DAK-86 Power Integrations, DAK-86 Datasheet
DAK-86
Specifications of DAK-86
Related parts for DAK-86
DAK-86 Summary of contents
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DPA422-426 ® DPA-Switch Family Highly Integrated DC-DC Converter ICs for Power over Ethernet & Telecom Applications Product Highlights Highly Integrated Solution Eliminates external components–saves space, cost • Integrates 220 V high frequency MOSFET, PWM control • Lower ...
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DPA422-426 Functional Block Diagram ....................................................................................................................................... 3 Pin Functional Description ...................................................................................................................................... 3 DPA-Switch Family Functional Description ............................................................................................................ 4 CONTROL (C) Pin Operation .................................................................................................................................... 4 Oscillator and Switching Frequency .......................................................................................................................... 5 Pulse Width Modulator & Maximum Duty Cycle ........................................................................................................ 5 Minimum Duty ...
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V C CONTROL ( SHUNT REGULATOR/ ERROR AMPLIFIER - + 5 (LIMIT) CURRENT LIMIT SOFT START ADJUST ON/OFF EXTERNAL CURRENT LIMIT ( LINE-SENSE ( ...
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DPA422-426 DPA-Switch Family Functional Description DPA-Switch is an integrated switched mode power supply chip that converts a current at the control input to a duty cycle at the open drain output of a high voltage power MOSFET. During normal operation ...
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CONTROL pin current, before the CONTROL pin voltage has had a chance to discharge to the lower threshold voltage of approximately 4.8 V (internal supply undervoltage lockout threshold). When the ...
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DPA422-426 The maximum duty cycle set at a default maximum MAX value of 75% (typical). However, by connecting the LINE-SENSE to the DC input bus through a resistor with appropriate value, the maximum duty cycle can be made ...
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Figures 4, 7). Limiting DC at higher line voltages helps MAX prevent transformer saturation due to large load transients in forward converter applications 33% at the OV MAX threshold was chosen to ensure that the power capability ...
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DPA422-426 In order to be recognized as a synchronization pulse, the LINE-SENSE pin needs to stay low (on-time) for at least 120 ns but no more than 2250 ns for 400 kHz (or 3080 ns for 300 kHz) internal switching ...
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LINE-SENSE (L) Pin Operation When current is fed into the LINE-SENSE pin, it works as a voltage source of approximately 2 maximum current of +240 μA (typical). At +240 μA, this pin turns into a constant ...
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DPA422-426 (Enabled) Output MOSFET Switching (Disabled) I (Default) LIMIT Current Limit -25.5 μ Pin Voltage -250 -200 -150 -100 X Pin Current (μA) Note: These figures provide idealized functional characteristics with typical performance values. Please refer to ...
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Typical Uses of FREQUENCY (F) Pin + DC D Input CONTROL Voltage Figure 9. 400 kHz Frequency Operation. Typical Uses of LINE-SENSE (L) and EXTERNAL CURRENT LIMIT (X) Pins + DC Input Voltage D L CONTROL S ...
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DPA422-426 Typical Uses of LINE-SENSE (L) and EXTERNAL CURRENT LIMIT (X) Pins (cont Input CONTROL Voltage Figure 15. Externally Set Current Limit output or can be replaced by a ...
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Typical Uses of LINE-SENSE (L) and EXTERNAL CURRENT LIMIT (X) Pins (cont.) + 619 kΩ Input CONTROL Voltage Figure 21. Active-on Remote ON/OFF with LINE-SENSE and EXTERNAL CURRENT LIMIT. ...
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DPA422-426 Application Examples μ 2.5 A 36-75 VDC R1 619 kΩ 1% C1, C2 & μF 100 CONTROL CONTROL S X VR1 SMBJ 18.2 kΩ 150 V IN *Optional components ...
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VDC J1 MΩ 619 kΩ 200 V C1 VR1 1 μF D SMAJ 100 V 150A CONTROL J1-2 Figure 26. A Cost Effective ...
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DPA422-426 Ethernet (RJ-45) D101 Connector DL4002 PoE Interface (1,2) VR51 DL4002 28 V D102 R52 20 kΩ D103 DL4002 (4,5) R51 24.9 kΩ DL4002 1% 1/4 W D104 D105 DL4002 (3,6) C51 1 nF D51 50 V DL4002 BAV19 D106 ...
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Forward power tables: Tables 1 (upper half), 3 and 4 Output power fi gures are based on forward topology using • Schottky diode rectifi cation higher output power is possible using synchronous rectifi cation. Dissipation data assumes ...
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DPA422-426 give little or no improvement in effi ciency due to the improvement in conduction losses being negated by larger device switching losses. Figure 50 provides information on switching losses. This together with conduction loss calculations give an estimate of ...
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If an aluminum clad board is used then shielding of switching nodes is recommended. This consists of an area of copper placed directly underneath switching nodes such ...
