P1/8
HIGH-VOLTAGE MONOLITHIC IC
ECN3018
ECN3018 is a single chip three-phase bridge inverter IC which has 6 IGBTs in the circuit.
Especially, it is very suitable for controlling the speed of three-phase DC brushless motors which
are applied to AC100~110V power supplies.
Functions
*
*
*
*
*
Integrated charge pump circuit
Integrated free wheel diodes
Integrated PWM circuit
Integrated FG circuit
Integrated over current protection circuit
Features
*
Speed control for a 3-phase DC brushless motor is available with an external microprocessor.
*
Bottom arm circuits can be operated in 20kHz chopping frequency of PWM.
RU
VCC(15V)
C0
CB
RV
RW
D2
C2
+ -
HU
HV
HW
C+
C-
D1
+
-
VS
C1
CL
VS1
VS2
VCC
VB supply
FG
VB
Clock
Charge Pump
FG
Top Arm
Driver
3-Phase
Distributor
Bottom Arm
Driver
Over Current Sense
Clock
-
+
Vref
0.5V
RS
GH1
GH2
Hall ICs
MU
MV
MW
Microprocessor
Analog
output
VSP
Comparator
+
CMP
-
Motor
SAW wave
Generator
CR
RTR
CTR
VTR
GL
RS
Fig.1 Block Diagram
PDE-3018-1
P2/8
ECN3018
1.
General
(1) Type
i) ECN3018SP
ii) ECN3018SPV
iii)ECN3018SPR
(2) Application
3-Phase DC Brushless Motor
(3) Structure
Monolithic IC
(4) Package
SP-23T
Maximum Allowable Ratings (Ta=25°C)
No.
Items
Symbols
1 Output Device
VSM
Breakdown Voltage
2 Supply Voltage
VCC
3 Input Voltage
VIN
4
5
6
7
8
Output Current
Peak Output Current
Output Current in Start
Up and Accelerating
Operating Junction
Temperature
Storage Temperature
IMDC
IMP
IOM
Tjop
Tstg
2.
Terminal
VS1,VS2
MU,MV,MW
VCC
VSP,RS
HU,HV,HW
MU,MV,MW
MU,MV,MW
MU,MV,MW
Ratings
250
18
-0.5
Unit
V
V
V
A
A
A
°C
Condition
~
VB+0.5
1.0
1.8
1.8
Note 1
Note 1
Note 2
-20
~
+135
3.
°C
-40
~
+150
Note1. Please note that acumulated duty of a period exceeding 1.0A has to be less than 5% of total current flowing
period.
Note2. Thermal Resistance
Rj-c = 4°C /W
Rj-a = 40°C/W
Note3. This IC stands 305V for 1 min. (between Vs1,Vs2-GL1,GH1,GH2 terminal) in case of
Temporary misconection of Power supply terminal.
Recommended Operating Conditions
No.
Items
Symbols Terminal
MIN
TYP
MAX
Unit
Condition
1 Supply Voltage
VS
VS1,2
50
141
185
V
2
VCC
VCC
13.5
15
16.5
V
Note. Recommended Safe Operating Area(SOA)
It is recommended that this IC should be used within the SOA as shown below, where IM and VM are the
current and the voltage at the terminals connected to motor coils when the phase is changed (turned off).
1.8
IM
(A)
Safe
Operating Area
0
0
VM (V)
185
PDE-3018-1
P3/8
ECN3018
4.
Electrical Characteristics (Ta=25°C)
Unless otherwise specified,
No.
Items
Symbols
1 Standby Current
IS
2
ICC
3 Output device FVD
VFT
4
VFB
5 Turn On
TdONT
6 Delay Time
TdONB
7 Turn Off
TdOFFT
8 Delay Time
TdOFFB
9 Free Wheel
VFDT
10 Diode FVD
VFDB
11 Output Resistance
RVTR
12 H or L Level of
VSAWH
13 SAW wave
VSAWL
14 Amplitude of
VSAWW
SAW wave
15 Reference Voltage
Vref
16 Hall signal
VIH
Input Voltage
VIL
17 Hall signal
IIL
Input Current
18 Input Current
at VSP
IVSPH
VCC=15V, VS=141V
Terminal
MIN
VS1,2
-
VCC
-
MU,MV,MW
-
MU,MV,MW
-
MU,MV,MW
-
MU,MV,MW
-
MU,MV,MW
-
MU,MV,MW
-
MU,MV,MW
-
MU,MV,MW
-
VTR
-
CR
4.9
CR
1.7
CR
2.8
RS
HU,HV,HW
HU,HV,HW
HU,HV,HW
0.45
3.5
-
-100
Suffix T; Top arm
B; Bottom arm
TYP
MAX Unit
Condition
4.0
10
mA VSP=0V
10
20
mA
2.0
3.0
V I=0.7A
2.0
3.0
V
0.5
3.0
ms
0.5
3.0
ms
I=0.7A
1.0
3.0
ms
Resistance Load
0.8
3.0
ms
2.0
2.5
V I=0.7A
2.2
2.7
V
200
400
W
5.4
6.1
V Note 2
2.1
2.5
V
3.3
3.8
V Note 3
0.5
-
-
-
0.55
-
1.5
-
V
V
V
mA
mA
HU,HV,HW=0V
Note 1
Pull Up Resistance
VSP
-
-
50
VSP=5.0V
1
against CR
Note
Pull Down Resistance
19 Offset Voltage
VSP
-40
10
60
mV
SPCOMOF
at VSP
20 VB Output Voltage
VB
CB
6.8
7.5
8.2
V
21 VB Output Current
IB
CB
25
-
-
mA
22 FGOutput Resistance
RFGP
FG
-
1.5
3.0
kW
23
RFGN
FG
-
0.7
1.5
kW
24 LVSD Output Voltage LVSDON Vcc, MU,
10.0
11.5
12.9
V
25 LVSD recover Voltage LVSDOFF MV,MW
10.1
12.0
13.0
V
26 LVSD reset hysterisis Vrh
0.1
0.5
0.9
V
Note 1. Pull Up Resistance and Pull Down Resistance are typically 200 kW.
