TDK Dualeta iQA Series Data Sheet

Data Sheet: Dualeta™ iQA Series – Dual Quarter Brick

Dualeta™ iQA Series DC/DC Power Modules

48V Input, 15A Output

Dual Output Quarter Brick

The Dualeta™ Family is a 75W family of highly versatile,

independently regulated, dual output quarter brick power modules with output voltage tracking. Its output current loading scheme is fully flexible: 0 to 15A can be drawn from either output with no minimum load requirements. An ultra wide range independent output

trim allows the realization of dual output voltage combinations between 1.5 and 5.5V. The superior versatility of the Dualeta™ family substantially reduces the quantity of distinct part numbers in the end user part portfolio, lowering cost of ownership.

Features

• Standard Dual Quarter Brick format

• A single module which can support all your dual voltage requirements between 1.5V and 5.5V

• Two output trim options: o

Standard Dual Trim – wide range independent adjustment of either output, using two trim pins o

Optional Single Tracking Trim – adjust both outputs together by 10% according to industry standard resistor tables

• Independently regulated, tight tolerance outputs

• Flexible loading: 0-15A from either output, 15A total load

• High efficiency – up to 89%

• Industry-leading output power: 75W

• Basic insulation – 1500 Vdc

• Full, auto-recovery protection: o

Input under and over voltage o

Output o over

Current o

Short o

Thermal

• Monotonic, tracking start-up

• Starts with pre-biased outputs

• High reliability open frame, surface mount construction

• Baseplate for improved thermal management

• UL 60950 (US and Canada), VDE 0805,

CB scheme (IEC950)

Options

• Optional Single Tracking Trim – using industry standard resistor tables

• Remote on/off (negative logic)

• Short Thru-hole pins 2.79 mm (0.110”)

©2001-2006 Innoveta™ Technologies, Inc. iQAFullDatasheet080505 2.doc 8/3/2006

℡ (877) 498-0099 1/19

Advance Data Sheet: Dualeta™ iQA Series – Dual Quarter Brick

Ordering information

Product

Identifier

Package

Size

Platform Input

Voltage

Output

Current/

Power

Output

Units

Main

Output

Voltage

# of

Outputs

Safety

Class

TDK Innoveta

Quarter

Brick

Product Offering

Code iQA48015A050M-000 iQA48015A033M-000

Feature Set

Dualeta™ 36-75V 15 Amps

050 – 5.0V

033 – 3.3V

Multiple

00 – Standard

Input Voltage

36V to 75V

36V to 75V

Feature Set On/Off Logic

00 Positive

01 Negative

04

05

Output Voltage

5.0/3.3V

3.3/2.5V

Positive

Negative

Output Current

15A

15A

Pin Length

0.145”

0.145”

Trim

Dual independent pins


0.110”

0.110”



Maximum

Output Power

75W

50W

Efficiency

87%

85%

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 [email protected]

http://www.tdkinnoveta.com/

©2001-2005 TDK Innoveta Inc. iQAFullDatasheet080505 2.doc 8/3/2006

℡ (877) 498-0099 2/19


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].

Recommended Hole Pattern:

(top view)

Pin Assignment:

PIN FUNCTION PIN FUNCTION

1 Vin (+) 5 Output RTN

2 On/Off (-) 6 Vo1 Trim (Optional:

Single tracking trim pin)

3

4

Vin (-)

Vo2 (+)

7

A

Vo1 (+)

Vo2 Trim (Optional: Omit for single trim pin option)


℡ (877) 498-0099 3/19


Absolute Maximum Ratings:

Stress in excess of Absolute Maximum Ratings may cause permanent damage to the device.

Characteristic

Continuous Input Voltage

Transient Input Voltage

Isolation Voltage

Input to Output

Input to Baseplate

Output to Baseplate

Min

-0.5

---

---

---

---

Max

80

100

1500

1500

500

Unit

Vdc

Vdc

Vdc

Vdc

Vdc

Notes & Conditions

100mS max.

