ICH 360-Watt Series
Wide Input Isolated Half Brick DC-DC
Input Range
(Vdc)
Model Number
Min
Max
Vout
(Vdc)
Iout
(A)
ICH0130V1xC
9
36
12
30
ICH0415V1xC
9
36
24
15
ICH0513V1xC
9
36
28
13
Features
4:1 Input voltage range of 9-36V
Single outputs of 12V, 24V or 28V
2250V Isolation voltage (Input-to-Output)
Industry Standard half brick package
2.4" x 2.5" x 0.52" (61mm x 64mm x 13.2mm)
Efficiency up to 95.6%
Excellent thermal performance
Over-Current and Short Circuit Protection
Over-Temperature protection
Monotonic startup into pre-bias loads
200kHz Fixed switching frequency
Remote On/Off control (Positive or Negative logic)
Good shock and vibration damping
Operating Temperature Range -40ºC to +105ºC
RoHS Compliant
Product Overview
temperature operation.
The 4:1 input voltage 360 Watt single output ICH DC-DC
converter provides a precisely regulated dc output. The output
voltage is fully isolated from the input, allowing the output to be
positive or negative polarity and with various ground
connections. The enclosed half brick package meets the most
rigorous performance standards in an industry standard
footprint for mobile (12Vin), process control (24Vin), and
Commercial-Off-The-Shelf (28Vin) applications.
The converters high efficiency and high power density are
accomplished through use of high-efficiency synchronous
rectification technology, advanced electronic circuit,
packaging and thermal design thus resulting in a high
reliability product. The converter operates at a fixed frequency
of 200kHz and follows conservative component derating
guidelines.
The ICH Series includes an external TRIM adjust and remote
ON/OFF control. Threaded through holes are provided to allow
easy mounting or the addition of a heat sink for extended
Product is designed and manufactured in the USA.
Part Number Structure and Ordering Guide
Description
Product Family
Form Factor
Vout*
Output Current
Vin Range
On/Off Control Logic
Specific Customer Configuration
RoHS Compliant
Part Number Structure
I
Definition and Options
C
H
0
1
3
0
V
1
P
X
X
IC= Industrial Class
H = Half Brick
01 = 12Vout, 02 = 5Vout, 03 = 3.3Vout, 04 = 24Vout, 05 = 28Vout
Max Iout in Amps
V1 = 9 to 36V
N = Negative, P = Positive (Standard)
Customer Code, Omit for Standard
C RoHS 6/6 Compliant
*NOTE: Some part number combinations might not be available. Please contact the factory for non-standard or special order products.
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MDC_ICH_360W_A04 Page 1 of 17
ICH 360-Watt Series
Wide Input Isolated Half Brick DC-DC
Electrical Specifications – All Models
Conditions: Ta = 25ºC, airflow = 300 LFM (1.5m/s), Vin = 24VDC, unless otherwise specified. Specifications subject to change without notice.
Parameter
Notes
Min
Typ
Max
Units
0
40
V
50
V
-40
105
ºC
-55
125
ºC
Absolute Maximum Ratings
Input Voltage
Operating Temperature (See Note 1)
Continuous
Transient (100ms)
Baseplate (100% load)
Storage Temperature
Isolation Characteristics and Safety
Isolation Voltage
Input to Output
2250
V
Input to Baseplate & Output to Baseplate
1500
V
Isolation Capacitance
Isolation Resistance
10
Insulation Safety Rating
Agency Approvals
4500
pF
20
MΩ
Basic
Designed to meet UL/cUL 60950, IEC/EN 60950-1
Feature Characteristics
Fixed Switching Frequency
200
Output Voltage Ripple has twice this frequency
Output Voltage Trim Range
kHz
± 10
Remote Sense Compensation
This function is not provided
Output Overvoltage Protection
Non-latching
N/A
Overtemperature Shutdown (Baseplate)
Non-latching
Auto-Restart Period
Applies to all protection features
Turn-On Time from Vin
Time from UVLO to
Vo=90% Vout (NOM) Resistive load
Turn-On time from ON/OFF Control
Trim from ON to
Vo=90% Vout (NOM) Resistive load
Rise Time
Vout from 10% to 90%
4
ON state
Pin open = ON or external voltage applied
2
Control Current
Leakage current
117
450
%
%
124
130
%
110
120
ºC
500
550
ms
517
530
ms
17
20
ms
7.5
11
ms
12
V
0.16
mA
ON/OFF Control - Positive Logic
OFF state
Control Current
Sinking
0
0.8
V
0.3
0.36
mA
0.8
V
12
V
ON/OFF Control - Negative Logic
ON state
Pin shorted to -INPUT or
OFF state
Pin open = Off or
2
Thermal Characteristics
Thermal resistance Baseplate to Ambient
Converter soldered to 3.95” x 2.5” x 0.07” 4 layer/ 2oz
copper FR4 PCB.
