2

12

PA2

(HS)ATPW

M

0

13

PA0

(HS)/L

TIC

14

OSC2

/PC1

15

O

S

C1

/CL

K

IN/PC0

16

L2

33uH

L2

33uH

C2

47uF/

16V

C2

47uF/

16V

R16

50

R16

50

R43

POT

R43

POT

1

3

2

R37

1M

R37

1M

R17

4k4(

0.

1%)

R17

4k4(

0.

1%)

R9

0

R9

0

R34
1k

R34
1k

J5

CON3

J5

CON3

1

2

3

R28

10k

R28

10k

C22

10nF

C22

10nF

1

2

Q2

2STR2215

Q2

2STR2215

J8

CON10A

J8

CON10A

1

2

3

4

5

6

7

8

9

10

D3

LED

D3

LED

JP1JP1

1

2

JP3JP3

1

2

C1

47uF/

16V

C1

47uF/

16V

D7

1N5819

D7

1N5819

J1

CON4

J1

CON4

4

3

2

1

5

6

C10

100nF

C10

100nF

R7

10k

R7

10k

C16

33pF

C16

33pF

U4

 ST72F60E2M1 

U4

 ST72F60E2M1 

VDD

1

OSCOUT

2

OS

CI

N

3

VSS

4

TD

O

/PC

1

5

RDI/PC0

6

RESET

7

IT

7/

P

B

6

(10m

A

)

8

Vp

p

/TEST

9

PB3

/(1

0

m

A)

10

PB2

/1

0

(m

A

)

11

USBO

E/PB1

(1

0

m

A)

12

PB0

(1

0

m

A)

13

PA7

/O

CM

P2

/IT4

14

PA5

/ICAP2

/IT2

15

PA4

/ICAP1

/IT1

16

PA3

/EXTCL

K

17

PA2

(2

5

m

A)/SCL

/ICCCL

K

18

PA1

(2

5

m

A)/SDA/ICCDAT

A

19

PA0

/M

CO

20

Vs

s

a

21

USBDP

22

USBDM

23

USBVc

c

24

R30

4k7

R30

4k7

D4

LED

D4

LED

R23

470

R23

470

U2

L6920D

U2

L6920D

FB

1

LB

I

2

LB

O

3

REF

4

SHDN

5

GND

6

LX

7

OUT

8

Q3

2STR2215

Q3

2STR2215

R8

100k

R8

100k

JP14JP14

1

2

R27

1

K

R27

1

K

R15

1k

R15

1k

R2

100k

R2

100k

Q4

2STR1215

Q4

2STR1215

R35

4k7

R35

4k7

J11

CON1

J11

CON1

1

D6

1N5819

D6

1N5819

R39

4k7

R39

4k7

Q1

2STR2215

Q1

2STR2215

U1

ST890BDR

U1

ST890BDR

IN

1

IN

2

ON

3

GND

4

SET

5

OUT

6

OUT

7

FAU

L

T

8

R14

1k

R14

1k

M1

STT3PF30L

M1

STT3PF30L

U3

STM1061N25W

X6F

U3

STM1061N25W

X6F

OUT

1

VSS

2

VCC

3

R21

1k5

R21

1k5

BT1

BATTERY

BT1

BATTERY

1


3

C14

100nF

C14

100nF

1

2

R22

5k(

0

.5

%)

R22

5k(

0

.5

%)

J2

CON8

J2

CON8

1

2

3

4

5

6

7

8

D2

1N5817

D2

1N5817

R5

200k

R5

200k

Summary of Contents for ST7260E2

Page 1: ...e accuracy requirement for charging An additional current limiter is also included in series with a USB power supply to show any incorrect behavior using a status LED A provision is provided on evalua...

Page 2: ...ly shutdown control circuit for the USB controller 6 1 2 7 Jumpers and connectors 6 1 2 8 DC DC converter circuit 8 2 Running the evaluation board 9 2 1 Connecting to the PC 9 2 2 Connecting the Li Io...

Page 3: ...for the charger 5 Figure 3 Power selector circuit 5 Figure 4 Supply generation circuit for the USB controller 6 Figure 5 Connector J2 7 Figure 6 Clock selector 7 Figure 7 DC DC converter circuit 8 Fig...