Basic insulation

Basic insulation

Operational insulation

Storage Temperature -55 125 ˚C

Operating Temperature Range (Tc) -40 105*

* 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

Maximum Input Current

Turn-on Voltage

Turn-off Voltage

36

---

---

30*

48

---

34

32

75

3.0*

---

---

Vdc

A

Vdc

Vdc

Vin = 0 to Vin,max

Startup Delay Time from application of input voltage

Startup Delay Time from on/off

Output Voltage Rise Time

---

---

---

12

10

50

---

---

--- mS mS mS

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

A 2 s Inrush Transient --- --- 0.1

Input Reflected Ripple --- 15 --- mApp

See input/output ripple measurement figure; BW = 5 MHz

Input Ripple Rejection --- 50* --- dB @120Hz

*Engineering Estimate

Caution: The power modules are not internally fused. An external input line normal blow fuse with a maximum value of

10A is required; see the Safety Considerations section of the data sheet.


℡ (877) 498-0099 4/19


Electrical Data:

iQA48015A033M: 3.3V/2.5V, 15A Output

Characteristic Min

Output Voltage Initial Setpoint

Vout1

Vout2

Output Voltage Tolerance

Vout1

Vout2

Efficiency

Line Regulation

Load Regulation

Temperature Regulation

Output Current

Output Current Limiting Threshold

Short Circuit Current

Output Ripple and Noise Voltage

Vout1

Vout2

Vout1

Vout2

---

---

---

0

3.25

2.46

3.20

2.42

83*

---

---

---

---

---

---

Typ

3.3

2.5

3.3

2.5

85

2

5

10

---

19

3

30

25

Max

3.35

2.54

3.40

2.58

---

5*

15*

75*

15

---

---

80

70

---

---

Unit

Vdc

Vdc

Vdc

Vdc

% mV mV mV

A

A

A mVpp mvpp mVrms mVrms

Notes & Conditions

Vin=Vin,nom; Io=Io,max; Tc = 25˚C

Over all rated input voltage, load, and temperature conditions to end of life

Vin=Vin,nom; Io1=7.5A, Io2=7.5A;

Tc = 25˚C

Vin=Vin,min to Vin,max

Io=Io,min to Io,max

Tc=Tc,min to Tc,max

Sum of output currents, Io1+Io2

Vo1 = 0.9*Vo,nom, Tc<Tc,max

Vo = 0.25V, Tc = 25˚C; average output current in current limit hiccup mode

Measured with 47uF Tantalum and 1uF ceramic external capacitance – see input/output ripple measurement figure; BW =

20MHz

Output Voltage Adjustment Range

Tracking trim option

Dynamic Response:

Recovery Time

Transient Voltage

Output Voltage Overshoot during startup

Vout1

Vout2

Switching Frequency

Output Over Voltage Protection


Vo1

Vo2

---

---

---

3.7

2.9

90

---

---

250

150

280

---

---

10

10

---

0.1

80

---

---

---

5.0*

4.0*

110

---

---

%Vout,nom mS mV mV mV kHz

V

V

%Vout,nom di/dt = 0.1A/uS, Vin=Vin,nom; load step from

50% to 75% of Io,max, either output

Io=Io,max,Tc=25˚C

Fixed

External Load Capacitance

Isolation Capacitance

0

---

---

1000

5000*&

--- uF pF

Isolation Resistance 10 --- --- MΩ


& Contact Innoveta for applications that require additional capacitance or very low ESR capacitor banks.


℡ (877) 498-0099 5/19


Electrical Characteristics:

iQA48015A033M: 3.3V/2.5V, 15A Output

ηηηη

82

80

78

76

74

72

70

88

86

84

0 20 40 60 80

Output Current (% full load) Io1=Io2

100

12

10

8

6

4

2

0

0 20 40 60 80

Output Current (% full load) Io1=Io2

Vin = 36V Vin = 48V Vin = 75V

Typical Efficiency vs. Input Voltage at Ta=25 °C.


Typical Power Dissipation vs. Input Voltage at Ta=25 °C.

100

3.305

2.505

3.3

2.5

3.295

3.29

3.285

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Output Current Io1 (A), Io2 = 0A

Typical Output 1 Voltage vs. Load Current at Ta = 25 °C.

2.495

2.49

2.485

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15



Typical startup characteristic from On/Off application at full load.

CH3-On/Off, CH1-Vo1, CH2-Vo2

Typical startup characteristic from input voltage application at full load. CH3-Vin, CH1-Vo1, CH2-Vo2


℡ (877) 498-0099 6/19


Electrical Characteristics (continued):

iQA48015A033M: 3.3V/2.5V, 15A Output

Typical Vo1 load transient response. Io1 step from 3.75A to 7.5A with 0.1A/uS, Io2=7.5A. CH1 – Vo1, CH2 – Vo2,

CH4 – Io1.

