TDK Network Card Half Brick iHG User Manual

Data Sheet: XetaiHG48070A033V, 3.3V/70A Output Half Brick Series  
Datasheet DC-DC Power Modules  
XetaiHG Half Brick  
48V Input, 3.3V/70A Output  
TDK Innoveta Inc.  
3320 Matrix Drive, Suite 100  
Plano, Texas 75082  
Phone (877) 498-0099 Toll Free  
Information furnished by TDK Innoveta is believed to be accurate and reliable. However, TDK Innoveta  
(469) 916-4747  
(877) 498-0143 Toll Free  
(214) 239-3101  
assumes no responsibility for its use, nor for any infringement of patents or other rights of third parties,  
which may result from its use. No license is granted by implication or otherwise under any patent or patent  
Fax  
rights of TDK Innoveta. TDK Innoveta components are not designed to be used in applications, such as life  
support systems, wherein failure or malfunction could result in injury or death. All sales are subject to TDK  
Innoveta’s Terms and Conditions of Sale, which are available upon request. Specifications are subject to  
change without notice.  
(877) 498-0099  
©2008 TDK Innoveta Inc.  
iHG Datasheet 2008-05-15 Revision 1.1  
1/16  
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Data Sheet: XetaiHG48070A033V, 3.3V/70A Output Half Brick Series  
Ordering information:  
Output  
Current/  
Power  
070  
Main  
Output  
Voltage  
033  
Product  
Identifier  
Package  
Size  
Input  
Voltage  
Output  
Units  
# of  
Outputs  
Mechanical  
Feature  
Electrical  
Feature Set  
Platform  
i
H
G
48  
A
V
-
0
02  
02-R  
Standard,  
RoHS  
0 - No base  
plate  
1- With base  
plate  
TDK  
Innoveta  
Xeta  
Half Brick  
36-75V  
70  
Amps  
033 – 3.3V  
Single  
Compliant  
Feature  
Set  
000  
On/Off  
Logic  
Positive  
Omit  
pin3  
Yes  
Pin  
Length  
0.145”  
Base-  
plate  
No  
Output OVP  
Output OCP  
OTP  
Latching  
Latching  
Auto-Recovery  
Auto-Recovery  
Auto-Recovery  
Auto-Recovery  
Auto-Recovery  
001  
002  
003  
Negative  
Positive  
Negative  
Yes  
Yes  
Yes  
Auto-Recovery  
Auto-Recovery  
Auto-Recovery  
0.145”  
0.145”  
0.145”  
No  
No  
No  
Auto-Recovery  
Auto-Recovery  
OVP: Over Voltage Protection; OCP: Over Current Protection; OTP: Over Temperature Protection.  
Product Offering:  
Maximum Output  
Code  
Input Voltage  
36V to 75V  
Output Voltage  
3.3V  
Output Current  
70A  
Efficiency  
90%  
Power  
iHG48070A033V-002-R  
231W  
TDK Innoveta Inc  
3320 Matrix Drive, Suite 100  
Richardson, Texas 75082  
Phone (877) 498-0099 Toll Free  
(469) 916-4747  
Fax  
(877) 498-0143 Toll Free  
(214) 239-3101  
(877) 498-0099  
©2008 TDK Innoveta Inc.  
iHG Datasheet 2008-05-15 Revision 1.1  
3/16  
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Data Sheet: XetaiHG48070A033V, 3.3V/70A Output Half Brick Series  
Mechanical Specification:  
Dimensions are in mm [in]. Unless otherwise specified tolerances are: x.x ± 0.5 [0.02], x.xx and x.xxx ± 0.25 [0.010].  
