Delta Electronics Delphi IPM24S0B0 Manual de usuario

Delphi Series IPM24S0B0, Non-Isolated,

Integrated Point-of-Load Power Modules:

11V~36V input, 3.3~6.5V and 3A Output

The Delphi Series IPM24S0B0 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 20W 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.

IPM24S0B0 operates from an 11V~36V source and provides a

programmable output voltage from 3.3V to 6.5V. The IPM product

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

also available for output 1.2V~2.5V. Please refer to IPM240A0

datasheet for details.

OPTIONS

 SMD or SIP package

APPLICATIONS

 Telecom/DataCom

 Wireless Networks

 Optical Network Equipment

 Server and Data Storage

 Industrial/Test Equipment

FEATURES

 High efficiency: 91% @ 12Vin, 6.5V/3A

88%@24Vin,6.5V/3A

 Small size and low profile:

17.8x15.0x7.8mm (0.70”x0.59”x0.31”)

 Output voltage adjustment: 3.3V~6.5V

 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

DATASHEET

IPM24S0B0S/R03_03202007

DS_IPM24S0B0_03202007

TECHNICAL SPECIFICATIONS

TA = 25°C, airflow rate = 300 LFM, Vin = 24Vdc, nominal Vout unless otherwise noted.

PARAMETER NOTES and CONDITIONS IPM24S0B0R/S03FA

Min. Typ. Max. Units

ABSOLUTE MAXIMUM RATINGS

Input Voltage (Continuous) 0 40 Vdc

Operating Temperature Please refer to Fig.32 for the measuring point -40 +125 °C

Storage Temperature -55 +125 °C

INPUT CHARACTERISTICS

Operating Input Voltage 11 36 V

Input Under-Voltage Lockout

Turn-On Voltage Threshold 10.31 V

Turn-Off Voltage Threshold 10.10 V

Maximum Input Current Vin=Vin,min to Vin,max, Io=Io,max 2.5 A

No-Load Input Current 50 mA

Off Converter Input Current 3 10 m

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 Vin=24V, Io=Io,max, Ta=25℃3.251 3.3 3.350 Vdc

Output Voltage Adjustable Range 3.3 6.5 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 %Vo,set

℃

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, 220µF Poscap 50 100 mVp-p

RMS Full Load, 1µF ceramic, 220µF Poscap 25 50 mV

Output Current Range Vo>3.3Vdc 0 3 A

Output Voltage Over-shoot at Start-up Vin=11V to 36V, Io=0A to 3

, Ta=25℃0 1 % Vo,set

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 ms

Output Voltage Rise Time Time for Vo to rise from 10% to 90% of Vo,set, 5 9 17 ms

Maximum Output Startup Capacitive Load Full load; ESR ≧25mΩ220 µF

Full load; ESR ≧18mΩ1220 µF

EFFICIENCY

Vo=3.3V Vin=12V, Io=Io,max, Ta=25℃85.0 86.5 %

Vo=4.0V Vin=12V, Io=Io,max, Ta=25℃86.5 88.0. %

Vo=5.0V Vin=12V, Io=Io,max, Ta=25℃88.5 89.5 %

Vo=6.5V Vin=12V, Io=Io,max, Ta=25℃90.0 91.0 %

Vo=3.3V Vin=24V, Io=Io,max, Ta=25℃81.0 82.5 %

Vo=4.0V Vin=24V, Io=Io,max, Ta=25℃83.0 84.5 %

Vo=5.0V Vin=24V, Io=Io,max, Ta=25℃85.0 86.0 %

Vo=6.5V Vin=24V, Io=Io,max, Ta=25℃87.0 88.0 %

FEATURE CHARACTERISTICS

Switching Frequency 300 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 Io=80% Io,max, Ta=25℃13.74 M hours

Weight 6 grams

DS_IPM24S0B0_03202007

ELECTRICAL CHARACTERISTICS CURVES

Figure 1: Converter efficiency vs. output current

(3.30V output voltage)

Figure 2: Converter efficiency vs. output current

(4.0V output voltage)

Figure 3: Converter efficiency vs. output current

(5.0V output voltage)

Figure 4: Converter efficiency vs. output current

(6.5V output voltage)

Figure 5: Output ripple & noise at 12Vin, 3.3V/3A out

Figure 6: Output ripple & noise at 24Vin, 3.3V/3A out

54.0

59.0

64.0

69.0

74.0

79.0

84.0

89.0

0.0 0.5 1.0 1.5 2.0 2.5 3.0

Iout (A)

Efficiency%

Vin=11V

Vin=12V

Vin=24V

Vin=36V

54.0

58.0

62.0

66.0

70.0

74.0

78.0

82.0

86.0

90.0

0.0 0.5 1.0 1.5 2.0 2.5 3.0

Iout (A)

