DELTA RD POL 2 Datasheet

Delphi Series IPM24S0A0, Non-Isolated,

FEATURES

 High efficiency: 85% @ 12Vin, 2.5V/3A

81.5% @ 24Vin, 2.5V/3A

 Small size and low profile:

17.8x15.0x7.8mm (0.70”x0.59”x0.31”)

 Output voltage adjustment: 1.2V~2.5V

 Monotonic startup into normal and

pre-biased loads

 Input UVLO, output OCP

 Remote ON/OFF

 Output short circuit protection

 Fixed frequency operation

 Copper pad to provide excellent thermal

performance

 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

directives

Integrated Point-of-Load Power Modules:

8V~36V input, 1.2~2.5V and 3A Output

The Delphi Series IPM24S0A0 non-isolated, fully integrated

Point-of-Load (POL) power modules, are the latest offerings from a
world leader in power systems technology and manufacturing －

Delta Electronics, Inc. This product family provides up to 3A of

output current or 7.5W of output power in an industry standard,

compact, IC-like, molded package. It is highly integrated and does

not require external components to provide the point-of-load

function. A copper pad on the back of the module; in close contact

with the internal heat dissipation components; provides excellent

thermal performance. The assembly process of the modules is fully

automated with no manual assembly involved. These converters

possess outstanding electrical and thermal performance, as well as

extremely high reliability under highly stressful operating conditions.

IPM24S0A0 operates from an 8V~36V source and provides a

programmable output voltage from 1.2V to 2.5V. The IPM product

family is available in both a SMD or SIP package. IPM24S family is

also available for output 3.3~6.5V, please refer to IPM04S0B0

datasheet for details.

OPTIONS

 SMD or SIP package

APPLICATIONS

 Telecom/DataCom

 Wireless Networks

 Optical Network Equipment

 Server and Data Storage

 Industrial/Test Equipment

DATASHEET
IPM24S0A0S/R03FA_03202007

A

/

A

TECHNICAL SPECIFICATIONS

TA = 25°C, airflow rate = 300 LFM, V

PARAMETER NOTES and CONDITIONS IPM24S0A0x03FA

Min. Typ. Max. Units

ABSOLUTE MAXIMUM RATINGS

Input Voltage (Continuous) 0 40 Vdc
Operating Temperature Please refer to Fig.33 for measuring point -40 +125 °C
Storage Temperature -55 +125 °C

INPUT CHARACTERISTICS

Operating Input Voltage 8 36 V
Input Under-Voltage Lockout

Turn-On Voltage Threshold 7.3 V

Turn-Off Voltage Threshold 7.4 V
Maximum Input Current Vin=Vin,min to Vin,max, Io=Io,max 1.5 A
No-Load Input Current 50 mA
Off Converter Input Current 3 10
Input Reflected-Ripple Current P-P 0.5µH inductor, 5Hz to 20MHz 60 150 mAp-p
Input Voltage Ripple Rejection 120 Hz TBD dB

OUTPUT CHARACTERISTICS

Output Voltage Set Point
Output Voltage Adjustable Range 1.2 2.5 V
Output Voltage Regulation

Over Line Vin=Vin,min to Vin,max 0.3 % Vo,set
Over Load Io=Io,min to Io,max 0.3 % Vo,set

Over Temperature Ta=Ta,min to Ta,max 0.01 0.025
Total Output Voltage Range Over sample load, line and temperature -3.0 +3.0 % Vo,set
Output Voltage Ripple and Noise 5Hz to 20MHz bandwidth

Peak-to-Peak Full Load, 1µF ceramic, 10µF tantalum 30 100 mVp-p

RMS Full Load, 1µF ceramic, 10µF tantalum 15
Output Current Range Vo≦2.5Vdc 0 3 A
Output Voltage Over-shoot at Start-up
Output DC Current-Limit Inception 200 % Io

DYNAMIC CHARACTERISTICS

Dynamic Load Response 220µF Poscap & 1µF Ceramic load cap, 0.5A/µs

Positive Step Change in Output Current 50% Io, max to 100% Io, max 75 200 mVpk
Negative Step Change in Output Current 100% Io, max to 50% Io, max 75 200 mVpk
Setting Time to 10% of Peak Devitation 200 300 µs

