Doc No. TA4-EA-06234
Revision. 3
Product Standards
NN32251A
http://www.semicon.panasonic.co.jp/en/
INTEGRATED WIRELESS POWER SUPPLY TRANSMITTER,
Qi (WIRELESS POWER CONSORTIUM) COMPLIANT
FEATURES
DESCRIPTION
Integrated wireless power transmitter controller
WPC Ver. 1.1 ready
MCU embedded
Half-bridge gate driver ： 4ch
(full-bridge gate driver ： 2ch also configurable)
Single-coil (Type A11) supported
Expanded free positioning using multi-coils up to 4 coils
(Type A6)
Highly accurate voltage and current monitor for inverters
Output controlled by frequency or duty, defined in Qi.
ASK demodulation for both current and voltage signals
(Qi compliant)
Input voltage range : VADP, VINV : 4.6 to 19.5V
Supports Under Voltage Lockout , Thermal Shutdown,
Over Current Detection
Short-circuit protection at inverter output
Temperature Detecting Circuit ： 3ch
LED indicator ： 2ch
package ： 64 pins HQFP
(size : 12mm 12mm)
NN32251A is a wireless power system controller IC
which is compliant with Qi version 1.1 of the System
Description Wireless Power Transfer, Volume 1 for Low
Power, defined by Wireless Power Consortium.
NN32251A is a controller IC of a power transmitter (Tx)
which can supply power to any Qi-compliant wireless
chargers.
Power transmission of over 5W is also available with the
combination of AN32258A used for a receiver (Rx) .
APPLICATIONS
・WPC-compliant wireless charger
Wireless Power System
Wireless Power
VIN
OUT
Cp
Cs
Cd
TX
Coil
Co
RX
Coil
Rectifier
NN32251A
Tx Inverter
VRECT
IOUT
Charger
+
AN32258A
Control
IC
Receiver (Rx)
Transmitter (Tx)
Communication
Page 1 of 30
Established : 2014-01-27
Revised
: 2014-03-10
Doc No. TA4-EA-06234
Revision. 3
Product Standards
NN32251A
DELIVERY INFORMATION
Order Number
Package
Output Supply
Minimum Quantity
NN32251A-VT
64 pin HQFP (12×12 mm）
Tray
500pcs
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
Rating
Unit
VVADP
21
V
VVINV
21
V
Output current
IVADP
—
A
*1
Operating ambient temperature
Topr
– 30 to + 85
C
*2
Operating junction temperature
Tj
－40 to +125
C
*2
Tstg
– 55 to + 125
C
*2
VSCDET1, VSCDET2, VSCDET3,
VSCDET4, VCFB1, VCFB2, VVFB
– 0.3 to 21
V
*1
VTEST3, VSELLED1, VTYP1, VSELLED2,
VNCO1, VNCO2, VPWR, VSELFOD1,
VSELFOD2,
VTEST4, VFWMD, VTH1, VTH2, VTH3,
– 0.3 to 7
V
*1
VTEST2, VENB, VVMODIN, VCMODIN,
VCSIN1, VCSIN2, VTEST, VSMBC,
VSMBD,
– 0.3 to 4.6
V
*1
HBM (Human Body Model)
2
kV
—
CDM (Charged Device Model)
1
kV
—
Supply voltage
Storage temperature
Input voltage range
ESD
Notes
*1
Note) This product may sustain permanent damage if the actual condition is higher than the absolute maximum rating
stated above. This rating is the maximum stress, and device will not be guaranteed to operate in case it is higher
than our stated range. When exposed to the absolute maximum rating for a long time, the reliability of the product
may be affected.
No voltage or current input is allowed for the pins not listed above. All voltage ratings are relative to the ground
level, which is referred to as GNDMC, GNDMOD, GNDA1, GNDA3, GNDP1, and GNDP2.
*1:The values are under the condition not exceeding the above absolute maximum ratings and the power dissipation.
*2:Except for the power dissipation, operating ambient temperature, and storage temperature, all ratings are for Ta = 25 C.
Page 2 of 30
Established : 2014-01-27
Revised
: 2014-03-10
Doc No. TA4-EA-06234
Revision. 3
Product Standards
NN32251A
POWER DISSIPATION RATING
PACKAGE
j-a
j-C
PD
(Ta = 25 C)
PD
(Ta = 85 C)
Notes
HQFP64
25.5 C / W
1.05 C /W
4.90 W
2.55 W
*1
Note). For the actual usage, please refer to the PD-Ta characteristics diagram in the package specification, and follow
the power supply voltage, load and ambient temperature conditions to ensure that there is enough margin and
the thermal design does not exceed the allowable value.
*1 : glass epoxy board (4 layers) [50 50 0.8 t (mm)]
CAUTION
Although this device has limited built-in ESD protection circuit, permanent damage may occur on it.
Therefore, proper ESD precautions are recommended to avoid electrostatic damage to the MOS gates
RECOMMENDED OPERATING CONDITIONS
Parameter
Supply voltage range
Pin Name
Min.
Typ.
Max.
Unit
Notes
VVADP, VVINV
4.6
12
19.5
V
*2
Note) *2 :The values are under the condition not exceeding the above absolute maximum ratings and the power dissipation.
Page 3 of 30
Established : 2014-01-27
Revised
: 2014-03-10
Doc No. TA4-EA-06234
Revision. 3
Product Standards
NN32251A
ELECRTRICAL CHARACTERISTICS
VVADP = 12 V, VVINV = 12 V, Ta = 25 C 2 C unless otherwise noted.
Parameter
Symbol
Condition
Min
Limits
Typ
Max
Unit Note
Current Consumption
Quiescent current
ISTBY
ENB=L
6.48
8.10
9.72
mA
Operating current
IOPR
ENB=H
18.0
22.6
27.0
mA
Half-Bridge Gate Driver
Minimum switching frequency
FSWMIN
108
110
112
kHz
Maximum switching frequency
FSWMAX
200
205
210
kHz
Accuracy of switching frequency
FSWCA
—
—
0.4
kHz
Minimum duty
DRMIN
—
—
10
%
Maximum duty
DRMAX
50
—
—
%
VVINV
-0.3
—
—
V
High-side Output – H level
VHSH
Isource=1mA
High-side Output – L level
VHSL
Isink=1mA
—
—
VVINV
-4.7
V
Low-side Output – H level
VLSH
Isource=1mA
3.8
—
—
V
Low-side Output – L level
VLSL
Isink=1mA
—
—
0.2
V
VOUT41
Iout=20mA
4.0
4.1
4.2
V
VOUT33
Iout=1mA
3.2
3.3
3.4
V
VOUT18
Iout=1mA
1.7
1.8
1.9
V
LDO4.1V
Output voltage
LDO3.3V (for internal circuit)
Output voltage
LDO1.8V (for internal circuit)
Output voltage
Page 4 of 30
Established : 2014-01-27
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Doc No. TA4-EA-06234
Revision. 3
Product Standards
NN32251A
ELECRTRICAL CHARACTERISTICS (Continued)
VVADP = 12 V, VVINV = 12 V, Ta = 25 C 2 C unless otherwise noted.
