Datasheet UHP-3.3-30-D48S, UHP-3.3-30-D48N Datasheet (DATEL)

3.3 Volts @ 30 Amps

100 Watt, DC/DC Converters

Single Output

UHP Models

Features

Figure 1. Simplifi ed Schematic

INNOVATION and EX C ELL E N C

E

®

®

■

■

■

■

■

■

■

■

■

■

■

■

■

DATEL, Inc., Mansfi eld, MA 02048 (USA) · Tel: [phone] Fax: [phone] · Email: [e-mail] · Internet: www.datel.com

DATEL's fully isolated UHP series of DC/DC converters affords users a practical

solution for their low-voltage/high-current applications . With an input voltage range of
36 to 75 Volts, the UHP-3.3/30-D48 delivers 30 Amps of output current from a fully
regulated 3.3V output. Using both surface-mount technology and planar magnetics,
these converters are manufactured on a 2.3" x 2.4" open-frame package with an
industry-standard pinout confi guration.

UHP converters utilize a full-bridge, fi xed-frequency topology along with syn-
chronous output rectifi cation to achieve a high effi ciency of 89%. This effi ciency,
coupled with the open-frame package that allows unrestricted air fl ow , reduces
internal component temperatures thereby allowing operation at elevated ambient
temperatures.

These DC/DC's provide output trim, sense pins and primary side on/off control
(available with positive or negative logic) or sync. Standard features also include
input overvoltage and undervoltage shutdown circuitry, output overvoltage protec­tion, output short-circuit and current limiting protection and thermal shutdown. All
devices meet IEC950, UL1950 and EN60950 safety standards and carry the CE
mark (meet LVD) requirements). CB reports are available on request.

Regulated 3.3V output @ 30 Amps

Input range: 36V-75V

Open frame: 2.3" x 2.4" x 0.47"

Industry-standard package/pinout

Light weight: 2.24 ounces (63.5g)

Remose sense, Trim, On/Off Control

High effi ciency: 89%

Fully isolated, 1500Vdc guaranteed

Input under and overvoltage shutdown

Output overvoltage protection

Short circuit protection; thermal shutdown

UL1950 and EN60950 safety approvals

CE mark

+INPUT

–INPUT

+SENSE

–SENSE

+3.3V OUTPUT

OUTPUT
RETURN

UV & OV

COMPARATORS

THERMAL

SHUTDOWN

PRIMARY

SWITCH

CONTROL

SECONDARY

SWITCH

CONTROL

PWM

CONTROLLER

REFERENCE &

ERROR AMP

OPTO

ISOLATION

PRELIMINARY

3.3V @ 30A, SINGLE OUTPUT DC/DC CONVERTERS

XHP Series

Performance Specifi cations and Ordering Guide

➀

PART NUMBER STRUCTURE

Nominal Output Voltage:

3.3 Volts

3.3

UHP

30-

/

D48

Input Voltage Range:
D48 = 36-75 Volts (48V nominal)

Maximum Output Current:

30 Amps

Unipolar
High-Power Series

-

Part Number Suffi xes

UHP 30 Amp DC/DC's are designed so a negative logic

on/off control ("N" suffi x) or a Sync function ("S" suffi x) can be

added in the pin 3 position.

No Suffi x On/Off Control function (positive polarity)

N Negative polarity on/off control

S Sync function

➀ Typical at TA = +25°C under nominal line voltage and full-load conditions.
➁ Ripple/Noise (R/N) measured over a 20MHz bandwidth with 10µFtantalum and 1µF ceramic output capacitors.
➂ Tested from no load to 100% load.
➃ Nominal line voltage, no load/full load condition.

Output

Input

R/N (mVp-p) ➁ Regulation (Max.) Effi ciency

Packag e

V

OUT IOUT ➁ VIN Nom. Range IIN ➃ (Case,

Model (Volts) (Amps) Typ. Max. Line Load ➂ (Volts) (Volts) (mA) Min. Typ. Pinout)

MECHANICAL SPECIFI CATIONS

2

I/O Connections

Pin Function P17

1 –Input

2 No Pin

3 On/Off Control

4 +Input

5 +Output

6 +Sense

7 Trim

8 –Sense

9 –Output

UHP-3.3/30-D48 3.3 30 80 120 ±1% ±1% 48 36-75 120/2340 86.5 88% C27, P17

N

Add "N" or "S" suffi x as desired

BOTTOM VIEW

1

3

4

5

6

7

8

9

1.900

(48.26)