Turn-On Transient Io=Io.max

Start-Up Time, From On/Off Control 17 50 ms
Start-Up Time, From Input 17 50
Output Voltage Rise Time Time for Vo to rise from 10% to 90% of Vo,set, 5 9 15 ms

Maximum Output Startup Capacitive Load

EFFICIENCY

Vo=1.2V
Vo=1.5V
Vo=1.8V
Vo=2.5V
Vo=1.2V
Vo=1.5V
Vo=1.8V
Vo=2.5V

FEATURE CHARACTERISTICS

Switching Frequency 150 kHz
ON/OFF Control, (Logic High-Module ON)

Logic High Module On 2.4 Vin,max V

Logic Low Module Off -0.2 0.8 V

ON/OFF Current Ion/off at Von/off=0 0.25 1 mA

Leakage Current Logic High, Von/off=5V 50 µA

GENERAL SPECIFICATIONS

Calculated MTBF
Weight 6 grams

= 24 Vdc, nominal Vout unless otherwise noted.

in

Vin=24V, Io=Io,max, Ta=25℃

Vin=12V to 24V, Io=0A to 1.5

Full load; ESR ≧25mΩ
Full load; ESR ≧18mΩ

Vin=12V, Io=Io,max, Ta=25℃
Vin=12V, Io=Io,max, Ta=25℃
Vin=12V, Io=Io,max, Ta=25℃
Vin=12V, Io=Io,max, Ta=25℃
Vin=24V, Io=Io,max, Ta=25℃
Vin=24V, Io=Io,max, Ta=25℃
Vin=24V, Io=Io,max, Ta=25℃
Vin=24V, Io=Io,max, Ta=25℃

Io=80% Io,max, Ta=25℃

, Ta=25℃

m

1.182 1.2 1.218

30

0 1 % Vo,set

220 µF
1220 µF

75.0 78.0 %

78.0 80.5 %

80.0 82.0 %

83.3 85.0 %

70.0 72.5 %

73.5 75.5 %

76.0 78.0 %

80.0 81.5 %

18.93 M hours

Vdc

%Vo,set

mV

ms

℃

DS_IPM24S0A0_03202007

2

ELECTRICAL CHARACTERISTICS CURVES

85

75

65

55

Efficiency (%)

45

0.0 0.5 1.0 1.5 2.0 2.5 3.0

8V
12V
24V
36V

Output Current (A)

Figure 1: Converter efficiency vs. output current

(1.2V output voltage)

95

85

75

65

55

Efficiency (%)

45

0.0 0.5 1.0 1.5 2.0 2.5 3.0

8V
12V
24V
36V

Output Current (A)

Figure 3: Converter efficiency vs. output current

(1.8V output voltage)

85

75

65

55

Efficiency (%)

45

0.0 0.5 1.0 1.5 2.0 2.5 3.0

8V
12V
24V
36V

Output Current (A)

Figure 2: Converter efficiency vs. output current

(1.5V output voltage)

95

85

75

65

55

Efficiency (%)

45

0.0 0.5 1.0 1.5 2.0 2.5 3.0

Output Current (A)

Figure 4: Converter efficiency vs. output current

(2.5V output voltage)