2.03 [0.080] Dia Pin  
3.00 [0.118] Dia Stand-off  
2 Places  
1.02 [0.040] Dia Pin  
1.83 [0.072] Dia Stand-off  
6 Places  
1
2
9
8
7
6
5
4
Recommeded hole pattern (top view)  
Pin Assignment:  
PIN  
1
2
FUNCTION  
PIN  
FUNCTION  
Trim  
Sense (+)  
Vout (+)  
Vin (+)  
On/Off  
N/A  
7
8
9
3
4
5
6
Vin (-)  
Vout (-)  
Sense (-)  
Pin base material is copper with matte tin plating. The maximum module weight is 63g.  
(877) 498-0099  
©2008 TDK Innoveta Inc.  
iHG Datasheet 2008-05-15 Revision 1.1  
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Data Sheet: XetaiHG48070A033V, 3.3V/70A Output Half Brick Series  
Absolute Maximum Ratings:  
Stress in excess of Absolute Maximum Ratings may cause permanent damage to the device.  
Characteristic  
Min  
Max  
Unit  
Notes & Conditions  
Continuous Input Voltage  
-0.5  
80  
Vdc  
Transient Input Voltage  
Isolation Voltage  
---  
---  
100  
1500  
125  
Vdc  
Vdc  
˚C  
100mS max.  
Storage Temperature  
-55  
Measured at the location specified in the thermal  
measurement figure.  
Operating Temperature Range (Tc)  
-40  
123  
˚C  
*
Engineering estimate  
Input Characteristics:  
Unless otherwise specified, specifications apply over all Rated Input Voltage, Resistive Load, and Temperature conditions.  
Characteristic  
Min  
Typ  
Max  
Unit  
Notes & Conditions  
Operating Input Voltage  
36  
48  
75  
Vdc  
Maximum Input Current  
Turn-on Voltage  
Turn-off Voltage  
Hysteresis  
---  
---  
---  
---  
---  
8
A
Vin = 0 to Vin,max, Io,max, Vo=Vo,nom  
34.2  
32.5  
1.7  
36  
---  
---  
Vdc  
Vdc  
Vdc  
Vo = 0 to 0.1*Vo,nom; on/off =on,  
Io=Io,max, Tc=25˚C  
Vo = 0 to 0.1*Vo,nom; Vin = Vi,nom,  
Io=Io,max,Tc=25˚C  
Io=Io,max,Tc=25˚C, Vo=0.1 to  
0.9*Vo,nom  
Startup Delay Time from application of input voltage  
Startup Delay Time from on/off  
---  
---  
---  
8
3
---  
---  
---  
mS  
mS  
mS  
Output Voltage Rise Time  
24  
Vin=0V to Vin,max and module on/off  
pin is in ‘off’ state  
Standby Current  
0
5
7
mA  
Inrush Transient  
---  
---  
---  
---  
14  
60  
0.1  
---  
---  
A2s  
See input/output ripple measurement  
figure; BW = 20 MHz  
Input Reflected Ripple  
Input Ripple Rejection  
mApp  
dB  
@120Hz  
*
Engineering Estimate  
Caution: The power modules are not internally fused. An external input line normal blow fuse with a maximum value of 15A is required; see the Safety  
Considerations section of the data sheet.  
(877) 498-0099  
©2008 TDK Innoveta Inc.  
