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MSP430BQ1010IRTVT Datasheet(PDF) 9 Page - Texas Instruments

Part No. MSP430BQ1010IRTVT
Description  WIRELESS RECEIVER-SIDE COMMUNICATION AND POWER MONITORING IC
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

MSP430BQ1010IRTVT Datasheet(HTML) 9 Page - Texas Instruments

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MSP430BQ1010
www.ti.com
SLAS696 – DECEMBER 2010
TERMINAL FUNCTIONS
TYPE
NAME
NO.
I/O
DESCRIPTION
(A/D)
DVSS
1
-
-
Supply voltage (GND connection)
AC_DETECT
Analog input voltage that is used to detect the presence of wireless power
transmission. AC_DETECT is the voltage at the AC2 switching node in the EVM
2
I
A
schematic [see bq25046EVM-687 User’s Guide (SLVU420)]. If the wireless power
transmission is not present during the MSP430BQ1010 power-up routine, the
device is reset.
COMM_DRIVE
Communication control. Communicates with the wireless transmitter by varying
3
O
D
the reflected impedance.
NC
4
-
-
Connect to VSS
RST
5
I
D
Device reset
VIN_DIV
Analog input voltage that represents 6:1 divided rectifier output voltage. See
6
I
A
bq25046EVM-687 User’s Guide (SLVU420) for more details on the 6:1 divider.
ISET_SENSE
Analog input voltage for overcurrent detection. When the ISET_SENSE voltage
7
I
A
exceeds the overcurrent threshold, the MSP430BQ1010 disables the BQ25046
output and sends an end power transfer packet, message 0x05.
Reserved (VSS)
8
-
-
Reserved. Connect to VSS.
ADAPTER_DETECT
External adapter voltage measurement. External adapter refers to another host
charging the battery. Use a 6:1 divider from the adapter voltage. When the
9
I
A
ADAPTER_DETECT voltage exceeds the VADAPTER-DETECT threshold, the
MSP430BQ1010 disables the BQ25046 output and sends an end power transfer
packet, message 0x01.
NC
10
-
-
Connect to VSS
BQ25046_EN1
BQ25046 current limit configuration pins. See the EN1 and EN2 Input table in the
11
O
D
BQ25046 datasheet (SLUSA83).
BQ25046_EN2
12
O
D
NC
13
-
-
Connect to VSS
NC
14
-
-
Connect to VSS
NC
15
-
-
Connect to VSS
MIN_LOAD
Provides additional load during minimum-load conditions to improve the stability of
the wireless control loop. When a minimum-load condition is detected (that is,
16
O
D
when the BQ25046 output current is less than VISET_SCALE_MIN-
LOAD_LO_THRESHOLD) the MIN_LOAD pin is set high. When the output current
exceeds VISET_SCALE_MIN-LOAD_HI_THRESHOLD, the pin is reset.
NC
17
-
-
Connect to VSS
ISET_SCALE
Analog input voltage that represents BQ25046 output current. Connect a 470-
Ω
resistor between this pin and ground. This pin can be tied directly to the ISET pin
on the BQ25046 to achieve a output current limit of VOVER_CURRENT_THRESHOLD. If
18
I
A
a lower BQ25046 current limit is desired, a second resistor can be connected from
this pin to the ISET pin on the BQ25046. The transimpedance gain at this pin is
1.31 V/A. See the bq25046EVM-687 User’s Guide (SLVU420) for more details on
choosing values for the BQ25046 ISET resistor.
NC
19
-
-
Connect to VSS
NC
20
-
-
Connect to VSS
Reserved (DVCC)
21
I
D
Reserved. Connect to DVCC.
WIRELESS_DISABLE
Connecting this pin to DVCC disables wireless power transfer. When
22
I
D
WIRELESS_DISABLE is pulled to DVCC, the MSP430BQ1010 disables the
BQ25046 output and sends an end power transfer packet, message 0x03.
NC
23
-
-
Connect to VSS
NC
24
-
-
Connect to VSS
BQ25046_OUT_ENABLE
Enables the wireless charging path. The wireless charging output is combined by
a logical OR with the ADAPTER_DETECT function. During the MSP430BQ1010
25
O
D
power-up routine, this pin is set high to enable the BQ25046 output, only if no
external adapter is detected.
Copyright © 2010, Texas Instruments Incorporated
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9
Product Folder Link(s): MSP430BQ1010


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