Parameter
Symbol
Condition
Limits
Unit Note
Min
Typ
Max
3.85
4.00
4.15
V
0.70
0.75
0.80
V
—
—
0.3
V
Under-Voltage Lock-Out (UVLO)
Under-voltage lock-out
Hysteresis on UVLO
VUVLOR
VUVLOHYS
Hysteresis of UVLO
detection and release
LED Driver
Saturation voltage
VLEDSAT
Iout=10mA
ENB Input Voltage
“H” input threshold
VIHENB
2.6
—
—
V
“L” input threshold
VILENB
—
—
0.6
V
TYP1, SELLED2, NCO1, NCO2, PWR, SELFOD1, SELFOD2, SELLED1 Input Voltage
“H” input threshold
VIHTYP1
3.3
—
—
V
“L” input threshold
VILTYP1
—
—
0.8
V
Page 5 of 30
Established : 2014-01-27
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Doc No. TA4-EA-06234
Revision. 3
Product Standards
NN32251A
ELECRTRICAL CHARACTERISTICS (Continued)
VVADP = 12 V, VVINV = 12 V, Ta = 25 C 2 C unless otherwise noted.
Parameter
Symbol
Condition
Limits
Min
Typ
Max
Unit Note
ASK demodulation
Current demodulation input
threshold
ITHMOD
—
5
—
mA
*1
Voltage demodulation input
threshold
VTHMOD
—
50
—
mV
*1
Inverter Short-Circuit Protection (SCP)
Detection time
VOCPR
Time till oscillation stops
—
100
—
us
Detection threshold
TSDR
65 C, with the
recommended parts
—
0.648
—
V
*1
Release threshold
TSDF
65 C, with the
recommended parts
—
0.727
—
V
*1
—
0.8
—
A
*1
Thermal Shutdown (TSD)
Over-Current Protection (OCP)
Detected Current 1-1
IOCp11
Type A11, R4=25mohm
VADP=5V, VVINV=5V
Before power transfer *2
Detected Current 1-2
IOCp12
Type A11, R4=25mohm
VADP=5V, VVINV=5V
At power transfer *3
—
3.0
—
A
*1
Detected Current 2-1
IOCp21
Type A6, R4=50mohm
Before power transfer *2
—
0.4
—
A
*1
Detected Current 2-2
IOCp22
Type A6, R4=50mohm
At power transfer *3
—
1.5
—
A
*1
IOCp31
Type A6, High power
PWR pin (No.9): LDO41V
R4=50mohm
Before power transfer *2
—
0.4
—
A
*1
IOCp32
Type A6, High power
PWR pin (No.9): LDO41V
R4=50mohm
At power transfer *3
—
1.9
—
A
*1
Detected Current 3-1
Detected Current 3-2
Note)
*1 : Designed typical values
*2: Conditions at Selection, Ping, and ID & Configuration phases. Refer to Power Transfer Phases section for more details.
*3: Conditions at Power Transfer phase. Refer to Power Transfer Phases section for more details.
Page 6 of 30
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Doc No. TA4-EA-06234
Revision. 3
Product Standards
NN32251A
Pin Layout
SCDET4
SCDET3
PD4L
PD4H
PD3L
PD3H
GNDP2
VINV
PD2L
PD2H
PD1L
PD1H
SCDET2
SCDET1
LDO33V
VFIL4
Top View
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
HG1
VADP
LG1
GNDP1
HG2
TEST
LG2
CFB1
CFB2
LED1
LED2
GNDA3
VFB
SMBC
SMBD
LDO41V
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
VFIL3
GNDA1
CSIN1
CSIN2
CFIL1
CFIL2
CSOUT
CMODIN
GNDMOD
VMODIN
TH1
TH2
TH3
VFIL1
VFIL2
VREF
TEST4
FWMD
TEST2
ENB
PLLFIL
NCO1
NCO2
PWR
SELFOD1
SELFOD2
TYP1
SELLED2
LDO18V
GNDMC
TEST3
SELLED1
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Page 7 of 30
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Doc No. TA4-EA-06234
Revision. 3
Product Standards
NN32251A
PIN FUNCTIONS
Pin
Name
I/O
Function
1
LDO18V
2
GNDMC
GND
Ground for MCU
3
TEST3
Input
Test pin 3
Connect to GND. Panasonic uses this
pin for test purposes only.
4
SELLED1
Input
Select LED pattern 1
Refer to “LED Indicator” in Functions
section.
5
TYP1
Input
Select transmitter type 1
Refer to the Pin Settings in
FUNCTIONS section.
6
SELLED2
Input
Select LED pattern 2
Refer to “LED Indicator” in Functions
section.
7
NCO1
Input
Select the number of coils 1
Refer to the Pin Settings in
FUNCTIONS section.
8
NCO2
Input
Select the number of coils 2
Refer to the Pin Settings in
FUNCTIONS section.
9
PWR
Input
Select power to transmit
Connect to GND for regular power
transmission of 5W, and connect to
LDO41V for the high power mode.
10
SELFOD1
Input
Select threshold value of FOD 1
Refer to the Pin Settings in
FUNCTIONS section.
11
SELFOD2
Input
Select threshold value of FOD 2
Refer to the Pin Settings in
FUNCTIONS section.
12
TEST4
Input
Test pin 4
Connect to GND. Panasonic uses this
pin for test purposes only.
13
FWMD
Input
Test mode
Connect to GND. Panasonic uses this
pin for test purposes only.
14
TEST2
Input
Test pin 2
Connect to GND. Panasonic uses this
pin for test purposes only.
System enable
Input a GND pulse for over 1ms to
reset NN32251A. Normally, connect
this pin to LDO33V for continuous
operations. Refer to “Enable / Reset”
in Functions section.
Output 1.8V regulator output for MCU
Input
Description
Used for the internal MCU. Connect a
capacitor of 1uF.
15
ENB
16
PLLFIL
Output PLL loop filter
Connect a capacitor of 3900pF.
17
VREF
Output Reference Voltage
Connect a capacitor of 4.7uF.
Page 8 of 30
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Doc No. TA4-EA-06234
Revision. 3
Product Standards
NN32251A
PIN FUNCTIONS (Continued)
Pin
Name
18
VFIL2
Output Voltage detection active filter 2
Connect a capacitor of 1000pF.
19
VFIL1
Output Voltage detection active filter 1
Connect a capacitor 2200pF.
20
21
TH3
TH2
I/O
Input
Input
Function
Description
Thermistor voltage 3
Connect a thermistor, and place it
where temperature is measured.