iHG Datasheet 2008-05-15 Revision 1.1  
5/16  
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Data Sheet: XetaiHG48070A033V, 3.3V/70A Output Half Brick Series  
Electrical Data (continued):  
Operating at Tc = 25˚C unless otherwise specified  
Characteristic  
Output Voltage Initial Setpoint  
Min  
3.25  
Typ  
3.3  
Max  
3.35  
Unit  
Vdc  
Notes & Conditions  
Vin=Vin,nom; Io=Io,max  
Output Voltage Tolerance  
3.2  
---  
3.4  
Vdc  
Over all rated input voltage, load, and  
temperature conditions to end of life  
Vin=Vin,nom; Io=Io,max  
Efficiency  
---  
---  
---  
---  
0
90  
3
---  
%
mV  
mV  
mV  
A
Line Regulation  
Load Regulation  
Temperature Regulation  
Output Current  
10*  
10*  
50*  
70  
Vin=Vin,min to Vin,max  
Io=Io,min to Io,max  
1
20  
---  
Tc=Tc,min to Tc,max  
At Io < 20% of Io,max, the load transient  
performance may degrade slightly  
Output Current Limiting Threshold  
Short Circuit Current  
---  
---  
82  
2
---  
---  
A
A
Vo = 0.9*Vo,nom, Tc < Tc,max  
Vo = 0.25V, Tc = 25C (hiccup mode)  
Output Ripple and Noise Voltage  
---  
---  
25  
50*  
---  
mVpp  
Vin=48V and Tc=25˚C. Measured across one  
10uF, one 0.47uF, one 0.1uF ceramic  
capacitors, and one 220uF electrolytic  
capacitor – see input/output ripple  
5.5  
mVrms  
measurement figure; BW = 20MHz  
Output Voltage Adjustment Range  
Output Voltage Sense Range  
50  
---  
---  
---  
110  
---  
%Vo,nom  
%Vo,nom  
Dynamic Response:  
Recovery Time  
Vin=Vin,nom; load step from 50% to 75% of  
Io,max, di/dt = 0.1A/uS, with at least one  
0.1uF, one 0.47uF, one 10uF ceramic  
capacitors, and 220uF electrolytic capacitor  
across the output terminals  
---  
---  
200  
70  
---  
---  
µS  
Transient Voltage  
mV  
For applications with large step load changes  
and/or high di/dt load changes, please  
contact TDK Innoveta for support.  
Io=Io,max  
Output Voltage Overshoot during startup  
Switching Frequency  
0
0
0
mV  
kHz  
V
---  
260  
---  
Fixed  
Output Over Voltage Protection  
External Load Capacitance  
All line, load, and temperature conditions  
3.8*  
230  
4.1  
---  
4.4*  
40,000**  
uF  
All charge and pre-bias start conditions.  
Cext,min required for the 100% load dump.  
Minimum ESR > 2 mΩ  
Isolation Capacitance  
Isolation Resistance  
Vref  
---  
2000  
---  
---  
---  
pF  
All line, load, and temperature conditions  
15  
All line, load, and temperature conditions  
Required for trim calculation  
M  
1.225  
V
* Engineering Estimate  
** Contact TDK Innoveta for applications that require additional capacitance  
(877) 498-0099  
©2008 TDK Innoveta Inc.  
iHG Datasheet 2008-05-15 Revision 1.1  
6/16  
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Data Sheet: XetaiHG48070A033V, 3.3V/70A Output Half Brick Series  
Electrical Characteristics:  
94  
90  
86  
82  
78  
74  
35  
30  
25  
20  
15  
10  
5
0
7
14  
21  
28  
35  
42  
49  
56  
63  
70  
7
14  
21  
28  
35  
42  
49  
56  
63  
70  
Output Current (A)  
Output Current (A)  
Vin = 36V  
Vin = 48V  
Vin = 75V  
Vin = 60V  
Vin = 36V  
Vin = 48V  
Vin = 75V  
Vin = 60V  
Efficiency vs. Input Voltage at Ta=25C, (test in socket)  
Power Dissipation vs. Input Voltage at Ta=25C  
Start-up from on/off Switch at 48V input and Full Load.  
Ch. 1: ON/OFF Ch. 3: Vo Ch. 4: Io  
Typical Output Ripple at 48V Input and Full Load at  
Ta=25C Ch. 3: Vo  
Start-up from Input Voltage Application at Full Load.  
