Delta Electronics Delphi S36SS Bedienungsanleitung

DATASHEET

DS_S36SS3R304_04062006

Delta Electronics, Inc.

Delphi Series S36SS, 15W Family

DC/DC Power Modules: 18Vin to 60Vin, 3.3V/4.5A out

The Delphi Series S36SS, surface mountable, wide ranging input, single

output, isolated DC/DC converter, is the latest offering from a world

leader in power system and technology and manufacturing – Delta

Electronics, Inc. This product family provides up to 15 watts of power o

up to 4.5A of output current in an industry standard footprint. With

creative design technology and optimization of component placement, the

Delphi Series Small Power converters possess outstanding electrical and

thermal performance, as well as extremely high reliability under highl

stressful operating conditions.

ll models are protected from abnormal

input/output voltage and current conditions.

APPLICATIONS

 Telecom/DataCom

 Wireless Networks

 Optical Network Equipment

 Server and Data Storage

 Industrial/Test Equipment

OPTIONS

 Positive on/off logic

FEATURES

 High efficiency: 81% @ 3.3V/4.5A

 Standard footprint

 Surface mountable

 Industry standard pin out

 Size: 45.5mm x 28.0mm x 12.2mm

(1.79” x 1.10” x 0.48”)

 Fixed frequency operation

 Input UVLO, OVLO, Output OCP, OVP

 No minimum load required

 Wide Input voltage range: 18V~60V

 ISO 9001, TL 9000, ISO 14001, QS9000,

OHSAS18001 certified manufacturing

facility

 UL/cUL 60950 (US & Canada) recognized,

and TUV (EN60950) certified

 CE mark meets 73/23/EEC and

93/68/EEC directive

TECHNICAL SPECIFICATIONS

(TA=25°C, airflow rate=300 LFM, Vin=48Vdc, nominal Vout unless otherwise noted.)

PARAMETER NOTES and CONDITIONS S36SS3R304NRFA

Min. Typ. Max. Units

ABSOLUTE MAXIMUM RATINGS

Input Voltage

Continuous 70 Vdc

Transient (100ms) 100ms 100 Vdc

Operating Temperature Refer to Figure 16 for the measuring point -40 105 °C

Storage Temperature -55 125 °C

Input/Output Isolation Voltage 1 minute 1500 Vdc

INPUT CHARACTERISTICS

Operating Input Voltage 18 60 V

Input Under-Voltage Lockout

Turn-On Voltage Threshold 16 17 18 V

Turn-Off Voltage Threshold 15 16 17 V

Lockout Hysteresis Voltage 0.5 1.5 2.5 V

Input Over-Voltage Lockout

Turn-0ff Voltage Threshold 64 V

Turn-on Voltage Threshold 63 V

Maximum Input Current 100% Load, 18Vin 1.3 A

No-Load Input Current 30 mA

Off Converter Input Current 4 m

Inrush Current(I2t) 1 A2s

Input Reflected-Ripple Current P-P thru 12µH inductor, 5Hz to 20MHz 5 mA

Input Voltage Ripple Rejection 120 Hz 55 dB

OUTPUT CHARACTERISTICS

Output Voltage Set Point Vin=48V, Io=50%Io.max, Tc=25℃3.23 3.30 3.37 V

Output Voltage Regulation

Over Load Io=Io,min to Io,max ±5 ±15 mV

Over Line Vin=18V to 60V ±2 ±7 mV

Over Temperature Tc=-40℃to 100℃100 300

m/℃

Total Output Voltage Range Over sample load, line and temperature 3.16 3.44 V

Output Voltage Ripple and Noise 5Hz to 20MHz bandwidth

Peak-to-Peak Full Load, 1µF ceramic, 10µF tantalum 60 100 mV

RMS Full Load, 1µF ceramic, 10µF tantalum 15 25 mV

Operating Output Current Range 0 4.5 A

Output DC Current-Limit Inception Output Voltage 10% Low 5 6 8 A

DYNAMIC CHARACTERISTICS

Output Voltage Current Transient 48V, 10µF Tan & 1µF Ceramic load cap, 0.1A/µs

Positive Step Change in Output Current 50% Io,max to 100% Io,max 65 100 mV

Negative Step Change in Output Current 100% Io,max to 50% Io.max 65 100 mV

Settling Time to 1% of Final value 600 µs

Turn-On Transient

Start-Up Time, From On/Off Control 6 10 ms

Start-Up Time, From Input 5 10 ms

Maximum Output Capacitance Full load; 5% overshoot of Vout at startup 2000 µF

EFFICIENCY

100% Load 78 81 %

ISOLATION CHARACTERISTICS

Isolation Voltage 1500 V

Isolation Resistance 100 MΩ

Isolation Capacitance 500 pF

FEATURE CHARACTERISTICS

Switching Frequency 280 kHz

ON/OFF Control, (Logic Low-Module ON)

