TDK Power Supply iHA48060A012V User Manual

Advanced Data Sheet: VetaÒ iHA48060A012V*, 1.2V/60A Output Half Brick  
Advanced Datasheet DC-DC Power Modules  
VetaÒ iHA48060A012V* Half Brick Series  
48V Input, 1.2V/60A Output  
TDK Innoveta Inc.  
3320 Matrix Drive, Suite 100  
Richardson, Texas 75082  
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  
Phone (877) 498-0099 Toll Free  
third parties, which may result from its use. No license is granted by implication or otherwise under  
(469) 916-4747  
any patent or patent rights of TDK Innoveta. TDK Innoveta components are not designed to be used  
Fax  
(877) 498-0143 Toll Free  
(214) 239-3101  
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. TDK logo is a trademark or  
registered trademark of TDK Corporation.  
(877) 498-0099  
©2007 TDK Innoveta Inc.  
iHA Datasheet 040207  
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Advanced Data Sheet: VetaÒ iHA48060A012V*, 1.2V/60A Output Half Brick  
Ordering information:  
Output  
Current/  
Power  
Main  
Output  
Voltage  
Product  
Identifier  
Input  
Voltage  
Output  
Units  
# of  
Outputs  
Safety  
Class  
Package Size  
Platform  
Feature Set  
i
H
A
48  
060  
A
033  
V
-
0
00  
00 – Standard  
TDK Innoveta  
Half Brick  
VetaÒ  
36-75V  
60  
Amps  
033 – 3.3V  
Single  
Feature  
On/Off  
Logic  
Omit  
pin3  
No  
Threaded  
Inserts  
Pin  
Output OVP  
Output OCP  
OTP  
Set  
00  
01  
02  
03  
04  
05  
06  
07  
Length  
0.145”  
0.145”  
0.145”  
0.145”  
0.110”  
0.110”  
0.110”  
0.110”  
Positive  
Negative  
Positive  
Negative  
Positive  
Negative  
Positive  
Negative  
Latching  
Latching  
Auto-Recovery  
Auto-Recovery  
Latching  
Latching  
Auto-Recovery  
Auto-Recovery  
Auto-Recovery  
Auto-Recovery  
Auto-Recovery  
Auto-Recovery  
Auto-Recovery  
Auto-Recovery  
Auto-Recovery  
Auto-Recovery  
Auto-Recovery  
Auto-Recovery  
Auto-Recovery  
Auto-Recovery  
Auto-Recovery  
Auto-Recovery  
Auto-Recovery  
Auto-Recovery  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
No  
Yes  
Yes  
No  
No  
Yes  
Yes  
OVP: Over Voltage Protection; OCP: Over Current Protection; OTP: Over Temperature Protection.  
Product Offering:  
Maximum Output  
Code  
Input Voltage  
Output Voltage  
Output Current  
Efficiency  
Power  
iHA48060A012V-000  
iHA48060A015V-000  
iHA48060A018V-000  
iHA48060A025V-000  
iHA48060A033V-000  
iHA48040A033V-000  
iHA48060A050V-000  
iHA48040A050V-000  
iHA48025A120V-000  
iHA48013A240V-000  
iHA48011A280V-000  
iHA48016A280V-000  
36V to 75V  
36V to 75V  
36V to 75V  
36V to 75V  
36V to 75V  
36V to 75V  
36V to 75V  
36V to 75V  
36V to 75V  
36V to 75V  
36V to 75V  
40V to 60V  
1.2V  
1.5V  
60A  
60A  
60A  
60A  
60A  
40A  
60A  
40A  
25A  
12.5A  
11A  
16A  
72W  
83%  
86%  
90W  
1.8V  
108W  
150W  
198W  
132W  
300W  
200W  
300W  
300W  
308W  
450W  
86.5%  
89%  
2.5V  
3.3V  
90%  
3.3V  
90%  
5.0V  
90%  
5.0V  
91%  
12.0V  
24.0V  
28.0V  
28.0V  
91.5%  
91%  
91%  
93.5%  
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  
©2007 TDK Innoveta Inc.  
iHA Datasheet 040207  
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Advanced Data Sheet: VetaÒ iHA48060A012V*, 1.2V/60A Output Half Brick  
Mechanical Specification:  
Unless otherwise specified tolerances are: x.x ± 0.5 mm [x.xx ± 0.02 in.], x.xx +/- 0.25 mm [x.xxx +/- 0.010 in.]  
Recommended Hole Pattern: (top view)  
Pin Assignment:  
PIN  
1
FUNCTION  
Vin (+)  
PIN  
7
FUNCTION  
Trim  
2
On/Off  
8
Sense (+)  
Vout (+)  
3
Case (Omit – optional)  
Vin (-)  
9
4
5
Vout (-)  
6
Sense (-)  
(877) 498-0099  
©2007 TDK Innoveta Inc.  
iHA Datasheet 040207  
4/16  
 
