TM
Data Sheet: Powereta iQP Series –Single Output Quarter Brick
Powereta™ iQP Series DC/DC Power Modules
48V Input, 3.3V / 70A /231W Output
Quarter Brick
The Powereta™ Series offers an industry
standard Double-P quarter brick high current
power module with true useable output
power. Its 91.5% full load efficiency (92% at
60A/198W) and superior thermal
performance make the Powereta™ series of
power modules ideally suited for tight space
and power-hungry applications in demanding
thermal environments. This rugged building
block is designed to serve as the core of
your high reliability system. A wide output
voltage trim range, -20 to +10%, and remote
sensing are standard features enhancing
versatility.
Standard Features:
•
•
•
RoHS Compliant
Standard Double-P Quarter Brick Pinout
Size: 2.28” × 1.45” × 0.5”
(57.9mm × 36.8mm × 12.7mm)
Up to 70A of output current
Output power – up to 231W
Power density: 140W / in3
•
•
Latched output over-voltage protection
Auto-recovery full protections:
o Input under and over voltage
o Output over-current
o Output short circuit
o Thermal limit
•
•
•
•
•
•
•
Efficiency – up to 93.5%
•
•
•
EMI: CISPR 22 A or B with external filter
Multiple patents
ISO Certified manufacturing facilities
Full load efficiency – 91.5%
85% of full load (60A) efficiency – 92%
Metal board design with high usable power
54.5A at 55°C, 200LFM, no heat sink
49.5A at 65°C, 200LFM, no heat sink
Wide output voltage trim range
Basic insulation – 1500Vdc
Negative remote on/off logic
Industry standard output voltage trim
Pre-bias startup capability
Optional Features:
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Positive remote on/off logic
2.79 mm (0.110”) Thru-hole pins
4.57 mm (0.180”) Thru-hole pins
Non-latching output OVP protection
Latched output over-current protection
Latched over-temperature protection
Remote sense
Constant switching frequency
UL 60950 (US and Canada), VDE 0805,
CB scheme (IEC950)
•
CE Mark (EN60950)
℡ (877) 498-0099
©2006 TDK Innoveta Inc.
iQP 3.3V/70A Datasheet 8/3/2006
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Data Sheet: Powereta iQP Series –Single Output Quarter Brick
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].
1.02 [.040] DIA Pins
1.78 [.070] DIA Stand-offs
4 Pins
1.02 [.040] DIA
2 pins
1.52 [.060] DIA
4 pins
M3 X .5 threaded
inserts, 2 places
10
9
1
2
8
7
6
3
3.40 [0.134] max Dia
2 places
4 5
Recommended hole pattern (top view)
Pin Assignment:
PIN
FUNCTION
PIN
6
FUNCTION
Sense(-)
Trim
1
2
3
4
5
Vin(+)
On/Off
Vin(-)
Vo(-)
7
8
Sense(+)
Vo(+)
9
Vo(-)
10
Vo(+)
Pin base material is copper or brass with matte tin plating; the maximum module weight is 60g (2.1 oz).
℡ (877) 498-0099
©2006 TDK Innoveta Inc.
iQP 3.3V/70A Datasheet 8/3/2006
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Data Sheet: Powereta iQP Series –Single Output Quarter 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
Vdc
Notes & Conditions
Continuous Input Voltage
Transient Input Voltage
100
Vdc
100mS max.
Isolation Voltage
Input to Output
---
---
---
1500
1500
500
Vdc
Vdc
Vdc
Basic Insulation
Basic Insulation
Operational Insulation
Input to Base-plate
Output to Base-plate
Storage Temperature
-55
125
˚C
Measured at the location specified in the thermal
measurement figure. Maximum temperature varies
with model number, output current, and module
orientation – see curve in thermal performance
section of the data sheet.
Operating Temperature Range (Tc)
-40
119
˚C
Input Characteristics:
Unless otherwise specified, specifications apply over all Rated Input Voltage, Resistive Load, and Temperature conditions.