Transient Response. Load Step from 50% to 75% of  
Full Load with di/dt= 0.1A/uS. Ch. 1: Vo Ch. 3: Io  
Ch. 1: Vin  
Ch. 3: Vo  
Ch. 4: Io Load  
(877) 498-0099  
©2008 TDK Innoveta Inc.  
iHG Datasheet 2008-05-15 Revision 1.1  
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Data Sheet: XetaiHG48070A033V, 3.3V/70A Output Half Brick Series  
Electrical Characteristics (continued):  
3.6  
3
10  
8
2.4  
1.8  
1.2  
0.6  
0
6
4
2
0
0
10  
20  
30  
40  
50  
60  
70  
80  
90  
30  
35  
40  
45  
50  
55  
60  
65  
70  
75  
Output Current (A)  
Input Voltage (V)  
Vin = 36V  
Vin = 48V  
Vin = 75V  
Vin = 60V  
Io_min = 7A  
Io_mid = 35A  
Io_max = 70.7A  
Output Current Limit Characteristics vs. Input Voltage  
Typical Input Current vs. Input Voltage Characteristics  
3.3  
3.299  
3.298  
3.297  
3.296  
3.295  
3.299  
3.298  
3.297  
3.296  
3.295  
3.294  
7
14  
21  
28  
35  
42  
49  
56  
63  
70  
36  
40  
44  
48  
52  
56  
60  
64  
68  
72  
76  
Output Current (A)  
Input Voltage (V)  
Vin = 36V  
Vin = 48V  
Vin = 75V  
Vin = 60V  
Io_min = 7A  
Io_mid = 35A  
Io_max = 70.7A  
Typical Output Voltage vs. Load Current at Ta=25C.  
Typical Output Voltage vs. Input Voltage at Ta=25C.  
%
Change  
of Vout  
Trim  
Down  
Resistor  
(Kohm)  
%
Change  
of Vout  
Trim Up  
Resistor  
(Kohm)  
3.6  
3
2.4  
1.8  
1.2  
0.6  
0
-3%  
-5%  
31.33K  
18K  
+3%  
+5%  
57.16K  
34.57K  
17.63K  
-10%  
8K  
+10%  
e.g. trim up 5%  
30  
31  
32  
33  
34  
35  
36  
37  
38  
3.3  
5%  
2 (1+ 5%) +1  
Input Voltage (V)  
1.225  
Rup  
=
= 34.57(k)  
Io_min = 7A  
Io_mid = 35A  
Io_max = 70.7A  
Typical Output Voltage vs. Low Voltage Input Turn-on  
and Turn-off at Ta=25C  
Calculated Resistor Values for Output Voltage Adjustment  
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©2008 TDK Innoveta Inc.  
iHG Datasheet 2008-05-15 Revision 1.1  
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Data Sheet: XetaiHG48070A033V, 3.3V/70A Output Half Brick Series  
Electrical Characteristics (continued):  
1000  
100  
10  
1
10000  
1000  
100  
10  
0
0
2
4
6
8
10  
0
10  
20  
30  
40  
% Increase in Output Voltage, (%)  
% Decrease in Output Voltage, (%)  
Output Trim down curve for output voltage adjustment  
Trim up curve for output voltage adjustment  
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iHG Datasheet 2008-05-15 Revision 1.1  
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Data Sheet: XetaiHG48070A033V, 3.3V/70A Output Half Brick Series  
Thermal Performance:  
70  
60  
50  
40  
30  
20  
70  
60  
50  
40  
30  
20  
30  
40  
50  
60  
70  
80  
90  
100  
110  
120  
130  
30  
40  
50  
60  
70  
80  
90  
100  
110  
120  
130  
Ambient Temperature (C)  
Ambient Temperature (C)  
NC 0.3 m/s (60 LFM)  
1.5 m/s (300 LFM)  
0.5 m/s (100 LFM)  
2.0 m/s (400 LFM)  
1.0 m/s (200 LFM)  
3.0 m/s (600 LFM)  
NC 0.3 m/s (60 LFM)  
1.5 m/s (300 LFM)  
0.5 m/s (100 LFM)  
2.0 m/s (400 LFM)  
1.0 m/s (200 LFM)  
3.0 m/s (600 LFM)  
Max MOSFET Temperature  
Max MOSFET Temperature  
Maximum output current vs. ambient temperature at nominal  
input voltage for airflow rates natural convection (0.3m/s) to  
3.0m/s with airflow from pin 4 to 1.  