Advanced Data Sheet: VetaÒ iHA48060A012V*, 1.2V/60A Output Half Brick  
Absolute Maximum Ratings:  
Stress in excess of Absolute Maximum Ratings may cause permanent damage to the device.  
Characteristic  
Min  
-0.5  
---  
Max  
80  
Unit  
Notes & Conditions  
Continuous Input Voltage  
Transient Input Voltage  
Isolation Voltage  
Vdc  
100  
1500  
Vdc  
Vdc  
100mSmax.  
---  
Storage Temperature  
-55  
125  
°C  
Maximum base plate temperature. Measured at the  
location specified in the thermal m easurement  
figure.  
Operating Temperature Range (Tc)  
-40  
115*  
°C  
Bare component side of metal board shall be  
convex.  
Flatness  
0.006  
In.  
·
Engineering estimate  
Common Input Characteristics:  
Unless otherwise specified, specifications apply over all Rated Input Voltage, Resistive Load, and Temperature conditions.  
Characteristic  
Min  
36  
---  
Typ  
48  
Max  
75  
36  
---  
Unit  
Notes & Conditions  
Operating Input Voltage  
Turn-on Voltage  
Vdc  
34.6  
32.7  
1.9  
79  
Vdc  
Vdc  
Vdc  
Vdc  
Vdc  
Vdc  
Turn-off Voltage  
30  
0.5  
---  
Hysteresis  
---  
Input High Voltage Turn-off  
Input High Voltage Turn-on  
Hysteresis  
80  
---  
75  
---  
77  
2
---  
Vo = 0 to 0.1*Vo,nom; on/off =on,  
Io=Io,max, Tc=25°C  
Startup Delay Time from application of input voltage  
Startup Delay Time from on/off  
---  
15  
---  
mS  
Vo = 0 to 0.1*Vo,nom; Vin = Vi,nom,  
Io=Io,max,Tc=25°C  
---  
---  
10  
---  
---  
mS  
A2s  
Inrush Transient  
0.06  
* Engineering estimate  
Electrical Data:  
Input Characteristic  
Maximum Input Current  
Output Voltage Rise Time  
Min  
---  
Typ  
---  
Max  
Unit  
Notes & Conditions  
2.6*  
---  
A
Vin = 0 to Vin,max, Io,max, Vo=Vo,nom  
Io=Io,max,Tc=25°C, Vo=0.1 to 0.9*Vo,nom  
---  
20  
mS  
See input/output ripple measurement figure;  
BW = 20 MHz  
Input Reflected Ripple  
---  
---  
12  
38  
---  
---  
mApp  
dB  
Input Ripple Rejection  
* Engineering estimate  
@120Hz  
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©2007 TDK Innoveta Inc.  
iHA Datasheet 040207  
5/16  
 