Page 4: ...ply The evaluation board is powered by a USB bus directly As only 100 mA current is available by default from the USB bus the charger is inititally kept in shutdown mode After proper enumeration is do...

Page 5: ...oltage is used to generate a precise voltage supply for the charger system Figure 2 Reference voltage generation for the charger With the help of this precision supply we can easily achieve the 1 accu...

Page 6: ...USB controller LED D4 is used to show the status of the input supply availability which glows whenever the input supply falls below a certain threshold determined by the voltage at LBI 1 2 6 Supply sh...

Page 7: ...pply to pin 2 of JP16 J2 As shown in Figure 5 this is a 7 pin connector and can be used to connect to the external USB controller Figure 5 Connector J2 Warning You can connect to only one USB controll...

Page 8: ...trolled by the two PWM signals coming from the charger controller ST7LIT15BY0 Figure 7 DC DC converter circuit This DC DC converter provides power to the single cell Li Ion 3 pin battery pack based on...

Page 9: ...the evaluation board is ready to be used 2 1 Connecting to the PC As soon as you connect the USB connector to the evaluation board you should find the evaluation board enumerated as an HID device as...

Page 10: ...in order to avoid making it package specific Instead a 3 pin connector is provided on the evaluation board as shown in Figure 10 Figure 10 Li Ion battery 3 pin connector You can either solder a partic...

Page 11: ...trol different charging parameters Table 1 Charging LED status SL NO Charging status Red LED D8 Green LED D9 1 Battery not present Idle OFF OFF 2 Charging ongoing ON OFF 3 Charging done OFF ON 4 Error...

Page 12: ...arging For example Y 18 for 45 mA short circuit current 12 LION_VHEAT_ UP Heat indicator threshold For example Z 80 for 45 Celsius degree temperature Here R1 is in k 13 LION_VHEAT_ DOWN Cold indicator...

Page 13: ...mA 3 During battery charging as the USB controller is also being powered by a USB the power consumption of the system should be kept at less than 150 mA otherwise we may not achieve the targeted 250 m...

Page 14: ...5 V 1 A by connecting the positive pin of this supply to pin 2 of jumper JP16 see Section 1 2 7 and the negative pin to ground see Figure 11 Schematic 2 Remove jumpers JP1 JP3 JP12 JP13 JP14 and JP15...

Page 15: ...limited to 300 mA value using the USB supply You can use an external supply for increasing the charging current by using it in standalone mode as mentioned in Section 4 2 There is no protection for re...

Page 16: ...J6 CON10A 1 2 3 4 5 6 7 8 9 10 C5 100nF C5 100nF 1 2 R41 100k R41 100k R25 5k 0 5 R25 5k 0 5 C6 1uF 16V C6 1uF 16V R38 10k R38 10k Q8 2STR1215 Q8 2STR1215 J7 CON3 J7 CON3 1 2 3 C17 100nF C17 100nF 1...

Page 17: ...nF 805 Any 4 1 C6 1 F 16 V Electrolytic cylindrical 5 1 C12 470 F 16 V Electrolytic cylindrical Any 6 4 C16 C18 C20 C21 33 pF 805 Any 7 2 C19 C22 10 nF 805 Any 8 1 C23 200 F Electrolytic cylindrical...

Page 18: ...Any 31 6 R11 R14 R15 R27 R32 R34 1 k 805 Any 32 1 R16 50 805 Any 33 1 R17 4k4 0 1 805 RS Components 215 3112 34 1 R18 330 805 Any 35 1 R19 10 k 0 1 805 RS Components 215 3493 36 1 R20 100 805 Any 37...

Page 19: ...8 ST L6920D 50 1 U3 STM1061N25WX6F SOT23 3 ST STM1061N25WX6F 51 1 U4 ST72F60E2M1 SO24 ST ST72F60E2M1 52 1 U5 ST7FLIT15BY0M6 SO16 ST ST7FLIT15BY0M6 53 1 Y1 16 MHz Crystal oscillator Any 54 1 Y2 12 MHz...

Page 20: ...Revision history UM0497 20 21 7 Revision history Table 4 Document revision history Date Revision Changes 07 Feb 2008 1 Initial release...

Page 21: ...NTIES OF MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION OR INFRINGEMENT OF ANY PATENT COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT UNLESS E...

Reviews: