DAC2800D MSK | Alldatasheet

Document overview

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Technical content

  • WAVE SOLDERABLE PACKAGE
  • ALL CERAMIC CAPACITORS
  • SURFACE MOUNT MAGNETICS FEATURES — DUAL OUTPUT
  • REPLACES APEX DHC2812D & DHC2815D
  • BOTH OUTPUTS FULLY REGULATED
  • NO DERATING — –55°C TO +125°C
  • HIGH ISOLATION — 500V
  • TRACKING OUPUT V ADJUSTMENT — STANDARD
  • REMOTE SHUTDOWN
  • 11 TO 50V INPUT WITH 5 WATT OUTPUT
  • AVAILABLE WITH ±12V OR ±15V OUTPUTS

DESCRIPTION

The DAC2800D series of DC-DC converters provides the ruggedness reliability and features required to meet the ad- vanced design challenges of today's hi-rel market. This has been accomplished while retaining a power density of 15 W/ in3 and 375 mW/gram of power/package performance. The use of advanced substrate and reflow soldering techniques during construction results in a rugged, cost-effective, and completely solderable package. The DAC2800D hybrid converter series utilizes all ceramic capacitors, surface mount magnetics, and ultrasonically bonded wires to provide reliable operation at all operating temperatures while surviving G forces of up to 500 G. The DAC2800D series has two fully regulated tracking outputs. Standard features include output fault monitoring and/or turn on voltage point programming via the shutdown pin. All three functions may be implemented simultaneously with a minimum of external components. An output voltage adjustment / load compensation pin which adjusts both out- puts simultaneously is also standard. Fault tolerant design protects these converters from most external circuit faults. The +output and output adjust pins will withstand +25 V while the shutdown pin will withstand +50 V, protecting the converters from a variety of system or board faults e.g. solder bridges etc. Unique load fault protection circuitry allows this converter to pull up loads having difficult static load line characteristics and allows short term load excursions significantly beyond ratings in most applications. A transformer isolated flyback converter topology operating at a switching frequency of 400 kHz allows operation over a wide input voltage range. Internal filtering of outputs elimi- nates the need for external capacitors in many applications. The 8-pin DIP package is hermetically sealed and isolated from the internal circuits. Heat sinking is recommended for full power operation at elevated ambient temperatures. TYPICAL APPLICATION BLOCK DIAGRAM EXTERNAL CONNECTIONS P W M FEED FORWARD CONTROLLER ERROR AMPLIFIER REFERENCE AND ISOLATION PASS 4707 Dey Road Liverpool, N.Y. 13088 M.S.KENNEDY CORP. (315) 701-6751 DAC2800D SERIES ISO-9001 CERTIFIED BY DSCC DUAL DC-DC CONVERTERS Rev. B 12/03 +OUTPUT OUTPUT COMMON -OUTPUT ADJUST/COMP SHUTDOWN PLUS CASE -INPUT +INPUT