Connect to LDO33V if a thermistor is
not connected.
Thermistor voltage 2
Connect a thermistor, and place it
where temperature is measured.
Connect to LDO33V if a thermistor is
not connected.
22
TH1
Input
Thermistor voltage 1
Connect a thermistor, and place it
where temperature is measured.
Connect to LDO33V if a thermistor is
not connected.
23
VMODIN
Input
ASK voltage demodulation
Input ASK voltage from Rx.
24
GNDMOD
GND
GND for demodulator
25
CMODIN
Input
ASK current demodulation
26
CSOUT
27
Input ASK current from Rx
Output Current sensor output for inverter
Connect a capacitor of 68000pF
between CMODIN and this pin.
CFIL2
Output Current detection active filter 2
Connect a capacitor of 1000pF.
28
CFIL1
Output Current detection active filter 1
Connect a capacitor of 3300pF.
29
CSIN2
Input
Current detection for inverter 2
30
CSIN1
Input
Current detection for inverter 1
31
GNDA1
GND
GND for analog circuit 1
32
VFIL3
Output Voltage detection active filter 3
Connect a capacitor of 3300pF.
33
VFIL4
Output Voltage detection active filter 4
Connect a capacitor of 1000pF.
34
LDO33V
Output 3.3V regulator output
Connect a capacitor of 1uF.
35
SCDET1
Input
Inverter short-circuit detection 1
Connect to the drain of first inverter
driven from PD1H and PD1L pins.
36
SCDET2
Input
Inverter short-circuit detection 2
Connect to the drain of second inverter
driven from PD2H and PD2L pins.
37
PD1H
Output High-side gate driver of inverter 1
Connect to the gate of first inverter
PMOS
38
PD1L
Output Low-side gate driver of inverter 1
Connect to the gate of first inverter
NMOS
39
PD2H
Output High-side gate driver of inverter 2
Connect to the gate of second inverter
PMOS
40
PD2L
Output Low-side gate driver of inverter 2
Connect to the gate of second inverter
NMOS
Connect a resistor of 25m ohm or 50m
ohm, between CSIN1 and CSIN2.
Page 9 of 30
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Doc No. TA4-EA-06234
Revision. 3
Product Standards
NN32251A
PIN FUNCTIONS (Continued)
Pin
Name
41
VINV
42
GNDP2
43
PD3H
Output High-side gate driver of inverter 3
Connect to the gate of third inverter
PMOS
44
PD3L
Output Low-side gate driver of inverter 3
Connect to the gate of third inverter
NMOS
45
PD4H
Output High-side gate driver of inverter 4
Connect to the gate of fourth inverter
PMOS
46
PD4L
Output Low-side gate driver of inverter 4
Connect to the gate of fourth inverter
NMOS
47
SCDET3
Input
Short-circuit detection 3
Connect to the drain of third inverter
driven from PD3H and PD3L pins.
48
SCDET4
Input
Short-circuit detection 4
Connect to the drain of fourth inverter
driven from PD4H and PD4L pins.
49
HG1
Output (Not used)
Leave this pin open
50
VADP
Power
AC adapter
Supply
Input an external voltage supply of 4.6V
to 19.5V.
51
LG1
Output (Not used)
Leave this pin open
52
GNDP1
53
HG2
54
TEST
55
LG2
56
CFB1
Input
(Not used)
Leave this pin open
57
CFB2
Input
(Not used)
Leave this pin open
58
59
LED1
LED2
I/O
Function
Power
Power for inverters
Supply
GND
GND
Connect to the source of PMOS of
each inverter.
GND for power 2
GND for power 1
Output (Not used)
Input
Description
Test pin
Output (Not used)
Leave this pin open
Connect to GND. Panasonic uses this
pin for test purposes only.
Leave this pin open
Output LED driver 1
This pin is internally connected to the
drain of NMOS to turn on an LED.
Refer to “LED Indicator” in
FUNCTIONS section for more details.
Output LED driver 2
This pin is internally connected to the
drain of NMOS to turn on an LED.
Refer to “LED Indicator” in
FUNCTIONS section for more details.
Page 10 of 30
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Doc No. TA4-EA-06234
Revision. 3
Product Standards
NN32251A
PIN FUNCTIONS (Continued)
Pin
Name
I/O
Function
Description
60
GNDA3
GND
GND for analog circuit 3
61
VFB
Input
(Not used)
62
SMBC
Input/
Clock for test mode
Output
Connect to GND. Panasonic uses this
pin for test purposes only.
63
SMBD
Input/
Data for test mode
Output
Connect to GND. Panasonic uses this
pin for test purposes only.
64
LDO41V
Output 4.1V regulator output
Connect a capacitor of 1uF. LED’s can
be connected to this pin.
Leave this pin open
Page 11 of 30
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PD2L
C30
C29
C28
C18
D3
Current Sense
Resistor
SCDET4
PD4L
PD4H
SCDET3
PD3L
PD3H
48
46
45
47
44
43
36
40
Short Circuit
Protection
Level Shifter
Dead Time
Controller
Channel
Selector
54
1
52
C8
1uF
LDO41V
Voltage
Regulator
Signal
1.8V
Demodulator
Temp.
Monitor
SMbus
I/F
Flash
Memory
21
22
24
18
19
23
25
26
27
28
29
30
CSOUT
CFIL2
CFIL1
CSIN2
C5
68000pF
3rd order
5kHz
LPF
Temperature
Measure
Register
8bits
MicroController
Clock
Serial
I/F
Band Gap Regulator
Reference
4.1V
C9
1uF
LDO33V
NCO2
NCO1
LDO41V
SMBC
SELLED1
3
2
TEST3
GNDMC
SMBD
63
62
4
51
SELLED2
6 TYP
7
8
10SELFOD1
PWR
9
11
SELFOD2
12
TEST4
13
14
TEST2
FWMD
ENB
15
ENB Control
3.3V:active
0V:reset
GNDA3
60
Optional
Thermistor
TH3
20
C3
C4
3300pF 1000pF
Current
Signal
Demodulator
12bits ADC
Inverter Voltage
Measure
PLL
105kHz-205kHz
0.4kHz step
Inverter Current
Measure
3rd order
5kHz
LPF
Channel Selection
Dead Time Control
Duty
Controller
10%-50%
Frequency
Control
LED1
SCDET2
Q8
39
56
PD2H
57
Half-Bridge
Gate Driver
61
35
38
Duty
Control
Serial
I/F
C10
4.7uF
CIRCUIT DIAGRAM
(Tx Type：A11 Single coil)
(0.1uF*4)
Q7
PD1L
CFB1
SCDET1
Q6
CFB2
37
VFB
PD1H
GNDP1
16
6.3uH
L2
A11
TEST
50
41
VADP
32
VINV
VFIL3
55
VFIL4
33
LG2
LDO33V
34
HG2 53
58
LED
Driver
59
Regulator
3.3V
LED2
3rd order
5kHz
LPF
D1
17
UVLO
R10
560
VREF
51
49
D2
R9
560
64
LG1
HG1
C11
1uF
LDO41V
LDO41V
Q5
C24 C42
10uF 10uF
PLLFIL
C14
C13
C12
C15 C23 C16 3300pF 1000pF 3900pF
10uF 10uF 0.01uF
Power Supply (5.0V)
Doc No. TA4-EA-06234
Revision. 3
Product Standards
NN32251A
TH2
R7 R14 R15
R11 R16 R17
R12
TH1
R13 R18 R19
R8
R6
LDO18V
GNDMOD
VFIL2
C7
1000pF
VFIL1
C6
2200pF
VMODIN
C20
2200pF
CMODIN
CSIN1
42
GNDP2
31
GNDA1
R4
25m
R2 1k
R3 10k
Notes) This block diagram is for explaining functions. Part of the block diagram may be omitted, or it may be simplified.
