PT4220 Series 10-W Low-Profile 48V-Input Isolated DC/DC Converter SLTS127A (Revised 1/14/2002) Features • • • • • • • • 10W Output Power Input Voltage: 36V to 75V Output Voltages: 1.2V to 13.2V 1500 VDC Isolation Temp Range: –40°C to +85°C Remote On/Off Control Undervoltage Lockout Output Current Limit Description • • • • • Short-Circuit Protection Low-Profile Package (8mm) Space Saving Package Solderable Copper Case Safety Agency Approvals: UL 60950 CSA 22.2 60950 Ordering Information The PT4220 power modules are a series of DC/DC converters housed in an ultra-low profile (8mm) solderable copper case. The series includes a number of preset output voltages ranging from 1.3V † up to 12V, all fully approved for Telecom use. They may also be used in many other applications that require input-output isolation over an extended temperature range. The modules are an ideal choice for low-power digital and analog circuits, including DSPs and microcontrollers. The flexibility of input-output isolation also allows the output to be configured for negative voltage operation. The PT4220 series is made available in both horizontal and vertical pin configurations, including surface mount. PT4221¨ PT4222¨ PT4223¨ PT4224¨ PT4225¨ PT4226¨ † PT4227¨ =1.8V/3A =3.3V/3A =5.0V/2A =12.0V/0.85A =2.5V/3A =1.5V/3A =1.3V/3A Pin-Out Information (5.4W) Pin Remote On/Off * 2 Do not connect 3 –Vin 4 Do not connect 5 +Vin 6 -Vout 7 -Vout PT Series Suffix (PT1234 x ) 8 +Vout Case/Pin Configuration 9 +Vout (7.5W) (4.5W) (3.9W) † Adjustable to 1.2V Order Suffix N A C Vertical Horizontal SMD Package Code 10 Vout Adj * (EPE) (EPF) (EPG) * For further information, see application notes. (Reference the applicable package code drawing for the dimensions and PC board layout) Standard Application +Vout +Vin 5 3 -Vin +Vin +Vout PT4220 -Vin Function 1 Remote On/Off 1 For technical support and more information, see inside back cover or visit www.ti.com –Vout Vo(adj) 10 8, 9 L O A D 6, 7 -Vout PT4220 Series 10-W Low-Profile 48V-Input Isolated DC/DC Converter Specifications (Unless otherwise stated, T a =25°C, Vin =48V, Cin =0µF, Cout =0µF, and Io =Iomax) Characteristic Symbol Conditions Output Current Io Over Vin range Input Voltage Range Set Point Voltage Tolerance Temperature Variation Line Regulation Load Regulation Total Output Voltage Variation Vin Vo tol Regtemp Regline Regload ∆Votot Over Io Range Efficiency η Min Vo ≤ 3.3V Vo =5.0V Vo = 12V –40° ≤Ta ≤ +85°C, Io =Iomin Over Vin range Over Io range Includes set-point, line, load, –40° ≤Ta ≤ +85°C Vo = 12V Vo = 5.0V Vo = 3.3V Vo = 2.5V Vo = 1.8V Vo = 1.5V Vo = 1.3V Vo ≤ 5.0V Vo = 12V Vo Ripple (pk-pk) Vr 20MHz bandwidth Transient Response ttr 1A/µs load step, 50% to 100% Iomax Vo over/undershoot Vo ≤ 5.0V Vo = 12V Vo ≥2.5V Vin =36V, ∆Vo = –1% Over Vin range ∆Vtr Output Voltage Adjust Current Limit Threshold Switching Frequency Under-Voltage Lockout Remote On/Off (Pin 1) Input High Voltage Input Low Voltage Input Low Current Standby Input Current Internal Input Capacitance External Output Capacitance Vadj Ilim ƒs UVLO 0.1 (1) 0.1 (1) 0.1 (1) 36.0 — — — — PT4220 SERIES Typ Max — — — 48.0 ±1 ±0.2 ±1 ±5 Units 3 2 0.85 75.0 ±2 — — — VDC %Vo %Vo mV mV %Vo — ±1.5 ±3 — — — — — — — — — — — — ±10 — 250 — 87 85 81 78 73 71 65 50 100 75 ±150 ±350 — 150 300 32 — — — — — — — — — — — — — — 350 — 4.5 –0.2 — — — 0 (5) 0 (5) 1500 — 10 -40 -40 — — –0.5 1 0.66 — — — 1,100 — — — Open (3) +0.8 — — — 1000 330 — — — +85 (4) +125 V pF MΩ °C °C 4.7 — — 106 Hrs — 500 — G’s — 20 (6) — G’s — 20 — grams % mVpp µs mV %Vo %Iomax kHz V Referenced to –Vin (pin 3) VIH VIL IIL Iin standby Cin Cout Isolation Voltage Capacitance Resistance Operating Temperature Range Storage Temperature Reliability Ta Ts MTBF Mechanical Shock — Mechanical Vibration — Weight Flammability — — pins 1 & 3 connected Vo ≤ 5.0V Vo = 12V Input–output/input–case Input to output Input to 