ETC AT5801

AT5801
Preliminary
4-Channel driver + Power Controller
Pin Assignments
10F-1, No.55, Tung Kuang Road, Hsinchu, Taiwan, R.O.C.
Tel: 886-3-575-3058
Fax: 886-3-575-3015
3
Email: [email protected]
http://www.aimtron.com.tw
01/08/05
AT5801
Preliminary
4-Channel driver + Power Controller
Absolute maximum ratings (Ta = 25oC)
Parameter
Supply voltage
Driver output current
Power dissipation
Operating temperature range
Storage temperature range
﹡Derating is done 5mW/
Symbol
VCC
Io
Pd
Topr
Tstg
Limits
13.5
500
625*
0~+80
-55~+150
unit
V
mA
mW
o
C
o
C
o
C for operation above Ta=25oC.
Recommended operating conditions (Ta = 25oC)
Parameter
Control circuit power supply voltage
Pre-driver power supply voltage
H-bridge power supply voltage
Power unit power supply voltage
Charging circuit power supply voltage
Ambient temperature
Symbol
VSYS1
VSYS2
HVCC
BATT
CHGVCC
Ta
Min.
2.7
2.7
1.5
3.0
0
Typ.
3.2
3.2
PWM
2.4
4.5
25
Max.
5.5
5.5
BATT
8.0
8.0
70
unit
V
V
V
V
V
o
C
Electrical characteristics
(Unless specified particular, Ta = 25oC, BATT=2.4V, VSYS1= VSYS2=3.2V, VREF=1.6V, CHGVCC=0V, CLK=88.2KHz )
Parameter
Symbol Min.
Typ.
Max.
Unit
Conditions
-
0
3
μA
BATT=9V
VSYS1=VSYS2=Vref=0V
-
2.5
4.0
mA
HVcc=0.45V, MUTE34=3.2V
-
4.7
6.4
mA
HVcc=0.45
MUTE34=3.2V, EI=0V
-
4.1
5.5
mA
HVcc=0.45V, MUTE34=3.2V
-
0.65
2.0
mA
CHGVcc=4.5V, ROUT=OPEN
Total circuit
BATT stand-by current
IST
BATT supply current
IBAT
at no-load
VSYS1 supply current
ISYS1
at no-load
VSYS2 supply current
ISYS2
at no-load
CHGVCC supply current
I
at no-load CGVCC
H-bridge driver section
Voltage gain (CH1、3、4)
(CH2)
Gain error by polarity
IN pin
(CH1、3、4)
Input resistance (CH2)
GVC134
GVC2
ΔGvc
RIN134
RIN2
12
21.5
-2
9
6
14
23.5
0
11
7.5
16
24.5
2
13
9
dB
dB
dB
kΩ
kΩ
Maximum output voltage
VOUT
1.9
2.1
-
V
VSATL
-
240
400
mV
IO=-300mA、IN=0 and 3.2V
VSATU
-
240
400
mV
IO=300mA、IN=0 and 3.2V
Lower transistor
saturated voltage
Upper transistor
saturated voltage
10F-1, No.55, Tung Kuang Road, Hsinchu, Taiwan, R.O.C.
Tel: 886-3-575-3058
Fax: 886-3-575-3015
4
IN=1.7 and 1.8V
RL=8Ω、HVCC=BATT=4V、
IN=0-3.2V
Email: [email protected]
http://www.aimtron.com.tw
01/08/05
AT5801
Preliminary
4-Channel driver + Power Controller
0
0
0
0
8
50
130
10
mV
mV
mV
mV
-
-
V
IN1=1.8V
-
0.8
V
IN1=1.8V
-
-
V
IN2=1.8V
-
0.8
V
IN2=1.8V
-
0.8
V
IN3= IN4=1.8V
-
-
V
IN3= IN4=1.8V
-
-
V
IN1=IN2=IN3=IN4=1.8V
-
0.8
V
IN1= IN2=IN3=IN4=1.8V
7
10
mA
13
0.45
17
0.55
mA
V
-
0
5
1/60
1/50
1/40
3.05
3.20
3.35
V
1.4
-
1.6
-
-
0.3
V
V
-
6
12
0
10
20
0.1
16
32
V EI=1.3V
μA EI=0.7V
μA EI=1.3V, OFF=0V
12
20
32
μA EI=1.3V, BATT=9.5V
175
220
265
kΩ
1.10
1.20
1.30
V
EI=0.7V, CT=0V
8.0
8.4
9.0
V
BSEN pin voltage
0.78
0.98
1.13
V
BATT=CT=1.5V, IO=-2mA,
VSYS1= VSYS2=0V, at start
-8
Input offset voltage
VOI
Output
(CH1、3、4) VOO134 -50
offset voltage
(CH2) VOO2 -130
-10
Dead zone
VDB
BRAKE1 ON
VBRON
2.0
threshold voltage
BRAKE1 OFF
-
VBROFF
threshold voltage
MUTE2 ON
VM2ON
2.0
threshold voltage
MUTE2 OFF
-
VM2OFF
threshold voltage
MUTE34 ON
-
VM34ON
threshold voltage
