PT4580 Series 30-W 24/48-V Input Isolated DC/DC Converter SLTS119A (Revised 3/14/2002) Features • Input Voltage Range: 18V to 60V • 1500 VDC Isolation • On/Off Control • Vo Adjust • Differential Remote Sense • Current Limit • Short-Circuit Protection • Over-Temperature Shutdown Description Ordering Information The PT4580 series is a single-output isolated DC/DC converter, housed in a 19-pin space-saving package. These modules are UL, CSA, and VDE approved for telecom applications, and rated at 30W or 8A. The 18V to 60V input range allows easy integration into many distributed power applications which utilize 24V bus architectures. Standard output voltages range from 1.8V to 15V, and are each adjustable by up to ±10%. Operating features include a Remote On/Off control, an under-voltage lockout (UVLO), and a differential remote sense. Protection features include an output current limit, short-circuit protection, and over-temperature shutdown. A 330µF output capacitor is required for proper operation. PT4581H PT4582H PT4583H PT4584H PT4585H • • • • • • • • • Undervoltage Lockout Space-Saving Package Solderable Copper Case UL1950 Recognized CSA 22.2 950 Certified EN60950 Approved VDE Licensed 5 x106 Hrs MTBF Meets FCC Class A Radiated Limits Pin-Out Information = 3.3V/8A (26.4W) = 5.0V/6A = 12.0V/2.5A = 15.0V/2A = 1.8V/8A (14.4W) Pin Function 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 PT Series Suffix (PT1234 x ) Case/Pin Configuration Order Suffix N A C Vertical Horizontal SMD Package Code * (END) (ENA) (ENC) * Previously known as package styles 1400 & 1410. (Reference the applicable package code drawing for the dimensions and PC board layout) Do Not Use Remote On/Off † Do Not Use -Vin -Vin -Vin +Vin +Vin +Vin -Vo -Vo -Vo -Remote Sense +Vo +Vo +Vo +Vo Vo Adjust † +Remote Sense † For more information, see application notes. Standard Application V O Adjust +REMOTE SENSE 18 + V IN 7, 8, 9 Inhibit –V IN PT4580 2 + C IN 19 4-6 13 +VO 14-17 L O A D 10-12 + C OUT Q1 R1 –V O C1 –REMOTE SENSE Cin Cout Q1 R1/C1 For technical support and more information, see inside back cover or visit www.ti.com = Optional 100µF/100V electrolytic = Required 330µF electrolytic (See Notes) = N-Channel MOSFET = Optional (see application notes) PT4580 Series 30-W 24/48-V Input Isolated DC/DC Converter Specifications (Unless otherwise stated, T a =25°C, V in =24V, Cout =330µF, and Io =Iomax) Characteristic Symbol Output Current Io Conditions Over Vin range Input Voltage Range Set Point Voltage Tolerance Vin Vo tol Over Io Range Temperature Variation Line Regulation Regtemp Regline –40° ≤Ta ≤ +85°C Over Vin range Load Regulation Regload Over Io range Total Output Voltage Variation ∆Votot Includes set-point, line, load, –40° ≤Ta ≤ +85°C Efficiency η Vo = 15V Vo = 12V Vo =5.0V Vo ≤ 3.3V Vo ≥5.0V Vo ≤3.3V Vo ≥5.0V Vo ≤3.3V Vo ≥5.0V Vo ≤3.3V Vo ≥5.0V Vo ≤3.3V Vo = 15V Vo = 12V Vo =5.0V Vo =3.3V Vo =1.8V Vo ≥ 5.0V Vo ≤ 3.3V Vo Ripple (pk-pk) Vr 20MHz bandwidth Transient Response ttr 