STEVAL-ISB003V1 Demonstration board on USB Li-Ion battery charger Features

STEVAL-ISB003V1 Demonstration board on USB Li-Ion battery charger Features
STEVAL-ISB003V1
Demonstration board on USB Li-Ion battery charger
based on the microcontroller ST7260E2
Data brief
Features
■
Can be powered from USB connector
■
Available to work stand alone powered from
external power supply (5 V, 1 A)
■
Max. charging current 250 mA
Description
This demonstration board is an USB based single
cell Li-Ion battery charger which consists of the
ST7260E2-based low-speed USB controller and
the ST7LIT15BY0-based battery charger.
This board includes a power selector circuit to
select the appropriate power supply source and a
step-up converter circuit based on the L6920
device to provide a fixed output voltage to the
USB controller. The power supply for the battery
charger controller is generated from TL1431
keeping in mind the 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.
STEVAL-ISB003V1
A provision is provided on demonstration board
such that any external low-speed USB controller
can control the charger operation, hence this
system can be used with any low-speed USB
controller.
The charger used in this demonstration board
utilizes a modified form of non-inverting
buckboost converter to support the charging
voltage requirement for single cell Li-Ion battery.
This converter is explained in more detail in
AN2390.
This demonstration board system is a complete
USB-based portable system which uses a single
cell Li-Ion in MP3 players for example.
There are separate ICP connectors provided on
the evaluation board to reprogram the USB
controller and charger controller.
May 2011
Doc ID 14769 Rev 2
For further information contact your local STMicroelectronics sales office.
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www.st.com
4
Doc ID 14769 Rev 2
LED
D9
VBUS
R20
100
R18
330
5
R23
470
R27 1K
2STR1215
Q7
R32
Y1
16MHZ
OSC2_LITE
Q8
2STR1215
R38
10k
10k
R36
D7
1N5819
2STR2215
Q3
1
C17
100nF
1
2
10k
R42
50
1
C13
100nF
V_AIN1
2
R19
10k(0.1%)
R17
4k4(0.1%)
R16
R8
100k
ST2
RESET_LITE1BX
I_AIN3
T_AIN2
V_AIN1
ST1
BATTOUT
TL1431AIZ
D5
R25
5k(0.5%)
2
10nF
R35
4k7
1
1
2
SW 2
2 RESET
4
1
2
C9
100nF
2
C7
100nF
VBUS
TP1
0.5/1W(1%)
PA4(HS)/ATPWM2
PA2(HS)ATPWM0
PA0(HS)/LTIC
OSC2/PC1
OSC1/CLKIN/PC0
C15
100nF
R26
I_AIN3
BT1
BATTERY
PA7(HS)COMPOUT
PA6/MCO/ICCCLK/BREAK
1
2
1
3 PIN BATTERY
FOOTPRINT
VDD_LITE
R43
POT
5
6
7
8
PA5(HS)/ATPWM3/ICCDATA
COMPIN-/CLKIN/AIN4/PB4
