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FEATURES
High efficiency: 94% @ 5.0Vin, 3.3V/6A out
Small size and low profile: (SIP)
25.4 x 12.7 x 6.7mm (1.00”x 0.50”x 0.26”)
Single-In-Line (SIP) packaging
Standard footprint
Voltage and resistor-based trim
Pre-bias startup
Output voltage tracking
No minimum load required
Output voltage programmable from
0.75Vdc to 3.3Vdc via external resistor
Fixed frequency operation
Input UVLO, output OTP, OCP
Remote on/off
ISO 9001, TL 9000, ISO 14001, QS9000,
OHSAS
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TECHNICAL SPECIFICATIONS (T = 25°C, airflow rate = 300 LFM, V = 2.8Vdc and 5.5Vdc, nominal Vout unless otherwise noted.) A in PARAMETER NOTES and CONDITIONS DNS04S0A0R06PFD Min. Typ. Max. Units ABSOLUTE MAXIMUM RATINGS Input Voltage (Continuous) 0 5.8 Vdc Tracking Voltage Vin,max Vdc Operating Temperature Refer to Figure 44 for measuring point -40 125 °C Storage Temperature -55 125 °C INPUT CHARACTERISTICS Operating Input Voltage Vout ≦ Vin –0.5 2.8 5.5 V Inp
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ELECTRICAL CHARACTERISTICS CURVES 98 98 96 97 96 94 95 92 94 90 93 88 3V 4.5V 92 5V 5V 86 91 5.5V 5.5V 84 90 123 456 123456 LOAD (A) LOAD (A) Figure 1: Converter efficiency vs. output current (3.3V out) Figure 2: Converter efficiency vs. output current (2.5V out) 98 96 96 94 94 92 92 90 90 88 2.8V 88 86 2.8V 5V 86 5V 5.5V 84 5.5V 84 82 123456 12 34 56 LOAD (A) LOAD (A) Figure 3: Converter efficiency vs. output current (1.8V out) Figure 4: Converter efficiency vs. output current
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ELECTRICAL CHARACTERISTICS CURVES (CON.) Figure 7: Output ripple & noise at 3.3Vin, 2.5V/6A out Figure 8: Output ripple & noise at 3.3Vin, 1.8V/6A out Figure 9: Output ripple & noise at 5Vin, 3.3V/6A out Figure 10: Output ripple & noise at 5Vin, 1.8V/6A out Figure 11: Turn on delay time at 3.3Vin, 2.5V/6A out Figure 12: Turn on delay time at 3.3Vin, 1.8V/6A out DS_DNS04SIP06A_07172008 4
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ELECTRICAL CHARACTERISTICS CURVES (CON.) Figure 13: Turn on delay time at 5Vin, 3.3V/6A out Figure 14: Turn on delay time at 5Vin, 1.8V/6A out Figure 15: Turn on delay time at remote turn on 5Vin, 3.3V/16A Figure 16: Turn on delay time at remote turn on 3.3Vin, 2.5V/16A out out Figure 17: Turn on delay time at remote turn on with external Figure 18: Turn on delay time at remote turn on with external capacitors (Co= 5000 µF) 5Vin, 3.3V/16A out capacitors (Co= 5000 µF) 3.3Vin,
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ELECTRICAL CHARACTERISTICS CURVES Figure 19: Typical transient response to step load change at Figure 20: Typical transient response to step load change at 2.5A/ μS from 100% to 50% of Io, max at 5Vin, 3.3Vout 2.5A/ μS from 50% to 100% of Io, max at 5Vin, 3.3Vout (Cout = 1uF ceramic, 10 μF tantalum) (Cout =1uF ceramic, 10 μF tantalum) Figure 21: Typical transient response to step load change at Figure 22: Typical transient response to step load change at 2.5A/ μS from 100% to 50%
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ELECTRICAL CHARACTERISTICS CURVES (CON.) Figure 23: Typical transient response to step load change at Figure 24: Typical transient response to step load change at 2.5A/ μS from 100% to 50% of Io, max at 3.3Vin, 2.5A/ μS from 50% to 100% of Io, max at 3.3Vin, 2.5Vout (Cout =1uF ceramic, 10 μF tantalum) 2.5Vout (Cout =1uF ceramic, 10 μF tantalum) Figure 25: Typical transient response to step load change at Figure 26: Typical transient response to step load change at 2.5A/ μS f
