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 = 25°C, airflow rate = 300 LFM, Vin = 24 Vdc, nominal Vout unless otherwise noted. PARAMETER NOTES and CONDITIONS IPM24S0A0x03FA Min. 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 DS_IPM24S0A0_06272006 Please refer to Fig.33 for measuring point Typ. Max. Units 0 -40 -55 40 +125 +125 Vdc °C °C 8 36 7.3 7.4 Vin=Vin,min to Vin,max, Io=Io,max 1.5 50 3 60 TBD P-P 0.5µH 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, 1µF ceramic, 10µF tantalum Full Load, 1µF ceramic, 10µF tantalum Vo≦2.5Vdc Vin=12V to 24V, Io=0A to 1.5A, Ta=25℃ 1.182 1.2 1.2 0.3 0.3 0.01 -3.0 30 15 10 150 V V V A mA mA mAp-p dB 1.218 2.5 Vdc V 0.025 +3.0 % Vo,set % Vo,set %Vo,set/℃ % Vo,set 100 30 3 1 mVp-p mV A % Vo,set % Io 75 75 200 200 200 300 mVpk mVpk µs 5 17 17 9 50 50 15 220 1220 ms ms ms µF µF 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 kHz 0 0 200 220µF Poscap & 1µF Ceramic load cap, 0.5A/µs 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 ≧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℃ 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 Vin,max 0.8 1 50 V V mA µA M hours grams 2 ELECTRICAL CHARACTERISTICS CURVES 85 Efficiency (%) Efficiency (%) 85 75 65 8V 12V 24V 36V 55 75 65 8V 12V 24V 36V 55 45 0.0 45 0.0 0.5 1.0 1.5 2.0 2.5 0.5 1.0 1.5 2.0 2.5 3.0 Output Current (A) 3.0 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 85 Efficiency (%) Efficiency (%) 95 75 8V 12V 24V 36V 65 55 45 0.0 0.5 1.0 1.5 2.0 2.5 3.0 Output Current (A) 85 75 8V 12V 24V 36V 65 55 45 0.0 0.5 1.0 1.5 2.0 2.5 3.0 Output Current (A) Figure 3: Converter efficiency vs. output current (1.8V output voltage) Figure 5: Output ripple & noise at 12Vin, 1.2V/3A out DS_IPM24S0A0_06272006 Figure 4: Converter efficiency vs. output current (2.5V output voltage) 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 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 DS_IPM24S0A0_06272006 4 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 DS_IPM24S0A0_06272006 5 Figure 17: Remote turn on delay time at 24vin, 2.5V/3A out DS_IPM24S0A0_06272006 Figure 18: Remote turn off delay time at 24vin, 2.5V/3A out 6 ELECTRICAL CHARACTERISTICS CURVES Figure 19: Turn on delay at 12vin, 2.5V/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 24Vin, 1.5V out (measurement with a 1uF ceramic and a 220µF Poscap DS_IPM24S0A0_06272006 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) 7 DESIGN CONSIDERATIONS TEST CONFIGURATIONS Input Source Impedance TO OSCILLOSCOPE L VI(+) 3.3uF Ceramic 2 100uF Electrolytic BATTERY VI(-) 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 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 COPPER STRIP Vo 220uF 1uF PosCap ceramic SCOPE Resistive Load GND 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 CONTACT AND DISTRIBUTION LOSSES VI Vo II Io LOAD SUPPLY GND CONTACT RESISTANCE 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. 