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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
Delphi Series IPM24S0A0, Non-Isolated, 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.
DATASHEET IPM24S0A0S/R03FA_0627200 6
directives
OPTIONS
SMD or SIP package
APPLICATIONS
Telecom/DataCom Wireless Networks Optical Network Equipment Server and Data Storage Industrial/Test Equipment
Delta Electronics, Inc.
TECHNICAL SPECIFICATIONS
TA = 25C, airflow rate = 300 LFM, Vin = 24 Vdc, nominal Vout unless otherwise noted.
PARAMETER
ABSOLUTE MAXIMUM RATINGS Input Voltage (Continuous) Operating Temperature Storage Temperature INPUT CHARACTERISTICS Operating Input Voltage Input Under-Voltage Lockout Turn-On Voltage Threshold Turn-Off Voltage Threshold Maximum Input Current No-Load Input Current Off Converter Input Current Input Reflected-Ripple Current Input Voltage Ripple Rejection OUTPUT CHARACTERISTICS Output Voltage Set Point Output Voltage Adjustable Range Output Voltage Regulation Over Line Over Load Over Temperature Total Output Voltage Range Output Voltage Ripple and Noise Peak-to-Peak RMS Output Current Range Output Voltage Over-shoot at Start-up Output DC Current-Limit Inception DYNAMIC CHARACTERISTICS Dynamic Load Response Positive Step Change in Output Current Negative Step Change in Output Current Setting Time to 10% of Peak Devitation Turn-On Transient Start-Up Time, From On/Off Control Start-Up Time, From Input Output Voltage Rise Time 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 ON/OFF Control, (Logic High-Module ON) Logic High Logic Low ON/OFF Current Leakage Current GENERAL SPECIFICATIONS Calculated MTBF Weight
NOTES and CONDITIONS
Min. Please refer to Fig.33 for measuring point 0 -40 -55 8
IPM24S0A0x03FA
Typ. Max. 40 +125 +125 36 7.3 7.4 Units Vdc C C V V V A mA mA mAp-p dB Vdc V % Vo,set % Vo,set %Vo,set/ % Vo,set mVp-p mV A % Vo,set % Io mVpk mVpk s ms ms ms F F % % % % % % % % kHz Vin,max 0.8 1 50 V V mA A M hours grams
Vin=Vin,min to Vin,max, Io=Io,max P-P 0.5H inductor, 5Hz to 20MHz 120 Hz Vin=24V, Io=Io,max, Ta=25 Vin=Vin,min to Vin,max Io=Io,min to Io,max Ta=Ta,min to Ta,max Over sample load, line and temperature 5Hz to 20MHz bandwidth Full Load, 1F ceramic, 10F tantalum Full Load, 1F ceramic, 10F tantalum Vo2.5Vdc Vin=12V to 24V, Io=0A to 1.5A, Ta=25 220F Poscap & 1F Ceramic load cap, 0.5A/s 50% Io, max to 100% Io, max 100% Io, max to 50% Io, max Io=Io.max Time for Vo to rise from 10% to 90% of Vo,set, Full load; ESR 25m Full load; ESR 18m 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 5 17 17 9 1.182 1.2 50 3 60 TBD 1.2 0.3 0.3 0.01 -3.0 30 15 0 0 200 75 75 200
1.5 10 150 1.218 2.5
0.025 +3.0 100 30 3 1
200 200 300 50 50 15 220 1220
75.0 78.0 80.0 83.3 70.0 73.5 76.0 80.0
78.0 80.5 82.0 85.0 72.5 75.5 78.0 81.5 150
Module On Module Off Ion/off at Von/off=0 Logic High, Von/off=5V Io=80% Io,max, Ta=25
2.4 -0.2 0.25 18.93 6
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ELECTRICAL CHARACTERISTICS CURVES
85 85
Efficiency (%)
Efficiency (%)
75 65 55 45 0.0 0.5 1.0 1.5 2.0 2.5 3.0
75 65 55 45 0.0 0.5 1.0 1.5 2.0 2.5 3.0
8V 12V 24V 36V
8V 12V 24V 36V
Output Current (A)
Output Current (A)
Figure 1: Converter efficiency vs. output current (1.2V output voltage) Figure 2: Converter efficiency vs. output current (1.5V output voltage)
95
95
Efficiency (%)
75 65 55 45 0.0 0.5 1.0 1.5 2.0 2.5 3.0
8V 12V 24V 36V
Efficiency (%)
85
85 75 65 55 45 0.0 0.5 1.0 1.5 2.0 2.5 3.0
8V 12V 24V 36V
Output Current (A)
Output Current (A)
Figure 3: Converter efficiency vs. output current (1.8V output voltage) Figure 4: Converter efficiency vs. output current (2.5V output voltage)
Figure 5: Output ripple & noise at 12Vin, 1.2V/3A out
Figure 6: Output ripple & noise at 12Vin, 1.5V/3A out
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ELECTRICAL CHARACTERISTICS CURVES
Figure 7: Output ripple & noise at 12Vin, 1.8V/3A out
Figure 8: Output ripple & noise at 12Vin, 2.5V/3A out