5.2
ºC/W
1. A thermal management device, such as a heatsink, is required to ensure proper operation of this device. The thermal management medium is required to
maintain baseplate < 105ºC for full rated power.
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MDC_ICH_360W_A04 Page 2 of 17
ICH 360-Watt Series
Wide Input Isolated Half Brick DC-DC
Electrical Specifications – ICH0130V1
Conditions: Ta = 25ºC, airflow = 300 LFM (1.5m/s), Vin = 24VDC, unless otherwise specified. Specifications subject to change without notice.
Parameter
Notes
Min
Typ
Max
Units
9
24
36
V
Turn-on Threshold
8.2
8.5
8.8
V
Turn-off Threshold
7.7
8
8.3
V
0.4
0.55
0.7
V
45.3
A
Input Characteristics
Operating Input Voltage Range
Input Under Voltage Lockout
Non-latching
Lockout Hysteresis Voltage
Maximum Input Current
Vin = 9V, 80% Load
Vin = 12V, 100% Load
33.2
A
Vin = 24V, Output Shorted
65
mARMS
Input Stand-by Current
Converter Disabled
2
4
mA
Input Current @ No Load
Converter Enabled
240
280
mA
Minimum Input Capacitance (external)
ESR < 0.1 Ω
Inrush Transient
Vin = 36V (0.4V/µsec), no external input cap
0.4
Input Terminal Ripple Current, ic
25 MHz bandwidth, 100% Load (Fig. 2)
560
470
µF
1
A2s
mARMS
Output Characteristics
Output Voltage Range
Output Voltage Set Point Accuracy
(50% load)
11.64
12.00
12.36
V
11.88
12.00
12.12
V
0.05
0.15
%
0.08
0.15
%
0.015
0.03
%/ºC
Output Regulation
Over Line
Vin = 9V to 36V
Over Load
Vin = 24V, Load 0% to 100%
Temperature Coefficient
Overvoltage Protection
Output Ripple and Noise - 20MHz bandwidth
External Load Capacitance
14.0
(Fig. 3) 100% Load,
Cext = 470 µF/70mΩ + 1 µF ceramic
Full Load (resistive)
-40 ºC < Ta < +105 ºC
Cext
ESR
15.6
V
120
180
mVPK-PK
30
60
mVRMS
470
4700
µF
10
100
mΩ
30
A
Output Current Range (See Fig. A)
Vin = 9V - 36V
0
Current Limit Inception
Vin = 9V - 36V
33
RMS Short-Circuit Current
Non-latching, Continuous
36
39
A
4
7
ARMS
±320
mV
Dynamic Response
Load change 50% - 75% - 50%, di/dt = 1A/µs
Co = 470 µF/70mΩ + 1 µF ceramic
±200
Load change 50% - 100% - 50%, di/dt=1A/µs
Co = 470 µF/70mΩ + 1 µF ceramic
±450
mV
400
µs
Setting Time to 1% of Vout
Efficiency
100% Load
50% Load
Vin = 24V
93.7
94.4
95.1
%
Vin = 12V
92.9
93.6
94.3
%
Vin = 24V
94.1
94.8
95.5
%
Vin = 12V
94.0
94.7
95.1
%
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MDC_ICH_360W_A04 Page 3 of 17
ICH 360-Watt Series
Wide Input Isolated Half Brick DC-DC
Electrical Specifications – ICH0415V1
Conditions: Ta = 25ºC, airflow = 300 LFM (1.5m/s), Vin = 24VDC, unless otherwise specified. Specifications subject to change without notice.