8V
12V
24V
36V

Figure 5: Output ripple & noise at 12Vin, 1.2V/3A out

DS_IPM24S0A0_03202007

Figure 6: Output ripple & noise at 12Vin, 1.5V/3A out

3

ELECTRICAL CHARACTERISTICS CURVES

Figure 7: Output ripple & noise at 12Vin, 1.8V/3A out

Figure 9: Output ripple & noise at 24Vin, 1.2V/3A out

Figure 8: Output ripple & noise at 12Vin, 2.5V/3A out

Figure 10: Output ripple & noise at 24Vin, 1.5V/3A out

Figure 11: Output ripple & noise at 24Vin, 1.8V/3A out

DS_IPM24S0A0_03202007

Figure 12: Output ripple & noise at 24Vin, 2.5V/3A out

4

ELECTRICAL CHARACTERISTICS CURVES

Figure 13: Power on waveform at 12vin, 2.5V/3A out with
application of Vin

Figure 15: Power off waveform at 12vin, 2.5V/3A out with
application of Vin

Figure 14: Power on waveform at 24vin, 2.5V/3A out with
application of Vin

Figure 16: Power off waveform 24vin, 2.5V/3A out with
application of Vin

Figure 17: Remote turn on delay time at 24vin, 2.5V/3A out

DS_IPM24S0A0_03202007

Figure 18: Remote turn off delay time at 24vin, 2.5V/3A out

5

ELECTRICAL CHARACTERISTICS CURVES

Figure 19: Turn on delay at 12vin, 2.5V/3A out with

application of Vin

Figure 21: T ypical transient response to step load change at

0.5A/µS from 100% to 50% of Io, max at 24Vin,

1.5V out (measurement with a 1uF ceramic
and a 220µF Poscap

Figure 20: Turn on delay at 24vin, 2.5V/3A out with

application of Vin

Figure 22: Typical transient response to step load change at

0.5A/µS from 50% to 100% of Io, max at 24Vin,

1.5V out (measurement with a 1uF ceramic
and a 220µF Poscap)

DS_IPM24S0A0_03202007

6

TEST CONFIGURATIONS

TO OSCILLOSCOPE

BATTERY

L

2

Electrolytic

100uF

3.3uF

Ceramic

VI(+)

V

I

(-)

Note: Input reflected-ripple current is measured with a

simulated source inductance. Current is
measured at the input of the module.

Figure 23: Input reflected-ripple current test setup

COPPER STRIP

Vo

DESIGN CONSIDERATIONS

Input Source Impedance

To maintain low-noise and ripple at the input voltage, it is
critical to use low ESR capacitors at the input to the
module. Figure 26 shows the input ripple voltage
(mVp-p) for various output models using 2x100uF low
ESR electrolytic capacitors (Rubycon P/N:50YXG100,
100uF/50V or equivalent) and 1x3.3.0 uF very low ESR
ceramic capacitors (TDK P/N:C4532JB1H335M,

3.3uF/50V or equivalent).
.

The input capacitance should be able to handle an AC
ripple current of at least:

Vout

IoutIrms

Vin

Vout

⎛

−= 1

⎜
⎝

Vin

⎞
⎟

⎠

Arms

Resistive

Load

GND

220uF

PosCap

1uF

ceramic

SCOPE

Note: Use a 220µF PosCap and 1µF capacitor. Scope

measurement should be made using a BNC
connector.

Figure 24: Peak-peak output noise and startup transient

measurement test setup

VIVo

I

I

SUPPLY

GND

CONTACT RESISTANCE

Figure 25: Output voltage and efficiency measurement test

setup

Note: All measurements are taken at the module

terminals. When the module is not soldered (via
socket), place Kelvin connections at module
terminals to avoid measurement errors due to
contact resistance.

DS_IPM24S0

η

A0_03202007

×

=

×

CONTACT AND

DISTRIBUTION LOSSES

IoVo
IiVi

Io

LOAD

%100)( ×

Figure 26: Input ripple voltage for various output models,

Io = 3A (Cin =2x100uF electrolytic capacitors
1x3.3uF ceramic capacitors at the input)

The power module should be connected to a low
ac-impedance input source. Highly inductive source
impedances can affect the stability of the module. An
input capacitance must be placed close to the modules
input pins to filter ripple current and ensure module
stability in the presence of inductive traces that supply
the input voltage to the module.

7

DESIGN CONSIDERATIONS

Remote On/Off

The IPM series power modules have an On/Off control
pin for output voltage remote On/Off operation. The
On/Off pin is an open collector/drain logic input signal
that is referenced to ground. When On/Off control pin is
not used, leave the pin unconnected.

The remote on/off pin is internally connected to +5Vdc
through an internal pull-up resistor. Figure 27 shows the
circuit configuration for applying the remote on/off pin.
The module will execute a soft start ON when the
transistor Q1 is in the off state.

The typical rise for this remote on/off pin at the output
voltage of 2.5V and 5.0V are shown in Figure 17 and 18.

Vin

On/Off

Q1

Figure 27: Remote on/off implementation

Vo

IPM

RL

GND

FEATURES DESCRIPTIONS

Over-Current Protection

To provide protection in an output over load fault
condition, the unit is equipped with internal over-current
protection. When the over-current protection is
triggered, the unit enters hiccup mode. The units
operate normally once the fault condition is removed.