3.4


CH4 – Io2.

2.6

2.55

3.35

3.3

3.25

3.2

10 11 12 13 14 15 16 17 18 19 20



2.5

2.45

2.4

10 11 12 13 14 15 16 17 18 19 20



Typical Output 1 Current Limit Characteristics vs. Input

Voltage at Ta=25 degrees.

Typical Output Ripple at nominal Input voltage and full balanced load currents at Ta=25 degrees.



1.8

1.6

1.4

1.2

1

0.8

0.6

0.4

0.2

0

25 30 35 40 45 50 55 60 65 70 75

Input Voltage (V)

Io1 = Io2 = 0A Io1 = Io2 = 3.75A

Io1 = Io2 = 7.5A

Typical Input Current vs. Input Voltage Characteristics.


℡ (877) 498-0099 7/19



iQA48015A033M: 3.3V/2.5V, 15A Output

3.5

3

2.5

2

1.5

1

0.5

0

25 30 35 40 45 50 55 60 65 70 75


3

2.5

2

1.5

1

0.5

0

25 30 35 40 45 50 55 60 65 70 75


Io1 = Io2 = 0A Io1 = Io2 = 3.75A

Io1 = Io2 = 7.5A

Io1 = Io2 = 0A Io1 = Io2 = 3.75A

Io1 = Io2 = 7.5A

Typical Vo1 Output Voltage vs. Input Voltage

Characteristics


Characteristics

Trim up – tracking trim option

Trim from nominal (%)

+1 +2 +3 +4 +5 +6 +7 +8 +9 +10

Rup (k Ω) 46 20.4 12.1 7.9 5.2 3.5 2.2 1.3 .61 0

Rup is connected between Trim and RTN.

Trim down – tracking trim option


-1 -2 -3 -4 -5 -6 -7 -8 -9 -10

Rdown (k Ω)

Rdown is connected between Trim and Vout2.

Trim resistor values for output voltage adjustment – tracking trim option.


℡ (877) 498-0099 8/19


Electrical Data:

iQA48015A050M: 5V/3.3V, 15A Output

Characteristic Min Notes & Conditions

Vin=Vin,nom; Io=Io,max; Tc = 25˚C Output Voltage Initial Setpoint

Vout1

Vout2

Output Voltage Tolerance

Vout1

Vout2

Efficiency

Line Regulation

Load Regulation

Temperature Regulation

Output Current

---

---

---

0

4.92

3.25

4.85

3.2

86*

2

5

10

---

Typ

5

3.3

5

3.3

87.5

Max

5.08

3.35

5.15

3.4

---

5*

15*

75*

15

Unit

Vdc

Vdc

Vdc

Vdc

% mV mV mV

A

Over all rated input voltage, load, and temperature conditions to end of life

Vin=Vin,nom; Io1=7.5A, Io2=7.5A;

Tc = 25˚C

Vin=Vin,min to Vin,max

Io=Io,min to Io,max

Tc=Tc,min to Tc,max

Sum of output currents, Io1+Io2

Output Current Limiting Threshold

Short Circuit Current

Output Ripple and Noise Voltage

Vout1

Vout2

Vout1

Vout2

---

---

---

---

17

3

40

35

---

---

80

70

A

A mVpp mvpp

Vo1 = 0.9*Vo,nom, Tc<Tc,max

Vo = 0.25V, Tc = 25˚C; average output current in current limit hiccup mode

Measured with 47uF Tantalum and 1uF ceramic external capacitance – see input/output ripple measurement figure; BW =

20MHz

Output Voltage Adjustment Range

Dual independent trim – standard


Dynamic Response:

Recovery Time

Transient Voltage

Output Voltage Overshoot during startup

Vout1

Vout2

Switching Frequency

Output Over Voltage Protection

Dual independent trim – standard

Vo1

Vo2


Vo1

Vo2

---

---

1.5

90

---

---

---

---

---

5.6

---

5.6

3.7

10

10

---

---

0.1

100

250

150

280

---

Vo1

---

---

---

---

5.5

110

---

---

---

---

---

6.7*

---

7.5*

5.2* mVrms mVrms

Vdc

%Vout,nom mS mV mV mV kHz

V

V

V

V

Vout2 < (Vo1-0.3V)

Either output

%Vout,nom di/dt = 0.1A/uS, Vin=Vin,nom; load step from

50% to 75% of Io,max, either output

Io=Io,max,Tc=25˚C

Fixed

External Load Capacitance 0 --- 5000*& uF

Isolation Capacitance --- 1000 --- pF

Isolation Resistance 10 --- --- MΩ


& Contact TDK Innoveta for applications that require additional capacitance or very low ESR capacitor banks.