Maximum output current vs. ambient temperature at nominal  
input voltage for airflow rates natural convection (0.3m/s) to  
3.0m/s with airflow from pin 1 to pin 4.  
Thermal  
Measurement  
Location (Drain  
pad of MOSFET)  
Thermal measurement location – top view  
The thermal curves provided are based upon measurements made in TDK Innoveta’s experimental test setup that is  
described in the Thermal Management section. Due to the large number of variables in system design, TDK Innoveta  
recommends that the user verify the module’s thermal performance in the end application. The critical component  
should be thermo-coupled and monitored, and should not exceed the temperature limit specified in the derating curve  
above. It is critical that the thermocouple be mounted in a manner that gives direct thermal contact otherwise significant  
measurement errors may result.  
(877) 498-0099  
©2008 TDK Innoveta Inc.  
iHG Datasheet 2008-05-15 Revision 1.1  
10/16  
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Data Sheet: XetaiHG48070A033V, 3.3V/70A Output Half Brick Series  
Thermal Management:  
The cross section of the airflow passage is  
An important part of the overall system  
design process is thermal management;  
thermal design must be considered at all  
levels to ensure good reliability and lifetime  
of the final system. Superior thermal design  
and the ability to operate in severe  
application environments are key elements  
of a robust, reliable power module.  
rectangular with the spacing between the  
top of the module and a parallel facing PCB  
kept at a constant (0.5 in). The power  
module’s orientation with respect to the  
airflow direction can have a significant  
impact on the unit’s thermal performance.  
Adjacent PCB  
A finite amount of heat must be dissipated  
from the power module to the surrounding  
environment. This heat is transferred by the  
three modes of heat transfer: convection,  
conduction and radiation. While all three  
modes of heat transfer are present in every  
application, convection is the dominant  
mode of heat transfer in most applications.  
However, to ensure adequate cooling and  
proper operation, all three modes should be  
considered in a final system configuration.  
Module  
Centerline  
A
I
R
F
L
O
W
12.7  
(0.50)  
The open frame design of the power module  
provides an air path to individual  
components. This air path improves  
convection cooling to the surrounding  
environment, which reduces areas of heat  
concentration and resulting hot spots.  
76 (3.0)  
AIRFLOW  
Air Velocity and Ambient Temperature  
Air Passage  
Test Setup: The thermal performance data  
of the power module is based upon  
measurements obtained from a wind tunnel  
test with the setup shown in the wind tunnel  
figure. This thermal test setup replicates the  
typical thermal environments encountered in  
most modern electronic systems with  
Measurement Location  
Centerline  
Wind Tunnel Test Setup Figure  
Dimensions are in millimeters (inches)  
Thermal Derating: For proper application of  
the power module in a given thermal  
environment, output current derating curves  
are provided as a design guideline in the  
Thermal Performance section for the power  
module of interest. The module temperature  
should be measured in the final system  
configuration to ensure proper thermal  
management of the power module. For  
thermal performance verification, the module  
temperature should be measured at the  
distributed  
power  
architectures.  
The  
electronic equipment in networking, telecom,  
wireless, and advanced computer systems  
operates in similar environments and utilizes  
vertically mounted printed circuit boards  
(PCBs) or circuit cards in cabinet racks.  
The power module is mounted on a 0.087  
inch thick, 12-layer, 2oz/layer PCB and is  
vertically oriented within the wind tunnel.  