0.1A/µs load step, 50% to 100% Iomax Vo over/undershoot Vo ≥ 5.0V Vo ≤ 3.3V ∆Vtr Short Circuit Current Switching Frequency Isc ƒs Under-Voltage Lockout UVLO Remote On/Off Input (pin 2) Input High Voltage Input Low Voltage Input Low Current VIH VIL IIL Standby Input Current Internal Input Capacitance External Output Capacitance Iin standby Cin Cout Isolation Voltage Capacitance Resistance Operating Temperature Range Maximum Case Temperature Storage Temperature Range Reliability Ta Tc Ts MTBF Mechanical Shock — Mechanical Vibration — Weight Flammability — — Over Vin range Vo ≥10V Vo <10V Vin increasing Vin decreasing Referenced to –Vin (pins 4–6) pins 2 & 4 connected Between +Vo and –Vo Input-output/input-case Input-output Input-output Over Vin range — Per Bellcore TR-332 50% stress, Ta =40°C, ground benign Per Mil-Std-883D, method 2002.3, 1mS, half-sine, mounted to a fixture Per Mil-Std-883D, method 2007.2, 20-2000Hz, soldered to board — Materials meet UL 94V-0 PT4580 SERIES Typ Max Min Vo ≥ 9.0V Vo ≤ 5.0V 0.1 0.1 0.25 0.25 18.0 — — — — — — — — — — — — — — — — — — — — 450 700 — — Units — — — — 24.0 ±1 ±33 ±0.5 ±0.2 ±7 ±0.4 ±13 ±2 ±67 85 86 83 80 70 1.0 50 100 ±3.0 ±100 2xIomax 500 750 17 16 2.0 2.5 6.0 8.0 60.0 ±1.5 ±50 — ±1.0 ±33 ±1.0 ±33 — — — — — — — 2.0 75 200 ±5.0 ±150 — 550 800 — — 2.5 –0.2 –3 — — 260 260 1500 — 10 -40 (4) — -40 — — –6 8 0.66 330 330 — 1200 — — — — 15 (2) +0.8 –10 16 — 600 (3) 1,000 (3) — — — +85 (5) 100 +125 Vdc pF MΩ °C °C °C 5.0 — — 106 Hrs — 500 — G’s — 20 — G’s — 40 — grams (1) (1) (1) (1) A V %Vo mV %Vo %Vo mV %Vo mV %Vo mV % %Vo mVpp µs %Vo mV A kHz V V µA mA µF µF Notes: (1) The DC/DC converter will operate at no load with reduced specifications. (2) The Remote On/Off input has an internal pull-up. If it is left open circuit the converter will operate when input power is applied. A low-leakage (<100nA) MOSFET is recommended to control this input. The open-circuit voltage is less than 10V. See application notes for interface considerations. (3) Output capacitor values are absolute. Allowances must be made for any additional de-coupling capacitors and the total external capacitor tolerance. The value of external capacitance is limited due to regulator startup current requirements. Consult the factory for further details. (4) For operation below 0°C, the required external output capacitor must have temperature stable characteristics. E.g. Tantalum or Oscon® types. (5) See Safe Operating Area curves or contact the factory for the appropriate thermal derating. For technical support and more information, see inside back cover or visit www.ti.com PT4580 Series 30-W 24/48-V Input Isolated DC/DC Converter PT4581, 3.3 VDC PT4582, 5.0 VDC (See Note A) Efficiency vs Output Current Efficiency vs Output Current 100 100 70 60 90 Vin 80 18.0V 24.0V 36.0V 48.0V 60.0V 70 60 Efficiency - % 18.0V 24.0V 36.0V 48.0V 60.0V Efficiency (%) 90 Vin 80 (See Note A) Efficiency vs Output Current 100 90 Efficiency (%) PT4583, 12.0 VDC (See Note A) VIN 18.0V 