DAC2812D • DAC2815D SPECIFICATIONS PARAMETER TEST CONDITIONS1 MIN TYP MAX MIN TYP MAX UNITS STEADY STATE CHARACTERISTICS INPUT VOLTAGE RANGE –55°C ↔ 125°C Vdc OUTPUT VOLTAGE (+/–) +Io = –Io = 10% 11.9 12.1 14.9 15.1 Vdc OUTPUT CURRENT –55°C × 125°C VIN = 16 ↔ 40 ±225 3604 ±180 2884 mAdc VIN = 11 ↔ 50 ±208 3334 ±167 2674 mAdc OUTPUT POWER –55°C × 125°C VIN = 16 ↔ 40 5.4 5.4 W VIN = 11 ↔ 50 W EFFICIENCY +Io = –Io= 100% LINE REGULATION mV LOAD REGULATION + (+Io= 0 – 160%) –Io = 40%2 mV – (-Io= 0 – 160%) +Io = 40%2 mV OPERATING TEMPERATURE, CASE –55 125 –55 125 TEMPERATURE COEFFICIENT (Vout +/–) 0.006 0.006 %/°C INPUT RIPPLE CURRENT Bandwidth = 10kHz → 1MHz 340 340 mArms WITH 1µH SERIES INDUCTANCE Bandwidth = 10kHz → 1MHz mArms OUTPUT RIPPLE VOLTAGE Bandwidth = 10kHz → 1MHz mVrms LOAD CAPACITANCE3 (PER OUTPUT VIN = 16 ↔ 40 100 100 µF OVER –55°C × 125°C) VIN = 11 ↔ 50 µF SHORT CIRCUIT DISSIPATION 0.5 0.5 W QUIESCENT INPUT CURRENT mA INHIBITED 0.9 1.25 2.5 0.09 1.25 2.5 mA ISOLATION CHARACTERISTICS (INPUT/OUTPUT/CASE) LEAKAGE RESISTANCE

500 Vdc

MΩ LEAKAGE CAPACITANCE 10kHz 400 500 400 500 pF DYNAMIC CHARACTERISTICS LINE STEP RESPONSE VIN = 16 ↔ 40 Vdc VOLTAGE CHANGE 200 200 mV RECOVERY TIME (99%) 250 250 µS WITH 50 µF OUTPUT CAPACITORS3 VOLTAGE CHANGE 150 150 mV RECOVERY TIME (99%) 400 400 µS LOAD STEP RESPONSE VOLTAGE CHANGE 400 400 mV RECOVERY TIME (99%) 200 200 µS WITH 50 µF OUTPUT CAPACITORS3 VOLTAGE CHANGE 300 300 mV RECOVERY TIME (99%) 300 300 µS START-UP OVERSHOOT VIN = 0 → 28 Vdc mV SHUTDOWN DELAY Pin 5 = >10 ↔ <8 Vdc 250 500 250 500 µS SHUTDOWN RECOVERY Pin 5 = > 8 ↔ <10Vdc mS DAC2812D DAC2815D ABSOLUTE MAXIMUM RATINGS DAC2812D DAC2815D INPUT VOLTAGE RANGE (Pin 7 to 6 or 5) 50Vdc 50Vdc INPUT TRANSIENT (Pin 7 to 6) 80V @ 50ms 80V @ 50ms OUTPUT CURRENT (Continuous) 360mA4 288mA4 TEMPERATURE, Storage –65°C, 150°C –65°C, 150°C TEMPERATURE, Pin Soldering 10s 300°C 300°C Rev. B 12/03

DAC2812D • DAC2815D NOTES: Unless otherwise stated TC = 25°, VIN = 28V, –Io= +Io= 100%, Regulation measured on output pins 1/16" from case. Io= 100% means 2.5 or 2.7 watts. Capacitors should be connected from + to common and – to common only. Capacitance value imbalance should not be more than 4:1. Up to 80% of total load may be drawn from either output. PACKAGE & THERMAL SPECIFICATIONS MIN TYP MAX UNITS WEIGHT GRAMS TEMPERATURE RISE, junction to case TEMPERATURE RISE, ambient °C/W Rev. B 12/03

