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Datel 20A manual

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Table of contents for the manual

  • Page 1

    D A TEL, Inc., Mansfield, MA 02048 (USA) · T el: (508)339-3000, (800)233-2765 F ax: (508)339-6356 · Email: sales@datel.com · Inter net: www.datel.com –V IN (1) +V IN (3) OPTO ISOLA TION PWM CONTROLLER REFERENCE & ERROR AMP INPUT UNDER VOL T AGE, INPUT O VER VOL T AGE, AND OUTPUT O VER VOL T AGE COMP ARA T ORS * Can be ordered with positiv[...]

  • Page 2

    USQ Series USQ-1.2/20-D48 1.2 20 25 50 ±0.05% ±0.05% 48 36-75 0.63/0.87 80% C33, P32 USQ-1.5/20-D48 1.5 20 40 65 ±0.05% ±0.05% 48 36-75 0.75/1.03 85% C33, P32 USQ-1.8/20-D48 1.8 20 50 80 ±0.05% ±0.05% 48 36-75 0.88/1.23 85% C33, P32 USQ-2.5/20-D48 2.5 20 60 75 ±0.05% ±0.05% 48 36-75 1.18/1.62 87% C33, P32 USQ-3.3/20-D48 3.3 20 70 85 ±0.05%[...]

  • Page 3

    USQ Models Remote On/Off Control P olarity: Add "P" for positiv e polarity (pin 2 open = conv er ter on) Add "N" for negativ e polarity (pin 2 open = conv er ter off) P erformance/Functional Specifications T ypical @ T A = +25°C under nominal line voltage and full-load conditions , unless noted. (1) Input Input V oltage Range:[...]

  • Page 4

    USQ Series 4 Remov al of Soldered USQ's from PCB's Should remov al of the USQ from its soldered connection be needed, it is very impor tant to thoroughly de-solder the pins using solder wic ks or de-soldering tools. At no time should an y prying or lev erage be used to remov e boards that hav e not been properly de-soldered first. Input [...]

  • Page 5

    USQ Models 5 On/Off Control The primar y-side, Remote On/Off Control function (pin 2) can be specified to operate with either positiv e or negative polarity . P ositive-polarity devices ("P" suffix) are enabled when pin 2 is left open or is pulled high (+2.5-5V applied with respect to –Input, pin 1, I IN < 150µA typical). Positiv [...]

  • Page 6

    USQ Series LOAD R TRIM DOWN +OUTPUT –INPUT +INPUT ON/OFF CONTROL TRIM +SENSE –OUTPUT –SENSE 4 5 1 3 6 8 7 2 LOAD R TRIM UP +OUTPUT –INPUT +INPUT ON/OFF CONTROL TRIM +SENSE –OUTPUT –SENSE 4 5 1 3 6 8 7 2 Figure 5. T rim Connections T o Increase Output V oltages Using Fixed Resistors Figure 6. T rim Connections T o Decrease Output V oltag[...]

  • Page 7

    USQ Models 7 0 1 2 3 4 5 6 7 8 9 10 V OUT INCREASE (%) RESIST ANCE 1 x 10 6 1 x 10 5 1 x 10 4 1 x 10 3 Figure 7. USQ-1.2 T rim-Up Resistance vs. % Increase V OUT 0 1 2 3 4 5 6 7 8 9 10 V OUT INCREASE (%) RESIST ANCE 1 x 10 7 1 x 10 6 1 x 10 5 1 x 10 3 1 x 10 4 Figure 8. USQ-1.5 T rim-Up Resistance vs. % Increase V OUT 0 1 2 3 4 5 6 7 8 9 10 V OUT I[...]

  • Page 8

    USQ Series 0 1 2 3 4 5 6 7 8 9 10 V OUT INCREASE (%) RESIST ANCE 1 x 10 8 1 x 10 7 1 x 10 6 1 x 10 5 Figure 13. USQ-12 T rim-Up Resistance vs. % Increase V OUT 0 1 2 3 4 5 6 7 8 9 10 V OUT INCREASE (%) RESIST ANCE 1 x 10 8 1 x 10 7 1 x 10 6 1 x 10 5 Figure 14. USQ-15 T rim-Up Resistance vs. % Increase V OUT 0 2 4 6 8 10 12 14 16 18 20 V OUT DECREAS[...]

  • Page 9

    USQ Models LOAD +OUTPUT –INPUT Sense Current Contact and PCB resistance losses due to IR drops Contact and PCB resistance losses due to IR drops Sense Retur n +INPUT ON/OFF CONTROL TRIM +SENSE –OUTPUT –SENSE 4 5 1 3 6 8 I OUT Return I OUT 7 2 Remote Sense Note: The Sense and V OUT lines are not inter nally connected to each other . Therefore [...]