Parameter
Notes
Min
Typ
Max
Units
9
24
36
V
Turn-on Threshold
8.2
8.5
8.8
V
Turn-off Threshold
7.7
8.0
8.3
V
0.4
0.55
0.7
V
45
A
Input Characteristics
Operating Input Voltage Range
Input Under Voltage Lockout
Non-latching
Lockout Hysteresis Voltage
Maximum Input Current
Vin = 9V, 80% Load
Vin = 12V, 100% Load
42
A
Vin = 24V, Output Shorted
75
mARMS
Input Stand-by Current
Converter Disabled
2
4
mA
Input Current @ No Load
Converter Enabled
240
300
mA
Minimum Input Capacitance (external)
ESR < 0.1 Ω
Inrush Transient
Vin = 36V (0.4V/µsec), no external input cap
0.4
Input Terminal Ripple Current, ic
25 MHz bandwidth, 100% Load (Fig. 2)
600
470
µF
1
A2s
mARMS
Output Characteristics
Output Voltage Range
Output Voltage Set Point Accuracy
(50% load)
23.28
24.00
24.72
V
23.76
24.00
24.24
V
0.05
0.15
%
0.08
0.15
%
0.015
0.03
%/ºC
Output Regulation
Over Line
Vin = 9V to 36V
Over Load
Vin = 24V, Load 0% to 100%
Temperature Coefficient
Overvoltage Protection
Output Ripple and Noise - 20MHz bandwidth
External Load Capacitance
28.1
(Fig. 3) 100% Load,
Cext = 470 µF/70mΩ + 1 µF ceramic
Full Load (resistive)
-40 ºC < Ta < +105 ºC
Cext
ESR
31.2
V
240
360
mVPK-PK
50
80
mVRMS
470
2200
µF
10
100
mΩ
15
A
Output Current Range (See Fig. A)
Vin = 9V - 36V
0
Current Limit Inception
Vin = 9V - 36V
16.5
RMS Short-Circuit Current
Non-latching, Continuous
18
19.5
3.8
6
±420
A
ARMS
Dynamic Response
Load change 50% - 75% - 50%, di/dt = 1A/µs
Co = 470 µF/70mΩ + 1 µF ceramic
±280
Load change 50% - 100% - 50%, di/dt=1A/µs
Co = 470 µF/70mΩ + 1 µF ceramic
±500
mV
600
µs
Setting Time to 1% of Vout
mV
Efficiency
100% Load
50% Load
Vin = 24V
94.5
95.2
95.9
%
Vin = 12V
93.8
94.5
95.2
%
Vin = 24V
94.5
95.4
96.1
%
Vin = 12V
94.6
95.2
95.9
%
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MDC_ICH_360W_A04 Page 4 of 17
ICH 360-Watt Series
Wide Input Isolated Half Brick DC-DC
Electrical Specifications – ICH0513V1
Conditions: Ta = 25ºC, airflow = 300 LFM (1.5m/s), Vin = 24VDC, unless otherwise specified. Specifications subject to change without notice.
Parameter
Notes
Min
Typ
Max
Units
9
24
36
V
Turn-on Threshold
8.2
8.5
8.8
V
Turn-off Threshold
7.7
8
8.3
V
0.4
0.55
0.7
V
45
A
Input Characteristics
Operating Input Voltage Range
Input Under Voltage Lockout
Non-latching
Lockout Hysteresis Voltage
Maximum Input Current
Vin = 9V, 80% Load
Vin = 12V, 100% Load
42
A
Vin = 24V, Output Shorted
55
mARMS
Input Stand-by Current
Converter Disabled
2
4
mA
Input Current @ No Load
Converter Enabled
240
280
mA
Minimum Input Capacitance (external)
ESR < 0.1 Ω
Inrush Transient
Input Terminal Ripple Current, ic
Vin = 36V (0.4V/µsec), no external input cap
0.4
25 MHz bandwidth, 100% Load (Fig. 2)
560
470
µF
1
A2s
mARMS
Output Characteristics
Output Voltage Range
Output Voltage Set Point Accuracy
(50% load)
27.16
28.00
28.84
V
27.72
28.00
28.28
V
0.05
0.15
%
0.08
0.15
%
0.015
0.03
%/ºC
Output Regulation
Over Line
Vin = 9V to 36V
Over Load
Vin = 24V, Load 0% to 100%
Temperature Coefficient
Overvoltage Protection
Output Ripple and Noise - 20MHz bandwidth
External Load Capacitance
32.8
36.4
V
280
380
mVPK-PK
50
85
mVRMS
470
2200
µF
(Fig. 3) 100% Load,
Cext = 470 µF/70mΩ + 1 µF ceramic
Full Load (resistive)
-40 ºC < Ta < +105 ºC
Cext
ESR
10
100
mΩ
Output Current Range (See Fig. A)
Vin = 9V - 36V
0
13
A
Current Limit Inception
Vin = 9V - 36V
14.3
RMS Short-Circuit Current
Non-latching, Continuous
15.6
16.9
A
2.2
6
ARMS
±300
mV
Dynamic Response
Load change 50% - 75% -50%, di/dt = 1A/µs
Co = 470 µF/70mΩ + 1 µF ceramic
±180
Load change 50% - 100% - 50%, di/dt=1A/µs
Co = 470 µF/70mΩ + 1 µF ceramic
±400
mV
500
µs
Setting Time to 1% of Vout
Efficiency
100% Load
50% Load
Vin = 24V
94.3
95.4
96.1
%
Vin = 12V
93.7
94.4
95.1
%
Vin = 24V
94.3
95.0
95.7
%
Vin = 12V
94.0
94.7
95.1
%
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MDC_ICH_360W_A04 Page 5 of 17
ICH 360-Watt Series
Wide Input Isolated Half Brick DC-DC
Environmental and Mechanical Specifications: Specifications subject to change without notice.