24.0V 36.0V 48.0V 60.0V 80 70 60 50 50 50 40 40 0 40 2 4 6 8 0 1 2 Iout (A) 4 5 0.5 1 6 1.5 2 2.5 Iout (A) Iout (A) Ripple vs Output Current Ripple vs Output Current 60 70 50 60 Vin 40 18.0V 24.0V 36.0V 48.0V 60.0V 30 20 Ripple vs Output Current 120 100 50 Ripple (mV) Ripple (mV) 3 Vin 18.0V 24.0V 36.0V 48.0V 60.0V 40 30 VIN 60.0V 48.0V 36.0V 24.0V 18.0V 80 Ripple - mV 0 60 40 20 20 10 10 0 0 0 0 2 4 6 8 0 0 1 2 Iout (A) 3 4 5 1 1.5 2 2.5 Iout (A) Iout (A) Power Dissipation vs Output Current Power Dissipation vs Output Current 10 Power Dissipation vs Output Current 8 8 8 18.0V 24.0V 36.0V 48.0V 60.0V 4 Pd - Watts 4 Vin PD (Watts) 18.0V 24.0V 36.0V 48.0V 60.0V 6 60.0V 48.0V 36.0V 24.0V 18.0V 4 2 2 2 VIN 6 6 Vin PD (Watts) 0.5 6 0 0 0 0 2 4 6 8 0 0 1 2 Iout (A) 4 5 0.5 1 6 1.5 2 2.5 Iout (A) Iout (A) Safe Operating Area (Vin =24V) Safe Operating Area (Vin =24V) Safe Operating Area (Vin =24V) 90 70 Airflow 60 200LFM 120LFM 60LFM 50 Nat conv 40 30 20 90 80 70 Airflow 60 200LFM 120LFM 60LFM 50 Nat conv 40 30 Ambient Temperature (°C) 80 Ambient Temperature (°C) 90 Ambient Temperature (°C) 3 80 Airflow 70 200LFM 120LFM 60LFM Nat conv 60 50 40 30 20 0 1 2 3 4 Iout (A) 5 6 7 8 0 1 2 3 4 5 Iout (A) 6 20 0 0.5 1 1.5 Iout (A) Note A: 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. Note B: SOA Curves represent operating conditions at which internal components are at or below manufacturer’s maximum rated operating temperatures. For technical support and more information, see inside back cover or visit www.ti.com 2 2.5 Application Notes PT3320/3340/4560/4580 Series Adjusting the Output Voltage of Power Trends’ 30W Isolated DC/DC Converter Series The factory pre-set output voltage of Power Trends’ 30W series of isolated 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, Table 1 gives the allowable adjustment range for each model as Vo (min) and Vo (max). Adjust Up: An increase in the output voltage is obtained by adding a resistor, R2 between Vo adjust (pin 18), and -Remote Sense (pin 13). See note 4. 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, Vout (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 of Vo(max), the the minimum input voltage is increased by the same percentage as Vout exceeds Vo(max). The values of (R1) [adjust down], and R2 [adjust up], can also be calculated using the following formulas. Adjust Down: Add a resistor (R1), between Vo adjust (pin 18), and +Remote Sense (pin 19). Refer to Figure 1 and Tables 2 & 3 for both the placement and value of the required resistor, (R1) or R2. (R1) = Ko (Va – Vr) Vr (Vo – Va) – Rs kΩ R2 = Ko (Va – Vo) – Rs kΩ Notes: 1. Use only a single 1% resistor in either the (R1) or R2 location. Place the resistor as close to the ISR as possible. 