  • Page 10

    USQ Series Load Conditions ➀ Performance Specifications 1.2V OUT 1.5V OUT 1.8V OUT 2.5V OUT 3.3V OUT 5V OUT 12 to 24V OUT Load Step = 50 to 75% of I OUT Max.: P eak Deviation, typ . 115mV 110mV 125mV 100mV 170mV 125mV 100mV Settling Time to ±1% of Final V alue, max. ➁ 200µs 200µs 225µs 200µs 100µs 100µs 100µs C OUT = 10µF || 1µF Load[...]

  • Page 11

    USQ Models T ypical P erformance Curves f or 1.2V OUT Models 90 85 80 75 70 65 60 USQ-1.2/20-D48 Efficiency vs. Line V oltage and Load Current 2 4 6 8 10 12 14 16 18 20 Load Current (Amps ) Efficiency ( % ) V IN = 36V V IN = 48V V IN = 75V Start-Up from Remote On/Off Control (V IN = 48V , I OUT = 20A, C OUT = 10µF tantalum || 1µF ceramic.) 2msec/[...]

  • Page 12

    USQ Series T ypical P erformance Curves f or 1.5V OUT Models      ?[...]

  • Page 13

    USQ Models T ypical P erformance Curves f or 1.8V OUT Models                    [...]

  • Page 14

    USQ Series T ypical P erformance Curves f or 2.5V OUT Models Start-Up from V IN (V IN = 48V , I OUT = 20A, C OUT = 10µF tantalum || 1µF ceramic.) 2msec/div 1V/div 20V/div 2.5V OUT (pin 8) +Input (pin 3) Start-Up from Remote On/Off Control (V IN = 48V , I OUT = 20A, C OUT = 10µF tantalum || 1µF ceramic.) 2msec/div 1V/div 2V/div 2.5V OUT (pin 8) [...]

  • Page 15

    USQ Models T ypical P erformance Curves f or 3.3V OUT Models      ?[...]

  • Page 16

    USQ Series T ypical P erformance Curves f or 5V OUT Models Start-Up from V IN (V IN = 48V , I OUT = 20A, C OUT = 10µF tantalum || 1µF ceramic.) 2msec/div 1V/div 20V/div 5V OUT (pin 8) +Input (pin 3)   [...]

  • Page 17

    USQ Models T ypical P erformance Curves f or 5V OUT Models     ?[...]

  • Page 18

    USQ Series T ypical P erformance Curves f or 12V OUT Models Start-Up from V IN (V IN = 48V , I OUT = 8.3A, C OUT = 10µF tantalum || 1µF ceramic.) 2msec/div 5V/div 20V/div 12V OUT (pin 8) +Input (pin 3) 95 90 85 80 75 70 65 60 55 USQ-12/8.3-D48 Efficiency vs. Line V oltage and Load Current 0.83 1.66 2.49 3.32 4.15 4.98 5.81 6.64 7.47 8.3 Load Curr[...]

  • Page 19

    USQ Models Start-Up from Remote On/Off Control (V IN = 48V , I OUT = 8.3A, C OUT = 10µF tantalum || 1µF ceramic.) 2msec/div 5V/div 2V/div 12V OUT (pin 8) Remote On/Off Control (pin 2) USQ-12/8.3-D24: Output Current vs. Ambient T emperature (T ransverse air flow , pin 1 to pin 3; V IN = 24V , 1/2" heat sink.) Output Current (Amps) Ambient Tem[...]

  • Page 20

    USQ Series T ypical P erformance Curves f or 15V OUT Models 20                   ?[...]

  • Page 21

    USQ Models 21 T ypical P erformance Curves f or 24V OUT Models Start-Up from Remote On/Off Control (V IN = 48V , I OUT = 4.2A, C OUT = 10µF tantalum || 1µF ceramic.) 2msec/div 10V/div 2V/div 24V OUT (pin 8) Remote On/Off Control (pin 2) Start-Up from V IN (V IN = 48V , I OUT = 4.2A, C OUT = 10µF tantalum || 1µF ceramic.) 2msec/div 10V/div 20V/d[...]

  • Page 22

    DS-0493D 10/04 BO TT OM VIEW –Input Remote On/Off +Input +Output +Sense Output T rim –Sense –Output Figure 20. Industry Standard Quarter-Brick Pinout Figure 20 readily allows users to confirm that DA TEL quar ter-brick DC/DC conv er ters are compatib le to the industry-standard pinout, independent of pin-numbering conv entions. The typical d[...]