C19
0.01uF
Page 12 of 30
L2
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47
44
48
Short Circuit
Protection
Level Shifter
Dead Time
Controller
3rd order
5kHz
LPF
1
52
C28 0.068uF
C18 0.068uF
C8
1uF
LDO41V
Voltage
Regulator
Signal
1.8V
Demodulator
Temp.
Monitor
SMbus
I/F
22
24
18
19
23
25
26
27
28
29
30
CSOUT
CFIL2
CFIL1
CSIN2
C5
68000pF
3rd order
5kHz
LPF
Temperature
Measure
Flash
Memory
8bits
MicroController
Clock
Serial
I/F
21
C3
C4
3300pF 1000pF
Current
Signal
Demodulator
Inverter Current
Measure
12bits ADC
C9
1uF
Band Gap Regulator
Reference
4.1V
Register
Serial
I/F
C10
4.7uF
LDO33V
SMBC
3
2
TEST3
GNDMC
63
SMBD
62
4
SELLED1
51
LDO41V
NCO2
NCO1
SELLED2
6 TYP
7
8
10
SELFOD1
PWR
9
11
SELFOD2
12
TEST4
13
14
TEST2
FWMD
ENB
15
ENB Control
3.3V:active
0V:reset
GNDA3
60
Optional
Thermistor
TH3
20
Current Sense
Resistor
SCDET4
PD4L 46
PD4H 45
SCDET3
PD3L
43
36
Channel
Selector
Inverter Voltage
Measure
PLL
105kHz-205kHz
0.4kHz step
Frequency
Control
LED1
PD3H
SCDET2
40
Duty
Controller
10%-50%
Duty
Control
Channel Selection
Dead Time Control
54
PD2L
56
39
57
Half-Bridge
Gate Driver
61
PD2H
35
38
CFB1
SCDET1
CFB2
12.5uH
VFB
16
PD1L
GNDP1
37
TEST
50
PD1H
VADP
32
41
VFIL3
VINV
VFIL4
33
55
PLLFIL
LG2
LDO33V
34
HG2 53
58
LED
Driver
59
Regulator
3.3V
LED2
3rd order
5kHz
LPF
D1
17
UVLO
R10
560
VREF
51
49
D2
R9
560
64
LG1
HG1
C11
1uF
LDO41V
LDO41V
Q5
C24 C42
10uF 10uF
C14
C13
C12
C15 C23 C16 3300pF 1000pF 3900pF
10uF 10uF 0.01uF
Power Supply (12.0V)
Doc No. TA4-EA-06234
Revision. 3
Product Standards
NN32251A
CIRCUIT DIAGRAM (Continued)
(Tx Type：A6 Single coil)
TH2
R7 R14 R15
R11 R16 R17
R12
TH1
R13 R18 R19
R8
R6
LDO18V
GNDMOD
VFIL2
C7
1000pF
VFIL1
C6
2200pF
VMODIN
C20
2200pF
CMODIN
CSIN1
42
GNDP2
31
GNDA1
R4
50m
R3 39k
D3
R2 3.3k
Notes) This block diagram is for explaining functions. Part of the block diagram may be omitted, or it may be simplified.
C19
0.01uF
Page 13 of 30
L2
Established : 2014-01-27
Revised
: 2014-03-10
D3
C30 0.047uF
C25 0.1uF
D5
12.5uH
47
44
43
36
SCDET4
48
PD4L 46
PD4H 45
SCDET3
PD3L
PD3H
Short Circuit
Protection
Level Shifter
Dead Time
Controller
1
52
C32 0.068uF
C26 0.068uF
C8
1uF
LDO41V
Voltage
Regulator
Signal
1.8V
Demodulator
Temp.
Monitor
SMbus
I/F
22
24
18
19
23
25
26
27
28
29
30
CSOUT
CFIL2
CFIL1
CSIN2
C5
68000pF
3rd order
5kHz
LPF
Temperature
Measure
Flash
Memory
21
C3
C4
3300pF 1000pF
Inverter Voltage
Measure
12bits ADC
Current
Signal
Demodulator
Inverter Current
Measure
3rd order
5kHz
LPF
Channel Selection
Dead Time Control
Register
8bits
MicroController
Clock
Serial
I/F
Band Gap Regulator
Reference
4.1V
C9
1uF
LDO33V
LDO41V
SMBC
3
2
TEST3
GNDMC
63
SMBD
62
4
SELLED1
51
LDO41V
NCO1
SELLED2
6 TYP
7
8
10SELFOD1
PWR
9
NCO2
11
SELFOD2
12
TEST4
13
14
TEST2
FWMD
ENB
15
ENB Control
3.3V:active
0V:reset
GNDA3
60
Optional
Thermistor
TH3
20
Current Sense
Resistor
Q9
SCDET2
Channel
Selector
PLL
105kHz-205kHz
0.4kHz step
Frequency
Control
LED1
L4
11.5uH
C28 0.068uF
C18 0.068uF
40
54
PD2L
56
39
57
Half-Bridge
Gate Driver
61
PD2H
35
Duty
Controller
10%-50%
Duty
Control
Serial
I/F
C10
4.7uF
CIRCUIT DIAGRAM (Continued)
(Tx Type：A6 3-coil array)
L3
Q7
38
CFB1
SCDET1
CFB2
12.5uH
VFB
16
PD1L
GNDP1
37
TEST
50
PD1H
VADP
32
41
VFIL3
VINV
VFIL4
33
55
PLLFIL
LG2
LDO33V
34
HG2 53
58
LED
Driver
59
Regulator
3.3V
LED2
3rd order
5kHz
LPF
D1
17
UVLO
R10
560
VREF
51
49
D2
R9
560
64
LG1
HG1
C11
1uF
LDO41V
LDO41V
Q5
C24 C42
10uF 10uF
C14
C13
C12
C15 C23 C16 3300pF 1000pF 3900pF
10uF 10uF 0.01uF
Power Supply (12.0V)
Doc No. TA4-EA-06234
Revision. 3
Product Standards
NN32251A
TH2
R7 R14 R15
R11 R16 R17
R12
TH1
R13 R18 R19
R8
R6
LDO18V
GNDMOD
VFIL2
C7
1000pF
VFIL1
C6
2200pF
VMODIN
C20
2200pF
CMODIN
CSIN1
42
GNDP2
31
GNDA1
R4
50m
R2 3.3k
R3 39k
D7
Notes) This block diagram is for explaining functions. Part of the block diagram may be omitted, or it may be simplified.