Advanced Data Sheet: VetaÒ iHA48060A012V*, 1.2V/60A Output Half Brick  
Electrical Data (continued):  
Operating at Tc = 25°C unless otherwise specified  
Output Characteristic  
Min  
Typ  
Max  
Unit  
Vdc  
Vdc  
Notes & Conditions  
Vin=Vin,nom; Io=Io,max  
Output Voltage Initial Setpoint  
Output Voltage Tolerance  
1.18  
1.2  
1.22  
1.16  
--  
1.24  
Over all rated input voltage, load, and  
temperature conditions to end of life  
Efficiency  
---  
---  
---  
---  
0
83  
1
---  
2*  
%
Vin=Vin,nom; Io=Io,max  
Vin=Vin,min to Vin,max  
Io=Io,min to Io,max  
Line Regulation  
Load Regulation  
Temperature Regulation  
Output Current  
mV  
mV  
mV  
A
4
6*  
10  
---  
15*  
60  
Tc=Tc,min to Tc,max  
At loads less than 25% of Io,max the module  
will continue to regulate the output voltage,  
but the output ripple may increase  
Output Current Limiting Threshold  
61  
76  
90  
A
Vo = 0.9*Vo,nom, Tc<Tc,max  
Short Circuit Current  
---  
---  
76  
55  
---  
A
Vo = 0.25V  
Output Ripple and Noise Voltage  
60  
mVpp  
Measured across one 47uF, one 1uF and  
one 0.1uF ceramic capacitors – see  
input/output ripple measurement figure; BW =  
20MHz  
---  
15  
18  
mVrms  
Output Voltage Adjustment Range  
Output Voltage Sense Range  
50  
---  
---  
---  
110  
10  
%Vo,nom  
%Vo,nom  
Dynamic Response:  
Recovery Time  
di/dt = 0.1A/uS, Vin=Vin,nom; load step from  
50% to 75% of Io,max  
---  
---  
0.25  
35  
---  
---  
mS  
mV  
Transient Voltage  
For applications with large step load changes  
and/or high di/dt load changes, please  
contact TDK Innoveta for support.  
Output Voltage Overshoot during startup  
Switching Frequency  
---  
---  
---  
50  
---  
10  
0
240  
1.5  
---  
---  
---  
mV  
kHz  
V
Io=Io,max  
Fixed  
Output Over Voltage Protection  
External Load Capacitance  
Isolation Capacitance  
---  
All line, load, and temperature conditions  
60000**  
---  
uF  
pF  
2000  
---  
All line, load, and temperature conditions  
All line, load, and temperature conditions  
Isolation Resistance  
---  
MW  
Vref  
1.225  
V
Required for trim calculation  
* Engineering Estimate  
** Contact TDK Innoveta for applications that require additional capacitance  
Caution: The power modules are not internally fused. An external input line normal blow fuse with a maximum value of 20A is required, see  
the Safety Considerations section of the data sheet.  
(877) 498-0099  
©2007 TDK Innoveta Inc.  
iHA Datasheet 040207  
6/16  
 
Advanced Data Sheet: VetaÒ iHA48060A012V*, 1.2V/60A Output Half Brick  
Electrical Characteristics:  
iHA48060A012V-001 Efficiency  
iHA48060A012V-001 Power Dissipation  
Ta = 25 Deg C.  
Ta = 25 Deg C.  
90  
85  
80  
75  
70  
16  
14  
12  
10  
8
6
4
2
6
12  
18  
24  
30  
36  
42  
48  
54  
60  
6
12  
18  
24  
30  
36  
42  
48  
54  
60  
Output Current (A)  
Output Current (A)  
Vin = 36V  
Vin = 48V  
Vin = 75V  
Vin = 36V  
Vin = 48V  
Vin = 75V  
iHA48060A012V-001 Typical Efficiency vs. Output  
Current at Ta=25 degrees.  
iHA48060A012V-001 Typical Power Dissipation vs.  
Output current at Ta=25 degrees  
iHA48060A012V-001 Load Regulation  
Ta = 25 Deg C.  
1.205  
1.2045  
1.204  
1.2035  
1.203  
1.2025  
1.202  
1.2015  
6
12  
18  
24  
30  
36  
42  
48  
54  
60  
Output Current (A)  
Vin = 36V  
Vin = 48V  
Vin = 75V  
iHA48060A012V-001 Typical Output Voltage vs. Load  
Current at Ta = 25 degrees  
iHA48060A012V-001 Typical startup characteristic  
from on/off at full load. Upper trace - on/off signal,  
lower trace – output voltage  
iHA48060A012V-001 Typical startup characteristic  
from input voltage application at full load. Upper trace -  
input voltage, lower trace – output voltage  
iHA48060A012V-001 Typical transient response.  
Load step from 50% to 75% of full load with 0.1A/uS.  
Lower trace – output current , upper trace – output  
voltage  
(877) 498-0099  
©2007 TDK Innoveta Inc.  
iHA Datasheet 040207  
7/16  
 