Parameter
Notes
Min
Typ
Max
Units
Environmental
Operating Humidity
Non-condensing
95
%
Storage Humidity
Non-condensing
95
%
RoHS Compliance
See Murata Website http://www.murata-ps.com/en/support/rohs-compliance.html for the complete RoHS
Compliance Statement
Shock and Vibration (See Note 1)
Designed to meet MIL-STD-810G for functional shock and vibration
Water Washability
Not recommended for water wash process. Contact the factory for more information.
Mechanical
Unit Weight
3.85
Ounces
109.2
Grams
PCB
Operating Temperature
Tg
Through Hole Pin Diameters
All pins
0.083
Inches
2.006
2.057
2.108
mm
0.038
0.04
0.042
Inches
0.965
1.016
1.067
mm
Copper Alloy
10µ” Gold over Nickel
2.4 x 2.5 x 0.52
60.96 x 63.50 x 13.21
Inches
mm
Plastic: Vectra LCP FIT30: 1/2-16 EDM Finish
Material
Baseplate
0.081
Brass Alloy TB3 or “Eco Brass”
Case Dimensions
Case Material
ºC
0.079
Pins 1,4,5 and 9
Pins 3 and 7
Through Hole Pin Finish
ºC
170
Pins 1,4,5 and 9
Pins 3 and 7
Through Hole Pins Material
130
Aluminum
Flatness
0.008
Inches
0.20
mm
5.4
MHrs
Reliability
MTBF
Telcordia SR-332, Method I Case 1 50% electrical
stress, 40ºC components
EMI and Regulatory Compliance
Conducted Emissions
MIL-STD-461F C102 with external EMI filter network (see Figures, 34 and 35)
1. The unit must be properly secured to the interface medium (PCB/Chassis) by use of the threaded inserts of the unit.
Figure A: Output Power as function of input voltage.
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MDC_ICH_360W_A04 Page 6 of 17
ICH 360-Watt Series
Wide Input Isolated Half Brick DC-DC
TECHNICAL NOTES
Input and Output Capacitance
In many applications, the inductance associated with the distribution from
the power source to the input of the converter can affect the stability of
the converter. This becomes of great consideration for input voltage at
12V or below. In order to enable proper operation of the converter, in
particular during load transients, an additional input capacitor is required.
Minimum required input capacitance, mounted close to the input pins, is
1000µF with ESR < 0.1 Ω. Since inductance of the input power cables
could have significant voltage drop due to rate of change of input current
di(in)/dt during transient load operation an external capacitance on the
output of the converter is required to reduce di(in)/dt. It is required to use
at least 470 µF (ESR < 0.07Ω) on the output. Another constraint is minimum
rms current rating of the input and output capacitors which is application
dependent. One component of input rms current handled by input
capacitor is high frequency component at switching frequency of the
converter (typ. 400kHz) and
is specified under “Input terminal ripple
current” ic. Typical values at full rated load and 24 Vin are provided in
Section “Characteristic Waveforms” for each model and are in range of
0.56A - 0.6A. Second component of the ripple current is due to reflected
step load current on the input of the converter. Similar consideration needs
to be taken into account for output capacitor and in particular step load
ripple current component. Consult the factory for further application
guidelines.
Additionally, for EMI conducted measurement it is necessary to use 5µH
LISNs instead of typical 50µH LISNs.
The negative logic version turns on when the ON/OFF pin is at logic low
and turns off when at logic high. The converter is on when the ON/OFF pin
is either shorted to -INPUT pin or kept below 0.8V. The converter is off
when the ON/OFF pin is either left open or external voltage greater than 2V
and not more than 12V is applied between ON/OFF pin and -INPUT pin.
See the Electrical Specifications for logic high/low definitions.
The ON/OFF pin is internally pulled up to typically 4.5V via resistor and
connected to internal logic circuit via RC circuit in order to filter out noise
that may occur on the ON/OFF pin. A properly de-bounced mechanical
switch, open-collector transistor, or FET can be used to drive the input of
the ON/OFF pin. The device must be capable of sinking up to 0.36mA at
a low level voltage of < 0.8V. During logic high, the typical maximum
voltage at ON/OFF pin (generated by the converter) is 4.5V, and the
maximum allowable leakage current is 160µA. If not using the remote
on/off feature leave the ON/OFF pin open.
TTL Logic Level - The range between 0.81V as maximum turn off voltage
and 2V as minimum turn on voltage is considered the dead-band. Operation
in the dead-band is not recommended.
External voltage for ON/OFF control should not be applied when there is no
input power voltage applied to the converter.
Protection Features:
ON/OFF (Pin 3)
Input Undervoltage lockout (UVLO)
The ON/OFF pin is used to turn the power converter on or off remotely via
a system signal and has positive logic. A typical connection for remote
ON/OFF function is shown in Fig. 1.