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DESIGN CONSIDERATIONS TEST CONFIGURATIONS Input Source Impedance TO OSCILLOSCOPE L To maintain low noise and ripple at the input voltage, it is VI(+) critical to use low ESR capacitors at the input to the module. Figure 32 shows the input ripple voltage (mVp-p) for various output models using 2x100 µF low ESR 100uF 2 BATTERY tantalum capacitor (KEMET p/n: T491D107M016AS, Tantalum AVX p/n: TAJD107M106R, or equivalent) in parallel with 47 µF ceramic capacitor (TDK p/n:C5750X7R1
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FEATURES DESCRIPTIONS DESIGN CONSIDERATIONS (CON.) Remote On/Off The power module should be connected to a low ac-impedance input source. Highly inductive source The DNS series power modules have an On/Off pin for impedances can affect the stability of the module. An input remote On/Off operation. Both positive and negative capacitance must be placed close to the modules input On/Off logic options are available in the DNS series pins to filter ripple current and ensure module s
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( ) Vtrim = 0.7 − 0.1698 × Vo − 0.7525 FEATURES DESCRIPTIONS (CON.) For example, to program the output voltage of a DNS Over-Temperature Protection module to 3.3 Vdc, Vtrim is calculated as follows The over-temperature protection consists of circuitry that Vtrim = 0.7 − 0.1698 × (3.3 − 0.7525 ) = 0.267V provides protection from thermal damage. If the temperature exceeds the over-temperature threshold the Vo module will shut down. The module will try to restart after shutdown.
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FEATURE DESCRIPTIONS (CON.) The output voltage tracking feature (Figure 40 to Figure The amount of power delivered by the module is the 42) is achieved according to the different external voltage at the output terminals multiplied by the output connections. If the tracking feature is not used, the current. When using the trim feature, the output voltage TRACK pin of the module can be left unconnected or of the module can be increas
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FEATURE DESCRIPTIONS (CON.) Ratio-Metric Sequential Start-up Ratio–metric (Figure 42) is implemented by placing the Sequential start-up (Figure 40) is implemented by placing voltage divider on the TRACK pin that comprises R1 and R2, to create a proportional voltage with Vo to the Track an On/Off control circuit between Vo and the On/Off pin PS1 PS1 pin of PS2. of PS2. For Ratio-Metric applications that need the outputs of PS1 and PS2 reach the regulation set p
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THERMAL CURVES 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 characte
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DNS04S0A0R06(Standard) Output Current vs. Ambient Temperature and Air Velocity DNS04S0A0R06(Standard) Output Current vs. Ambient Temperature and Air Velocity Output Current(A) Output Current(A) @ Vin = 5.0V, Vo = 0.75V (Either Orientation) @ Vin = 3.3V, Vo = 1.5V (Either Orientation) 7 7 6 6 5 5 4 4 Natural Natural Convection Convection 3 3 2 2 1 1 0 0 60 65 70 75 80 85 60 65 70 75 80 85 Ambient Temperature ( ℃) Ambient Temperature ( ℃) Figure 47: DNS04S0A0R06 (Standard) Output current vs. Fig
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MECHANICAL DRAWING SMD PACKAGE (OPTIONAL) SIP PACKAGE DS_DNS04SIP06A_07172008 15
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PART NUMBERING SYSTEM DNS 04 S 0A0 R 06 P F D On/Off Product Numbers of Output Package Output Input Voltage Option Code logic Series Outputs Voltage Type Current DNS - 6A 04 - 2.8~5.5V S - Single 0A0 - R - SIP 06 - 6A N- negative D - Standard Function F- RoHS 6/6 Programmable DNM - 10A 10 –8.3~14V S - SMD 10 - 10A P- positive (Lead Free) DNL - 16A 16 - 16A MODEL LIST Efficiency Model Name Packaging Input Voltage Output Voltage Output Current 5.0Vin, 3.3Vdc @ 6A DNS04S0A0S06NFD