C19
0.01uF
Page 14 of 30
Doc No. TA4-EA-06234
Revision. 3
Product Standards
NN32251A
Functions
NN32251A has the following functions.
No.
Function
1
Power Startup Condition
2
Power Transfer Phases
3
Enable / Reset
4
Power Stop and Resume Controls
5
Pin Settings
6
Transmitter Types
7
LED Indicator
8
Over Current Detection
9
Over Temperature Detection
10
High Power Mode
1. Power Startup Condition
The pins VADP (No.50) and VINV (No.41) must be shorted out, because inputting VINV before VADP may result in
breakage of NN32251A.
Follow the rise time of VADP and VINV as defined below.
VADP [V]
(shorted to VINV)
0.9 Ｘ VADP
0.1 Ｘ VADP
t[s]
τrise
Figure A-1. Rise time characteristics of VADP
Symbol
Rise time
τrise
Condition
(not tested at shipment)
min
typ
max
50
－
－
unit
us
This condition is based on the circuits described in Evaluation Results followed by this chapter.
Thorough evaluation will be required if the circuit is different.
Page 15 of 30
Established : 2014-01-27
Revised
: 2014-03-10
Doc No. TA4-EA-06234
Revision. 3
Product Standards
NN32251A
Functions (Continued)
2.Power Transfer Phases
NN32251A is compliant with Qi version 1.1 of the System Description Wireless Power Transfer, Volume 1 for Low
Power, defined by Wireless Power Consortium.
【At selection phase】
・VADP (Pin 50) ： Input 4.6 to 19.5V
・ENB (Pin 15) ： Connect LDO33V (Pin 34)
-Tx error detection*2
-Rx error detection
No response
Full-charge detected
(except End Power Transfer Code =0x01、0x07*1)
(End Power Transfer Code =0x01)
Rx moved
Over-temperature detected
Selection
Apply power signal
・Rx moved
・15 minutes passed
Temperature decreased
(∆5℃)
Temperature
Error
Power stopped
Error
Find Rx
・Unexpected packet
・Communication error
・Timeout
Over-temperature detected
Power stopped
Apply power signal
Error
Full charge
detected*2
・Timeout
Over-temperature detected
Power stopped
Apply power signal
(End Power Transfer Code =0x01)
・Unexpected packet
・Communication error
・Error detected*2
・Try four times
Full Charge
Ping
Signal Strength Packet
ID &
Configuration
Power transmission
established
・Unexpected packet
・Communication error
Full charge
(End Power Transfer Code =0x01)
Reconfigure
(End Power Transfer Code =0x07)
・Timeout
Over-temperature detected
Error detected*2
Power
Transfer
Full charge
(End Power Transfer Code =0x01)
*1: The phase does not change when 0x07 is received at Selection.
*2: Errors are detected by over-current protection foreign object detection, and short-circuit protection.
Figure A-2. State machine of power transfer phases
Page 16 of 30
Established : 2014-01-27
Revised
: 2014-03-10
Doc No. TA4-EA-06234
Revision. 3
Product Standards
NN32251A
Functions (Continued)
3. Enable / Reset
Controlling the ENB (Pin 15) can enable, stop, or reset NN32251A. Enable will start NN32251A from the
Select phase. Stop will shut down the entire system on NN32251A. Reset will enable NN32251A after sopping it.
The following figure describes the input requirements.
C11
1uF
LDO33V
Condition
Enable
34
Regulator
33V
ENB
Input to ENB pin
LDO33V
GND
LDO33V
15
Stop
GND
To system control
LDO33V
Reset
NN32251A
GND
Over 1ms
Figure A-3. External circuit to function ENB pin.
4. Power Stop and Resume Controls
NN32251A stops power transmission due to its own protections or control from Rx. The condition to resume
depends on what has stopped the power transmission.
Power-Stop Condition
phase Transition
By Rx
1
Full-charge detection
(End Power Transfer Code =0x01)
The phase goes to Full Charge and moves to Selection
by either removing the Rx or laying the Rx for over 15
minutes.
2
End Power Transfer packet of other
conditions than full-charge detection
The phase goes to Error and moves to Selection by
removing the Rx.
By Tx
3
Temperature detection
(Over 65℃)
The phase goes to Temperature Error and moves to
Selection when temperature becomes lower than 60℃.
4
Over current protection
5
Short-circuit protection
The phase goes to Error and moves to Selection by
removing the Rx.
Page 17 of 30
Established : 2014-01-27
Revised
: 2014-03-10
Doc No. TA4-EA-06234
Revision. 3
Product Standards
NN32251A
Functions (Continued)
5. Pin Settings
5-1. Transmitter Type
The pin TYP1 selects transmitter types defined by Wireless Power Consortium. A6 and A11 are selectable.
Connect the pins as the following table shows. The pins NCO1 and NCO2 set the number of coils to use when
the transmitter type of A6 is selected. The inverters must include a pair of H and L, such as PD1H and PD1L.
f
TYP1
NCO2
NCO1
number
5
8
7
Number
of Coils
Inverters to use
Note
Type A11 ( with full bridge)
FDS8958B
(Dual Pch&Nch MOSFET)
GND
GND
GND
GND
GND
LDO41V
GND
LDO41V
GND
GND
LDO41V
LDO41V
1
SIA445EDJ (Pch-MOSFET),
SIA400EDJ (Nch-MOSFET)
PD1H, PD1L
Panasonic uses these settings
for test purposes only
Type A6 ( with half bridge)
LDO41V
GND
GND
1
PD1H, PD1L
LDO41V
GND
LDO41V
2
PD1H, PD1L, PD2H,
PD2L
LDO41V
LDO41V
GND
3
PD1H, PD1L, PD2H,
PD2L
PD3H, PD3L,
4
PD1H, PD1L, PD2H,
PD2L
PD3H, PD3L, PD4H,
PD4L
LDO41V
LDO41V
LDO41V
FDS8958B
(Dual Pch&Nch MOSFET)
For the transmitter type A11, MOSFETs to use for the inverters determine FOD characteristics of NN32251A.
Therefore, pin settings depend on the device as depicted above.