Figure 9: Output ripple & noise at 24Vin, 1.2V/3A out
Figure 10: Output ripple & noise at 24Vin, 1.5V/3A out
Figure 11: Output ripple & noise at 24Vin, 1.8V/3A out
Figure 12: Output ripple & noise at 24Vin, 2.5V/3A out
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ELECTRICAL CHARACTERISTICS CURVES
Figure 13: Power on 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 15: Power off waveform at 12vin, 2.5V/3A out with application of Vin
Figure 16: Power off waveform 24vin, 2.5V/3A out with application of Vin
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Figure 17: Remote turn on delay time at 24vin, 2.5V/3A out
Figure 18: Remote turn off delay time at 24vin, 2.5V/3A out
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ELECTRICAL CHARACTERISTICS CURVES
Figure 19: Turn on delay at 12vin, 2.5V/3A out with application of Vin
Figure 20: Turn on delay at 24vin, 2.5V/3A out with application of Vin
Figure 21: Typical transient response to step load change at 0.5A/S from 100% to 50% of Io, max at 24Vin, 1.5V out (measurement with a 1uF ceramic and a 220F Poscap
Figure 22: Typical transient response to step load change at 0.5A/S from 50% to 100% of Io, max at 24Vin, 1.5V out (measurement with a 1uF ceramic and a 220F Poscap)
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TEST CONFIGURATIONS
TO OSCILLOSCOPE
DESIGN CONSIDERATIONS
Input Source Impedance
L
2 100uF Electrolytic
VI(+)
3.3uF Ceramic
BATTERY
VI(-)
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:
Irms = Iout Vout Vout 1 - Vin Vin Arms
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
220uF 1uF PosCap ceramic SCOPE Resistive Load
GND
Note: Use a 220F PosCap and 1F capacitor. Scope measurement should be made using a BNC connector.
Figure 24: Peak-peak output noise and startup transient measurement test setup
CONTACT AND DISTRIBUTION LOSSES
Figure 26: Input ripple voltage for various output models, Io = 3A (Cin =2x100uF electrolytic capacitors 1x3.3uF ceramic capacitors at the input)
VI II SUPPLY
Vo Io LOAD
GND
CONTACT RESISTANCE
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.
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.
Vo x Io ) x 100 % DS_IPM24S0A0_06272006 Vi x Ii
=(
8
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.
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
Vin
Vo
IPM
On/Off
RL
Q1
GND
(K)
Trim Down
Figure 27: Remote on/off implementation
Rtrim =
(Vadj-0.7)*5.36 Vout-Vadj
- (K)
Rtrim is the external resistor in K 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:
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FEATURES DESCRIPTIONS (CON.)
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
Figure 29: Trim up Circuit configuration for programming output voltage using an external resistor
Vout Rtrim Load Trim
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.
Vin
Vo
GND
IPM
On/Off Trim
Rmargin-down Q1
Figure 30:
Trim down Circuit configuration for programming output voltage using an external resistor
Rmargin-up Rtrim Q2
GND
Figure 32: Circuit configuration for output voltage margining
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 K; Vout is the desired output voltage Output Rtrim setting () Measurement R.trim_Up R.trim_Down 0A 1.193 Vo 1.2 NC NC Vadj Vadj Vadj 1.5 1.8 2.5 12.4K 6.19K 2.87K NC NC NC 1.494 1.793 2.490
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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 VELOCITY AND AMBIENT TEMPERATURE MEASURED BELOW THE MODULE
AIR FLOW
50.8 (2.0")
12.7 (0.5") 25.4 (1.0")
Figure 32: Wind tunnel test setup figure dimensions are in millimeters and (inches)
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THERMAL CURVES
Output Current(A)
IPM24S (Standard) Output Current vs. Ambient Temperature and Air Velocity @ Vin=24V, Vout = 1.5V (Either Orientation)
3
Natural Convection
2
1
0 60 65 70 75 80 85 Ambient Temperature ()
Figure 33: Temperature measurement location * The allowed maximum hot spot temperature is defined at 125.