Characteristic
Min
36
Typ
48
Max
75
Unit
Vdc
A
Notes & Conditions
Operating Input Voltage
Maximum Input Current
70A output
---
---
8
Vin = 0 to Vin,max, Io=Io,max, Vo=Vo,nom
Turn-on Voltage
Turn-off Voltage
Hysteresis
---
---
---
---
34.4
32.3
2.1
4
---
---
---
---
Vdc
Vdc
Vdc
mS
Startup Delay Time from application of input
voltage
Vo = 0 to 0.1*Vo,nom; on/off =on,
Io=Io,max, Tc=25˚C
Startup Delay Time from on/off
---
3
---
mS
Vo = 0 to 0.1*Vo,nom; Vin = Vi,nom,
Io=Io,max,Tc=25˚C
Output Voltage Rise Time
Inrush Transient
---
---
---
25
0.03
6
---
0.05
---
mS
A2s
Io=Io,max,Tc=25˚C, Vo=0.1 to 0.9*Vo,nom
Exclude external input capacitors
Input Reflected Ripple
mApp
See input/output ripple and noise
measurements figure; BW = 20 MHz
Input Ripple Rejection
* Engineering Estimate
---
65
---
dB
@120Hz
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
©2006 TDK Innoveta Inc.
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Data Sheet: Powereta iQP Series –Single Output Quarter Brick
Electrical Data:
iQP48070A033V-000 through -0x9: 3.3V, 70A, 231W Output
Characteristic
Min
Typ
Max
Unit
Notes & Conditions
Output Voltage Initial Setpoint
3.23
3.3
3.37
Vdc
Vin=Vin,nom; Io=Io,max; Tc = 25˚C
Over all rated input voltage, load, and
temperature conditions to end of life
Output Voltage Tolerance
3.20
3.3
3.40
Vdc
Efficiency
---
---
---
---
91.5
---
6.6
6.6
60
%
Vin=Vin,nom; Io=Io,max; Tc = 25˚C
Vin=Vin,min to Vin,max, Io and Tc fixed
Io=Io,min to Io,max, Vin and Tc fixed
Tc=Tc,min to Tc,max, Vin and Io fixed
Line Regulation
Load Regulation
Temperature Regulation
1
1
7
mV
mV
mV
At Io < Io,min, the module will continue to
regulate the output voltage, but the load
transient performance may degrade slightly
Output Current
7
---
70
A
Output Current Limiting Threshold
Short Circuit Current
---
---
77.5
1
---
---
A
A
Vo = 0.9*Vo,nom, Tc<Tc,max
Vo = 0.25V, Tc = 25
Vin=48V, Io ≥ Io,min, Tc=25˚C. Measured
across one 0.1uF, one 1.0 uF, and one
47uF ceramic capacitors, and one 1000uF
electrolytic capacitor located 2 inches away
– see input/output ripple measurement
figure; BW = 20MHz
mVpp
---
---
40
8
80
---
Output Ripple and Noise Voltage
mVrms
Output Voltage Adjustment Range
Output Voltage Sense Range
80
---
---
---
110
10
%Vo,nom
%Vo,nom
Vin ≥ 38V for trim-up operation
di/dt = 0.1A/uS, Vin=Vin,nom; load step
from 50% to 75% of Io,max, Tc=25˚C with at
least one 1.0 uF, one 47uF ceramic
capacitors, and one 1000uF electrolytic
capacitor across the output terminals
Dynamic Response:
Recovery Time to 10% of Peak Deviation
Transient Voltage
---
---
500
200
---
---
µS
mV
Output Voltage Overshoot during startup
Switching Frequency
0
0
---
---
mV
kHz
V
Vin=Vin,nom; Io=Io,max,Tc=25˚C
---
135
4.08
Fixed
Output Over Voltage Protection
3.8*
4.4*
Cext,min required for the 100% load dump.