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 × Io ) × 100 % DS_IPM24S0A0_06272006 Vi × Ii η =( 8 DESIGN CONSIDERATIONS FEATURES DESCRIPTIONS Remote On/Off Over-Current Protection 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. Vo Vin IPM On/Off 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. RL Trim up Q1 Rtrim = GND (Vout-0.7)*7.5 Vadj-Vout (KΩ) (Vadj-0.7)*5.36 Vout-Vadj - (KΩ) Trim Down Figure 27: Remote on/off implementation Rtrim = 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: DS_IPM24S0A0_06272006 9 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 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. Load Trim Vo Vin IPM GND Rmargin-down Q1 Figure 30: Trim down Circuit configuration for programming On/Off Trim 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 KΩ; Vout is the desired output voltage Output Rtrim setting (Ω) Measurement R.trim_Up R.trim_Down 0A 1.193 Vo 1.2 NC NC Vadj 1.5 12.4K NC 1.494 Vadj 1.8 6.19K NC 1.793 Vadj 2.5 2.87K NC 2.490 DS_IPM24S0A0_06272006 10 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. PWB FACING PWB MODULE AIR VELOCITY AND AMBIENT TEMPERATURE MEASURED BELOW THE MODULE 50.8 (2.0”) AIR FLOW 12.7 (0.5”) 25.4 (1.0”) Figure 32: Wind tunnel test setup figure dimensions are in millimeters and (inches) DS_IPM24S0A0_06272006 11 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 Figure 33: Temperature measurement location * The allowed maximum hot spot temperature is defined at 125℃. Output Current(A) 65 70 75 80 85 Ambient Temperature (℃) 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 = 2.5V (Either Orientation) Output Current(A) IPM24S (Standard) Output Current vs. Ambient Temperature and Air Velocity @ Vin=24V, Vout = 1.2V (Either Orientation) 3 3 Natural Convection Natural Convection 2 2 1 1 0 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) Output Current(A) 60 65 70 75 80 85 Ambient Temperature (℃) Figure 37: Output current vs. ambient temperature and air velocity @Vin=24V, Vout=1.2V(Either Orientation) IPM24S (Standard) Output Current vs. Ambient Temperature and Air Velocity @ Vin=24V, Vout = 1.8V (Either Orientation) 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) DS_IPM24S0A0_06272006 12 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℃ Ramp down max. 4℃ /sec 200℃ 150℃ Preheat time 90~150 sec Time Limited 60 sec above 210℃ Ramp up max. 3℃ /sec 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 ℃ Ramp down max. 4℃ /sec 183℃ 150℃ 100℃ Preheat time 60~150 sec 60 ~ 120 sec Ramp up max. 3℃ /sec 25℃ Time Note: All temperature refers to assembly application board, measured on the land of assembly application board. DS_IPM24S0A0_06272006 13 MECHANICAL DRAWING SMD PACKAGE SIP PACKAGE 1 2 3 4 5 RECOMMEND PWB PAD LAYOUT RECOMMEND PWB HOLE LAYOUT Note: The copper pad is recommended to connect to the ground. 7 6 1 2 3 4 5 1 2 3 4 5 Note: All dimension are in millimeters (inches) standard dimension tolerance is± 0.10(0.004”) DS_IPM24S0A0_06272006 14 PART NUMBERING SYSTEM IPM 24 S 0A0 S 03 Product Family Input Voltage Number of Outputs Output Voltage Package Output Current Integrated POL 8V~36V S - Single 0A0 - programmable R - SIP 03 - 3A output 1.2~2.5V S - SMD Module F A 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) IPM24S0A0R/S03FA 8V ~ 36V 1.2 ~ 2.5V 3A 85% IPM24S0B0R/S03FA 11V ~ 36V 3.3 ~ 6.5V 3A 91% IPM24S0C0R/S03FA 20V ~ 36V 8 ~ 15V 3A 95% CONTACT: www.delta.com.tw/dcdc USA: Telephone: East Coast: (888) 335 8201 West Coast: (888) 335 8208 Fax: (978) 656 3964 Email: [email protected] Europe: Telephone: +41 31 998 53 11 Fax: +41 31 998 53 53 Email: [email protected] Asia & the rest of world: Telephone: +886 3 4526107 x6220 Fax: +886 3 4513485 Email: [email protected] 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. DS_IPM24S0A0_06272006 15