MUTE2 OFF
VM34OFF 2.0
threshold voltage
VREF ON
VrefON 1.2
threshold voltage
VREF OFF
VrefOFF -
threshold voltage
BRAKE1
IBRAKE1
4
brake current
PWM power supply driving section
PSW sink current
IPSW
10
HVCC level shift voltage VSHIF
0.35
HVCC leak current
IHLK
PWM amplifier
GPWM
transfer gain
DC/DC converter section
(Error amplifier section)
VSYS1 pin
VSITH
threshold voltage
EO pin output voltage H VEOH
EO pin output voltage L VEOL
(Short-circuit protection)
SPRT pin voltage(normal) VSPR
SPRT pin current 1 EO=H ISPR1
SPRT pin current 2 EO=L ISPR2
SPRT pin current 3
ISPR3
(over-voltage)
SPRT pin impedance
RSPR
SPRT pin
VSPTH
threshold voltage
Over-voltage
VHVPR
protection detect
(Transistor driving section)
SW pin
VSW1H
output voltage 1H
Vref=IN=1.6V
BRAKE1 pin
The current
Difference between “H” and “L”
IN1=2.1V
IN1=1.8V,HVCC-OUT1F
HVCC=9V
μA
VSYS1= VSYS2=BATT=0V
1/kΩ IN1=1.8V, HVCC=1.2~1.4V
10F-1, No.55, Tung Kuang Road, Hsinchu, Taiwan, R.O.C.
Tel: 886-3-575-3058
Fax: 886-3-575-3015
5
EI=0.7V, IO=-100μA
EI=1.3V, IO=100μA
Email: [email protected]
http://www.aimtron.com.tw
01/08/05
AT5801
Preliminary
4-Channel driver + Power Controller
SW pin
output voltage 2H
SW pin
output voltage 2L
SW pin
oscillating frequency 1
SW pin
oscillating frequency 2
SW pin
oscillating frequency 3
SW pin
minimum pulse width
Pulse duty at start
Max. pulse duty
at self-running
Max. pulse duty at CLK
synchronization
(Dead time section)
DEAD pin impedance
DEAD pin output voltage
(Interface section)
OFF pin
threshold voltage
OFF pin bias current
START pin ON
threshold voltage
START pin OFF
threshold voltage
START pin bias current
CLK pin
threshold voltage H
CLK pin
threshold voltage L
CLK pin bias current
CT=0V, IO=-10mA,
EI=0.7V, SPRT=0V
CT=2V, IO=10mA,
VSW2H
1.0
1.50
-
V
VSW2L
-
0.3
0.45
V
fSW1
80
100
150
KHz
fSW2
60
70
82
KHz CT=470pF, CLK=0V
fSW3
-
88.2
-
KHz CT=470pF
TSWMIN
0.01
-
0.6
μsec CT=470pF, EO=0.5~0.7V sweep
DSW1
40
50
60
﹪
CT=470pF, VSYS1= VSYS2=0V
DSW2
70
80
90
﹪
EI=0.7V, CT=470pF, CLK=0V
DSW3
65
75
85
﹪
EI=0.7V, CT=470pF
RDEAD
VDEAD
52
0.78
65
0.88
78
0.98
kΩ
V
VOFTH
-
-
IOFF
75
95
VSTATH1
-
-
VSYS1
-2.0
115
BATT
-1.0
V
CT=470pF,
VSYS1= VSYS2=0V, at start
EI=1.3V
ΜA OFF=0V
V
VSYS1= VSYS2=0V, CT=2V
V
VSYS1= VSYS2=0V, CT=2V
-
-
ISTART
BATT
-0.3
13
16
19
VCLKTHH
2.0
-
-
V
VCLKTHL
-
-
0.8
V
ICLK
-
-
10
VSTMM
2.3
2.5
2.7
V
130
200
300
mV
1.63
1.83
2.03
V
2.1
1.7
2.2
1.8
2.3
1.9
V
V
25
50
100
mV
VSEL=0V
25
50
100
mV
ISEL=-2μA
-
-
0.5
V
-
-
1.0
VSTATH2
μA START=0V
μA CLK=3.2V
(Starter circuit section)
Starter switching voltage
Starter switching
VSNHS
hysteresis width
Discharge release voltage VDIS
(Empty detection section)
Empty detection voltage 1 VEMPT1
Empty detection voltage 2 VEMPT2
Empty detection
VEMHS1
hysteresis width 1
Empty detection
VEMHS2
hysteresis width 2
EMP pin output voltage
VEMP
EMP pin
IEMPL
output leak current
VSYS1= VSYS2=0V~3.2V,
START=0V
START=0V
VSEL=0V
ISEL=-2μA
IO=1mA, BSEN=1V
μA BSEN=2.4V
10F-1, No.55, Tung Kuang Road, Hsinchu, Taiwan, R.O.C.