Power is routed on the internal layers of the  
PCB. The outer copper layers are thermally  
decoupled from the converter to better  
simulate the customer’s application. This  
also results in a more conservative derating.  
location  
indicated  
in  
the  
thermal  
measurement location figure in the Thermal  
Performance section for the power module  
of interest. In all conditions, the power  
module should be operated below the  
maximum operating temperature shown on  
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iHG Datasheet 2008-05-15 Revision 1.1  
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Data Sheet: XetaiHG48070A033V, 3.3V/70A Output Half Brick Series  
the derating curve. For improved design  
margins and enhanced system reliability, the  
power module may be operated at  
temperatures below the maximum rated  
operating temperature.  
Heat transfer by convection can be  
enhanced by increasing the airflow rate that  
the power module experiences.  
The  
maximum output current of the power  
module is a function of ambient temperature  
(TAMB) and airflow rate as shown in the  
thermal performance figures on the thermal  
performance page for the power module of  
interest. The curve in the figures is shown  
for natural convection and up. The data for  
the natural convection condition has been  
collected at 0.3 m/s (60 ft/min) of airflow,  
which is the typical airflow generated by  
other heat dissipating components in many  
of the systems that these types of modules  
are used in.  
In the final system  
configurations, the airflow rate for the natural  
convection condition can vary due to  
temperature gradients from other heat  
dissipating components.  
(877) 498-0099  
©2008 TDK Innoveta Inc.  
iHG Datasheet 2008-05-15 Revision 1.1  
12/16  
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Data Sheet: XetaiHG48070A033V, 3.3V/70A Output Half Brick Series  
Operating Information:  
Over-Current-Protection (OCP): The power  
The standard on/off logic is positive logic. The  
modules have current limit protection to  
protect the module during output overload and  
short circuit conditions. During overload  
conditions, the power modules may protect  
themselves by entering a hiccup current limit  
mode. The modules will operate normally once  
the output current returns to the specified  
power module will turn on if terminal 2 is left  
open and will be off if terminal 2 is connected  
to terminal 4. An optional negative logic is  
available. The power module will turn on if  
terminal 2 is connected to terminal 4, and it  
will be off if terminal 2 is left open.  
operating range.  
A
latched over-current  
protection option is also available. Consult the  
TDK Innoveta technical support for details.  
Vin (+)  
On/ Off  
Output Over-Voltage-Protection (OVP): The  
power modules have  
a
control circuit,  
independent of the main control loop, that  
reduces the risk of over voltage appearing at  
the output of the power module during a fault  
condition. If there is a fault in the voltage  
regulation loop, the over voltage protection  
circuitry will cause the power module to shut  
down. The module will try to auto re-start in 1  
+/- 0.2 sec time period. An optional feature  
with latched OVP protection can also be  
offered. Consult the TDK Innoveta technical  
support for details.  
Vin(-)  
An On/Off Control Circuit  
Output Voltage Adjustment: The output  
voltage of the power module may be adjusted  
by using an external resistor connected  
between the Vout trim terminal (pin 7) and  
either the Sense (+) or Sense (-) terminal. If  
the output voltage adjustment feature is not  
used, pin 7 should be left open. Care should  
be taken to avoid injecting noise into the  
power module’s trim pin. A small 0.01uF  
capacitor between the power module’s trim pin  
and Sense (-) pin may help to avoid this.  
Thermal Protection: When the power  
modules exceed the maximum operating  
temperature, the modules may turn-off to  
safeguard the power unit against thermal  
damage. The module will auto restart as the  
unit is cooled below the over temperature  
threshold.  
A
latched  
over-temperature  
protection option is also available. Consult the  
TDK Innoveta technical support for details.  
Vout(+)  
Remote On/Off: - The power modules have  
an internal remote on/off circuit. The user must  
supply an open-collector or compatible switch  
between the Vin(-) pin and the on/off  
Sense(+)  
Trim  
pin. The maximum voltage generated by the  
power module at the on/off terminal is 15V.  