2. Never connect capacitors to Vo adjust. Any capacitance added to the Vo adjust control pin will affect the stability of the ISR. Where = Original output voltage = Adjusted output voltage = Reference voltage (Table 1) = Multiplier constant (Table 1) = Series resistance (Table 1) Vo Va Vr Ko Rs Table 1 DC/DC CONVERTER ADJUSTMENT RANGE AND FORMULA PARAMETERS Series Pt # AL Case: 24V Bus 48V Bus CU Case: 24V Bus 48V Bus Vo(nom) Vo(min) Vo(max) Vr Ω) Ko (V·kΩ Ω) Rs (kΩ PT3327 PT3325 PT3326 PT3341 PT3321 PT3342 PT3322 PT4567 PT4565 PT4566 PT4581 PT4561 PT4582 PT4562 PT4585 1.8V 1.62V 2.5V 1.225V 69.58 80.6 1.8V 1.62V 1.98V 1.225V 69.58 80.6 2.0V 1.8V 2.2V 1.225V 62.47 150.0 2.5V 2.25V 2.75V 1.225V 42.33 121.0 3.3V 2.95V 3.65V 1.225V 68.89 150.0 5.0V 4.5V 5.5V 1.225V 68.71 121.0 PT3343 PT3323 PT3344 PT3324 PT4571 PT4583 PT4563 PT4584 PT4564 9.0V 7.0V 10.0V 2.5V 133.25 110 12.0V 10.8V 13.2V 2.5V 135.9 90.9 15.0V 13.5V 16.5V 2.5V 137.5 80.6 Figure 1 2 Remote On/Off + V in 7, 8, 9 30W Isolated +Vin -Vin 4, 5, 6 Cin 1 0 0 µF 100V (Optional) 19 Sns(+) -Vout 10 - 12 Sns(-) 13 +Vout 14 - 17 + V out Vo(adj) 18 (R1) Adj Down + Cout 3 3 0µF R2 Adj Up -V in For technical support and more information, see inside back cover or visit www.ti.com + L O A D -V out Application Notes continued PT3320/3340/4560/4580 Series Table 2 DC/DC CONVERTER ADJUSTMENT RESISTOR VALUES Series Pt # AL Case 24V Bus 48V Bus CU Case 24V Bus 48V Bus Current Vo(nom) Va(req’d) 1.65 1.7 1.75 1.8 1.85 1.9 1.95 2.0 2.05 2.1 2.15 2.2 2.25 2.3 2.35 2.4 2.45 2.5 2.55 2.6 2.65 2.7 2.75 2.95 3.0 3.05 3.1 3.15 3.2 3.25 3.3 3.35 3.4 3.45 3.5 3.55 3.6 3.65 PT3327 PT3325 PT3326 PT3341 PT3321 PT4567 8Adc 1.8V PT4565 8Adc 2.0V PT4566 8Adc 2.5V PT4581 PT4561 8Adc 3.3V PT4585 8Adc 1.8V (80.3)kΩ (189.0)kΩ (516.0)kΩ (80.3)kΩ (189.0)kΩ (516.0)kΩ 1.31MΩ 615.0kΩ 383.0kΩ 267.0kΩ 198.0kΩ 151.0kΩ 118.0kΩ 93.3kΩ 74.0kΩ 58.6kΩ 45.9kΩ 35.4kΩ 26.4kΩ 18.8kΩ 1.31MΩ 615.0kΩ 383.0kΩ R1 = (Blue) (62.5)kΩ (194.0)kΩ (589.0)kΩ 1.1MΩ 475.0kΩ 266.0kΩ 162.0kΩ (20.7)kΩ (64.7.0)kΩ (138.0)kΩ (285.0)kΩ (726.0)kΩ 726.0kΩ 302.0kΩ 161.0kΩ 90.6kΩ 48.3kΩ (127.0)kΩ (183.0)kΩ (261.0)kΩ (377.0)kΩ (572.0)kΩ (961.0)kΩ (2.13)MΩ 1.23MΩ 539.0kΩ 309.0kΩ 194.0kΩ 126.0kΩ 79.6kΩ 46.8kΩ R2 = Black For technical support and more information, see inside back cover or visit www.ti.com Application Notes PT3320/3340/4560/4580 Series Table 3 DC/DC CONVERTER ADJUSTMENT RESISTOR VALUES Series Pt # AL Case 24V Bus 48V Bus CU Case 24V Bus 48V Bus Current Vo(nom) Va(req’d) 4.5 4.55 4.6 4.65 4.7 4.75 4.8 4.85 4.9 4.95 5.0 5.05 5.1 5.15 5.2 5.25 5.3 5.35 5.4 5.45 5.5 PT3342 PT3322 PT4582 PT4562 6Adc 5.0V (246.0)kΩ (293.0)kΩ (352.0)kΩ (428.0)kΩ (529.0)kΩ (670.0)kΩ (882.0)kΩ (1.23)MΩ (1.94)MΩ 566.0kΩ 337.0kΩ 223.0kΩ 154.0kΩ 108.0kΩ 75.3kΩ 50.8kΩ 31.7kΩ 16.4kΩ R1 = (Blue) PT4571 3.3Adc 9.0V Va(req’d) 7.0 7.2 7.4 7.6 7.8 8.0 8.2 8.4 8.6 8.8 9.0 9.2 9.4 9.6 9.8 10.0 • 10.8 11.0 11.2 11.4 11.6 11.8 12.0 12.2 12.4 12.6 12.8 13.0 13.2 • 13.5 13.6 13.8 14.0 14.2 14.4 14.6 14.8 15.0 15.2 15.4 15.6 15.8 16.0 16.5 PT3343 PT3323 PT3344 PT3324 PT4583 PT4563 2.5Adc 12.0V PT4584 PT4564 2.0Adc 15.0V (9.9)kΩ (29.2)kΩ (53.2)kΩ (84.2)kΩ (125.0)kΩ (183.0)kΩ (270.0)kΩ (414.0)kΩ (703.0)kΩ (1.57)MΩ 556.0kΩ 223.0kΩ 112.0kΩ 56.6kΩ 23.3kΩ (285.0)kΩ (371.0)kΩ (500.0)kΩ (715.0)kΩ (1.15)MΩ 588.0kΩ 249.0kΩ 136.0kΩ 78.9kΩ 45.0kΩ 22.3kΩ (323.0)kΩ (355.0)kΩ (437.0)kΩ (522.0)kΩ (724.0)kΩ (1010.0)kΩ (1.58)MΩ 607.0kΩ 263.0kΩ 149.0kΩ 91.3kΩ 56.9kΩ 11.1kΩ R2 = Black For technical support and more information, see inside back cover or visit www.ti.com Application Notes PT3320/3340/4560/4580 Series Using Remote On/Off on Power Trends’ 30W Isolated DC-DC Converter Series Power Trends’ 30W isolated series of DC/DC converters incorporate a Remote On/Off function. This function may be used in applications for battery conservation, powerup/shutdown sequencing, or to co-ordinate the power-up of the regulator for active in-rush current control. (See TI application reports, SLTA021, and SLUA250). The Remote On/Off function is provided by pin 2. If pin 2 is left open-circuit, the converter provides a regulated output whenever a valid source voltage 1 is applied between +Vin (pins 7-9), and –Vin (pins 4-6). Applying a low voltage 2, with respect to –Vin (pin 2), disables the regulator output 3. Table 1 details the control requirements for this input. Figure 1 shows how a discrete MOSFET (Q1) may be referenced to the negative input voltage rail to control the Remote On/Off pin. 6. Keep the on/off transition to less than 1ms. This prevents erratic operation of the ISR, whereby the output voltage may drift un-regulated between 0V and the rated output voltage during power-up. 7. In Figure 1, Q1 is a low-threshold MOSFET. The components R1 and C1 are added to improve noise susceptibility. Figure 1 2 Remote On/Off 7, 8, 9 +V in 19 Sns(+) 30W Isolated +Vin -Vin 4, 5, 6 + -Vout 10 - 12 Sns(-) 13 +Vout 14 - 17 18 + C in C out 2 Table 1 Remote On/Off Control Requirements Parameter min max Enable (VIH) 2.5V 5 15V (or open circuit) Disable (VIL) –0.3V C1 0.01µF 4 0.8V Table 2 UVLO Thresholds Series UVLO Threshold PT3320/4560 PT3340/4580 34 ± 2.0V 16.5 ± 1.5V Vin Range 36 – 75V 18 – 60V 2. The Remote On/Off control pin uses –Vin (pins 4-6) as its ground reference. All voltages specified are with respect to –Vin. 3. When the converter output is disabled the current drawn from the input supply is typically reduced to 8mA (16mA maximum). 4. The internal circuitry comprises of a high impedance (3µA -10µA) current source. The open-circuit voltage is less than 10V. 5. The Remote On/Off pin is ideally controlled using devices with an open-collector (or open-drain) output. A small low-leakage MOSFET (<100nA) is recommended. A pull-up resistor is not required, but may be necessary to ensure that the Remote On/Off pin exceeds VIH(min) (see Table 1). Do not use a pull-up resistor to the +Vin input, or drive the pin above VIH(max). Q1 BSS138 -V in –V o OFF/ ON Notes: 1. These converters incorporate an “Under Voltage Lockout” (UVLO) function. This function automatically holds the converter output in the “Off” state until there is sufficient input voltage for the converter to produce a regulated output. Table 2 gives the applicable UVLO thresholds. +V o