OUTPUT CURRENT, POUT (W) LOW LINE DROP OUT INPUT VOLTAGE, VIN (V) 10K 90K 60K 20K 30K 40K INPUT VOLTAGE, VIN (V) LINE TRANSIENT RESPONSE EFFICIENCY CONTOURS OUTPUT POWER, POUT (W) SET POINT RESISTOR, RSP (Ω) TIME, t (10msec/DIV) TURN ON THRESHOLD TURN ON VOLTAGE, ETO (V) TURN ON RESPONSE FREQUENCY, f (Hz) –100 AUDIO REJECTION AUDIO REJECTION, AV (dB) –20 –40 10K 100K –60 –80 RESPONSE, X (UNITS/DIV) +12V –12V +VOUT VIN TEMP = 25°C 40% 50% 55% 60% 63% 66% 65% INPUT VOLTAGE, VIN (V) EFFICIENCY CONTOURS OUTPUT CURRENT, POUT (W) TEMP = 125°C 40% 50% 55% 58% 60% 62% 63% INPUT VOLTAGE, VIN (V) EFFICIENCY CONTOURS OUTPUT POWER, POUT (W) TEMP = –55°C 40% 50% 55% 67% 59% 62% 65% TIME, t (100µsec/DIV) TIME, t (100µsec/DIV) – LOAD TRANSIENT RESPONSE OUTPUT RESPONSE, X (UNITS/DIV) OUTPUT RESPONSE, X (UNITS/DIV) OUTPUT LOAD = 225mA OUTPUT LOAD = 225mA NO OUTPUT BUS CAPACITANCE NO OUTPUT CAPACITANCE INCLUDES 50µF ON EACH OUTPUT TIME, t (100µsec/DIV) + LOAD TRANSIENT RESPONSE OUTPUT RESPONSE, X (UNITS/DIV) 360mA 360mA +LOAD –LOAD +VOUT +VOUT +VOUT VIN 16V –VOUT 90mA 90mA 1 V 2 A 100mA 500mV 500mV 20V 10 V 2 V NO OUTPUT BUS CAPCITANCE VIN = 28V IOUT = 225 mA OUTPUT DC CURRENT RATING –VOUT –LOAD = 90mA –VOUT +LOAD = 90mA 40V +VOUT 28V Rev. B 12/03

OUTPUT POWER, POUT (W) LOW LINE DROP OUT INPUT VOLTAGE, VIN (V) 10K 90K 70K 20K 30K 40K50K INPUT VOLTAGE, VIN (V) LINE TRANSIENT RESPONSE EFFICIENCY CONTOURS OUTPUT CURRENT, POUT (W) SET POINT RESISTOR, RSP (Ω) TIME, t (10msec/DIV) TURN ON THRESHOLD TURN ON VOLTAGE, ETO (V) TURN ON RESPONSE FREQUENCY, f (Hz) –100 AUDIO REJECTION AUDIO REJECTION, AV (dB) –20 –40 10K 100K –60 –80 RESPONSE, X (UNITS/DIV) +15V –15V 28V +VOUT –VOUT VIN TEMP = 25°C 40% 55% 62% 50% 63% 65% 66% INPUT VOLTAGE, VIN (V) EFFICIENCY CONTOURS OUTPUT CURRENT, POUT (W) TEMP = 125°C 40% 50% 62% 52% 56% 59% 61% INPUT VOLTAGE, VIN (V) EFFICIENCY CONTOURS OUTPUT CURRENT, IOUT (A) 3.2 1.6 2.4 TEMP = –55°C 40% 50% 55% 60% 64% 71% 66% 68% 70% 69% TIME, t (100µsec/DIV) TIME, t (100µsec/DIV) – LOAD TRANSIENT RESPONSE OUTPUT RESPONSE, X (UNITS/DIV) OUTPUT RESPONSE, X (UNITS/DIV) NO OUTPUT BUS CAPACITANCE NO OUTPUT CAPACITANCE INCLUDES 50µF ON EACHOUTPUT TIME, t (100µsec/DIV) LOAD TRANSIENT RESPONSE OUTPUT RESPONSE, X (UNITS/DIV) 288mA –LOAD = 72mA 288mA 72mA 72mA –VOUT –VOUT +VOUT –VOUT +VOUT VIN OUTPUT LOAD = 182mA +LOAD – LOAD 1 V 1 A 1 V 1 A 500mV 500mV 20V 10 V 2 V NO OUTPUT BUS CAPCITANCE VIN = 28V IOUT = 182mA OUTPUT DC CURRENT RATING –VOUT OUTPUT LOAD =182mA + LOAD = 72mA Rev. B 12/03