Input undervoltage lockout is standard with this converter. The converter
will shut down when the input voltage drops below a pre-determined
voltage.
The input voltage must be typically above 8.5V for the converter to turn
on. Once the converter has been turned on, it will shut off when the input
voltage drops typically below 8V. If the converter is started by input
voltage (ON/OFF (pin 3) left open) there is typically 500msec delay from
the moment when input voltage is above 8.5V turn-on voltage and the
time when output voltage starts rising. This delay is intentionally
provided to prevent potential startup issues especially at low input voltages.
Vin (+)
ICH
CONVERTER
Vout (+)
(TOP VIEW)
Rload
ON/OFF
Vin
CONTROL
INPUT
Vin (-)
Vout (-)
Fig. 1: Circuit configuration for ON/OFF function.
The positive logic version turns on when the ON/OFF pin is at logic high
and turns off when at logic low. The converter is on when the ON/OFF pin
is either left open, or external voltage not more than 12V is applied between
ON/OFF pin and -INPUT pin. See the Electrical Specifications for logic
high/low definitions.
Output Overcurrent Protection (OCP)
The converter is protected against overcurrent or short circuit conditions.
Upon sensing an overcurrent condition, the converter will switch to
constant current operation and thereby begin to reduce output voltage.
When the output voltage drops below approx. 75% of the nominal value of
output voltage, the converter will shut down.
Once the converter has shut down, it will attempt to restart nominally
every 500msec with a typical 3% duty cycle. The attempted restart will
continue indefinitely until the overload or short circuit conditions are
removed or the output voltage rises above 75% of its nominal value.
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MDC_ICH_360W_A04 Page 7 of 17
ICH 360-Watt Series
Wide Input Isolated Half Brick DC-DC
Once the output current is brought back into its specified range, the
converter automatically exits the hiccup mode and continues normal
operation.
During initial startup, if output voltage does not exceed typical 75% of
nominal output voltage within 20 msec after the converter is enabled,
the converter will be shut down and will attempt to restart after 500
msec.
Output Overvoltage Protection (OVP)
The converter will shut down if the output voltage across Vout (+) (Pin
5) and Vout (-) (Pin 9) exceeds the threshold of the OVP circuitry. The
OVP circuitry contains its own reference, independent of the output
voltage regulation loop. Once the converter has shut down, it will
attempt to restart every 500 msec until the OVP condition is removed.
Overtemperature Protection (OTP)
The ICH converters have non-latching overtemperature protection. It
will shut down and disable the output if temperature at the center of
the base plate exceeds a threshold of 114ºC (typical).
The converter will automatically restart when the base
temperature has decreased by approximately 20ºC
Safety Requirements
Basic Insulation is provided between input and the output.
Output Voltage Adjust/TRIM (pin7)
The TRIM pin allows user to adjust output voltage 10% up or down
relative to rated nominal voltage by addition of external trim resistor.
Due to absence of Remote Sense Pins, an external trim resistor should
be connected to output pins using Kelvin connection. If trimming is not
used, the TRIM pin should be left open.
Trim Down - Decrease Output Voltage
Trimming down is accomplished by connecting an external resistor,
Rtrim-down, between the TRIM (pin7) and the Vout(-) (pin 9) using
Kelvin connection, with a value of:
R trim-d own =
(
3010
a) 50A for 9V < Vin <18V
b) 25A for 18V < Vin <36V
Electromagnetic Compatibility (EMC)
EMC requirements must be met at the end-product system level, as
no specific standards dedicated to EMC characteristics of board
mounted component dc-dc converters exist.
With the addition of a two stage external filter, the ICH converters will
pass the requirements of MIL-STD-461F CE102 Base Curve for
conducted emissions.
Absence of the Remote Sense Pins
Customers should be aware that ICH converters do not have a Remote
Sense feature. Care should be taken to minimize voltage drop on the
user’s motherboard as well as if trim function is used.
)
− 60.2 [kΩ]
Where,
Rtrim-down = Required value of the trim-down resistor [kΩ] Vo(noM)
= Nominal value of output voltage
[V]
Vo(req)
= Required value of output voltage
[V]
∆=
VO (REQ )−VO (NOM )
VO (NOM )
[%]
To trim the output voltage 10% (∆=10) down, required external trim
resistance is:
3010
(
R trim-down =
The converters have no internal fuse. To comply with safety agencies
requirements, a fast-acting or time-delay fuse is to be provided in the
unearthed lead.