The maximum allowable leakage current of  
the switch is 50uA. The switch must be  
capable of maintaining a low signal Von/off <  
0.8V while sinking 400uA.  
Rdown  
Sense(-)  
Vout(-)  
Circuit to decrease output voltage  
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Data Sheet: XetaiHG48070A033V, 3.3V/70A Output Half Brick Series  
With a resistor between the trim and Sense (-)  
terminals, the output voltage is adjusted down.  
Electrical Characteristics section for the power  
module of interest.  
To adjust the output voltage down  
a
percentage of Vout (%Vo) from Vo,nom, the  
trim resistor should be chosen according to  
the following equation:  
The maximum power available from the power  
module is fixed. As the output voltage is  
trimmed up, the maximum output current must  
be decreased to maintain the maximum rated  
power of the module.  
100%  
Rdown = (  
2) kΩ  
down  
As the output voltage is trimmed, the output  
over-voltage set point is not adjusted.  
Trimming the output voltage too high may  
cause the output over voltage protection circuit  
to be triggered.  
where  
Vnom Vdesired  
=
100%  
down  
Vnom  
The current limit set point does not increase  
as the module is trimmed down, so the  
available output power is reduced.  
Remote Sense: The power modules feature  
remote sense to compensate for the effect of  
output distribution drops. The output voltage  
sense range defines the maximum voltage  
allowed between the output power terminals  
and output sense terminals, and it is found on  
the electrical data page for the power module  
of interest. If the remote sense feature is not  
being used, the Sense(+) terminal should be  
connected to the Vo(+) terminal and the  
Sense (-) terminal should be connected to the  
Vo(-) terminal. The output voltage at the Vo(+)  
and Vo(-) terminals can be increased by either  
the remote sense or the output voltage  
adjustment feature. The maximum voltage  
increase allowed is the larger of the remote  
sense range or the output voltage adjustment  
range; it is not the sum of both.  
Vout(+)  
Sense(+)  
Rup  
Trim  
Sense(-)  
Vout(-)  
Circuit to increase output voltage  
With a resistor between the trim and sense (+)  
terminals, the output voltage is adjusted up.  
To adjust the output voltage up a percentage  
of Vout (%Vo) from Vo,nom the trim resistor  
should be chosen according to the following  
equation:  
As the output voltage increases due to the use  
of the remote sense, the maximum output  
current must be decreased for the power  
module to remain below its max power rating.  
Vnom  
2
(1+ up  
)
+
1
EMC Considerations: TDK Innoveta power  
modules are designed for use in a wide variety  
of systems and applications. For assistance  
with designing for EMC compliance, please  
contact TDK Innoveta technical support.  
V
ref  
Rup =  
kΩ  
up  
where  
Vdesired Vnom  
up =  
100% and  
Vnom  
Input Impedance: The source impedance of  
the power feeding the DC/DC converter  
module will interact with the DC/DC converter.  
To minimize the interaction, a 220-470uF input  
electrolytic capacitor should be present.  
The value of Vref is found in the Electrical  
Data section for the power module of interest.  
Trim up and trim down curves are found in the  
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Data Sheet: XetaiHG48070A033V, 3.3V/70A Output Half Brick Series  
Input/Output Ripple and Noise Measurements:  
12uH  
1
2
Battery  
+
+
Voutput  
-
RLoad  
Cext  
Cin  
Vinput  
-
220uF  
esr<0.1  
100KHz  
esr<0.7  
100KHz  
Ground Plane  
The input reflected ripple is measured with a current probe and oscilloscope. The ripple current is the current through the  
12uH inductor. The capacitor Cin shall be at least 100uF/100V. One 220uF or two 100uF/100V capacitors in parallel are  
recommended.  
The output ripple measurement is made approximately 9 cm (3.5 in.) from the power module using an oscilloscope and  
BNC socket. The capacitor Cext is located about 5 cm (2 in.) from the power module; its value varies from code to code  
and is found on the electrical data page for the power module of interest under the ripple & noise voltage specification in  
the Notes & Conditions column.  