IPM24S (Standard) Output Current vs. Ambient Temperature and Air Velocity @ Vin=24V, Vout = 2.5V (Either Orientation)
Figure 36: Output current vs. ambient temperature and air velocity @Vin=24V, Vout=1.5V(Either Orientation)
IPM24S (Standard) Output Current vs. Ambient Temperature and Air Velocity @ Vin=24V, Vout = 1.2V (Either Orientation)
Output Current(A)
Output Current(A)
3
3
Natural Convection
2
Natural Convection
2
1
1
0 60 65 70 75 80 85 Ambient Temperature ()
0 60 65 70 75 80 85 Ambient Temperature ()
Figure 34: Output current vs. ambient temperature and air velocity @Vin=24V, Vout=2.5V(Either Orientation)
IPM24S (Standard) Output Current vs. Ambient Temperature and Air Velocity @ Vin=24V, Vout = 1.8V (Either Orientation)
Figure 37: Output current vs. ambient temperature and air velocity @Vin=24V, Vout=1.2V(Either Orientation)
Output Current(A)
3
Natural Convection
2
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)
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PICK AND PLACE LOCATION
SURFACE- MOUNT TAPE & REEL
All dimensions are in millimeters (inches)
All dimensions are in millimeters (inches)
LEAD FREE PROCESS RECOMMEND TEMP. PROFILE
Temp.
Peak Temp. ~ 220
210
200 150
Ramp down max. 4 /sec
Preheat time
90~150 sec
Ramp up max. 3 /sec
Time Limited 60 sec above 210
25
Time
Note: All temperature refers to topside of the package, measured on the package body surface.
LEADED (Sn/Pb) PROCESS RECOMMEND TEMP. PROFILE
Temp.
Peak Temp. ~ 225
183 150 100
Preheat time 60~150 sec Ramp up max. 3 /sec 60 ~ 120 sec
Ramp down max. 4 /sec
25
Time
Note: All temperature refers to assembly application board, measured on the land of assembly application board.
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MECHANICAL DRAWING
SMD PACKAGE SIP PACKAGE
12345
RECOMMEND PWB PAD LAYOUT
RECOMMEND PWB HOLE LAYOUT
Note: The copper pad is recommended to connect to the ground.
7 6
12345
12345
Note: All dimension are in millimeters (inches) standard dimension tolerance is 0.10(0.004")
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PART NUMBERING SYSTEM
IPM
Product Family
Integrated POL Module
24
Input Voltage
8V~36V
S
Number of Outputs
S - Single
0A0
Output Voltage
0A0 - programmable output 1.2~2.5V
S
Package
R - SIP S - SMD
03
Output Current
03 - 3A
F
A
Option Code
F- RoHS 6/6 (Lead Free)
A - Standard Function
MODEL LIST
Model Name
IPM24S0A0R/S03FA IPM24S0B0R/S03FA IPM24S0C0R/S03FA
Input Voltage
8V ~ 36V 11V ~ 36V 20V ~ 36V
Output Voltage
1.2 ~ 2.5V 3.3 ~ 6.5V 8 ~ 15V
Output Current
3A 3A 3A
Efficiency (Full load@12Vin)
85% 91% 95%
CONTACT: www.delta.com.tw/dcdc
USA: Telephone: East Coast: (888) 335 8201 West Coast: (888) 335 8208 Fax: (978) 656 3964 Email: DCDC@delta-corp.com Europe: Telephone: +41 31 998 53 11 Fax: +41 31 998 53 53 Email: DCDC@delta-es.tw Asia & the rest of world: Telephone: +886 3 4526107 x6220 Fax: +886 3 4513485 Email: DCDC@delta.com.tw
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.
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