Advanced Data Sheet: VetaÒ iHA48060A012V*, 1.2V/60A Output Half Brick  
Electrical Characteristics (continued):  
iHA48060A012V-001 Current Limit  
Ta = 25 Deg C.  
1.4  
1.2  
1
0.8  
0.6  
0.4  
0.2  
0
6
16  
26  
36  
46  
56  
66  
76  
86  
Output Current (A)  
Vin = 36V  
Vin = 48V  
Vin = 75V  
iHA48060A012V-001 Typical Output Current Limit  
Characteristics vs. Input Voltage at Ta=25 degrees.  
iHA48060A012V-001 Typical Output Ripple at nominal  
Input voltage and full load with external capacitors  
47uF+1uF+0.1uF at Ta=25 degrees  
Input Current Vs. Input Voltage  
Output Voltage Vs. Input Voltage  
Ta = 25 Deg C.  
Ta = 25 Deg C.  
3
2.5  
2
1.6  
1.2  
0.8  
0.4  
0
Vin decreasing  
turn-off  
Vin increasing  
turn-on  
1.5  
1
0.5  
0
30  
35  
40  
45  
50  
55  
60  
65  
70  
75  
30  
32  
34  
36  
38  
Input Voltage (V)  
Input Voltage (V)  
Io_min = 6.03A  
Io_mid = 30.26A  
Io_max = 60.09A  
Io_min = 6.03A  
Io_mid = 30.26A  
Io_max = 60.09A  
iHA48060A012V-001 Typical Input Current vs. Input  
Voltage Characteristics at Ta=25 degrees.  
iHA48060A012V-001 Typical Output Voltage vs. Input  
Voltage Turn-on / Turn-off Characteristics – low voltage at  
Ta=25 degrees.  
Desired  
decreased  
Vout  
Trim  
Down  
Resistor Vout  
(W)  
Desired  
increased Resistor  
Trim Up  
Output Voltage Vs. Input Voltage  
(W)  
1.5  
1.08V  
1.14V  
1.16V  
8.61K  
18.29K  
27.97K  
1.24V  
0.259K  
1
1.26V  
1.32V  
0.143K  
0.0275K  
Vin decreasing  
turn-on  
Vin increasing  
turn-off  
0.5  
0
e.g. trim up to 1.26V  
1.26´ (1.2- 0.968´ 1.225)  
Rup=  
- 0.1= 0.143kW  
76  
78  
Input Voltage (V)  
80  
1.225´ (1.26- 1.2)  
iHA48060A012V-001 Typical Output Voltage vs. Input  
Voltage Turn-on / Turn-off Characteristics – high  
voltage at Ta=25 degrees.  
iHA48060A012V-001 Calculated resistor values for output  
voltage adjustment  
(877) 498-0099  
©2007 TDK Innoveta Inc.  
iHA Datasheet 040207  
8/16  
 
Advanced Data Sheet: VetaÒ iHA48060A012V*, 1.2V/60A Output Half Brick  
Electrical Characteristics (continued):  
1000  
100  
10  
10.00  
1.00  
0.10  
0.01  
1
1.20  
1.22  
1.24  
1.26  
1.28  
1.30  
1.32  
0.65 0.70 0.75 0.80 0.85 0.90 0.95 1.00 1.05 1.10 1.15 1.20  
Desired Decreased Output Voltage (V)  
Desired Increased Output Voltage (V)  
iHA48060A012V-001 Trim down curve for output  
voltage adjustment  
iHA48060A012V-001 Trim up curve for output voltage  
adjustment  
(877) 498-0099  
©2007 TDK Innoveta Inc.  
iHA Datasheet 040207  
9/16  
 