Tel: 886-3-575-3058
Fax: 886-3-575-3015
6
Email: [email protected]
http://www.aimtron.com.tw
01/08/05
AT5801
Preliminary
4-Channel driver + Power Controller
kΩ
BSEN pin input resistance RBSEN
17
23
27
BSEN pin leak current
-
-
1.0
1.5
-2
-
-
-
-
85
90
95
﹪
25
50
100
mV
-
-
0.5
V
72
90
108
kΩ
-
BATT
V
-
BATT
V
77
95
113
kΩ
-
-5.5
2.8
-
-
0
-
-
300
5.5
-
0.2
nA
mV
V
V
OP+=1.6V
-
-6.5
-3.0
mA
Output short to GND by 50Ω
0.4
0.7
-
mA
Output short to VSYS by 50Ω
-
-
70
0.5
-
-
0.71
0.81
0.91
0.75
0.95
1.20
-
-
-
-
1.0
1.0
-
0.45
1.0
IBSNL
SEL pin detection voltage VSELTH
SEL pin detection current ISELT
(Reset circuit)
VSYS1 reset
HSRT
threshold voltage ratio
Reset detection
VRSTHS
hysteresis width
RESET pin output voltage VRST
RESET pin pull up
RRST
resistance
AMUTE pin output
VAMT1
voltage 1
AMUTE pin output
VAMT2
voltage 2
AMUTE pin pull down
RAMT
resistance
(Operational amplifier section)
Input bias current
IBIAS
Input offset voltage
VOIOP
High level output voltage VOHOP
Low level output voltage VOLOP
Output drive current
ISOU
(source)
Output drive current
ISIN
(sink)
Open loop voltage gain
GVO
Slew rate
SR
(Charging circuit section)
RCHG pin bias voltage
VRCHG
RCHG pin output
RRCHG
resistance
SEL pin leak current 1
ISELLK
SEL pin leak current 2
ISELLK
SEL saturation voltage
VSELCG
BATT
-0.4
BATT
-0.4
VSEL=0V
VSYS1=VSYS2=0V,
μA
BSEN=4.5V
V VSELTH=BATT-SEL, BSEN=2V
μA
Ratio of VSYS1 voltage and
error-amp threshold voltage
IO=1mA, VSYS1=VSYS2=2.8V
IO=-1mA,
VSYS1=VSYS2=2.8V
IO=-1mA, START=0V
VSYS1=VSYS2=2.8V
RL=OPEN
RL=OPEN
dB VIN=-75dBV,f=1kHz
V/μs
CHGVcc=4.5V, RCHG=1.8kΩ
CHGVcc=4.5V,
kΩ
RCHG=0.5 and 0.6V
μA CHGVcc=4.5V,RCHG=OPEN
μA CHGVcc=0.6V,RCHG=1.8kΩ
CHGVcc=4.5V, IO=200mA,
V
RCHG=0Ω
V
*This product is not designed for protection against radioactive rays.
10F-1, No.55, Tung Kuang Road, Hsinchu, Taiwan, R.O.C.
Tel: 886-3-575-3058
Fax: 886-3-575-3015
7
Email: [email protected]
http://www.aimtron.com.tw
01/08/05
AT5801
Preliminary
4-Channel driver + Power Controller
Application
10F-1, No.55, Tung Kuang Road, Hsinchu, Taiwan, R.O.C.
Tel: 886-3-575-3058
Fax: 886-3-575-3015
8
Email: [email protected]
http://www.aimtron.com.tw
01/08/05
AT5801
Preliminary
4-Channel driver + Power Controller
Application explanation
〈H-bridge driver〉
1.Mute function
Brake function and mute function are
assigned to CH1 and other channels of the
four channels respectively.
• When the BRAKE pin is low is normal
operation (high is CH1 mute on),and enters
a brake mode.
• When the MUTE2 pin is low is normal
operation (high is CH2 mute on).
• When the MUTE34 pin is high is normal
operation (low is CH3,4 mute on).
•
2.VREF drop mute
When the voltage impressed to VREF terminal
is 1.0V (typ.) or less, impedance of driver
output becomes “high”.