Vo(adj) R 1 , 10 k R 1 & C1 -See Note 7 Turn-On Time: When the Remote On/Off input is left open-circuit, the output of the converter is automatically enabled when a valid input voltage 1 is applied to the input power pins. The converter typically rises to full regulation within 30ms of the application of power (or after the release of the Remote On/Off pin with input power applied). The actual turn-on time will vary with the input voltage, output load, and the total amount of capacitance connected to the output. Using the circuit of Figure 1, Figure 2 shows the typical output voltage and input current waveforms for a PT3322/PT4562 after Q1 is turned off. The turn off of Q1 correlates with the fall of the Q1 Vgs waveform. The waveforms were measured with a 48Vdc input voltage, and 5-A resistive load. Figure 2 Vo (2V/Div) Iin (0.5A/Div) Q1Vgs (10V/Div) HORIZ SCALE: 2ms/Div For technical support and more information, see inside back cover or visit www.ti.com Application Notes PT3320/3340/4560/4580 Series VDE Approved Installation Instructions (Installationsanleitung) Nennspannnug (Rated Voltage): PT4560 36 to 72 Vdc, Transient to 75Vdc PT4580 18 to 60 Vdc, PT4599 19 to 31 Vdc Nennaufnahme (Rated Input): PT4560 1.5 Adc PT4580, PT4599 3.0 Adc Nennleistung (Rated Power): 30 Watts Maximum Ausgangsspannung (Sec. Voltage): PT4560 Series PT4561, 3.3 Vdc, 8.0 Adc PT4562, 5.0 Vdc, 6.0 Adc Ausgangsstrom (Sec. Current): PT4563, 12.0 Vdc, 2.5 Adc oder (or) PT4564, 15.0 Vdc, 2.0 Adc Ausgangsleistung (Sec. Power): PT4565, 2.0 Vdc, 8.0 Adc PT4566, 2.5 Vdc, 8.0 Adc PT4567, 1.8 Vdc, 8.0 Adc PT4568, 5.2 Vdc, 6.0 Adc PT4569, 6.0 Vdc, 5.0 Adc PT4570, 8.0 Vdc, 3.75 Adc PT4571, 9.0 Vdc, 3.3 Adc PT4580 Series PT4581, 3.3 Vdc, 8.0 Adc PT4582, 5.0 Vdc, 6.0 Adc PT4583,12.0 Vdc, 2.5 Adc PT4584,15.0 Vdc, 2.0 Adc PT4585, 1.8 Vdc, 8.0 Adc PT4599, 5.0 Vdc, 6.0 Adc Angabe der Umgebungstemperatur (Information on ambient temperature): +85°C Ambient or 100°C Case Maximum Besondere Hinweise (Special Instructions): Es ist vorzusehen, daß die Spannungsversorgung in einer Endanwendung über eine isolierte Sekundaerschaltung bereit gestellt wird. Die Eingangspannung der Spannungsversorgungsmodule muss eine verstaerkte Isolierung von der Wechselstromquelle aufweisen. Die Spannungsversorgung muss gemaess den Gehaeuse-, Montage-, Kriech- und Luftstrecken-, Markierungs- und Trennanforderungen der Endanwendung installiert werden. Bei Einsatz eines TNV-3Einganges muss die SELV-Schaltung ordnungsgemaess geerdet werden. (The power supply is intended to be supplied by isolated secondary circuitry in an end use application. The input power to these power supplies shall have reinforced insulation from the AC mains. The power supply shall be installed in compliance with the enclosure, mounting, creepage, clearance, casualty, markings, and segregation requirements of the end-use application. When the input is TNV-3, the SELV circuitry must be reliably grounded.) 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