℡ (877) 498-0099 9/19


Electrical Characteristics:


ηηηη

76

74

72

70

82

80

78

90

88

86

84

0 10 20 30 40 50 60 70 80 90 100

Output Current (% Full Load) Io1=Io2

12

11

10

9

8

7

6

5

4

3

0 10 20 30 40 50 60 70 80 90 100

Output Current (% Full Load) Io1=Io2


Typical Efficiency vs. Input Voltage at Ta=25 °C.


Typical Power Dissipation vs. Input Voltage at Ta=25 °C.

5.02

3.32

5.015

5.01

5.005

5

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15



3.315

3.31

3.305

3.3

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15



Typical startup characteristic from On/Off application at full load.

CH3-On/Off, CH1-Vo1, CH2-Vo2

Typical startup characteristic from input voltage application at full load. CH3-Vin, CH1-Vo1, CH2-Vo2


℡ (877) 498-0099 10/19





CH4 – Io1.

5.1


CH4 – Io2.

3.4

5.05

3.35

5 3.3

3.25

4.95

4.9

10 11 12 13 14 15 16


17


18

3.2

10 11 12 13 14 15 16


17


18



Typical Output Ripple at nominal Input voltage and full balanced load currents at Ta=25 degrees.



2.5

2

1.5

1

0.5

0

25 30 35 40 45 50 55 60 65 70 75


Io1 = Io2 = 0A Io1 = Io2 = 3.75A

Io1 = Io2 = 7.5A

Typical Input Current vs. Input Voltage Characteristics.


℡ (877) 498-0099 11/19




6

5

4

3

2

1

0

25 30 35 40 45 50 55 60 65 70 75

Input Voltage (V)

Io1 = Io2 = 0A Io1 = Io2 = 3.75A

Io1 = Io2 = 7.5A

3.5

3

2.5

2

1.5

1

0.5

0

25 30 35 40 45 50 55 60 65 70 75


Io1 = Io2 = 0A Io1 = Io2 = 3.75A

Io1 = Io2 = 7.5A


Characteristics

Trim up – independent trim

Vout1 (V) 5.15 5.25 5.35 5.5

Trim from nominal (%Vo)

Rup1 (k Ω)

3% 5% 7% 10%

318 194 141 101

Rup1 is connected between Trim1 and Vout1.

Vout2 (V) 3.63 4.0 4.5 5


Rup2 (k Ω)

10% 21% 36% 52%

55 28 18 14

Rup2 is connected between Trim2 and Vout2.

Rup =

⋅ ( + %Vo )

⋅ )

−

301 + ⋅ )

%Vo

⋅ 1000

Trim up resistor values for output voltage adjustment – standard wide trim version.


Characteristics

Trim down – independent trim

Vout1 (V) 4.5 3.3 2.5 1.8


Rdown1 (k Ω)

10% 34% 50% 64%

26 4.8 2.0 0.69

Rdown1 is connected between Trim1 and RTN.

Vout2 (V) 2.97 2.5 1.8 1.5


Rdown2 (k Ω)

10% 24% 45% 55%

26 8.5 2.7 1.5

Rdown2 is connected between Trim2 and RTN.

Rdown =

301 − ⋅

%Vo

)

⋅ 1000

Trim down resistor values for output voltage adjustment – standard wide trim version.

Trim up – tracking trim option


+1 +2 +3 +4 +5 +6 +7 +8 +9 +10

Rup (k Ω) 50 23 14 9.2 6.4 4.5 3.1 2.1 1.3 0

Rup is connected between Trim and RTN.

Trim down – tracking trim option


-1 -2 -3 -4 -5 -6 -7 -8 -9 -10

Rdown (k Ω) 67 30 17 11 7.8 5.4 3.7 2.4 1.4 0

Rdown is connected between Trim and Vout2.

Trim resistor values for output voltage adjustment – tracking trim option.