Advanced Data Sheet: VetaÒ iHA48060A012V*, 1.2V/60A Output Half Brick  
Thermal Performance:  
60  
50  
40  
30  
20  
10  
30  
40  
50  
60  
70  
80  
90  
100  
110  
120  
Ambient Temperature (o C)  
NC (0.3 m/s, 60 LFM)  
IMS LIMIT 1.0 m/s (200 LFM)  
1.0 m/s (200 LFM)  
IMS LIMIT => 1.0 m/s (200 LFM)  
2.0 m/s (400 LFM)  
<
iHA48060A012V-001 maximum output current vs.  
ambient temperature at nominal input voltage for airflow  
rates natural convection 0.3 m/s (60lfm) to 3.0m/s  
(600lfm) with airflow from output to input.  
iHA48060A012V-001 maximum output current vs.  
ambient temperature at nominal input voltage for airflow  
rates natural convection 0.3 m/s (60lfm) to 3.0m/s  
(600lfm). Airflow from Vout (+) to Vout (-) with the  
module output side on the left.  
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  
©2007 TDK Innoveta Inc.  
iHA Datasheet 040207  
10/16  
 
Advanced Data Sheet: VetaÒ iHA48060A012V*, 1.2V/60A Output Half Brick  
top of the module and a parallel facing PCB  
kept at a constant (0.5 in). The power  
Thermal Management:  
module’s orientation with respect to the  
An important part of the overall system  
airflow direction can have  
a
significant  
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.  
impact on the unit’s thermal performance.  
Adjacent PCB  
Module  
Centerline  
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.  
A
I
R
F
L
O
W
12.7  
(0.50)  
76 (3.0)  
AIRFLOW  
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.  
Air Velocity and Ambient Temperature  
Measurement Location  
Air Passage  
Centerline  
Wind Tunnel Test Setup Figure  
Dimensions are in millimeters (inches)  
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  
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 (PCBs) or circuit cards in  
cabinet racks.  
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  
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.  
The power module is mounted on a 0.062  
inch thick, 6 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.  
The cross section of the airflow passage is  
rectangular with the spacing between the  
(877) 498-0099  
©2007 TDK Innoveta Inc.  
iHA Datasheet 040207  
11/16  
 
Advanced Data Sheet: VetaÒ iHA48060A012V*, 1.2V/60A Output Half Brick  
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 curves in the figures are shown  
for natural convection through 3 m/s (600  
ft/min). 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.  
Standard heatsink kits are available from  
TDK Innoveta for vertical module mounting  
in two different orientations (longitudinal –  
perpendicular to the direction of the pins and  
transverse – parallel to the direction of the  
pins). The heatsink kit contains four M3 x  
0.5 steel mounting screws and a precut  
thermal interface pad for improved thermal  
resistance between the power module and  
the heatsink. The screws should be installed  
using a torque-limiting driver set between  
0.35 and 0.55 Nm (3-5 in-lbs).  
During heatsink assembly, the base-plate to  
heatsink interface must be carefully  
managed. A thermal pad may be required  
to reduce mechanical-assembly-related  
stresses  
and  
improve  
the  
thermal  
connection. Please contact TDK Innoveta  
Engineering for recommendations on this  
subject.  
Heatsink Usage: For applications with  
demanding environmental requirements,  
such as higher ambient temperatures or  
higher power dissipation, the thermal  
performance of the power module can be  
improved by attaching a heatsink or cold  
plate. The iHx platform is designed with a  
base plate with four M3 X 0.5 through-  
threaded mounting fillings for attaching a  
heatsink or cold plate. The addition of a  
heatsink can reduce the airflow requirement  
and ensure consistent operation and  
extended reliability of the system. With  
improved thermal performance, more power  
can be delivered at a given environmental  
condition.  
The system designer must use an accurate  
estimate or actual measurement of the  
internal airflow rate and temperature when  
doing the heatsink thermal analysis. For  
each application, a review of the heatsink fin  
orientation should be completed to verify  
proper fin alignment with airflow direction to  
maximize the heatsink effectiveness. With  
respect to TDK Innoveta standard heatsinks,  
contact TDK Innoveta for the latest  
performance data.  
(877) 498-0099  
©2007 TDK Innoveta Inc.  
iHA Datasheet 040207  
12/16  
 