Minimum ESR > 2 mΩ
External Load Capacitance
1000
---
uF
40,000 †
Isolation Capacitance
Isolation Resistance
Vref
---
1000
---
---
---
pF
MΩ
V
15
1.225
Required for trim calculation
* Engineering Estimate
† Contact TDK Innoveta for applications that require additional capacitance or very low ESR
℡ (877) 498-0099
©2006 TDK Innoveta Inc.
iQP 3.3V/70A Datasheet 8/3/2006
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Data Sheet: Powereta iQP Series –Single Output Quarter Brick
Electrical Characteristics: iQP48070A033V-000 through -0x9: 3.3V, 70A, 231W Output
95
90
85
80
75
70
25
20
15
10
5
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
5
10 15 20 25 30 35 40 45 50 55 60 65 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. Vin at 25C (test in socket, no heat sink)
Power Dissipation vs. Vin at Ta=25C (no heat sink)
Start-up from on/off Switch at 48V input and Full Load.
Ch. 1: Vo Ch. 2: ON/OFF Ch. 3: Vin Ch. 4: Io
Typical Output Ripple at 48V Input and Full Load at
Ta=25C Ch. 1: Vo
Start-up from Input Voltage Application at Full Load.
Ch. 1: Vo Ch. 2: ON/OFF Ch. 3: Vin Ch. 4: Io
Load Transient Response. Load Step from 50% to 75%
of Full Load. Ch. 1: Vo Ch. 3: Io
℡ (877) 498-0099
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Data Sheet: Powereta iQP Series –Single Output Quarter Brick
Electrical Characteristics: iQP48070A033V-000 through -0x9: 3.3V, 70A, 231W Output
3.6
3
9
8
7
6
5
4
3
2
1
0
2.4
1.8
1.2
0.6
0
30
35
40
45
50
55
60
65
70
75
0
10
20
30
40
50
60
70
80
90
Input Voltage (V)
Output Current (A)
Io_min = 7A
Io_mid = 35A
Io_max = 70.7A
Vin = 36V
Vin = 48V
Vin = 75V
Vin = 60V
Output Current Limit Characteristics vs. Input Voltage
Typical Input Current vs. Input Voltage Characteristics
3.309
3.3085
3.308
3.309
3.308
3.307
3.306
3.305
3.3075
3.307
3.3065
3.306
36
41
46
51
56
61
66
71
76
0
10
20
30
40
50
60
70
Input Voltage (V)
Output Current (A)
Io_min = 7A
Io_mid = 35A
Io_max = 70.7A
Vin = 36V
Vin = 48V
Vin = 75V
Vin = 60V
Typical Output Voltage vs. Load Current at Ta=25C.
Typical Output Voltage vs. Input Voltage at Ta=25C.
Trim
Down
Resistor
(Ohm)
3.6
3
%
Change
of Vout
%
Change
of Vout
Trim Up
Resistor
(Ohm)
2.4
1.8
1.2
0.6
0
-10
-20
40.9K
15.3K
+5
176.7K
90.1K
+10
e.g. trim up 5%
5.11× 3.3⋅(100 + 5)
511
5
Rup :=
−
− 10.22 ⋅K
30
31
32
33
34
35
36
37
38
1.225× 5
Input Voltage (V)
Io_min = 7A
Io_mid = 35A
Io_max = 70.7A
Typical Output Voltage vs. Input Turn-on and Turn-off
Voltage at Ta=25C
Calculated Resistor Values for Output Voltage Adjustment
℡ (877) 498-0099
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Data Sheet: Powereta iQP Series –Single Output Quarter Brick
Thermal Performance:
iQP48070A033V-000 through -0x9: 3.3V, 70A, 231W Output
75
75
65
55
45
35
25
65
55
45
35
25
30
40
50
60
70
80
90
100
110
120
30
40
50
60
70
80
90
100
110
120
Ambient Temperature (C)
Ambient Temperature (C)
NC 0.3 m/s (60 LFM)
2.0 m/s (400 LFM)
0.5 m/s (100 LFM)
3.0 m/s (600 LFM)
1.0 m/s (200 LFM)
Max IMS Temp
1.5 m/s (300 LFM)
NC 0.3 m/s (60 LFM)
2.0 m/s (400 LFM)
0.5 m/s (100 LFM)
3.0 m/s (600 LFM)
1.0 m/s (200 LFM)
Max IMS Temp
1.5 m/s (300 LFM)
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 3 to pin 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 3 (best orientation).
best
orientation
airflow
I
O
u
t
p
u
t
n
p
u
t
Thermal
measurement
location
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.
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Data Sheet: Powereta iQP Series –Single Output Quarter Brick
The cross section of the airflow passage is
Thermal Management:
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.
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
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
application environments are key elements
of a robust, reliable power module.
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.
Adjacent PCB
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
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
Air Velocity and Ambient
Temperature
Measurement Location
Air Passage
Centerline
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.
Wind Tunnel Test Setup Figure
Dimensions are in millimeters and (inches).
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
component indicated in the thermal
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.
measurement location figure on the thermal
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Data Sheet: Powereta iQP Series –Single Output Quarter Brick
performance page 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
(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 0.35-0.55 Nm (3-
5 in-lbs).
temperatures below the maximum rated
operating temperature.
Heat transfer by convection can be
The system designer must use an accurate
estimate or actual measure 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. For
TDK Innoveta standard heatsinks, contact
TDK Innoveta Inc. for latest performance
data.
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.
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 iQP platform is designed with a
base plate with two 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;
ensure consistent operation and extended
reliability of the system. With improved
thermal performance, more power can be
delivered at a given environmental condition.
Standard heatsink kits are available from
TDK Innoveta Inc. for vertical module
mounting in two different orientations
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Data Sheet: Powereta iQP Series –Single Output Quarter Brick
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
roughly 2ms delay from the time an overload
condition appears at the module output until
the hiccup mode will occur. A latched over-
current protection option is also available.
Consult the TDK Innoveta technical support
for details.
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.
The standard on/off logic is negative logic.
The module will turn on if pin 2 is connected
to pin 3, and it will be off if pin 2 is left open.
If the negative logic feature is not being
used, pin 2 should be shorted to pin 3.
Output Over-Voltage Protection: 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 main
regulation loop, the over voltage protection
circuitry will latch the power module off once
it detects the output voltage condition as
specified on the Electrical Data page. To
remove the module from the latched
An optional positive logic is available. The
power module will turn on if pin 2 is left open
and will be off if pin 2 is connected to pin 3.
If the positive logic circuit is not being used,
terminal 2 should be left open.
condition, either cycle the input power or
toggle the remote ON/OFF pin providing that
over-voltage conditions have been removed.
The reset time of the ON/OFF pin should be
500ms or longer.
The iQP Powereta family also offers an
optional feature to allow non-latching 1-
second hiccup mode over-voltage
protection. Consult the TDK Innoveta
technical support for details.
Thermal Protection: When the power
modules exceed the maximum operating
temperature, the modules will turn-off to
safeguard the units 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.
℡ (877) 498-0099
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Data Sheet: Powereta iQP Series –Single Output Quarter Brick
Vout(+)
Vin (+)
On/ Off
Sense(+)
Trim
Rdown
Sense(-)
Vout(-)
Vin(-)
Circuit to decrease output voltage
On/Off Circuit for positive or negative logic
Output Voltage Adjustment: The output
voltage of the module may be adjusted by
using an external resistor connected
between the trim pin 6 and either the Sense
(+) or Sense (-) pin. If the voltage trim
feature is not used, pin 6 should be left
open. Care should be taken to avoid
injecting noise into the module’s trim pin. A
small 0.01uF capacitor between the power
module’s trim pin and Sense (-) pin may
help to avoid this.