2.30

(58.42)

0.39

(9.91)

0.120 MIN.
(3.05)

0.20

(5.08)

0.400

(10.16)

0.700

(17.78)

0.50

(12.70)

1.000

(25.40)

1.400

(35.56)

2.40

(60.96)

PIN DIAMETERS:

PINS 1-4, 6-8 0.040 ±0.002 (1.016 ±0.051)
PINS 5, 9 0.080 ±0.002 (2.032 ±0.051)

STANDOFF WIDTH

0.056 (1.42)

Case C27

UHP Models

3.3V @ 30A, SINGLE OUTPUT CONVERTERS

Performance/Functional Specifi cations

Typical @ TA = +25°C under nominal line voltage, full-load conditions, unless noted. ➀

Input

Input Voltage Range 36-75 Volts (48V nominal)

Overvoltage Shutdown 77-81 Volts (79V typical)

Start-Up Threshold 34-36 Volts (35V typical)

Undervoltage Shutdown 32.5-34.5 Volts (33.5V typical)

Input Current:

Normal Operating Conditions See Ordering Guide

Standby Mode:

Off, OV, UV, Thermal Shutdown TBD typical

Input Refl ected Ripple Current:

Source Impedance <0.1Ω, no external input fi ltering

TBD

Internal Input Filter Type Pi (0.01µF - TBDµH - 3.3µF)

Reverse-Polarity Protection 1 minute duration, 5A maximum

On/Off Control (Pin 3): ➂ ➃ ➅ On = open or 2.5V to +VIN,

I

IN = less than 50µA

Off = 0-0.8V, I

IN = 200µA @ 0V

"N" Suffi x Models On = 0-0.8V, I

IN = TBD @ 0V

Off = open or TBD Volts

Sync (Option, Pin 6):

➂ ➃ ➅

Input Threshold TBD Volts

Input Voltage Low TBD Volts

Input Voltage High TBD Volts

Input Resistance TBD minimum

Output High Voltage (100µA load) TBD Volts

Output Drive Current TBD

Input/Output Pulse Width TBD nsec

Output

VOUT Accuracy:

3.3V Output ±1.0% maximum

Minimum Loading Per Specifi cation No load

Ripple/Noise (20MHz BW)

➄ See Ordering Guide

Line/Load Regulation See Ordering Guide

Effi ciency See Ordering Guide

Output Voltage Sense Range +10%

Trim Range

➁ ±10%, –20%

Isolation Voltage:

Input-to-Output 1500Vdc minimum

Isolation Resistance 100MΩ

Isolation Capacitance 940pF

Current Limit Inception:

3.3V @ 98.5% V

OUT 33-35 Amps

Short Circuit Current:

3.3V Output TBD Amps average current

Overvoltage Protection: Comparator, latching

3.3V Output TBD Volts

Maximum Capacitive Loading TBD µF

Temperature Coeffi cient ±0.02% per °C

Dynamic Characteristics

Dynamic Load Response:

3.3V (50-100% load step to 1% V

OUT) TBDµsec maximum

Start-Up Time:

V

IN to VOUT TBD

On/Off to

VOUT TBD

Switching Frequency 350kHz (±35kHz)

DynaEnvironmental

MTBF ➆ Bellcore, ground fi xed, full power

25°C ambient

TBD million hours

Operating Temperature (Ambient):

➁

Without Derating (200lfm) +52°C

With Derating To +100°C (See Derating Curves)

Thermal Shutdown TBD

Storage Temperature –40 to +120°C

Physical

Dimensions 2.3" x 2.4" x 0.465" (58.4 x 61 x 11.8mm)

Pin Material Brass, solder coated

Weight: 2.24 ounces (63.5 grams)

Primary to Secondary Insulation Level Operational

➀ All models are specifi ed with external 10µF tantalum and 1µF ceramic output capacitors.
➁ See Technical Notes/Graphs for details.
➂ The On/Off Control function can be replaced with a Sync function. See Part Number

Suffi xes and Technical Notes for details.

➃ Applying a voltage to On/Off Control (pin 3) when no input power is applied to the

converter can cause permanent damage.