Recommended fuse values are:
∆
10
)
− 60.2 = 240.8 [k Ω]
Trim Up - Increase Output Voltage
Trimming up is accomplished by connecting an external resistor,
Rtrim-up, between the TRIM (pin 7) and the Vout(+) (pin 5) using Kelvin
connection, with a value of:
Rtrim -up = 30.1 ∗
VO(NOM)∗(100+∆)
{[
1.225∆
]−
(100+2∆)
∆
} [k Ω]
To trim the output voltage up, for example 24V to 26.4V,
Δ=10 and required external resistor is:
R trim -up = 30.1 ∗
{[
24 ∗ (100+10)
1 .225 ∗ 10
]−
(100+2 ∗10)
10
}=
[ ]
6125 k Ω
Note that trimming output voltage more than 10% is not
recommended and OVP may be tripped.
Active Voltage Programming
In applications where output voltage needs to be adjusted actively, an
external voltage source, such as for example a Digital-to-Analog
converter (DAC), capable of both sourcing and sinking current can be
used. It should be connected with series resistor Rg across TRIM (pin
7) and Vout (-) (pin 9) using Kelvin connection. Please contact Murata
technical representative for more details.
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MDC_ICH_360W_A04 Page 8 of 17
ICH 360-Watt Series
Wide Input Isolated Half Brick DC-DC
Thermal Consideration
Soldering Guidelines
The ICH converter can operate in a variety of thermal environments.
However, in order to ensure reliable operation of the converter,
sufficient cooling should be provided.
The ICH converter is
encapsulated in plastic case with metal baseplate on the top. In order
to improve thermal performance, power components inside the unit
are thermally coupled to the baseplate. In addition, thermal design of
the converter is enhanced by use of input and out pins as heat transfer
elements. Heat is removed from the converter by conduction,
convection and radiation.
The RoHS-compliant through hole ICH converters use Sn/Ag/Cu Pbfree solder and RoHS compliant components. They are designed to be
processed through wave soldering machines. The pins are 100%
matte tin over nickel plated and compatible with both Pb and Pb-free
wave soldering processes. It is recommended to follow specifications
below when installing and soldering ICH converters. Exceeding these
specifications may cause damage to the ICH converter.
There are several factors such as ambient temperature, airflow,
converter power dissipation, converter orientation how converter is
mounted as well as the need for increased reliability that need to be
taken into account in order to achieve required performance. It is
highly recommended to measure temperature in the middle of the
baseplate in particular application to ensure that proper cooling of the
convert is provided.
A reduction in the operating temperature of the converter will result in
an increased reliability.
Wave Solder Guideline for Sn/Ag/Cu based solders
Maximum Preheat Temperature
Maximum Pot Temperature
Maximum Solder Dwell Time
115ºC
270ºC
7 seconds
Wave Solder Guideline for SN/Pb based solders
Maximum Preheat Temperature
Maximum Pot Temperature
Maximum Solder Dwell Time
105ºC
250ºC
6 seconds
Thermal Derating
There are two most common applications: 1) the ICH converter is
thermally attached to a cold plate inside chassis without any forced
internal air circulation; 2) the ICH converter is mounted in an open
chassis on system board with forced airflow with or without an
additional heatsink attached to the baseplate of the ICH converter.
The best thermal results are achieved in application 1) since the
converter is cooled entirely by conduction of heat from the top surface
of the converter to a cold plate and temperature of the components is
determined by the temperature of the cold plate. There is also some
additional heat removal through the converters pins to the metal layers
in the system board. It is highly recommended to solder pins to the
system board rather than using receptacles. Typical derating output
power and current are shown in Figs. 7–12 for various baseplate
temperatures up to 105ºC. Note that operating converter at these
limits for prolonged time will affect reliability.
ICH converters are not recommended for water wash process. Contact
the factory for additional information if water wash is necessary.
Fig. 2: Test setup for measuring input reflected ripple currents iC and iS.
Fig. 3: Test setup for measuring output voltage ripple, startup and step
load transient waveforms.
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MDC_ICH_360W_A04 Page 9 of 17
ICH 360-Watt Series
Wide Input Isolated Half Brick DC-DC
Characteristic Curves - Efficiency and Power Dissipation
Fig. 4: ICH0130V1PC Efficiency Curve
Fig. 5: ICH0130V1PC Power Dissipation
Fig. 6: ICH0415V1PC Efficiency Curve
Fig. 7: ICH0415V1PC Power Dissipation
Fig. 8: ICH0513V1PC Efficiency Curve
Fig. 9: ICH0513V1PC Power Dissipation
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MDC_ICH_360W_A04 Page 10 of 17
ICH 360-Watt Series
Wide Input Isolated Half Brick DC-DC
Characteristic Curves – Derating vs. Baseplate Temperature
Fig. 10: ICH0130V1PC Derating Curve (Pout)
Fig. 11: ICH0130V1PC Derating Curve (Iout)
Fig. 12: ICH0415V1PC Derating Curve (Pout)
Fig. 13: ICH0415V1PC Derating Curve (Iout)
Fig. 14: ICH0513V1PC Derating Curve (Pout)
Fig.15: ICH0513V1PC Derating Curve (Iout)
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MDC_ICH_360W_A04 Page 11 of 17
ICH 360-Watt Series
Wide Input Isolated Half Brick DC-DC
Characteristic Waveforms - ICH0130V1PC
Fig. 16: Turn-on by ON/OFF transient (with Vin applied) at full rated
load current (resistive) at Vin = 24V. Top trace (C1): ON/OFF signal (5
V/div.). Bottom trace (C4): Output voltage (5 V/div.). Time: 5 ms/div.