Output Voltage Programming

The output voltage shall be externally adjustable by use
of a Trim pin. The module output shall be adjusted by
either a voltage source referenced to ground or an
external resistor be connected between trim pin and Vo or
ground. To trim-down using an external resistor, connect
a resistor between the Trim and Vo pin of the module. To
trim-up using an external resistor, connect a resistor
between the Trim and ground pin of the module. The
value of resistor is defined as is defined below. The
module outputs shall not be adversely affected
(regulation and operation) when the Trim pin is left open.

Trim up

Rtrim =

(Vout-0.7)*7.5

Vadj-Vout

Trim Down

Rtrim =

(Vadj-0.7)*5.36

Vout-Vadj

Rtrim is the external resistor in KΩ
Vout is the desired output voltage

IPM can also be programmed by applying a voltage
between the TRIM and GND pins (Figure 31). The
following equation can be used to determine the value of

Vtrim needed for a desired output voltage Vo:

Ω)

(K

Ω)

- (K

DS_IPM24S0A0_03202007

8

FEATURES DESCRIPTIONS (CON.)

Figure 29: Trim up Circuit configuration for programming

output voltage using an external resistor

Vout

Rtrim

Trim

GND

Figure 30: Trim down Circuit configuration for programming

output voltage using an external resistor

Load

The amount of power delivered by the module is the
voltage at the output terminals multiplied by the output
current. When using the trim feature, the output voltage
of the module can be increased, which at the same
output current would increase the power output of the
module. Care should be taken to ensure that the
maximum output power of the module must not exceed
the maximum rated power (

Vo.set x Io.max ≤ P max).

Voltage Margining

Output voltage margining can be implemented in the IPM
modules by connecting a resistor, R
pin to the ground pin for margining-up the output voltage
and by connecting a resistor, R
to the output pin for margining-down. Figure 32 shows
the circuit configuration for output voltage margining. If
unused, leave the trim pin unconnected.

Vin

Vo

IPM

Trim

On/Off

Rtrim

GND

margin-up, from the Trim

margin-down, from the Trim pin

Rmargin-down

Q1

Rmargin-up

Q2

Figure 31: Circuit configuration for programming output voltage
using external voltage source

Table 1 provides Rtrim values required for some common
output voltages. By using a 0.5% tolerance resistor, set
point tolerance of ±2% can be achieved as specified in the
electrical specification.

Rtrim is the external resistor in KΩ; Vout is the
desired output voltage

Rtrim setting (Ω)

Output

Measurement

R.trim_Up R.trim_Down 0A

Vo 1.2 NC NC

Vadj 1.5 12.4K NC

Vadj 1.8 6.19K NC

Vadj 2.5 2.87K NC

1.193

1.494

1.793

2.490

DS_IPM24S0A0_03202007

Figure 32: Circuit configuration for output voltage margining

9

A

Y

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 height of this fan duct is constantly kept
at 25.4mm (1’’).

Thermal Derating

Heat can be removed by increasing airflow over the
module. To enhance system reliability, the power
module should always be operated below the maximum
operating temperature. If the temperature exceeds the
maximum module temperature, reliability of the unit may
be affected.

FACING PWB

PWB

MODULE

AIR VELOCIT
AND AMBIENT

TEMPERATURE

MEASURED BELOW

THE MODULE

IR FLOW

50.8 (2.0”)

Figure 32: Wind tunnel test setup figure dimensions are in

DS_IPM24S0A0_03202007

millimeters and (inches)

12.7 (0.5”)

25.4 (1.0”)

10

THERMAL CURVES

Figure 33: Temperature measurement location

* The allowed maximum hot spot temperature is defined at 125

℃

Output Current(A)

IPM24S (Standard) Output Current vs. Ambient Temperature and Air Velocity

@ Vin=24V, Vout = 1.5V (Either Orientation)

3

2

1

0

60 65 70 75 80 85

Figure 36: Output current vs. ambient temperature and air velocity

.

