5.2kVDC Isolated 3W Gate Drive SM DC-DC Converters
Output 2
Rated Output Current
Rated Output Voltage
Output Power
Order Code
1
Input
Voltage
Range
Typical
Application
See page 3
IGBT
IGBT
IGBT
SiC
SiC
SiC
MOSFET
MOSFET
MOSFET
FEATURES
No opto feedback
Patents Pending
Optimised bipolar output voltages for IGBT/
SiC & Mosfet gate drives
Configurable dual outputs for all gate drive
applications: +15V/-5V, +15V/-10V & +20V/-
5V outputs
Reinforced insulation to UL60950
recognised
ANSI/AAMI ES60601-1 1MOPP/2MOOPs
recognised
Characterised dv/dt immunity 80kV/
μ
s at
1.6kV
Characterised partial discharge performance
5.2kVDC isolation test voltage ‘Hi Pot Test’
Ultra low coupling capacitance 15pF
DC link voltage 3kVDC
5V, 12V & 24V input voltages
105°C operating temperature
Order Code
1
MGJ3T05150505MC
MGJ3T12150505MC
MGJ3T24150505MC
MGJ3T05150505MC
MGJ3T12150505MC
MGJ3T24150505MC
MGJ3T05150505MC
MGJ3T12150505MC
MGJ3T24150505MC
V
4.5 - 9
9 - 18
18 - 36
4.5 - 9
9 - 18
18 - 36
4.5 - 9
9 - 18
18 - 36
V
+15
+15
+15
+20
+20
+20
+15
+15
+15
mA
120
120
120
120
120
120
150
150
150
W
1.8
1.8
1.8
2.4
2.4
2.4
2.25
2.25
2.25
V
-10
-10
-10
-5
-5
-5
-5
-5
-5
mA
120
120
120
120
120
120
150
150
150
W
1.2
1.2
1.2
0.6
0.6
0.6
0.75
0.75
0.75
SELECTION GUIDE (Continued)
Output 1
Load Regulation (Max)
3
Load Regulation (Typ)
3
Load Regulation (Typ)
3
Ripple & Noise (Max)
2
Ripple & Noise (Typ)
2
Output 2
Load Regulation (Max)
3
Ripple & Noise (Max)
2
150
150
150
75
75
75
75
75
75
Ripple & Noise (Typ)
2
98
108
104
49
54
52
49
54
52
Input
Voltage
Range
V
MGJ3T05150505MC
MGJ3T12150505MC
MGJ3T24150505MC
MGJ3T05150505MC
MGJ3T12150505MC
MGJ3T24150505MC
MGJ3T05150505MC
MGJ3T12150505MC
MGJ3T24150505MC
4.5 - 9
9 - 18
18 - 36
4.5 - 9
9 - 18
18 - 36
4.5 - 9
9 - 18
18 - 36
Typical
Application
See page 3
IGBT
IGBT
IGBT
SiC
SiC
SiC
MOSFET
MOSFET
MOSFET
PRODUCT OVERVIEW
Offering configurable dual output voltages of +15V/-
10V, +20V/-5V and +15V/-5V, the MGJ3 series of
DC-DC converters is ideal for powering ‘high side’
and ‘low side’ gate drive circuits for IGBTs, Silicon
and Silicon Carbide Mosfets in bridge circuits.
A choice of asymmetric output voltages allows
optimum drive levels for best system efficiency
and EMI. The MGJ3 series is characterised for high
isolation and dv/dt requirements commonly seen in
bridge circuits used in motor drives and inverters.
A disable/frequency synchronisation pin simplifies
EMC filter design. The MGJ3 protection features
include short circuit protection and overload
protection.
%
3
3
3
3
3
3
3
3
3
10
10
10
10
10
10
10
10
10
mVp-p
69
85
83
118
139
135
69
85
83
200
200
200
275
275
275
200
200
200
3
3
3
3
3
3
3
3
3
%
10
10
10
10
10
10
10
10
10
mVp-p
For full details go to
www.murata-ps.com/rohs
1. Components are supplied in tape and reel packaging, please refer to package specification section. Orderable part numbers are
MGJ3TXX150505MC-R7 (23 pieces per reel), or MGJ3TXX150505MC-R13 (92 pieces per reel).
2. See ripple & noise test method.
3. Between 75% and 100% rated output current.
All specifications typical at T
A
=25°C, nominal input voltage and rated output current unless otherwise specified.