Logic Low Von/off at Ion/off=1.0mA 0 0.7 V

Logic High Von/off at Ion/off=0.0 µA 2 15 V

ON/OFF Current Ion/off at Von/off=0.0V 1 mA

Leakage Current Logic High, Von/off=15V 50 uA

Output Voltage Trim Range

cross Trim Pin & +Vo or

–

Vo, Pout≦max rated -10 +10 %

Output Over-Voltage Protection(Hiccup) Over full temp range; % of nominal Vout 115 125 140 %

GENERAL SPECIFICATIONS

Calculated MTBF Io=80% of Io, max; Tc=40°C 4.5 M hours

Weight (Open Frame) 12.5 grams

ELECTRICAL CHARACTERISTICS CURVES

Figure 3: Typical input characteristics at room temperature. Figure 4: Turn-on transient at full rated load current (resistive

load) (2 ms/div). Top Trace: Vout (1V/div); Bottom Trace:

ON/OFF Control (2V/div).

Figure 1: Efficiency vs. load current for minimum, nominal, and

maximum input voltage at 25°C. Figure 2: Power dissipation vs. load current for minimum,

nominal, and maximum input voltage at 25°C.

0.00

0.20

0.40

0.60

0.80

1.00

15 20 25 30 35 40 45 50 55 60

INPUT V OL TA GE ( V )

INPUT CURRENT (A)

Io=4.5A

I0=2.7A

Io=0.45

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

0.5 1 1.5 2 2.5 3 3.5 4 4.5

OUTPUT CURRENT(A)

POWER DISSIPATION (W)

18Vin

24Vin

48Vin

60Vin

0.5 1 1.5 2 2.5 3 3.5 4 4.5

OUTPUT CURRENT (A)

EFFICIENCY (%)

18Vin

24Vin

48Vin

60Vin

ELECTRICAL CHARACTERISTICS CURVES

Figure5: Turn-on transient at zero load current (2 ms/div). Top

Trace: Vout (1V/div); Bottom Trace: ON/OFF Control (2V/div).

Figure 6: Output voltage response to step-change in load

current (50%-100%-50% of Io, max; di/dt = 0.1A/µs). Load

cap: 10µF, 100 m

Ω

ESR tantalum capacitor and 1µF

ceramic capacitor. Top Trace: Vout (50mV/div), Bottom

Trace: Iout (2A/div).

20﹫100KHz℃20 ℃100KHz﹫

Ω

ESR< 0.3 ESR< 0.3

TEST

12uH

Cs:68uF/100V 68uF/100V

Vi(-)

Vi(+)

Ω

Figure 7: Test set-up diagram showing measurement points for

Input Reflected Ripple Current (Figure 8).

Note: Measured input reflected-ripple current with a simulated

source Inductance (LTEST

)

of 12 µH. Capacitor Cs offset possible

battery impedance.

Figure 8:.Input Reflected Ripple Current, is, at full rated

output current and nominal input voltage with 12µH source

impedance and 68µF electrolytic capacitor (2 mA/div).

ELECTRICAL CHARACTERISTICS CURVES

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

0.0 2.0 4.0 6.0 8.0

LOA D CURRENT ( A )

OUTPUT VOLTAGE (

Vin=48V

Figure 11: Output voltage vs. load current showing typical

current limit curves and converter shutdown points.

StripCopper

Vo(-)

Vo(+)

10u 1u SCOPE RESISTIV

LOAD

Figure 9:Output voltage noise and ripple measurement test

setup. Scope measurement should be made using a BNC

cable (length shorter than 20 inches). Position the load

between 51 mm to 76 mm (2 inches to 3 inches) from the

module.