Efficiency%

Vin=11V

Vin=12V

Vin=24V

Vin=36V

63.0

67.0

71.0

75.0

79.0

83.0

87.0

91.0

95.0

0.00.51.01.52.02.53.0

Iout (A)

Efficiency%

Vin=11V

Vin=12V

Vin=24V

Vin=36V

60.0

64.0

68.0

72.0

76.0

80.0

84.0

88.0

92.0

0.0 0.5 1.0 1.5 2.0 2.5 3.0

Iout (A)

Efficiency%

Vin=11V

Vin=12V

Vin=24V

Vin=36V

DS_IPM24S0B0_03202007

ELECTRICAL CHARACTERISTICS CURVES

Figure 7: Output ripple & noise at 12Vin, 4.0V/3A out Figure 8: Output ripple & noise at 24Vin, 4.0V/3A out

Figure 9: Output ripple & noise at 12Vin, 5.0V/3A out

Figure 10: Output ripple & noise at 24Vin, 5.0V/3A out

Figure 11: Output ripple & noise at 12Vin, 6.5V/3A out

Figure 12: Output ripple & noise at 24Vin, 6.5V/3A out

DS_IPM24S0B0_03202007

ELECTRICAL CHARACTERISTICS CURVES

Figure 13: Power on waveform at 12vin, 3.3V/3A out with

application of Vin

Figure 14: Power on waveform at 12vin, 6.5V/3A out with

application of Vin

Figure 15: Power off waveform at 12vin, 3.3V/3A out with

application of Vin Figure 16: Power off waveform 12vin,6.5V/3A out with

application of Vin

Figure 17: Remote turn on delay time at 24vin, 6.5V/3A out Figure 18: Remote turn on delay time at 24vin, 6.5V/3A out

DS_IPM24S0B0_03202007

ELECTRICAL CHARACTERISTICS CURVES

Figure 19: Turn on delay at 24vin, 3.3V/3A out with

application of Vin

Figure 20: Turn on delay at 24vin, 6.5V/3A out with

application of Vin

Figure 21: Typical transient response to step load change at

0.5A/µS from 100% to 50% of Io, max at 12Vin,

6.5V out (measurement with a 1uF ceramic

Figure 22: Typical transient response to step load change at

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

6.5V out (measurement with a 1uF ceramic)

DS_IPM24S0

B0_03202007

TEST CONFIGURATIONS

(+)

(-)

BATTERY 2100uF

Electrolytic

TO OSCILLOSCOPE

Ceramic

3.3uF

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

GND

COPPER STRIP

220uF

PosCap 1uF

ceramic SCOPE Resistive

Load

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

SUPPLY

GND

LOAD

CONTACT AND

DISTRIBUTION LOSSES

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.

%100)( ×

=IiVi IoVo

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:

Arms

Vin

Vout

Vin

Vout

IoutIrms ⎟

⎠

⎞

⎜

⎝

⎛−= 1

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.

DS_IPM24S0B0_03202007

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.

On/Off

Vin

GND

IPM

Figure 27: Remote on/off implementation

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.

OutputVoltageProgramming

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 below. The module outputs

shall not be adversely affected (regulation and operation)

when the Trim pin is left open.

Trim up

(Vout-0.7)*1.43

Rtrim = Vadj-Vout (KΩ)

Trim Down

(Vadj-0.7)*5.36

Rtrim = Vout-Vadj (KΩ)

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 30). The

following equation can be used to determine the value of

Vtrim needed for a desired output voltage Vo:

DS_IPM24S0B0_03202007

FEATURES DESCRIPTIONS (CON.)

Figure 28: Trim up Circuit configuration for programming

output voltage using an external resistor

Rtrim Load

Vout

Trim

GND

Figure 29: Trim down Circuit configuration for programming

output voltage using an external resistor

Figure 30: 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, se

point tolerance of ±2% can be achieved as specified in the

electrical specification.

Table 1 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 3.3 NC NC 3.323V

Vadj 4.0 5.36K NC 4.023V

Vadj 5.0 2.21K NC 5.019V

Vadj 6.5 1.18K NC 6.493V

Vadj 3.3*(1-10%) NC 36.5K 2.984V

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, Rmargin-up, from the Trim

pin to the ground pin for margining-up the output voltage

and by connecting a resistor, Rmargin-down, from the Trim pin

to the output pin for margining-down. Figure 32 shows

the circuit configuration for output voltage margining. If

unused, leave the trim pin unconnected.

On/Off

Vin

GND

Trim

IPM

Rmargin-up

Rmargin-down

Rtrim

Figure 32: Circuit configuration for output voltage margining

DS_IPM24S0B0_03202007

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.

MODULE

IR FLOW

12.7 (0.5”)

50.8 (2.0”)

FACING PWB PWB

AIR VELOCIT

AND AMBIENT

TEMPERATURE

MEASURED BELOW

THE MODULE

25.4 (1.0”)

Figure 31: Wind tunnel test setup figure dimensions are in

millimeters and (inches)

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