Fig. 17: Turn-on by Vin (ON/OFF high) transient at full rated load current
(resistive) at Vin = 24V. Top trace (C2): Input voltage Vin (10 V/div.).
Bottom trace (C4): Output voltage (5 V/div.). Time: 100 ms/div.
Fig. 18: Output voltage response to load current step change 50% - 75%
- 50% (15A-22.5A-15A) with di/dt = 1A/µs at Vin = 24V. Top trace (C4):
Output voltage (200 mV/div.). Bottom trace (C3): Load current
(20A/div.). Co = 470 µf/70mΩ. Time: 1ms/div.
Fig. 19: Output voltage response to load current step change 50% 100% - 50% (15A-30A-15A) with di/dt = 1A/µs at Vin = 24V. Top trace
(C4): Output voltage (500 mV/div.). Bottom trace (C3): Load current
(20A/div.). Co = 470 µf/70mΩ. Time: 1ms/div.
Fig. 20: Output voltage ripple (100 mV/div.) at full rated load current into
a resistive load at Vin = 24V. Co= 470 µF/70mΩ. Time: 2 µs/div.
Fig. 21: Input reflected ripple current, ic (500 mA/mV), measured at
input terminals at full rated load current at Vin = 24V. Refer to Fig. 2 for
test setup. Time: 2 µs/div. RMS input ripple current is 1. 125*500mA =
560 mA.
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MDC_ICH_360W_A04 Page 12 of 17
ICH 360-Watt Series
Wide Input Isolated Half Brick DC-DC
Characteristic Waveforms - ICH0415V1PC
Fig. 22: Turn-on by ON/OFF transient (with Vin applied) at full rated load
current (resistive) at Vin = 24V. Top trace (C1): ON/OFF signal (5 V/
div.). Bottom trace (C4): Output voltage (10 V/div.). Time: 5 ms/div.
Fig. 23: Turn-on by Vin transient (ON/OFF high) at full rated load current
(resistive) at Vin = 24V. Top trace (C2): Input voltage Vin (10 V/div.).
Bottom trace (C4): Output voltage (10 V/div.). Time: 100 ms/div.
Fig. 24: Output voltage response to load current step change 50% - 75%
- 50% (7.5A-11.25A-7.5A) with di/dt = 1A/µs at Vin = 24V. Top trace
(C4): Output voltage (200 mV/div.). Bottom trace (C3): Load current
(10A/div.). Co = 470 µf/70mΩ. Time: 1ms/div.
Fig. 25: Output voltage response to load current step change 50% 100% - 50% (7.5A-15A-7.5A) with di/dt = 1A/µs at Vin = 24V. Top
trace (C4): Output voltage (500 mV/div.). Bottom trace (C3): Load
current (10 A/div.). Co = 470 µf/70mΩ. Time: 1ms/div.
Fig. 26: Output voltage ripple (200 mV/div.) at full rated load current into
a resistive load at Vin = 24V. Co= 470 µF/70mΩ. Time: 2 µs/div.
Fig. 27: Input reflected ripple current, ic (500 mA/mV), measured at
input terminals at full rated load current at Vin = 24V. Refer to Fig. 2 for
test setup. Time: 2 µs/div. RMS input ripple current is 1. 205*500mA =
602.5mA.
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MDC_ICH_360W_A04 Page 13 of 17
ICH 360-Watt Series
Wide Input Isolated Half Brick DC-DC
Characteristic Waveforms - ICH0513V1PC
Fig. 28: Turn-on by ON/OFF transient (with Vin applied) at full rated load
current (resistive) at Vin = 24V. Top trace (C1): ON/OFF signal (5 V/
div.). Bottom trace (C4): Output voltage (10 V/div.). Time: 5 ms/div.
Fig. 29: Turn-on by Vin transient (ON/OFF high) at full rated load current
(resistive) at Vin = 24V. Top trace (C2): Input voltage Vin (10 V/div.).
Bottom trace (C4): Output voltage (10 V/div.). Time: 100 ms/div.