When the supply to the DC-DC converter is  
less than 60Vdc, the power module meets all  
Safety Considerations:  
of the requirements for SELV. If the input  
voltage is a hazardous voltage that exceeds  
60Vdc, the output can be considered SELV  
only if the following conditions are met:  
1) The input source is isolated from the  
ac mains by reinforced insulation.  
2) The input terminal pins are not  
accessible.  
All TDK Innoveta products are certified to  
regulatory standards by an independent,  
Certified Administrative Agency laboratory.  
UL 1950, 3rd edition (US & Canada), and  
other global certifications are typically  
obtained for each product platform.  
Various safety agency approvals are pending  
on the iHG product family. For safety agency  
approval of the system in which the DC-DC  
power module is installed, the power module  
must be installed in compliance with the  
creepage and clearance requirements of the  
safety agency. The isolation is basic  
insulation. For applications requiring basic  
insulation, care must be taken to maintain  
minimum creepage and clearance distances  
when routing traces near the power module.  
3) One pole of the input and one pole of  
the output are grounded or both are  
kept floating.  
4) Single fault testing is performed on  
the end system to ensure that under a  
single fault, hazardous voltages do  
not appear at the module output.  
To preserve maximum flexibility, the power  
modules are not internally fused. An external  
input line normal blow fuse with the maximum  
rating stipulated in the Electrical Data section  
is required by safety agencies. A lower value  
fuse can be selected based upon the  
maximum dc input current and maximum  
inrush energy of the power module.  
As part of the production process, the power  
modules are hi-pot tested from primary and  
secondary at a test voltage of 1500Vdc. The  
case pin is considered a primary pin for the  
purpose of hi-pot testing.  
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Data Sheet: XetaiHG48070A033V, 3.3V/70A Output Half Brick Series  
Reliability:  
Quality:  
The power modules are designed using TDK  
Innoveta’s stringent design guidelines for  
component derating, product qualification, and  
design reviews. Early failures are screened  
out by both burn-in and an automated final  
test. The MTBF is calculated to be greater  
than 3M hours using the Telcordia TR-332  
calculation method.  
TDK Innoveta’s product development process  
incorporates advanced quality planning tools  
such as FMEA and Cpk analysis to ensure  
designs are robust and reliable. All products  
are assembled at ISO certified assembly  
plants.  
Warranty:  
Improper handling or cleaning processes can  
adversely affect the appearance, testability,  
and reliability of the power modules. Contact  
TDK Innoveta technical support for guidance  
regarding proper handling, cleaning, and  
soldering of TDK Innoveta’s power modules.  
TDK Innoveta’s comprehensive line of power  
solutions includes efficient, high-density DC-  
DC converters. TDK Innoveta offers a three-  
year limited warranty. Complete warranty  
information is listed on our web site or is  
available upon request from TDK Innoveta.  
TDK Innoveta Inc.  
3320 Matrix Drive, Suite 100  
Plano, Texas 75082  
Phone (877) 498-0099 Toll Free  
(469) 916-4747  
Information furnished by TDK Innoveta is believed to be accurate and reliable. However, TDK Innoveta  
assumes no responsibility for its use, nor for any infringement of patents or other rights of third parties,  
which may result from its use. No license is granted by implication or otherwise under any patent or patent  
rights of TDK Innoveta. TDK Innoveta components are not designed to be used in applications, such as life  
support systems, wherein failure or malfunction could result in injury or death. All sales are subject to TDK  
Innoveta’s Terms and Conditions of Sale, which are available upon request. Specifications are subject to  
change without notice.  
Fax  
(877) 498-0143 Toll Free  
(214) 239-3101  
(877) 498-0099  
©2008 TDK Innoveta Inc.  
iHG Datasheet 2008-05-15 Revision 1.1  
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