℡ (877) 498-0099 12/19


Thermal Performance:


16

14

12

10

4

2

0

8

6

20 30

NC (60lfm)

300 LFM

40 50 60 70 80

Am bient Tem perature (C)

100 LFM

400 LFM

90

200 LFM

600 LFM

100

16

14

12

10

8

6

4

2

0

20 30 40 50 60 70 80 90 100

Ambient Temperature (C)

NC (60lfm) 100 LFM 200 LFM

300 LFM 400 LFM 600 LFM

Maximum Io1 output current (Io2=0) vs. ambient temperature at nominal input voltage for airflow rates natural convection (60lfm) to 400lfm with air flow from pin 3 to pin 1.

Maximum balanced load (Io1=Io2) output current vs. ambient temperature at nominal input voltage for airflow rates natural convection (60lfm) to 600lfm with airflow from pin 3 to pin 1.

16

14

12

10

8

6

4

2

0

20 100 30 40 50 60 70 80 90

Am bient Tem perature (C)

NC (60lfm)

300 LFM

100 LFM

400 LFM

200 LFM

600 LFM

Maximum Io2 output current (Io1=0) vs. ambient temperature at nominal input voltage for airflow rates natural convection (60lfm) to 400lfm with air flow from pin 3 to pin 1.

The thermal curves provided and the example given above are based upon measurements made in Innoveta’s experimental test setup that is described in the Thermal Management section. Due to the large number of variables in system design, Innoveta recommends that the user verify the module’s thermal performance in the end application.


℡ (877) 498-0099 13/19


Thermal Management:

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 ability to operate in severe 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.

The open frame design of the power module provides an air path to individual components. This air path improves heat conduction and convection to the surrounding environment, which reduces areas of heat concentration and resulting hot spots.

Test Setup

The thermal performance data of the power module is based upon measurements obtained from a wind tunnel test with the setup shown below. This thermal test setup replicates the typical thermal environments encountered in most modern electronic systems with distributed power architectures. The electronic equipment in optical networking, telecom, wireless and advanced computer systems operate in similar environments and utilize vertically mounted PCBs or circuit cards in cabinet racks.

The power module, as shown in the figure, is mounted on a printed circuit board (PCB) and is vertically oriented within the wind tunnel. The cross section of the airflow passage is rectangular. The spacing between the top of the module or heatsink

(where applicable) and a parallel facing PCB is kept at a constant (0.5 in). The power module orientation with respect to the airflow direction can have a significant impact on the module’s thermal performance.

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

Adjacent PCB

AIRFLOW

Module

Centerline

76 (3.0)

Air Velocity and Ambient

Temperature Measurement

Location

L

O

W

A

I

R

F

Air Passage

Centerline

Wind Tunnel Test Setup

Dimensions are in millimeters and (inches).

Thermal Performance section. The module temperature should be measured in the final system configuration to ensure proper thermal management of the power module.

In all conditions, the power module should be operated below the maximum operating temperature shown on the de-rating 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

(T

AMB

) and airflow rate as shown in the

12.7

(0.50)


℡ (877) 498-0099 14/19

Advance Data Sheet: Dualeta™ iQA Series – Dual Quarter Brick thermal performance figures in the Thermal

Performance section. 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 iQA platform is designed with a base plate with four M3 X 0.5 throughthreaded mounting fillings for attaching a heatsink or cold plate. The addition of a heatsink can reduce the airflow requirement, ensure consistent operation and extend reliability of the system. With improved thermal performance, more power can be delivered at a given environmental condition.

Standard heatsink kits are available from

Innoveta Technologies 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) as shown in the heatsink Offering section. 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 torquelimiting driver set between 0.35-0.55 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 Innoveta

Engineering for recommendations on this subject.

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

Innoveta standard heatsinks, contact

Innoveta Technologies for latest performance data.

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

100mS from the time an overload condition appears at the module output until the hiccup mode will occur.

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 enter a hiccup over-voltage mode 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 module exceeds the maximum operating temperature, the module 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.


℡ (877) 498-0099 15/19


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 positive logic.

The power module will turn on if the On/Off is left open and will be off if the On/Off is connected to Vin (-). If the positive logic circuit is not being used, the On/Off should be left open.

An optional negative logic is available. The power module will turn on if the On/Off terminal is connected to Vin (-), and it will be off if the On/Off is left open. If the negative logic feature is not being used, On/Off should be shorted to Vin (-).