➄ Output noise may be further reduced with the installation of additional external output

capacitors. See Technical Notes.

➅ On/Off control is designed to be dr iven with open collector or by appropriate voltage

levels. Voltages must be referenced to the –Input (pin 1).

➆ Demonstrated MTBF available on request.

3

Absolute Maximum Ratings

Input Voltage:

Continuous: 81 Volts
Transient (100msec): 100 Volts

Input Reverse-Polarity Protection Input Current must be <5A. 1 minute
duration. Fusing recommended.

Output Current Current limited. Devices can withstand
an indefi nite output short circuit.

On/Off Control (Pin 3) Max. Voltages
Referenced to –Input (pin 1) +V

IN

Storage Temperature –40 to +120°C

Lead Temperature (Soldering, 10 sec.) +300°C

These are stress ratings. Exposure of devices to any of these conditions may adversely

affect long-term reliability. Proper operation under conditions other than those listed in the

Performance/Functional Specifi cations Table is not implied, nor recommended.

3.3V @ 30A, SINGLE OUTPUT DC/DC CONVERTERS

XHP Series

TECHNICAL NOTES

Trimming Output Voltages

UHP converters have a trim capability (pin 7) that allows users to adjust the

output voltage 5%. Adjustments can be accomplished via a trim pot, Figure 2,

or a single fi xed resistor as shown in Figures 3 and 4. A single fi xed resistor

can increase or decrease the output voltage depending on its connection.

Fixed resistors should have absolute TCR's less than 100ppm/°C to minimize

sensitivity to changes in temperature.

A single resistor connected from the Trim (pin 7) to the +Sense (pin 6), see

Figure 3, will increase the output voltage. A resistor connected from the Trim

(pin 7) to the –Sense (pin 8) will decrease the output voltage. See Figure 4.

Trim adjustments greater than +10%/–20% can have an adverse effect on the

converter's performance and are not recommended.

4

Figure 2. Trim Connections Using A Trim Pot

Figure 3. Trim Connections To Increase Output Voltages Using Fixed Resistors

Figure 4. Trim Connections To Decrease Output Voltages Using Fixed Resistors

DA TEL mak es no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do
not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifi cations are subject to change without notice. The DATEL logo is a registered DATEL, Inc. trademark.

DATEL (UK) LTD. Tadley, England Tel: [phone]

DATEL S.A.R.L. Montigny Le Bretonneux, France Tel: [phone]
DATEL GmbH München, Germany Tel: [phone]
DATEL KK Tokyo, Japan Tel: [phone], Osaka Tel: [phone]

DATEL, Inc. 11 Cabot Boulevard, Mansfi eld, MA 02048-1151
Tel: [phone] [phone] Fax: [phone]
Internet: www.datel.com Email: [e-mail]

ISO 9001 REGISTERED

INNOVATION and EX C ELL E N C

E

®

®

DS0492 2/01

LOAD

20kΩ

5-22

TURNS

+OUTPUT

–INPUT

+INPUT

ON/OFF
CONTROL

CASE

TRIM

+SENSE

–OUTPUT

–SENSE

9

8

1

4

7

5

6

3

2

LOAD

R

TRIM DOWN

+OUTPUT

–INPUT

+INPUT

ON/OFF
CONTROL

CASE

TRIM

+SENSE

–OUTPUT

–SENSE

9

8

1

4

7

5

6

3

2

LOAD

R

TRIM UP

+OUTPUT

–INPUT

+INPUT

ON/OFF
CONTROL

CASE

TRIM

+SENSE

–OUTPUT

–SENSE

9

8

1

4

7

5

6

3

2

UP

VO – 3.3

R

T (kΩ) =

–10.2

13.3(VO – 1.226)

3.3 – V

O

RT (kΩ) =

–10.2

16.31

DOWN

Output Current (Amps)

Ambient Temperature (˚C)

28 32 36 40 44 48 52 56 60 64 68 72 76 80 84

30

25

20

15

10

5

0

Output Current vs. Ambient Temperature

V

IN = 48V, Air flow from output pins to input pins

88 92 94 96 100

150lfm

200lfm

300lfm

NATURAL CONVECTION

400lfm

Accuracy of adjustment is subject to tolerances or resistor values

and factory-adjusted output accuracy. V

O = desired output voltage.

Trim Up Equation

Trim Down Equation