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DPA422-426 Solder Side Component Side TOP VIEW DPA-Switch In - Maximize hatched copper area for optimum heat sinking Via between board layers V Figure 28. Layout Considerations for DPA-Switch Using R Package. Top Side PCB Bottom Side ...
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Absolute Maximum Ratings DRAIN Voltage .....................................................-0 220 V DRAIN Peak Current: DPA422......................................1.31 A DPA423......................................1.75 A DPA424....................................... 3.5 A DPA425...........................................7 A DPA426....................................... 9.6 A CONTROL Voltage ................................................ -0 CONTROL Current .........................................................100 mA LINE SENSE ...
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DPA422-426 Parameter Symbol Control Functions (cont.) Softstart Time t SOFT PWM Gain DC reg PWM Gain Temperature Drift Dynamic Impedance Z C Dynamic Impedance Temperature Drift CONTROL Pin Internal Filter Pole Shutdown/Auto-Restart CONTROL Pin I Charging Current C(CH)) Charging Current ...
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Parameter Symbol Line-Sense (L) and External Current Limit (X) Inputs (cont.) L Pin Short Circuit I Current L(SC) X Pin Short Circuit I Current X(SC) Line Pin Voltage VL (Positive Current) X Pin Voltage VX (Negative Current) Maximum Duty Cycle ...
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DPA422-426 Parameter Symbol Circuit Protection (cont.) Initial Current Limit I INIT Leading Edge t Blanking Time LEB Current Limit Delay T IL(D) Thermal Shutdown T Temperature J(SD) Thermal Shutdown T Hysteresis J(SD)hyst Power-Up Reset V Threshold Voltage C(RESET) Output ON-State ...
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Parameter Symbol Supply Voltage Characteristics DRAIN Supply Voltage Shunt Regulator V Voltage C(SHUNT) Shunt Regulator Temperature Drift I CD1 CONTROL Supply/ Discharge Current I CD2 NOTES: A. For specifi cations with negative values, a negative temperature coeffi cient corresponds to ...
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DPA422-426 VOLTAGE Figure 30. Duty Cycle Measurement. 120 100 Dynamic 1 = Impedance Slope CONTROL Pin Voltage (V) Figure 31. CONTROL Pin I-V Characteristic 470 Ω 0-15 V NOTE: ...
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BENCH TEST PRECAUTIONS FOR EVALUATION OF ELECTRICAL CHARACTERISTICS The following precautions should be followed when testing DPA-Switch by itself outside of a power supply. The schematic shown in Figure 33 is suggested for laboratory testing of DPA-Switch. When the DRAIN ...
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DPA422-426 Typical Performance Characteristics (cont.) 1.2 1.0 0.8 0.6 0.4 0.2 0 -50 - Junction Temperature (°C) Figure 36. Frequency vs. Temperature. 1.2 1.0 0.8 0.6 0.4 0.2 0 -50 - Junction Temperature (°C) ...
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Typical Performance Characteristics (cont.) 1.6 = 1.375 - ⏐I ⏐x 843 kΩ 1.4 ≤ ≤ -200 μA -25 μ 1.2 1.0 0.8 0.6 0.4 0.2 0 -225 -175 -125 -250 -200 -150 -100 EXTERNAL CURRENT ...
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DPA422-426 Typical Performance Characteristics (cont Scaling Factors: T DPA423 = 0.18 CASE 16 DPA424 = 0.36 DPA425 = 0.72 DPA426 = 1. Drain Voltage (V) Figure ...
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DIM inches mm A 0.367-0.387 9.32-9.83 B 0.240-0.260 6.10-6.60 C 0.125-0.145 3.18-3.68 G 0.015-0.040 0.38-1.02 H 0.120-0.140 3.05-3.56 J1 0.057-0.068 1.45-1.73 J2 0.014-0.022 0.36-0.56 K 0.008-0.015 0.20-0.38 L 0.100 BSC 2.54 BSC M 0.030 (MIN) 0.76 (MIN) N 0.300-0.320 7.62-8.13 ...
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DPA422-426 .390 (9.91) .420 (10.67) .055 (1.40) .066 (1.68) .326 (8.28) .336 (8.53) .208 (5.28) Ref .024 (0.61) .034 (0.86) .315 (8.00) .380 (9.65) .638 (16.21) .050 (1.27) .038 (0.97) 32 Rev. S 12/07 TO-263-7C .245 (6.22) MIN ...
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Notes DPA422-426 33 Rev. S 12/07 ...
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DPA422-426 34 Rev. S 12/07 Notes www.powerint.com ...
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Revision Notes F Final release data sheet. G Updated Figure 25 and text description. H Corrected missing text on page 9 and corrected Table 4. Updated R package description. Revised thermal impedances (q Updated Figure 25 and description in text. ...
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... The products and applications illustrated herein (including transformer construction and circuits external to the products) may be covered by one or more U.S. and foreign patents, or potentially by pending U.S. and foreign patent applications assigned to Power Integrations. A complete list of Power Integrations patents may be found at www.powerint.com. Power Integrations grants its customers a license under certain patent rights as set forth at http://www ...