MOSI/AIN3/PB3
MISO/AIN2/PB2
SET
OUT
OUT
FAULT
100k
ST890BDR
GND
ON
IN
R22
5k(0.5%)
SCK/AIN1/PB1
C22
1
U1
IN
ST7FLIT15BY0M6
4
3
2
1
COMPIN+SS/AIN0/PB0
RESET
VDD
VSS
VDD_LITE
8
7
6
5
4
3
2
1
U5
DC TO DC
RESET_LITE1BX
VDD_LITE
2
VBUS
C12
470uF/16V
1N5819
D6
Q6
2STR1215
D3
LED
R14
1k
C6
1uF/16V
2STR2215
Q1
VDD_LITE
R29
56
10k
R7
JP16
Q5
2STR1215
R24
82
33uH
L2
VBUS
100nF
C4
C3
4.7uF/25V
USB VDD
USBDM
USBDP
OSCEXT_LITE
1k R34
1k
33pF
C21
33pF
C18
1
2
3
4
CON4
J1
SW 2_PW M
6
FOR 1A TRACK
VBUS
LED D8
Q4
2STR1215
100nF
C24
R37
1M
SW1_PWM
R2
1
3
2
T_AIN2
1
3
USB-B
OSC2_LITE
OSC1_LITE
C14
100nF
ST1
ST2
9
OSCEXT_LITE
11 ICCCLK_LITE
10
2
2
J7
CON3
OSC1_LITE
VDD_LITE
R31
100k
J3
CON12
D1
1N5817
D2
1N5817
VREG
SHDN_CHG
C19
2
1
1
3
5
7
9
1
2
CON10A
J8
10nF
RESET
SW 1
USB_SUPPLY
R30
4k7
RESET_ST7260
JP14
1
JP13
1
VDD_LITE
4k7
R41
100k
OSC_IN
2
OSCOUT
JP1
VPP_7260
4k7 R40
R39
1
R11
1k
M1
STT3PF30L
RESET_ST7260
USB_SUPPLY
VBUS
Q9
12 ICCDATA_LITE 2STR1215
13 SW 2_PW M
14 SW 1_PW M
15
16
2
1
C23
200uF
BATTOUT
pwr select
2
4
6
8
10
12
11
10
9
8
7
6
5
4
3
2
1
2
100nF
1
2
OUT
VSS
VCC
1
2
3
6
2
4
R3
18k
PA0/MCO
33pF
C20
33pF
C16
Y2
12MHZ
OSCOUT
OSC_EXT
USBOE/PB1(10mA)
PB2/10(mA)
PB3/(10mA)
Vpp/TEST
1
CON1
J9
R10
10k
C8
100nF
R9
0
OPTIONAL
R4
0
OPTIONAL
USB_SUPPLY
500mA
J4
CON12
1
2
8
1
3
5
2
J5
CON3
13
14
15
16
17
18
19
20
21
22
23
24
OSC_EXT
PB0(10mA)
PA7/OCMP2/IT4
PA5/ICAP2/IT2
PA4/ICAP1/IT1
PA3/EXTCLK
PA2(25mA)/SCL/ICCCLK
IT7/PB6(10mA)
RESET
Vssa
USBDP
USBDM
USBVcc
100nF
10k
OUT
FB
LBO
SHDN
U2
L6920D
L1
10uH
C10
VREG
R13
GND
LBI
REF
1
RDI/PC0 PA1(25mA)/SDA/ICCDATA
ST72F60E2M1
U3
STM1061N25W X6F
TDO/PC1
VSS
OSCIN
OSCOUT
VDD
U4
1
C11
R6 C5
16k 100nF
ICCDATA_LITE
ICCCLK_LITE
RESET_LITE1BX
1
2
3
4
5
6
7
8
9
10
11
12
7
LX
2/4
OSC_IN
1
2
3
R5
200k
1
CON1
J10
USB_SUPPLY
1
USBDP
JP12
2
1
2
1
R33
10k
1
2
3
4
5
6
7
8
AM00615v1
CON1
J12
ICC_DATA
2 ICC_CLK
4 RESET_ST7260
6
VPP_7260
8
10
VBUS
USBDM
VBUS_MON
JP3
SHDN_CHG
VBUS_MON
J P 1 5SHDN_CHG
2
CON10A
1
1
ICC_CLK
J6
CON1
J11
1
3
5
7
9
1k5
USBDM
ICC_DATA
R21
D4
LED
R15
1k
2STR2215
Q2
USBDM
USBDP
ST2
ST1
47uF/16V
USB_SUPPLY
C2
VREG
C1
47uF/16V
R28
10k
J2
Figure 1.
1
2
3
4
5
6
7
8
9
10
11
12
1
1
2
3
Block diagram
STEVAL-ISB003V1
Block diagram
USB battery charger
STEVAL-ISB003V1
2
Revision history
Revision history
Table 1.
Document revision history
Date
Revision
Changes
04-Jun-2008
1
Initial release.
20-May-2011
2
Updated cover page.
Doc ID 14769 Rev 2
3/4
STEVAL-ISB003V1
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