Figure 10: Output voltage ripple at nominal input voltage and

rated load current (20 mV/div). Load capacitance: 1µF ceramic

capacitor and 10µF tantalum capacitor. Bandwidth: 20 MHz.

DESIGN CONSIDERATION

Input Source Impedance

The impedance of the input source connecting to the

DC/DC power modules will interact with the modules

and affect the stability. A low ac-impedance input

source is recommended. If the source inductance is

more than a few µH, we advise adding a 10 to 100 µF

electrolytic capacitor (ESR < 0.7 Ωat 100 kHz)

mounted close to the input of the module to improve the

stability.

Layout and EMC Considerations

Delta’s DC/DC power modules are designed to operate

in a wide variety of systems and applications. For

design assistance with EMC compliance and related

PWB layout issues, please contact Delta’s technical

support team. An external input filter module is

available for easier EMC compliance design.

Application notes to assist designers in addressing

these issues are pending release.

Safety Considerations

The power module must be installed in compliance with

the spacing and separation requirements of the end-

user’s safety agency standard if the system in which the

power module is to be used must meet safety agency

requirements.

When the input source is 60Vdc or below, the power

module meets SELV (safety extra-low voltage)

requirements. If the input source is a hazardous voltage

which is greater than 60 Vdc and less than or equal to

75 Vdc, for the module’s output to meet SELV

requirements, all of the following must be met:

 The input source must be insulated from any

hazardous voltages, including the ac mains, with

reinforced insulation.

 One Vi pin and one Vo pin are grounded, or all the

input and output pins are kept floating.

 The input terminals of the module are not operator

accessible.



SELV reliability test is conducted on the system

where the module is used to ensure that under a

single fault, hazardous voltage does not appear at

the module’s output.

Do not ground one of the input pins without grounding

one of the output pins. This connection may allow a non-

SELV voltage to appear between the output pin and

ground.

This power module is not internally fused. To achieve

optimum safety and system protection, an input line

fuse is highly recommended. The safety agencies

require a normal-blow fuse with 3A maximum rating to

be installed in the ungrounded lead. A lower rated fuse

can be used based on the maximum inrush transient

energy and maximum input current.

Soldering and Cleaning Considerations

Post solder cleaning is usually the final board assembly

process before the board or system undergoes

electrical testing. Inadequate cleaning and/or drying

may lower the reliability of a power module and

severely affect the finished circuit board assembly test.

Adequate cleaning and/or drying is especially important

for un-encapsulated and/or open frame type power

modules. For assistance on appropriate soldering and

cleaning procedures, please contact Delta’s technical

support team.

FEATURES DESCRIPTIONS

Over-Current Protection

The modules include an internal output over-current

protection circuit, which will endure current limiting for

an unlimited duration during output overload. If the

output current exceeds the OCP set point, the modules

will automatically shut down (hiccup mode).

The modules will try to restart after shutdown. If the

overload condition still exists, the module will shut down

again. This restart trial will continue until the overload

condition is corrected.

Over-Voltage Protection

The modules include an internal output over-voltage

protection circuit, which monitors the voltage on the

output terminals. If this voltage exceeds the over-

voltage set point, the module will shut down (Hiccup

mode). The modules will try to restart after shutdown. If

the fault condition still exists, the module will shut down

again. This restart trial will continue until the fault

condition is corrected.

Output Voltage Adjustment (TRIM)

To increase or decrease the output voltage set point, the

modules may be connected with an external resistor

between the TRIM pin and either the Vo+ or Vo -. The

TRIM pin should be left open if this feature is not used.

[]

ΚΩ

96.382.10

018.01.03.3 1.0637.32373.20

downRtrim =−

+×

×−

=−

Vo(+)

Vo(-)

Trim

Rtrim-up

Figure 13: Circuit configuration for trim-up (increase output

voltage)

If the external resistor is connected between the TRIM

and Vo - the output voltage set point increases. The

external resistor value required to obtain a percentage

output voltage change △Vo% is defined as:

[]

ΚΩ

∆

2.10

018.0Vo3.3 2636.12

upRtrim −

−

=−

Ex. When trim-up +10% (3.3V X 1.1 = 3.63V)

[]

ΚΩ

11.292.10

018.01.03.3 2636.12

upRtrim =−

−×

=−

Care should be taken to ensure that the maximum

output power of the module remains at or below the

maximum rated power.