5-2. High Power
Over 5W high power transfer is achievable using Panasonic Rx IC AN32258A. Connect the pin PWR to LDO41V
to activate this feature. Refer also to the High Power Mode section for more details.
Pin
name
PWR
number
9
High Power
GND
Inactive
LDO41V
Active
Page 18 of 30
Established : 2014-01-27
Revised
: 2014-03-10
Doc No. TA4-EA-06234
Revision. 3
Product Standards
NN32251A
Functions (Continued)
5. Pin Settings (Continued)
5-3. FOD Threshold
Threshold level of the foreign object protection, defined in WPC Ver.1.1, can be adjusted by pins
SELFOD1(No.10) and SELFOD2(No.11) as the next table depicts.
Pin Name
SELFOD2
SELFOD1
Pin Number
11
10
GND
GND
GND
LDO41V
Offset by -100mW from default value
LDO41V
GND
Offset by +100mW from default value
LDO41V
LDO41V
Offset by +200mW from default value
FOD Threshold
Default value
The FOD value will likely depend the coil and its drivers to be used. Consult with Panasonic support
for more details.
Page 19 of 30
Established : 2014-01-27
Revised
: 2014-03-10
Doc No. TA4-EA-06234
Revision. 3
Product Standards
NN32251A
Functions (Continued)
6.Transmitter Types
NN32251A supports the transmitter types of A6 and A11defined in Qi version 1.1 of the System Description
Wireless Power Transfer, Volume 1 for Low Power. The following table shows the detailed specification.
Tx Type
A6
A11
Number of
coils
One or more
Single
Alignment aid
・A marked Interface Surface
・A visual feedback display
・An audible or haptic feedback
free
Modulation
Method
Operating
Frequency
(fop)
resolution
Duty cycle
Frequency or duty
Frequency or duty
Min
initial
max
Min
initial
max
115kHz
175kHz
205kHz
110kHz
175kHz
205kHz
0.01×fop - 0.7kHz (115…175kHz)
0.015×fop - 1.58kHz (175…205kHz)
10%
50%
0.01×fop - 0.7kHz (115…175kHz)
0.015×fop - 1.58kHz (175…205kHz)
50%
10%
50%
resolution
0.1%
0.1%
Inverter
Voltage
12±5%V
5±5%V
Half-bridge
Full-bridge
VADP/VINV
Control
Configuration
50%
VADP/VINV
A6
Coil
NN32251A
Control
A11
Coil
NN32251A
※NN32251A has 4 inverters to drive up to 4
coils.
Find more detailed description from WPC homepage.
URL： http://www.wirelesspowerconsortium.com/
Page 20 of 30
Established : 2014-01-27
Revised
: 2014-03-10
Doc No. TA4-EA-06234
Revision. 3
Product Standards
NN32251A
Functions (Continued)
7. LED Indicator
NN32251A controls two LED’s, and the following colors are recommended to be used.
Pin Name
LED1
LED2
Number
No.58
No.59
LED Color
Red
Green
Combination of LED display can be adjusted by pins SELLED1(No.4) and SELLED2(No.6) as
the next table shows.
System Status
Pin Name
(Number)
Selection
LED
Pin
GND
GND
LDO41V
LDO41V
GND
LDO41V
LDO41V
Full Charge
Error
Temperature Error
Charge
Full Charge
Error
Charge
SELLED2 SELLED1
(No.6)
(No.4)
GND
Ping
ID & Configuration
Power Transfer
Standby
LED1
OFF
ON
OFF
Blink*1
LED2
OFF
OFF
ON
OFF
LED1
OFF
OFF
OFF
ON
LED2
OFF
Blink*1
ON
OFF
LED1
ON
OFF
OFF
ON
LED2
ON
Blink*1
ON
OFF
LED1
OFF
OFF
OFF
ON
LED2
OFF
ON
OFF
OFF
*1 Blinking frequency = 0.625Hz
The LED display pattern when the power is provided from AC adapter is shown below.
Power On form AC adaptor
Pin
LED display
0.5 sec
LED1
(RED)
LED2
(Green)
ON
0.5 sec
0.5 sec
OFF
ON
0.5 sec
OFF
ON
ON
When the supply voltage decreases, by such reasons as not-enough current from an AC adaptor,
the LED pattern in charge status starts and goes back to the above power-on sequence, and then
it repeats.
Page 21 of 30
Established : 2014-01-27
Revised
: 2014-03-10
Doc No. TA4-EA-06234
Revision. 3
Product Standards
NN32251A
Functions (Continued)
7. LED Indicator (Continued)
LDO41V
R9
R10
D2
D1
LED1
58
LED2
LED
59
LED
Driver
Control
Driver Control
ON
Low (ON)
OFF
High (OFF)
1.6 sec
NN32251A
SELLED1
SELLED2
4
Blink
6
0.8 sec
LDO41V
Figure A-4. LED Circuit Diagram
* LDO41V must be used for the LED power source for proper operation.
8.Over Current Detection
Current is monitored at inverters to detect over-current. A sense resistor must be connected between
pins CSIN1and CSIN2. The resistance value is 25mΩfor the transmitter type of A6 or 50mΩfor the
transmitter type of A11.
The current limit is defined depending on the power transfer phase as well as the transmitter type as
shown in the next table. The exact value may vary due to variance of the external resistor.
Over Current Value
Type
Selection / Ping /
ID & Configuration Phase
A6
0.4A
A11
0.8A
Power Transfer Phase
1.5A (Normal)
1.9A (High power)
3.0A
Page 22 of 30
Established : 2014-01-27
Revised
: 2014-03-10
Doc No. TA4-EA-06234
Revision. 3
Product Standards
NN32251A
Functions (Continued)
9. Over Temperature Protection
NN32251A has three pins (TH1, TH2, and TH3) to connect thermistors.
A thermistor (NXRT15XH103FA3A016 recommended) is inserted into R6, R8, or R12, and the detecting
temperatures are adjusted by the values of remaining resistors. Power transfer stops when a temperature
becomes over a specified value.
For example, when NXRT15XH103FA3A016 is used for the pin TH1, and power transfer needs to be
stopped over 65 ℃ and restarted under 60 ℃ (with ±2℃ accuracy), the following resistor values may be
used; R13: 10kohm±1%, R18: 10kohm±1%, and R19: 38.3kohm±1%.
The detecting voltages, then, will be 0.641V for stopping power transfer and 0.719V for restarting it.
In order to inactivate this function, connect the pins TH1, TH2, and TH3 to LDO33V.
NN32251A
NN32251A
12bits ADC
12bits ADC
Temp.
Monitor
21
20
TH3
LDO33V
TH1
22
TH2
20
TH3
LDO41V
21
TH2
TH1
22
Temp.