DAC2812D • DAC2815D APPLICATION INFORMATION OUTPUT ADJUST / COMP The output voltage of the DAC2800D may be adjusted from 90% to 110% of nominal value by the use of a 150K( potenti- ometer as shown. Adjustment beyond this range is possible, however certain characteristics of the converter such as but not limited to input voltage range, efficiency, ripple and tem- perature performance will change. Characterization by the user is recommended in such applications. Adjust/comp (pin 4) may be driven by external circuitry referenced to pin 2 (-output) if desired. Grounding pin 4 causes voltage to increase (25% typically) while driving pin 4 above 1.3 V causes output voltage to decrease. Pin 4 may be driven negative without damage, however the resultant increase in converter output voltage should be considered. Pin 4 may be driven through 10K( or more if connection of the comp function is also required. The comp function of pin 4 allows load transient response to be tailored to suit specific application requirements. This feature may be utilized by connecting a 10nF or less capacitor between pins 4 and 1. SHUTDOWN PLUS Pin 5 is used for remote shutdown, output fault detection, and/or setting the input voltage point at which the converter will turn on as shown in the typical application diagram. No connection to pin 5 is necessary for normal operation of the converter. Pin 5 is referenced to pin 7 (-input). Shutdown may be implemented by simply connecting pin 5 to an open collector logic output or switch rated at 2.5 mA, 25 Vdc or higher. Input voltage turn on point is programmed with a single resistor from pin 5 to 7. An input turn on/off hysteresis (typically 3.5% of Vin) will be observed. This should be considered when making or verifying set point adjustment. The value of the setpoint resistor may be determined by the following: R = 210 * 10 3 ETO – 9.5 (+/– 10% accuracy at 25 OC) Set point temperature coefficient is typically + 400ppm/ OC Output fault monitoring is accomplished by observing pin 5 with a high impedance monitoring circuit. Pin 5 voltage drops from over 10 V to below 1 V when a load fault causes the converter's fault protection circuitry to activate. It will remain 150K 10nF low for at least 100 mS and return high. If the load fault is still present pin 5 will return low and the cycle will repeat. A resistor > 400K( from pin 5 to 7 provides pull down for pin 5 if there is no input setpoint programming resistor already in place. LOAD FAULT RESPONSE The DAC2800D series of DC-DC converters share load fault philosophies. Load fault conditions include short-circuit and severe overload conditions. The DAC2800D converter series responds to load faults by turning off all power conver- sion circuits for 250 mS and then attempting to restart for 10 mS (typical). The net "on" duty factor during a fault is very low resulting in low converter dissipation and immunity from overheating at 125°C. Current beyond rated can flow into the load at startup time. This allows the converter to bring up capacitive and other difficult load types more reliably than competing converters. Vo NORMAL TIME NORMAL LOAD FAULT O Io O Rev. B 12/03

The information contained herein is believed to be accurate at the time of printing. MSK reserves the right to make changes to its products or specifications without notice, however, and assumes no liability for the use of its products. Please visit our website for the most recent revision of this datasheet. M.S. Kennedy Corp.

4707 Dey Road, Liverpool, New York 13088

Phone (315) 701-6751 FAX (315) 701-6752 www.mskennedy.com NOTE: ALL DIMENSIONS ARE ±0.010 INCHES UNLESS OTHERWISE LABELED. ESD Triangle indicates Pin 1. DAC2812D The above example is an industrial grade ±12V dual output converter

ORDERING INFORMATION

BLANK= INDUSTRIAL; E= EXTENDED RELIABILITY; H= CLASS H DUAL OUTPUT OUTPUT VOLTAGE 12=±12V; 15=±15V NOMINAL INPUT VOLTAGE GENERAL PART NUMBER Rev. B 12/03 MECHANICAL SPECIFICATIONS