@Vin=24V, Vout=1.5V(Either Orientation)

Natural

Convection

Ambient Temperature (℃)

Output Current(A)

60 65 70 75 80 85

IPM24S (Standard) Output Current vs. Ambient Temperature and Air Velocity

@ Vin=24V, Vout = 2.5V (Either Orientation)

Natural

Convection

Ambient Temperature (℃)

Figure 34: Output current vs. ambient temperature and air velocity

@Vin=24V, Vout=2.5V(Either Orientation)

Output Current(A)

3

2

IPM24S (Standard) Output Current vs. Ambient Temperature and Air Velocity

@ Vin=24V, Vout = 1.8V (Either Orientation)

Natural

Convection

Output Current(A)

3

2

1

0

60 65 70 75 80 85

IPM24S (Standard) Output Current vs. Ambient Temperature and Air Velocity

@ Vin=24V, Vout = 1.2V (Either Orientation)

Natural

Convection

Ambient Temperature (℃)

Figure 37: Output current vs. ambient temperature and air velocity

@Vin=24V, Vout=1.2V(Either Orientation)

1

0

60 65 70 75 80 85

Ambient Temperature (℃)

Figure 35: Output current vs. ambient temperature and air velocity

@Vin=24V, Vout=1.8V(Either Orientation)

DS_IPM24S0A0_03202007

11

A

PICK AND PLACE LOCATION SURFACE- MOUNT TAPE & REEL

ll dimensions are in millimeters (inches) All dimensions are in millimeters (inches)

LEAD FREE PROCESS RECOMMEND TEMP. PROFILE

Temp.

Temp.

Peak Temp. 240 ~ 245 0C

Peak Temp. 240 ~ 245 0C

20 ~ 40sec.

20 ~ 40sec.

0

0

217

C

217

2000C

2000C

150

150

250C

250C

C

0

0

C

C

Ramp up

Ramp up

0

0

C/sec

max. 3.0

C/sec

max. 3.0

Preheat time

Preheat time

60 ~ 180 sec.

60 ~ 180 sec.

Time 60 ~ 150 sec.

Time 60 ~ 150 sec.

0

0

Above 217

Above 217

C

C

Ramp down

Ramp down

0

0

max. 6.0

max. 6.0

Time

Time

C/sec

C/sec

Note: All temperature refers to topside of the package, measured on the package body surface.

DS_IPM24S0A0_03202007

12

MECHANICAL DRAWING

SMD PACKAGE SIP PACKAGE

ote: The copper pad is recommended to connect to the ground.

N

te: All dimension are in millimeters (inches) standard dimension tolerance is± 0.10(0.004”)

No

76

1234 5

RECOMMEND PWB PAD LAYOUT

RECOMMEND PWB HOLE LAYOUT

12345

12345

DS_IPM24S0A0_03202007

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PART NUMBERING SYSTEM

IPM 24 S 0A0 S 03 F A

Product

Family

Integrated POL

Module

Input Voltage

8V~36V S - Single 0A0 - programmable

Number of

Outputs

Output Voltage Package

output 1.2~2.5V

R - SIP

S - SMD

Output

Current

03 - 3A

Option Code

F- RoHS 6/6

(Lead Free)

A - Standard

Function

MODEL LIST

Model Name Input Voltage Output Voltage Output Current Efficiency (Full load@12Vin)

IPM24S0A0S/R03FA 8V ~ 36V 1.2V ~ 2.5V 3A 85%
IPM24S0B0S/R03FA 11V ~ 36V 3.3V ~ 6.5V 3A 91%

Model Name Input Voltage Output Voltage Output Current Efficiency (Full load@20Vin)

IPM24S0C0S/R03FA 20V ~ 36V 8.0V~15.0V 3A 95%

CONTACT: www.delta.com.tw/dcdc

USA:

Telephone:
East Coast: [phone]
West Coast: [phone]
Fax: [phone]
Email:

[e-mail]

WARRANTY

Delta offers a two (2) year limited warranty. Complete warranty information is listed on our web site or is available upon
request from Delta.

Information furnished by Delta is believed to be accurate and reliable. However, no responsibility is assumed by Delta
for its use, nor for any infringements 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 Delta. Delta reserves the right to revise these
specifications at any time, without notice

Europe:

Telephone: [phone]
Fax: [phone]
Email:

[e-mail]

.

Asia & the rest of world:

Telephone: [phone] x6220
Fax: [phone]
Email:

[e-mail]

DS_IPM24S0A0_03202007

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