Note 2. Please see Note 2 in item 6 for determining the frequency of SAW wave.
Note 3. The amplitude of SAW(VSAWW) is determined by the following equation,
VSAWW=VSAWH-VSAWL
(V)
VB
Note 4. The quivalent circuit around FG terminal is
shown in Fig. 2
IFG
Note 5. LVSD :Low Voltage Shut Down
dV
LOAD
=0.1V
IFG=1mA Note4
IFG=-1mA Note4
Note.5
FG
Fig.2 Equivalent circuit around FG terminal
PDE-3018-1
P4/8
ECN3018
5.
Function
5.1 Truth Table
HU
H
H
H
L
L
L
L
H
5.2
Timing Chart
Input
HV
L
L
H
H
H
L
L
H
HW
H
L
L
L
H
H
L
H
U-phase
Top
Bottom
OFF
ON
OFF
ON
OFF
OFF
ON
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
V-phase
Top
Bottom
ON
OFF
OFF
OFF
OFF
ON
OFF
ON
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
W-phase
Top
Bottom
OFF
OFF
ON
OFF
ON
OFF
OFF
OFF
OFF
ON
OFF
ON
OFF
OFF
OFF
OFF
HU
Input
HV
HW
MU Output
MV Output
MW Output
FG Output
5.3
PWM Operation
The PWM signal is produced by comparing the input voltage at VSP terminal with the voltage from the
internal SAW wave at CR terminal. The duty of the PWM signal can be changed by the SAW wave amplitude
level, from the minimum point of VSAWL to the maximum point of VSAWH, and when the level is under
VSAWL, the duty becomes 0%, and when the level is over VSAWH, the duty becomes 100%. In addition,
chopping with the PWM signal is operated in the bottom arm circuit.
Over Current Limiting Operation
This IC detects over current by checking the voltage drop at the external resistance RS. When the input voltage
at RS terminal exceeds the internal reference voltage(Vref ; typcally 0.5V), this IC turns off the output of the
bottom arm circuit. After over current detection, reset operation is done at every period of the the inner clock
signal (VTR terminal).
5.4
PDE-3018-1
P5/8
ECN3018
5.5
Vcc under voltrage Detection
When Vcc supply voltage becomes below LVSDON(11.5V typ), all of the IGBTs shut off.
This condition is recovered when Vcc supply voltage becomes greater than LVSDOFF(12.0V typ).
6.
Standard Application
Component
Recommended Value
C0
More than 0.22
mF
C1,C2
D1,D2
Usage
for smoothing internal
power supply(VB).
for charge pump
1.0
mF ±
20%
Hitachi DFG1C4(glass mold) for charge pump
Hitachi DFM1F4(resin mold)
or considerable parts
Note 1.
for current limiting
Remark
stress voltage is 8V
stress voltage is VCC
400V/1.0A
trr£100ns
Rs
CTR
for PWM
Note 2.
1800 pF
±5%
RTR
for PWM
Note 2.
22
Wk ±
5%
Note 1. Start up current is limited by the following equation.
IO = Vref / Rs
(A)
Note 2. PWM frequency is approximately determined by the following equation. In this case, a floating capacitance
must be considered. At recommended value of CR, the error factor of IC is about 10%.
fPWM = -1 / (2C*R*Ln(1-3.5/5.5))
; Ln is natural logarithm
= 0.494 / (C*R)
(Hz)
Note 3. It is recommended that RU,RV,RW should be 5.6 kW± 5%.
RU
VCC(15V)
C0
CB
RV
RW
D2
C2
+ -
HU
HV
HW
C+
C-
D1
+
-
VS
C1
CL
VS1
VS2
VCC
VB supply
FG
VB
Clock
Charge Pump
FG
Top Arm
Driver
3-Phase
Distributor
Bottom Arm
Driver
Over Current Sense
Clock
-
+
Vref
0.5V
RS
GH1
GH2
Hall ICs
MU
MV
MW
Microprocessor
Analog
output
VSP
Comparator
+
CMP
-
Motor
SAW wave
Generator
CR
RTR
CTR
VTR
GL
RS
PDE-3018-1