Offering configurable triple output voltages of +15V,
+5V and +5V, the MGJ3 series of DC-DC converters
are ideal for powering ‘high side’ and ‘low side’ gate
drive circuits for IGBTs, Silicon Carbide and 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, over temperature
protection and overload protection.
SELECTION GUIDE (Continued)
Isolation Capacitance
Nominal Input
Voltage
Input Current
at Rated Load
Efficiency
(Min)
Order Code
V
MGJ3T05150505MC
MGJ3T12150505MC
MGJ3T24150505MC
5
12
24
mA
760
310
155
73
75
76
%
80
82
81
Efficiency
(Typ)
pF
15
15
15
For full details go to
www.murata-ps.com/rohs
1. Calculated using MIL-HDBK-217 FN2 calculation model with nominal input voltage at full load.
2. See ripple & noise test method.
All specifications typical at T
A
=25°C, nominal input voltage and rated output current unless otherwise specified.
www.murata-ps.com/support
KDC_MGJ3C.A01
Page 1 of 8
Ripple & Noise (Typ)
2
mVp-p
Output Power
MGJ3 Series
5.2kVDC Isolated 3W SM DC/DC Converters
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
45
25
15
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
Minimal load to meet datasheet specification
Voltage set point accuracy
Line regulation
Transient response
Settling time
0.2
ms
Conditions
All output types
Low line to high line
Peak deviation (50-100% & 100-50% swing)
Min.
40
Typ.
±4
Max.
Units
%
%
%
%V
out
2
3.2
ISOLATION CHARACTERISTICS
Parameter
Isolation test voltage
Resistance
Conditions
Flash tested for 1 second
Viso = 1kVDC
Min.
5200
100
Typ.
Max.
Units
VDC
GΩ
GENERAL CHARACTERISTICS
Parameter
Switching frequency
Conditions
Min.
Typ.
100
Max.
Units
kHz
TEMPERATURE CHARACTERISTICS
Parameter
Operation
Storage
Over temperature protection
Product temperature above ambient
Conditions
Min.
-40
-50
Typ.
Max.
105
125
Units
100% Load, Nom V
IN
, Still Air
180
18
°C
ABSOLUTE MAXIMUM RATINGS
Short-circuit protection (for SELV input voltages)
Input voltage, MGJ3 5V input types
Input voltage, MGJ3 12V input types
Input voltage, MGJ3 24V input types
Continuous
12V
20V
40V
RoHS COMPLIANCE, MSL AND PSL INFORMATION
This series is compatible with RoHS soldering systems with a peak reflow solder temperature of 245ºC as per
J-STD-020D.1. The pin termination finish on this product series is Gold with Nickel Pre-plate. The series is backward
compatible with Sn/Pb soldering systems. The series has a Moisture Sensitivity Level (MSL) 1.
www.murata-ps.com/support
KDC_MGJ3C.A01
Page 2 of 8
MGJ3 Series
5.2kVDC Isolated 3W 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
Part No.
MGJ3T05150505MC
MGJ3T12150505MC
MGJ3T24150505MC
Output capacitance must not exceed:
Output Voltage
V
15
5
Maximum output
capacitance
μF
120
220
Disable/Frequency synchronisation
Min
Disable/Synch
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
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
www.murata-ps.com/support
KDC_MGJ3C.A01
Page 3 of 8
MGJ3 Series
5.2kVDC Isolated 3W 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 their stated isolation voltage. This is 5.2kVDC for 1 second.
A question commonly asked is, “What is the continuous voltage that can be applied across the part in normal operation?”
The MGJ3 series
is pending recognition by
Underwiters Laboratory for various voltages, 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
UL 60601
The MGJ3 series is pending recognition by Underwriters Laboratory (UL) to the 3rd edition of 60601 and provides 1 MOOP (means of operator protection) based upon a working
voltage of 250 Vrms max., between Primary and Secondary.
UL 60950
The MGJ3 series is pending recognition by Underwriters Laboratory (UL) to UL 60950 for reinforced insulation to a working voltage of 250Vrms.
CHARACTERISATION TEST METHODS
Ripple & Noise Characterisation Method
Ripple and noise measurements are performed with the following test configuration.
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.
嵌入式系统
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