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KDC_MGJ3C.E03
Page 1 of 10
Output Power
MGJ3 Series
5.2kVDC Isolated 3W Gate Drive SM DC-DC Converters
SELECTION GUIDE (Continued)
Isolation Capacitance
Nominal Input
Voltage
Input Current
at Rated Load
MTTF
1
Telecordia
kHrs
889
939
915
6662
6596
6596
MIL 217
Efficiency
(Min)
Order Code
MGJ3T05150505MC
MGJ3T12150505MC
MGJ3T24150505MC
V
5
12
24
mA
760
310
155
%
75
78
77
78.5
82
81
Efficiency
(Typ)
pF
15
15
15
INPUT CHARACTERISTICS
Parameter
Voltage range
Conditions
5V input types
12V input types
24V input types
Turn on threshold MGJ3T05
Turn off threshold MGJ3T05
Turn on threshold MGJ3T12
Turn off threshold MGJ3T12
Turn on threshold MGJ3T24
Turn off threshold MGJ3T24
5V input types
Min.
4.5
9
18
Typ.
5
12
24
4.1
3.0
8.1
7.5
16.7
16.1
18
12
9
Max.
9
18
36
Units
V
Under voltage lock out
V
Input ripple current
12V input types
24V input types
mA
p-p
OUTPUT CHARACTERISTICS
Parameter
Minimum load
Voltage set point accuracy
Line regulation
Transient response
Settling time
0.25
ms
Conditions
Below 10% load, 5V and 15V outputs are clamped to 6V and 16V respectively
Nominal output voltages are at 75% loading
Low line to high line
Peak deviation (50-100% & 100-50% load swing)
Min.
10
Typ.
±4
Max.
Units
%
%
2
1.2
%
%V
out
ISOLATION CHARACTERISTICS
Parameter
Isolation test voltage
Resistance
Continuous barrier withstand voltage
Conditions
Flash tested for 1 second
Qualification tested for 1 minute
Viso = 1kVDC
Non-safety barrier application
Min.
5200
5200
100
Typ.
Max.
Units
VDC
GΩ
V
3000
GENERAL CHARACTERISTICS
Parameter
Switching frequency
Conditions
Min.
Typ.
100
Max.
Units
kHz
TEMPERATURE CHARACTERISTICS
Parameter
Operation
Storage
Product temperature rise above ambient
Conditions
See derating graphs
100% Load, Nom V
IN
, Still Air
Min.
-40
-50
Typ.
Max.
105
125
Units
°C
18
Continuous
12V
20V
40V
ABSOLUTE MAXIMUM RATINGS
Short-circuit protection
Input voltage, MGJ3 5V input types
Input voltage, MGJ3 12V input types
Input voltage, MGJ3 24V input types
1. Calculated using MIL-HDBK-217 FN2 and Telecordia SR-332 calculation model with nominal input voltage at full load.
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KDC_MGJ3C.E03
Page 2 of 10
MGJ3 Series
5.2kVDC Isolated 3W Gate Drive SM DC-DC Converters
TECHNICAL NOTES
ISOLATION VOLTAGE
‘Hi Pot Test’, ‘Flash Tested’, ‘Withstand Voltage’, ‘Proof Voltage’, ‘Dielectric Withstand Voltage’ & ‘Isolation Test Voltage’ are all terms that relate to the same thing, a test
voltage, applied for a specified time, across a component designed to provide electrical isolation, to verify the integrity of that isolation.
Murata Power Solutions MGJ3 series of DC-DC converters are all 100% production tested at 5.2kVDC for 1 second and qualification tested at 5.2kVDC for 1 minute.
A question commonly asked is, “What is the continuous voltage that can be applied across the part in normal operation?”
When the insulation in the MGJ3 series is not used as a safety barrier , i.e. provides functional isolation only, continuous or switched voltages across the barrier up to
3kV are sustainable. Long term reliability testing at these voltages continues. Peak Inception voltages measured were in excess of 3.5kV when testing for partial dis-
charge in accordance with IEC 60270. Please contact Murata for further information.
The MGJ3 series
has been recognised by
Underwriters Laboratory to 250 Vrms Reinforced Insulation, please see safety approval section below.
REPEATED HIGH-VOLTAGE ISOLATION TESTING
It is well known that repeated high-voltage isolation testing of a barrier component can actually degrade isolation capability, to a lesser or greater degree depending on
materials, construction and environment. We therefore strongly advise against repeated high voltage isolation testing, but if it is absolutely required, that the voltage be
reduced by 20% from specified test voltage.