Remote ON/OFF

The remote on/off feature on the module can be either

negative or positive logic. Negative logic turns the

module on during a logic low and off during a logic high.

Positive logic turns the modules on during a logic high

and off during a logic low. Remote on/off can be

controlled by an external switch between the on/off

terminal and the Vi(-) terminal. The switch can be an

open collector or open drain. If the remote on/off feature

is not used, please short the on/off pin to Vi(-) for

negative logic and let the pin open for positive logic.

ON/OFF

Vi(-)

Vi(+) Vo(+)

Trim

Vo(-)

Figure 14: Circuit configuration for remote ON/OFF

Vo(+)

Vo(-)

Trim trim-down

Figure 12: Circuit configuration for trim-down (decrease output

voltage)

If the external resistor is connected between the TRIM

and Vo+ pins, the output voltage set point decreases.

The external resistor value required to obtain a

percentage of output voltage change △Vo% is defined

as:

[]

ΚΩ

∆

2.10

018.0Vo3.3 Vo673.32373.20

downRtrim −

−

=−

Ex. When trim-down –10% (3.3V X 0.9 = 2.97V)

Figure 15: Wind tunnel test setup

THERMAL CONSIDERATIONS

Thermal management is an important part of the system

design. To ensure proper, reliable operation, sufficient

cooling of the power module is needed over the entire

temperature range of the module. Convection cooling is

usually the dominant mode of heat transfer.

Hence, the choice of equipment to characterize the

thermal performance of the power module is a wind

tunnel.

Thermal Testing Setup

Delta’s DC/DC power modules are characterized in

heated vertical wind tunnels that simulate the thermal

environments encountered in most electronics

equipment. This type of equipment commonly uses

vertically mounted circuit cards in cabinet racks in which

the power modules are mounted.

The following figure shows the wind tunnel

characterization setup. The power module is mounted

on a test PWB and is vertically positioned within the

wind tunnel. The space between the neighboring PWB

and the top of the power module or a heat sink is

6.35mm (0.25”).

Thermal Derating

Heat can be removed by increasing airflow over the

module. The module’s hot spot temperature is defined a

+105°C. To enhance system reliability, the powe

module should always be operated below the maximum

operating temperature. If the temperature exceeds the

maximum module temperature, reliability of the unit ma

be affected.

Note: Wind Tunnel Test Setup Figure Dimensions are in millimeters and (Inches)

10 (0.4”)

MODULE

IR FLOW

50.8

(

2.0”

)

FACING PWB PWB

AIR VELOCIT

AND AMBIENT

TEMPERATURE

MEASURED BELOW

THE MODULE

Figure 18: Output current vs. ambient temperature and air

velocity (Vin=48V)

S36SS3R304(Standard) Output Current vs. Ambient Temperature and Air Velocity

@ Vin = 48V

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

40 45 50 55 60 65 70 75 80 85

Ambient Temperature (℃)

Output Current(A)

Natural

Convection

100LFM

200LFM

300LFM

400LFM

500LFM

600LFM

Figure 17: Output current vs. ambient temperature and air

velocity (Vin=24V)

S36SS3R304(Standard) Output Current vs. Ambient Temperature and Air Velocity

@ Vin = 24V

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

40 45 50 55 60 65 70 75 80 85

Ambient Temperature (℃)

Output Current(A)

Natural

Convection

100LFM

200LFM

300LFM

400LFM

THERMAL CURVES

Figure 16: Temperature measurement location. Pin locations

are for reference only.

＊

The allowed maximum hot spot temperature is defined at

105

℃

S36SS3R304(Standard) Output Current vs. Ambient Temperature and Air Velocity

@ Vin = 60V

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

40 45 50 55 60 65 70 75 80 85

Ambient Temperature (℃)

Output Current(A)

Natural

Convection

100LFM

200LFM

300LFM

400LFM

500LFM

600LFM

Figure 19: Output current vs. ambient temperature and air

velocity (Vin=60V)

Pin No. Name Function

1 +Vout Positive output voltage

2 -Vout Negative output voltage

3 Trim Output voltage trim

4 NC No Connection

5 NC No Connection

6 NC No Connection

7 NC No Connection

8 ON/OFF ON/OFF Logic

9 NC No Connection

10 NC No Connection

11 -Vin Negative input voltage

12 +Vin Positive input voltage

MECHANICAL DRAWING

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