Advanced Data Sheet: VetaÒ iHA48060A012V*, 1.2V/60A Output Half Brick  
It is recommended that the power module be  
kept off for at least 100mS each time it is  
turned off.  
Operating Information:  
Over-Current Protection: The power  
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 operating range. There is a typical  
delay of 2mS from the time an overload  
condition appears at the module output until  
the hiccup mode will occur.  
The standard on/off logic is positive logic. The  
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.  
Vin (+)  
On/ Off  
Output Over-Voltage Protection: The power  
modules have a control circuit, independent of  
the primary 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 primary regulation loop, the  
over voltage protection circuitry will cause the  
power module to shut down. The module  
remains off unless either the input power is  
recycled or the on/off switch is toggled.  
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 avoid this.  
The iHA VetaÒ family also offers a hiccup  
over-voltage protection once it detects that the  
output voltage has reached the level indicated  
in the Electrical Data section for the power  
module of interest. When the condition  
causing the over-voltage is corrected, the  
module will operate normally.  
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.  
Vout(+)  
Sense(+)  
Trim  
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  
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 <  
1.2V while sinking 1mA.  
Rdown  
Sense(-)  
Vout(-)  
Circuit to decrease output voltage  
With a resistor between the trim and Sense (-)  
terminals, the output voltage is adjusted  
down. To adjust the output voltage down a  
(877) 498-0099  
©2007 TDK Innoveta Inc.  
iHA Datasheet 040207  
13/16  
 
Advanced Data Sheet: VetaÒ iHA48060A012V*, 1.2V/60A Output Half Brick  
percentage of Vout (%Vo) from Vo,nom, the  
trim resistor should be chosen according to  
the following equation:  
be decreased to maintain the maximum rated  
power of the module.  
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.  
0.968  
kW  
- 0.1  
Rdown =  
Vnom  
- 1  
Vdown  
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  
Vout(+)  
Sense(+)  
Rup  
Trim  
Sense(-)  
Vout(-)  
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.  
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 maximum power  
rating.  
Vup(Vnom- 0.968´ Vref)  
kW  
- 0.1  
Rup=  
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.  
Vref(Vup- Vnom)  
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  
Electrical Characteristics section for the power  
module of interest.  
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 200-1000uF  
input electrolytic capacitor should be present.  
The maximum power available from the power  
module is fixed. As the output voltage is  
trimmed up, the maximum output current must  
(877) 498-0099  
©2007 TDK Innoveta Inc.  
iHA Datasheet 040207  
14/16  
 
Advanced Data Sheet: VetaÒ iHA48060A012V*, 1.2V/60A Output Half Brick  
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 470uF or two 220uF/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.  
60Vdc, the output can be considered SELV  
only if the following conditions are met:  
Safety Considerations:  
1) The input source is isolated from the  
ac mains by reinforced insulation.  
2) The input terminal pins are not  
accessible.  
3) One pole of the input and one pole of  
the output are grounded or both are  
kept floating.  
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.  
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.  
Various safety agency approvals are pending  
on the iHx 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.  
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.  
Reliability:  
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  
When the supply to the DC-DC converter is  
less than 60Vdc, the power module meets all  
of the requirements for SELV. If the input  
voltage is a hazardous voltage that exceeds  
(877) 498-0099  
©2007 TDK Innoveta Inc.  
iHA Datasheet 040207  
15/16  
 
Advanced Data Sheet: VetaÒ iHA48060A012V*, 1.2V/60A Output Half Brick  
than 2M hours using the Telcordia TR-332  
calculation method.  
are assembled at ISO certified assembly  
plants.  
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.  
Warranty:  
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.  
Quality:  
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  
TDK Innoveta Inc.  
3320 Matrix Drive, Suite 100  
Richardson, Texas 75082  
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. TDK logo is a trademark or  
registered trademark of TDK Corporation.  
Phone (877) 498-0099 Toll Free  
(469) 916-4747  
Fax  
(877) 498-0143 Toll Free  
(214) 239-3101  
(877) 498-0099  
©2007 TDK Innoveta Inc.  
iHA Datasheet 040207  
16/16  
 

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