Vin (+)

On/ Off

Vin(-)

On/Off Circuit for positive or negative logic

Output Voltage Adjustment

The output voltages of the power module may be adjusted by using an external resistor connected between the Trim terminal and either the Vo (+) or RTN terminal. If the output voltage adjustment feature is not used, the Trim pin(s) 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 RTN pin may help avoid this.

Two trim configurations are offered on the iQA-series. The standard Dual Independent

Trim offers wide range independent adjustment of either output, using two trim pins. The optional Single Tracking Trim adjusts both outputs together by 10% according to industry standard resistor tables. Only a single trim pin is provided.

Dual independent Trim

Vo1(+)

Vo2(+)

Trim2

Trim1

RTN

Trim2

Trim1

RTN

Rdown1

Circuit to increase output voltage

Rdown2

Circuit to decrease output voltage

With a resistor between the trim and RTN terminals, the output voltage is adjusted down. 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:

Rdown =

301 − ⋅

%Vo

)

⋅ 1000

The current limit set point does not increase as the module is trimmed down, so the available output power is reduced.

Vo1(+)

Vo2(+)

Rup1

Rup2


℡ (877) 498-0099 16/19


With a resistor between the trim and Vo (+) 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:

⋅ ( + %Vo ) 301 + ⋅

Rup = −

) %Vo

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.

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.

Optional Tracking Trim

)

⋅ 1000

Vo1(+)

Vo2(+)

Rdown

(Vo2,nom>=2V)

Rdown

(Vo2,nom<2V)

Trim

RTN

Circuit to decrease output voltage

With a resistor between the trim and Vo2(+) terminals, the output voltage is adjusted down. For models where the nominal set point of Vo2 is < 2V, the resistor is instead tied from trim to Vo1(+). Refer to the resistor selection tables in the Electrical

Characteristics section for trim adjustment.

The current limit set point does not increase as the module is trimmed down, so the available output power is reduced.

Vo1(+)

Vo2(+)

Trim

RTN

Rup

Circuit to increase output voltage

With a resistor between the Trim and RTN terminals, the output voltage is adjusted up.

Refer to the resistor selection tables in the

Electrical Characteristics section for trim adjustment.

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.

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.

EMC Considerations: Innoveta power modules are designed for use in a wide variety of systems and applications. For assistance with designing for EMC compliance, please contact Innoveta technical support.

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 10-100uF input electrolytic capacitor should be present if the source inductance is greater than 4uH.


℡ (877) 498-0099 17/19


Input/Output Ripple and Noise Measurements

Battery

1

12uH

2

220uF esr<0.1

100KHz

+

33uF esr<0.7

100KHz

Vinput

-

+

Voutput

-

Cext

RLoad

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 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.

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.

Improper handling or cleaning processes can adversely affect the appearance, testability, and reliability of the power modules. Contact Innoveta technical support for guidance regarding proper handling, cleaning, and soldering of TDK Innoveta’s power modules.

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.

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.


℡ (877) 498-0099 18/19


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.

As part of the production process, the power modules are hi-pot tested from primary and secondary at a test voltage of 1500Vdc.

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.

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:

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.

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 [email protected]

http://www.tdkinnoveta.com/

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. is a trademark or registered trademark of TDK Corporation.

©2004 TDK Innoveta® Inc. iQAFullDatasheet080505_2.doc 8/3/2006 Revision 2.0

℡ (877) 498-0099

19/19

TDK Dualeta iQA Series Data Sheet

Dualeta™ iQA Series DC/DC Power Modules

Features

Options

Ordering information

Product Offering

Mechanical Specification

Recommended Hole Pattern:

Pin Assignment:

Absolute Maximum Ratings:

Input Characteristics:

Electrical Data:

Electrical Characteristics:

Electrical Characteristics (continued):

Electrical Characteristics (continued):

Electrical Data:

Electrical Characteristics:

Electrical Characteristics (continued):

Electrical Characteristics (continued):

Thermal Performance:

Thermal Management:

Operating Information

Input/Output Ripple and Noise Measurements

Reliability

Quality

Warranty

Safety Considerations

Related manuals

TDK

Network Card iEB Series

TDK

Veta iHA48040A033V*

TDK

Powereta iQP Series

TDK

Xeta Half Brick-iHG

TDK

Metamere iAA Series

TDK

Powereta iQP48080A025V