3.Thermal shutdown
If the chip temperature rises above 150
The power supply of drive output stage is
HVcc terminal and that of pre-drive circuit is
VSYS2 terminal. Attach by-pass capacitor
(approximately 0.1μF) to the leg of this IC
between the power supplies.
〈DC/DC converter control circuit〉
1.Output voltage
Booster circuit of voltage (VSYS1) can be
configured with external component. The
voltage is defined as follows.
℃,then the thermal shutdown (TSD) circuit is
activated and the output current is cut. When
the chip temperature has dropped to 120
℃,then output current begins to flow.
4.Driver gain
Driver input resistance is 10k Ω of CH1,
CH3,CH4 and input resistance of CH2 is 7.5k
Ω.Driver gain can obtain under-mentioned
expression and set it.
10F-1, No.55, Tung Kuang Road, Hsinchu, Taiwan, R.O.C.
Tel: 886-3-575-3058
Fax: 886-3-575-3015
9
Email: se[email protected]
http://www.aimtron.com.tw
01/08/05
AT5801
Preliminary
4-Channel driver + Power Controller
has been 8.4V(typ.), SPRT terminal is charged.
2.Short-circuit protection function
When the output of error amplifier is “H”, if
Then, switching of SW terminal is terminated
the voltage of SPRT terminal has reached
when the voltage of the SPRT terminal has
1.2V(typ.)
terminal,
reached 1.2V(typ.). Time to disable switching
switching of SW terminal is disabled. Time to
depends on a capacitor of the SPRT terminal
disable switching depends on a capacitor of
and it can be calculated by the under-
the SPRT terminal and it can be calculated by
mentioned expression:
upon
charging
the
the under-mentioned expression:
VTH
(sec)
ISPRT
(VTH = 1 .20V , ISPRT = 10 µ A)
t = CSPRT ×
VTH
(sec)
IHV
(VTH = 1 .20V , IHV = 20 µ A)
t = CSPRT ×
〈PWM power supply drive circuit〉
3.Soft-start function
This circuit detects a maximum output level of
The soft-start is functioned by putting a
drivers of four channels and performs the
capacitor between DEAD terminal and GND.
PWM supply of load drive power supply. This
Max duty can be changed by attaching
circuit uses PNP transistor, Schottky Diode
resistance to 4-pin.
and Capacitor as external component.
t = CDEAD × R(sec)
( R = 65KΩ)
4.Power-off operation
SPRT terminal is charged by setting OFF
terminal to “L”. Then, switching of SW
terminal is terminated when the voltage of the
SPRT terminal has reached 1.2V(typ.). Time
to disable switching depends on a capacitor of
the SPRT terminal and it can be calculated by
the under-mentioned expression:
VTH
(sec)
IOFF
(VTH = 1 .20V , IOFF = 20 µ A)
t = CSPRT ×
〈“Empty” detector unit〉
When the voltage impressed to BSEN terminal
has been the detecting voltage or less, EMP
terminal varies from “H” to “L”(open collector
output). Hysteresis of 50mV(typ.) set to the
detecting voltage to prevent the output chattering.
5.Over-voltage protection operation
When the voltage impressed to BSEN terminal
The detecting voltage varies depending on SEL
terminal as follows:
10F-1, No.55, Tung Kuang Road, Hsinchu, Taiwan, R.O.C.
Tel: 886-3-575-3058
Fax: 886-3-575-3015
10
Email: [email protected]
http://www.aimtron.com.tw
01/08/05
AT5801
Preliminary
4-Channel driver + Power Controller
〈Charging circuit〉
The power supply of the charging unit is
CHGVCC terminal and it is independent of
any other circuits. Charging current is set by
the resistance between RCHG terminal and
GND. The charging current takes constant
current through SEL terminal.
This circuit has a private thermal shutdown
〈Reset circuit〉
circuit. When the chip temperature has been
Upon 90﹪of DC/DC converter output voltage,
150℃, the charging current is cut. When the
RESET terminal varies from “L” to “H” and
chip temperature has dropped to 120℃, the
AMUTE terminal changes from “H” to “L”.
charging current begins to flow.
Hysteresis of 50mV(typ.) set to the reset
voltage to prevent the output chattering.
10F-1, No.55, Tung Kuang Road, Hsinchu, Taiwan, R.O.C.
Tel: 886-3-575-3058
Fax: 886-3-575-3015
11
Email: [email protected]
http://www.aimtron.com.tw
01/08/05
AT5801
Preliminary
4-Channel driver + Power Controller
Package Outlines (units:mm): QFP-44
10F-1, No.55, Tung Kuang Road, Hsinchu, Taiwan, R.O.C.
Tel: 886-3-575-3058
Fax: 886-3-575-3015
12
Email: [email protected]
http://www.aimtron.com.tw
01/08/05