PT3340

PT3340 TI | Alldatasheet

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Features

The PT3340 is a new series of high- input voltage, 30 Watt, isolated DC to DC converters housed in a unique vertical or horizontal 19-pin SIP pack- age. The 18 to 60V input range allows easy integration into many distributed power applications which utilize 24V bus architectures. The PT3340 series is available with output voltages from 3.3V to 15V. The output voltage is adjustable from 90 to 110% of nominal with the addition of an external resistor. Other easy to use features include an inhibit function and a differential remote sense which auto- matically compensates for any voltage drop from the converter to the load. The PT3340 includes built in current limit, short circuit protection and over- temperature shutdown. The PT3340 requires a 330µF output capacitor for proper operation. (For dimensions and PC board layout, see Package Styles 840 and 850.) PT Series Suffix (PT1234X) Case/Pin Configuration Vertical Through-Hole N Horizontal Through-Hole A Horizontal Surface Mount C

Ordering Information

PT3341/GA8 = 3.3V/8A PT3342/GA8 = 5.0V/6A PT3343/GA8 = 12.0V/2.5A PT3344/GA8 = 15.0V/2A Preliminary Specifications Characteristics PT3340 SERIES (Ta = 25°C unless noted) Symbols Conditions Min Typ Max Units Output Current I o Over Vin range V o = 3.3V 0.25 — 8.0 A Vo = 5V 0.25 — 6.0 A Vo = 12V 0.1 — 2.5 A On/Off Standby Current I in standby Vin = 24V, Pin 1 = -Vin —7 1 4m A Short Circuit Current I sc Vin = 24V — I omaxx2 — A Input Voltage Range V in Over Io Range 18.0 24.0 60.0 V Output Voltage Tolerance ∆Vo Over Vin Range TA= -40°C to +85°C — ±1.0 — %V o Line Regulation Reg line Over Vin range @ max Io — ±0.5 — %V o Load Regulation Reg load 10% to 100% of Io max — ±0.5 — %V o Vo Ripple/Noise V n Vin=24V, Io=Io max,Vo>5V — 1.0 — %V o Vin=24V, Io=Io max,Vo<5V — 50 — mV pp Transient Response t tr 50% load change, 1A/µSec — 100 — µSec Vo over/undershoot, Vo>5V — 3.0 — %V o Efficiency η Vin=24V, Io=6A, Vo=3.3V — 80 — % Vin=24V, Io=6A, Vo=5V — 82 — % Vin=24V, Io=2.5A, Vo=12V — 86 — % Switching Frequency ƒ o Over Vin and Io V o<10V 600 750 900 kHz Vo>10V 400 500 600 kHz Recommended Operating T a Vin = 48V @ max Io -40* — +85 °CTemperature Range Airflow = 200 LFM Storage Temperature T s — -40 — +125 °C Mechanical Shock — Per Mil-Std- 883D, method 2002.3, — 500 — G’s1mS, half-sine, mounted to a fixture Mechanical Vibration — Per Mil-Std- 883D, method 2007.2, —1 0—G ’ s20-2000Hz, soldered in a PC board Weight — — — 40 — grams Input/Output Isolation — — 1500 — — VDC Capacitance — — — 1200 — pF Resistance — — 10 — — M Ω Flammability — Materials meet UL 94V-0 Inhibit (pin 2) On** Referenced to -Vin 2.5 — 15 VDC Off 0 — 0.8 VDC * At temperatures below 0°C, the PT3340 series requires output capacitors with temperature stable dielectrics such as tantalum or Oscon. ** If pin 2 is left open, the PT3340 will operate when input power is applied. Pin-Out Information Pin Function

1 Do Not Use

2 Inhibit

3 Do Not Use

18 Vo Adjust

• Note: This product is the subject of one or more patents. Other patents pending. Patent pending* New 30W Isolated SIPs Revised 5/19/99 Application Notes Mechanical Outline Product Selector Guide

For assistance or to order, call (800) 531-5782 Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.powertrends.com Note 1: All data listed in the above graphs has been developed from actual products tested at 25°C. This data is considered typical data for the DC-DC Converter. PT3342, 5.0 VDC (See Note 1) PT3343, 12.0 VDC (See Note 1) Efficiency vs Output Current Efficiency vs Output Current Efficiency vs Output Current Ripple vs Output Current Ripple vs Output Current Ripple vs Output Current Power Dissipation vs Output Current Power Dissipation vs Output Current Power Dissipation vs Output Current PT3341, 3.3 VDC (See Note 1) Efficiency (%)Ripple (mV)PD (Watts) Efficiency (%) Efficiency (%) Ripple (mV) Ripple (mV)PD (Watts) PD (Watts) Iout (A) Iout (A) Iout (A) Iout (A) Iout (A) Iout (A) Iout (A)Iout (A) Iout (A) SeriesPT3340 CHARACTERISTIC DATA Vin Vin Vin Vin Vin Vin Vin Vin Vin 100 02468 18.0V 24.0V 36.0V 48.0V 60.0V 02468 18.0V 24.0V 36.0V 48.0V 60.0V 02468 18.0V 24.0V 36.0V 48.0V 60.0V 100 0123456 18.0V 24.0V 36.0V 48.0V 60.0V 0123456 18.0V 24.0V 36.0V 48.0V 60.0V 0123456 18.0V 24.0V 36.0V 48.0V 60.0V 100 18.0V 24.0V 36.0V 48.0V 60.0V 100 120 18.0V 24.0V 36.0V 48.0V 60.0V 18.0V 24.0V 36.0V 48.0V 60.0V Safe Operating Area (@Vin=24V) Safe Operating Area (@Vin=24V) Safe Operating Area (@Vin=24V) Iout (A) Iout (A) Iout (A) Ambient Temperature (°C) Ambient Temperature (°C) Ambient Temperature (°C) Airflow Airflow Airflow 02468 Nat conv 60LFM 120LFM 200LFM 0123456 Nat conv 60LFM 120LFM 200LFM 0 0.5 1 1.5 2 2.5 Nat conv 60LFM 120LFM 200LFM

For assistance or to order, call (800) 531-5782 3Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.powertrends.com More Application Notes Adjusting the Output Voltage of the PT3320 / PT3340 Series of Isolated DC-DC Converters The factory pre-set output voltage of Power T rends’ PT3320 and PT3340 series DC-DC converters may be adjusted within a nominal ±10% range. This is accomplished with the addition of a single external resistor. For the input voltage range specified in the data sheet, T able 1 gives the allowable adjustment range for each model as V o (min) and Vo (max). Adjust Up: An increase in the output voltage is obtained by adding a resistor, R2 between pin 18 (Vo adjust), and pin 13 (-Remote Sense). See note 4. Adjust Down: Add a resistor (R1), between pin 18 (Vo adjust) and pin 19 (+Remote Sense). Refer to Figure 1 and T able 2 for both the placement and value of the required resistor, (R1) or R2. Notes: 1. Use only a single 1% resistor in either the (R1) or R2 loca- tion. Place the resistor as close to the ISR as possible. 2. Never connect capacitors to V o adjust. Any capacitance added to the Vo adjust control pin will affect the stability of the ISR. Table 1 DC-DC CONVERTER ADJUSTMENT RANGE AND FORMULA PARAMETERS Series Pt # 24V Bus PT3341 PT3342 PT3343 PT3344 48V Bus PT3325 PT3326 PT3321 PT3322 PT3323 PT3324 Figure 1 (R1) Adj Down Adj Up Cin 100 µF 100V (Optional) + Cout 330 µ F L O A D +V in -V in PT3320/3340 184, 5, 6 7, 8, 9 +Vin +Vout -Vin Vo(adj) Inhibit Sns(+) 10 - 12 -Vout 14 - 17 Sns(-) 3. If the remote sense pins are not being used, the resistors (R1) and R2 can be connected to +Vout or -Vout respectively. 4. The adjusted output voltage Va effectively sets the voltage across pins 13 and 19 (±Remote Sense). When using the remote sense pins, V out (measured directly across pins 10–12, and 14–17) can be significantly higher than Va, and may exceed Vo (max). If Va is adjusted upward, the alternative is to increase the minimum input voltage by the same percent- age as V out exceeds Vo(max). The values of (R1) [adjust down], and R2 [adjust up], can also be calculated using the following formulas. (R1) = Ro (Vo – Vr)(Va – Vr) – Rs kΩ Vr (Vo – Va) R2 = Ro (Vo – Vr) – Rs kΩ (Va – Vo) Where V o = Original output voltage Va = Adjusted output voltage Vr = Reference voltage (T able 1) Ro = Multiplier resistance (T able 1) Rs = Series resistance (T able 1)

For assistance or to order, call (800) 531-5782 Application Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.powertrends.com NotesPT3320/3340 Series Table 2 PT3320 / PT3340 ADJUSTMENT RESISTOR VALUES Series Pt # 24V Bus PT3341 PT3342 PT3343 PT3344 48V Bus PT3325 PT3326 PT3321 PT3322 PT3323 PT3324 Current 8Adc 8Adc 8Adc 6adc 2.5Adc 2.0Adc Va(req’d) V a(req’d V a(req’d) 2.45 (726.0)kΩ 5.15 337.0k Ω 3.0 (183.0)kΩ 14.8 3.1 (377.0)kΩ 15.2 607.0k Ω 3.15 (572.0)kΩ 15.4 263.0k Ω 3.2 (961.0)kΩ 15.6 149.0k Ω 3.25 (2130.0)kΩ 15.8 91.3k Ω 3.3 16.0 56.9k Ω 3.35 1230.0k Ω 16.5 11.1k Ω 3.4 539.0k Ω 3.45 309.0k Ω 3.5 194.0k Ω 3.55 126.0k Ω 3.6 79.6k Ω 3.65 46.8k Ω R1 = (Red) R2 = Black

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