Fig. 30: Output voltage response to load current step change 50% - 75%
- 50% (6.5A-9.75A-6.5A) with di/dt = 1A/µs at Vin = 24V. Top trace
(C4): Output voltage (200 mV/div.). Bottom trace (C3): Load current
(10A/div.). Co = 470µf/70mΩ. Time: 1ms/div.
Fig. 31: Output voltage response to load current step change 50% 100% - 50% (6.5A-13A-6.5A) with di/dt = 1A/µs at Vin = 24V. Top
trace (C4): Output voltage (500 mV/div.). Bottom trace (C3): Load
current (10A/div.). Co = 470µf/70mΩ. Time: 1ms/div.
Fig. 32: Output voltage ripple (200mV/div.) at full rated load current into
a resistive load at Vin = 24V. Co= 470 µF/70mΩ. Time: 2 µs/div.
Fig. 33: Input reflected ripple current, ic (500mA/mV), measured at input
terminals at full rated load current at Vin = 24V. Refer to Fig. 2 for
test setup. Time: 2µs/div. RMS input ripple current is 0.935*500mA =
549mA.
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MDC_ICH_360W_A04 Page 14 of 17
ICH 360-Watt Series
Wide Input Isolated Half Brick DC-DC
EMC Consideration:
The filter schematic for suggested input filter configuration as tested to meet the conducted emission limits of MIL-STD 461F CE102 Base
Curve is shown in Fig. 34. The plots of conducted EMI spectrum are shown in Fig. 35.
Note: Customer is ultimately responsible for the proper selection, component rating and verification of the suggested parts based on the
end application.
EARTH
Comp. Des.
C1, C2, C12, C14
C3, C4, C5, C6
C7, C8, C9, C10, C11, C13
L1
Description
470µF/50V/70mΩ Electrolytic Capacitor (Vishay MAL214699108E3 or equivalent)
4.7nF/1210/X7R/1500V Ceramic Capacitor
10µF/1210/X7R/50V Ceramic Capacitor
CM choke: L = 130µH, Llkg = 0.6µH (4 turns on toroid 22.1mm x 13.7mm x 7.92mm)
Fig. 34: Typical input EMI filter circuit to attenuate conducted emissions per MIL-STD-461F CE102 Base Curve.
a) Without input filter. CIN = 2 x 470µF/50V/70mΩ.
b) With input filter from Fig. 34.
Fig.35: Input conducted emissions measurement (Typ.) of ICH0415V1PC
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MDC_ICH_360W_A04 Page 15 of 17
ICH 360-Watt Series
Wide Input Isolated Half Brick DC-DC
Mechanical Specifications:
NOTES:
Unless otherwise specified:
All dimensions are in inches [millimeters]
Tolerances: x.xx in. ±0.02 in. [x.x mm ±0.5mm]
x.xxx in. ±0.010 in [x.xx mm ±0.25mm]
Torque fasteners into threaded mounting inserts at 10in.lbs.
or less. Greater torque may result in damage to unit and
void the warranty.
Input/Output Connections:
Pin
Name
1
-INPUT
Negative input voltage
Function
3
ON/OFF
TTL input with internal pull up, referenced to
-INPUT, used to turn converter on and off
4
+INPUT
Positive input voltage
5
+OUTPUT
7
TRIM
9
- OUTPUT
Positive output voltage
Output voltage trim
Negative output voltage
Notes:
1) Pinout is inconsistent between manufacturers of the half brick
converters. Make sure to follow the pin function and the pin number,
when laying out your board.
2) Pin diameter for the input pins of the ICH converters has diameter
0.081” due to high input current at low line, and is different from other
manufacturers of the half brick. Make sure to follow pin dimensions in
your application.
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MDC_ICH_360W_A04 Page 16 of 17
ICH 360-Watt Series
Wide Input Isolated Half Brick DC-DC
Packaging Information:
1. SHIPPING TUBE MATERIAL: ANTI-STATIC PVC
2. ALL END VIEW DIMENSIONS ARE INSIDE DIMENSIONS.
3. ALL DIMENSIONS ARE ± 0.010”.
4. CARDBOARD SHIPPING BOX IS 16” X 10” X 10”
5. MAXIMUM NUMBER OF UNITS (MPQ) PER BOX IS 120 CONVERTERS.
6. BOX IS TOP FILLED WITH ANTI-STATIC SHIPPING PEANUTS
Murata Power Solutions, Inc.
129 Flanders Road, Westborough MA 01581 U.S.A.
ISO 9001 and 14001 REGISTERED
This product is subject to the following operating
requirements and the Life and Safety Critical Application Sales
Policy: Refer to: http://www.murata-ps.com/requirements/
Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other technical
information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of
licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice.
© 2018 Murata Power Solutions, Inc.
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MDC_ICH_360W_A04 Page 17 of 17