Monitor
R7 R14
R11 R16
R13 R18
R15
R12
R17
R19
R8
R6
(a) Active circuit
(b) The function is inactivated
図A-5. Over-Temperature Detection
Page 23 of 30
Established : 2014-01-27
Revised
: 2014-03-10
Doc No. TA4-EA-06234
Revision. 3
Product Standards
NN32251A
Functions (Continued)
10. High Power Mode
NN32251A is able to transmit power over 5W (high power) by using AN32258A as Rx.
Conditions:
- Transmitter Type: A6
- PWR (Pin 9): Connected to LDO41V
Refer to the following figure showing the phase “ID & Configuration” in high power system.
ID &
Configuration
Error detected
Full charge
(End Power Transfer Code =0x01)
AN32258A
Detected
No
Yes
Reconfigure
(End Power Transfer Code =0x07)
Power transmission
established
Error detected
High Power
Transfer
Normal Power
Transfer
Full charge
(End Power Transfer Code =0x01)
Power
Transfer
Figure A-6. Phase transition of high-power
transfer (extracted from Figure A-2)
Page 24 of 30
Established : 2014-01-27
Revised
: 2014-03-10
Doc No. TA4-EA-06234
Revision. 3
Product Standards
NN32251A
EVALUATION RESULTS
D1
59
58
VFIL4
18
16
IC1
33
19
23
NN32251A
32
25
26
27
C15
10uF
C23
10uF
C16
0.01uF
VFIL3
24
34
VADP
TEST
50
28
54
29
52
GNDP1
61
VFB
GNDMOD
VFIL2
C7
1000pF
VFIL1
C6
2200pF
VMODIN
C20
2200pF
CMODIN
CSOUT
CFIL2
CFIL1
CSIN2
CSIN1
GNDP2
42
57
GNDA1
31
48
46
Current Sense
Resistor
SCDET4
47
45
PD4L
PD4H
SCDET3
43
36
44
PD3L
PD3H
SCDET2
40
Q8
PD2H
PD2L
39
35
C30
C29
C28
C18
(0.1uF*4)
Q7
6.3uH
L2
A11
Q5
C24 C42
10uF 10uF
Q6
PD1L
SCDET1
38
37
PD1H
41
VINV
55
LG2
HG2 53
51
49
56
HG1
CFB1
30
LG1
CFB2
R6
LDO18V
1
LED1
R8
R13 R18 R19
C8
1uF
D2
R10
560
C11
1uF
C14
C13
C12
3300pF 1000pF 3900pF
TH1
22
LED2
PLLFIL
R12
R11 R16 R17
C3
C4
C5
3300pF 1000pF 68000pF
C10
4.7uF
17
R9
560
LDO41V
21
VREF
LDO33V
R7 R14 R15
TH2
LDO41V
C9
1uF
TH3
20
64
LDO41V
Power Supply (5.0V)
Optional
Thermistor
MODE
2
3
SMBD
63
SMBC
62
4
51
SELLED1
LDO41V
SELLED2
6 TYP
7
NCO2
NCO1
8
10
SELFOD1
PWR
9
SELFOD2
11
TEST4
13
12
LDO33V
TEST2
FWMD
14
ENB
15
ENB Control
3.3V:active
0V:reset
60
GNDA3
Conditions :
Tx Type: A11, Single coil
ADP (Pin 50): 5V input
ENB (Pin 15): Connected to LDO33V
TYP1(Pin 5) ：Connected to GND
PWR (Pin 9): Connected to GND
Rx：AN32258A evaluation board
GNDMC
Evaluation Circuit Diagram 1
R4
25m
R3 10k
D3
R2 1k
Figure B-1. Circuit diagram for type A11 with a single coil
C19
0.01uF
Page 25 of 30
Established : 2014-01-27
Revised
: 2014-03-10
Doc No. TA4-EA-06234
Revision. 3
Product Standards
NN32251A
TYPICAL CHARACTERISTICS
1. Power Efficiency [Type A11]
80
Efficiency [%]
70
60
50
40
30
20
10
0
0
0.2
0.4
0.6
0.8
1
IOUT [A]
Figure B-2. Power Efficiency with Transmitter Type A11
Page 26 of 30
Established : 2014-01-27
Revised
: 2014-03-10
Doc No. TA4-EA-06234
Revision. 3
Product Standards
NN32251A
EVALUATION RESULTS
Evaluation Circuit Diagram 2
58
VFIL4
16
IC1
33
19
23
NN32251A
32
25
26
27
C15
10uF
C23
10uF
VADP
TEST
50
28
54
29
52
GNDP1
61
VFB
GNDMOD
VFIL2
C7
1000pF
VFIL1
C6
2200pF
VMODIN
C20
2200pF
CMODIN
CSOUT
CFIL2
CFIL1
CSIN2
CSIN1
GNDP2
42
57
GNDA1
31
48
46
SCDET4
47
45
PD4L
PD4H
SCDET3
43
44
PD3L
PD3H
36
SCDET2
40
PD2L
39
PD2H
35
SCDET1
38
PD1L
37
PD1H
41
VINV
55
LG2
C28
C18
(0.068uF*2)
12.5uH
L2
A6
Q5
C24 C42
10uF 10uF
HG2 53
51
49
56
HG1
CFB1
30
LG1
CFB2
C8
1uF
18
C16
0.01uF
VFIL3
24
34
R6
LDO18V
1
LED1
R8
R13 R18 R19
C3
C4
C5
3300pF 1000pF 68000pF
D1
59
D2
R10
560
C11
1uF
C14
C13
C12
3300pF 1000pF 3900pF
TH1
22
LED2
PLLFIL
R12
R11 R16 R17
Current Sense
Resistor
C10
4.7uF
17
R9
560
LDO41V
21
VREF
LDO33V
R7 R14 R15
TH2
LDO41V
C9
1uF
TH3
20
64
LDO41V
Power Supply (12.0V)
Optional
Thermister
3
2
MODE
GNDMC
SMBD
63
SMBC
62
4
LDO41V
SELLED1
51
SELLED2
6 TYP
7
NCO2LDO41V
NCO1
8
SELFOD1
PWR
9
10
SELFOD2
11
TEST4
13
12
LDO33V
TEST2
FWMD
14
ENB
15
ENB Control
3.3V:active
0V:reset
60
GNDA3
Conditions :
Tx Type: A6, Single coil
ADP (Pin 50): 12V input
ENB (Pin 15): Connected to LDO33V
TYP1(Pin 5): Connected to LDO41V
PWR (Pin 9): Connected to LDO41V
Rx：AN32258A evaluation board with high-power mode activated
R4
50m
R3 39k
D3
R2 3.3k
図B-3. Circuit diagram for high power (type A6 with a single coil
C19
0.01uF
Page 27 of 30
Established : 2014-01-27
Revised
: 2014-03-10
Doc No. TA4-EA-06234
Revision. 3
Product Standards
NN32251A
TYPICAL CHARACTERISTICS
Efficiency [%]
2. Power Efficiency [High Power, Type A6]
80
70
60
50
40
30
20
10
0
0
500
1000
1500
2000
IOUT [mA]