SAFETY APPROVAL
ANSI/AAMI ES60601-1
The MGJ3 series is recognised to ANSI/AAMI ES60601-1 and provides 1 MOPP (Means Of Patient Protection) and 2 MOOP (Means Of Operator Protection) based upon a working
voltage of 250 Vrms max, between Primary and Secondary.
UL 60950
The MGJ3 series has been recognised by Underwriters Laboratory (UL) to UL 60950 for reinforced insulation to a working voltage of 250Vrms with a maximum measured product
operating temperature of 105°C.
Creepage and clearance 7mm.
FUSING
The MGJ3 Series of converters are not internally fused so to meet the requirements of UL an anti-surge input line fuse should always be used with ratings as defined below.
Input Voltage, 5V 2A
Input Voltage, 12V 1A
Input Voltage, 24V 0.5A
All fuses should be UL recognised, 125V rated.
CHARACTERISATION TEST METHODS
Ripple & Noise Characterisation Method
Ripple and noise measurements are performed with the following test configuration.
C1
1μF X7R multilayer ceramic capacitor, voltage rating to be a minimum of 3 times the output voltage of the DC-DC converter
10μF tantalum capacitor, voltage rating to be a minimum of 1.5 times the output voltage of the DC-DC converter with an ESR of less
C2
than 100mΩ at 100 kHz
C3
100nF multilayer ceramic capacitor, general purpose
R1
450Ω resistor, carbon film, ±1% tolerance
R2
50Ω BNC termination
T1
3T of the coax cable through a ferrite toroid
RLOAD
Resistive load to the maximum power rating of the DC-DC converter. Connections should be made via twisted wires
Measured values are multiplied by 10 to obtain the specified values.
Differential Mode Noise Test Schematic
DC/DC Converter
OSCILLOSCOPE
C1 C2 C3
+
SUPPLY
Input
R1
T1
R2
Y INPUT
+
Output
-
-
R LOAD
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KDC_MGJ3C.E03
Page 3 of 10
MGJ3 Series
5.2kVDC Isolated 3W Gate Drive SM DC-DC Converters
APPLICATION NOTES
Start-up times
Typical start up times for this series, with no additional output capacitance are:
Start-up times
ms
15
15
15
Output capacitance must not exceed:
Output Voltage
V
15
5
Maximum output
capacitance
μF
120
220
Part No.
MGJ3T05150505MC
MGJ3T12150505MC
MGJ3T24150505MC
Disable/Frequency synchronisation
Please refer to application notes for further information.
Min
Disable/Sync
1
Pull Down Current
Input High
Input Low
Frequency Range
Duty Cycle
2
0
90
25
Typ
0.5
Max
5
0.8
110
75
Units
mA
V
V
kHz
%
Synchronisation
100
The Disable/Synchronization pin has three modes:
1. When a DC logic low voltage is applied to this pin the MGJ3 is disabled and enters a low quiescent current sleep mode.
2. When this pin is left floating or a DC logic high (CMOS/TTL compatible) voltage is applied the MGJ3 is enabled and operates at the programmed frequency of 100kHz.
3. When a square wave of between 90kHz and 110kHz is applied to this pin, the switcher operates at the same frequency as the square wave. The falling edge of the
square wave corresponds to the start of the switching cycle. If the signal is slower than 25Hz, it will be interpreted as enabling and disabling the part. If the MGJ3 is
disabled, it must be disabled for 7 clock cycles before being re-enabled.
Note: The DIS/Sync pin is a high impedance TTL input and can be triggered by noise from external circuits if not treated carefully. It is advised that any pcb traces
connected to the DIS/Sync pin are kept as short as possible and away from other noisy pcb traces. The track should follow a similar route to the return path to avoid
differential noise pick up. If the pin is not used for synchronisation then a 22nF capacitor can be added from DIS/Sync pin to –Vin to suppress noise.
Output configurations for power switches
Terminal
(P10)
15V Output
(P9)
15V Return
5VA Output
(P7)
5VA Return
5VB Output
(P8)
5VB Return
IGBT
+15V
0.12A
0V
SIC
+20V
0.12A
No connection
MOSFET
+15V
0.15A
0V
No connection
-10V
0.12A
0V
-5V
0.12A
-5V
0.15A
No connection
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KDC_MGJ3C.E03
Page 4 of 10
MGJ3 Series
5.2kVDC Isolated 3W Gate Drive SM DC-DC Converters