10000
1000
100
With a resistor between the trim pin and
Sense (-) pin, the output voltage is adjusted
down. To adjust the output voltage down a
percentage of Vout (∆%) from Vo,nom, the
trim resistor should be chosen according to
the following equation:
10
0
2
4
6
8
10 12 14 16 18 20
% Decrease in Output Voltage, (%)
∆
With a resistor between the trim pin and
sense (+) pin, the output voltage is adjusted
up. To adjust the output voltage up a
percentage of Vout (∆%) from Vo,nom the
trim resistor (in kΩ) should be chosen
according to the following equation:
100
Rdown = 5.11× (
− 2)
(kΩ)
∆%
Where
∆%=100×(Vo,nom - Vdesired) / Vo_nom
V0,nom × (100 + ∆%)
100
Rup = 5.11× (
−
− 2)
Vref × ∆%
∆%
The current limit set point does not increase
as the module is trimmed down, so the
available output power is reduced.
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Data Sheet: Powereta iQP Series –Single Output Quarter Brick
Remote Sense: The power modules feature
Vout(+)
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(+)
Rup
Trim
Sense(-)
Vout(-)
Sense(+) pin should be connected to the
Vo(+) pin and the Sense (-) pin should be
connected to the Vo(-) pin.
The output voltage at the Vo(+) and Vo(-)
terminals can be increased by either the
remote sense or the output voltage
Circuit to increase output voltage
adjustment feature. The maximum voltage
increase allowed is the larger of the remote
sense range or the output voltage
10000
1000
100
adjustment range; it is not the sum of both.
As the output voltage increases due to the
use of the remote sense, the maximum load
current must be decreased for the module to
remain below its maximum power rating.
EMC Considerations: TDK Innoveta power
modules are designed for use in a wide
variety of systems and applications. With
the help of external EMI filters and careful
layout, it is possible to meet CISPR 22 class
A or B requirement. For assistance with
designing for EMC compliance, please
contact TDK Innoveta technical support.
10
0
2
4
6
8
10
% Increase in Output Voltage, ∆ (%)
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, one
or more 220uF to 470uF/100V input
The value of Vref can be found in the
Electrical Data section of this data sheet.
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. It is
also desirable to slightly increase the input
voltage while trimming up the output with
heavy load current.
electrolytic capacitors should be present if
the source inductance is greater than 4uH.
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
As the output voltage is trimmed up, the
output over-voltage protection set point is
not adjusted. Trimming the output voltage
too high may cause the output over voltage
protection circuit to be triggered.
automated final test. The MTBF is
calculated to be greater than 2.5M hours at
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Data Sheet: Powereta iQP Series –Single Output Quarter Brick
nominal input, full load, and Ta = 40˚C using
the Telcordia TR-332 issue 6 calculation
method.
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 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.
Input/Output Ripple and Noise Measurements:
Lin
+
+
Vs
C1
Cext
C0
RLoad
Vout
-
Vin
-
GroundPlane
The input reflected ripple is measured with a current probe and oscilloscope. The ripple current is the current through a
12µH differential mode inductor, Lin, with esr ≤ 10 mΩ, feeding a capacitor, C1, esr ≤ 700 mΩ @ 100kHz, across the
module input voltage pins. The capacitor C1 across the input shall be at least one 220µF/100V electrolytic capacitor along
with two 1uF to 2.2uF/100V ceramic capacitors. Two 220µF/100V electrolytic capacitors and two 2.2uF/100V ceramic
capacitors are recommended. A 100µF/100V capacitor for C0 is also recommended.
The output ripple measurement is made approximately 7 cm (2.75 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.
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Data Sheet: Powereta iQP Series –Single Output Quarter Brick
Safety Considerations:
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.
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.
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.
As part of the production process, the power
modules are hi-pot tested from primary and
secondary at a test voltage of 1500Vdc.
Warranty:
To preserve maximum flexibility, the power
modules are not internally fused. An
external input line normal blow fuse with a
maximum value of 15A 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.
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.
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 60Vdc, the output can be
considered SELV only if the following
conditions are met:
TDK Innoveta, Inc.
3320 Matrix Drive, Suite 100
Richardson, 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
Fax
(877) 498-0143 Toll Free
(214) 239-3101
℡ (877) 498-0099
©2006 TDK Innoveta Inc.
iQP 3.3V/70A Datasheet 8/3/2006
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