Figure B-4. Power Efficiency with AN32258A, High Power,
and Transmitter Type A6
Page 28 of 30
Established : 2014-01-27
Revised
: 2014-03-10
Doc No. TA4-EA-06234
Revision. 3
Product Standards
NN32251A
PACKAGE INFORMATION
Package Code : HQFP064-P-1010C
Unit:mm
Body Material : Br/Sb Free Epoxy Resin
Lead Material : Cu Alloy
Lead Finish Method : Pd Plating
Page 29 of 30
Established : 2014-01-27
Revised
: 2014-03-10
Doc No. TA4-EA-06234
Revision. 3
Product Standards
NN32251A
IMPORTANT NOTICE
1. When using the IC for new models, verify the safety including the long-term reliability for each product.
2. When the application system is designed by using this IC, please confirm the notes in this book.
Please read the notes to descriptions and the usage notes in the book.
3. This IC is intended to be used for general electronic equipment.
Consult our sales staff in advance for information on the following applications: Special applications in which exceptional
quality and reliability are required, or if the failure or malfunction of this IC may directly jeopardize life or harm the human body.
Any applications other than the standard applications intended.
(1) Space appliance (such as artificial satellite, and rocket)
(2) Traffic control equipment (such as for automotive, airplane, train, and ship)
(3) Medical equipment for life support
(4) Submarine transponder
(5) Control equipment for power plant
(6) Disaster prevention and security device
(7) Weapon
(8) Others : Applications of which reliability equivalent to (1) to (7) is required
Our company shall not be held responsible for any damage incurred as a result of or in connection with the IC being used for
any special application, unless our company agrees to the use of such special application.
However, for the IC which we designate as products for automotive use, it is possible to be used for automotive.
4. This IC is neither designed nor intended for use in automotive applications or environments unless the IC is designated by our
company to be used in automotive applications.
Our company shall not be held responsible for any damage incurred by customers or any third party as a result of or in
connection with the IC being used in automotive application, unless our company agrees to such application in this book.
5. Please use this IC in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled
substances, including without limitation, the EU RoHS Directive. Our company shall not be held responsible for any damage
incurred as a result of our IC being used by our customers, not complying with the applicable laws and regulations.
6. Pay attention to the direction of the IC. When mounting it in the wrong direction onto the PCB (printed-circuit-board),
it might be damaged.
7. Pay attention in the PCB (printed-circuit-board) pattern layout in order to prevent damage due to short circuit between pins.
In addition, refer to the Pin Description for the pin configuration.
8. Perform visual inspection on the PCB before applying power, otherwise damage might happen due to problems such as
solder-bridge between the pins of the IC. Also, perform full technical verification on the assembly quality, because the same
damage possibly can happen due to conductive substances, such as solder ball, that adhere to the IC during transportation.
9. Take notice in the use of this IC that it might be damaged when an abnormal state occurs such as output pin-VCC short
(Power supply fault), output pin-GND short (Ground fault), or output-to-output-pin short (load short). Safety measures such as
installation of fuses are recommended because the extent of the above-mentioned damage will depend on the current
capability of the power supply.
10. The protection circuit is for maintaining safety against abnormal operation. Therefore, the protection circuit should not work
during normal operation.
Especially for the thermal protection circuit, if the area of safe operation or the absolute maximum rating is momentarily
exceeded due to output pin to VCC short (Power supply fault), or output pin to GND short (Ground fault), the IC might be
damaged before the thermal protection circuit could operate.
11. Unless specified in the product specifications, make sure that negative voltage or excessive voltage are not applied to the
pins because the IC might be damaged, which could happen due to negative voltage or excessive voltage generated during
the ON and OFF timing when the inductive load of a motor coil or actuator coils of optical pick-up is being driven.
12. Verify the risks which might be caused by the malfunctions of external components.
Page 30 of 30
Established : 2014-01-27
Revised
: 2014-03-10
Request for your special attention and precautions
in using the technical information and semiconductors described in this book
(1) If any of the products or technical information described in this book is to be exported or provided to non-residents, the
laws and regulations of the exporting country, especially, those with regard to security export control, must be observed.
(2) The technical information described in this book is intended only to show the main characteristics and application circuit
examples of the products. No license is granted in and to any intellectual property right or other right owned by
Panasonic Corporation or any other company. Therefore, no responsibility is assumed by our company as to the
infringement upon any such right owned by any other company which may arise as a result of the use of technical
information de-scribed in this book.
(3) The products described in this book are intended to be used for general applications (such as office equipment,
communications equipment, measuring instruments and household appliances), or for specific applications as expressly
stated in this book.
Please consult with our sales staff in advance for information on the following applications, moreover please exchange
documents separately on terms of use etc.: Special applications (such as for in-vehicle equipment, airplanes, aerospace,
automotive equipment, traffic signaling equipment, combustion equipment, medical equipment and safety devices) in
which exceptional quality and reliability are required, or if the failure or malfunction of the products may directly
jeopardize life or harm the human body.
Unless exchanging documents on terms of use etc. in advance, it is to be understood that our company shall not be held
responsible for any damage incurred as a result of or in connection with your using the products described in this book
for any special application.
(4) The products and product specifications described in this book are subject to change without notice for modification
and/or improvement. At the final stage of your design, purchasing, or use of the products, therefore, ask for the most upto-date Product Standards in advance to make sure that the latest specifications satisfy your requirements.
(5) When designing your equipment, comply with the range of absolute maximum rating and the guaranteed operating
conditions (operating power supply voltage and operating environment etc.). Especially, please be careful not to exceed
the range of absolute maximum rating on the transient state, such as power-on, power-off and mode-switching. Otherwise, we will not be liable for any defect which may arise later in your equipment.
Even when the products are used within the guaranteed values, take into the consideration of incidence of break down
and failure mode, possible to occur to semiconductor products. Measures on the systems such as redundant design,
arresting the spread of fire or preventing glitch are recommended in order to prevent physical injury, fire, social damages,
for example, by using the products.
(6) Comply with the instructions for use in order to prevent breakdown and characteristics change due to external factors
(ESD, EOS, thermal stress and mechanical stress) at the time of handling, mounting or at customer's process. We do
not guarantee quality for disassembled products or the product re-mounted after removing from the mounting board.
When using products for which damp-proof packing is required, satisfy the conditions, such as shelf life and the elapsed
time since first opening the packages.
(7) When reselling products described in this book to other companies without our permission and receiving any claim of
request from the resale destination, please understand that customers will bear the burden.
(8) This book may be not reprinted or reproduced whether wholly or partially, without the prior written permission of our
company.
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