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 Mil-Std-883D, Method 2007.2 20-2000Hz, all case styles soldered to PC — Materials meet UL 94V-0 V mA mA µF µF Notes: (1) The DC/DC converter will operate at no load with reduced specifications. (2) The maximum output current reduces the output power of the following devices to less than 10W:PT4225 =7.5W; PT4221 =5.4W; PT4226 =4.5W; PT4227 =3.9W. (3) The Remote On/Off (pin 1) has an internal pull-up, and if it is left open circuit the converter will operate when input power is applied. The open-circuit voltage is typically 5V. Refer to the application notes for interface considerations. (4) See Safe Operating Area curves or contact the factory for the appropriate derating. (5) An output capacitor is not required for proper operation. (6) The case pins on through-hole pin configurations (N & A) must be soldered. For more information see the applicable package outline drawing. For technical support and more information, see inside back cover or visit www.ti.com Typical Characteristics PT4220 Series 10-W Low-Profile 48V-Input Isolated DC/DC Converter PT4222, Vo =3.3VDC PT4223, Vo =5.0VDC (See Note A) PT4224, Vo =12.0VDC (See Note A) Efficiency vs Output Current Efficiency vs Output Current 90 (See Note A) Efficiency vs Output Current 90 90 36.0V 48.0V 60.0V 75.0V 75 70 80 VIN 70 36.0V 48.0V 60.0V 75.0V VIN 80 Efficiency - % VIN 80 Efficiency - % Efficiency - % 85 60 36.0V 48.0V 60.0V 75.0V 70 60 65 60 50 0 0.5 1 1.5 2 2.5 50 3 0 0.4 0.8 Iout (A) 1.2 1.6 2 0 30 VIN 36.0V 48.0V 60.0V 75.0V 30 20 VIN Ripple - mV 40 Ripple - mV Ripple - mV 36.0V 48.0V 60.0V 75.0V 20 10 1 1.5 2 2.5 0 0.4 0.8 1.2 1.6 2 0 Power Dissipation vs Output Current 1.6 75.0V 60.0V 48.0V 36.0V 1.5 1 Pd - Watts VIN 2 0 2 2.5 75.0V 60.0V 48.0V 36.0V 0.8 3 1 1.2 VIN 1.2 VIN 75.0V 60.0V 48.0V 36.0V 0.8 0.4 0 1.5 0.8 Power Dissipation vs Output Current 0.4 0.5 0.6 1.6 Pd - Watts 2.5 1 0.4 Iout (A) 2 0.5 0.2 Iout (A) Power Dissipation vs Output Current 0 0 0.4 0.8 Iout (A) 1.2 1.6 2 0 0.2 0.4 Iout (A) 0.6 0.8 1 Iout (A) Safe Operating Area @Vin =48V (Note B) Safe Operating Area @Vin =48V (Note B) 90 90 90 80 80 Airflow 70 200LFM 120LFM 60LFM Nat conv 60 50 40 30 Ambient Temperature (°C) Safe Operating Area @Vin =48V (Note B) Airflow 70 200LFM 120LFM 60LFM Nat conv 60 50 40 30 0 0.5 1 1.5 Iout (A) 2 2.5 3 80 Airflow 70 200LFM 120LFM 60LFM Nat conv 60 50 40 30 20 20 20 Ambient Temperature (°C) Pd - Watts 40 0 3 3 0 36.0V 48.0V 60.0V 75.0V 60 0 Iout (A) Ambient Temperature (°C) 80 20 10 0 1 100 40 VIN 0.8 120 60 50 0.6 Output Ripple vs Output Current 50 0.5 0.4 Iout (A) Output Ripple vs Output Current Output Ripple vs Output Current 70 0 0.2 Iout (A) 0 0.4 0.8 1.2 Iout (A) 1.6 2 0 0.2 0.4 Note A: Characteristic data has been developed from actual products tested at 25°C. This data is considered typical data for the Converter. Note B: SOA curves represent the conditions at which internal components are at or below the manufacturer’s maximum operating temperatures For technical support and more information, see inside back cover or visit www.ti.com 0.6 Iout (A) 0.8 1 Application Notes PT4220/4240 Series Using the Remote On/Off with the PT4220/4240 Isolated 10W Excalibur DC/DC Converters For applications requiring output voltage On/Off control, the PT4220/4240 DC/DC converter series incorporates a “Remote On/Off” control (pin 1). This feature can be used to switch the module off without removing the applied input source voltage. The converter functions normally with Pin 1 open-circuit, providing a regulated output voltage when a valid source voltage is applied to +Vin (pin 5), with respect to –V in (pin 3). When a low-level 1 ground signal is applied to pin 1, the converter output will be turned off. Figure 1 shows an application schematic, which details the typical use of the Remote On/Off function. Note the discrete transistor (Q1). The pin has its own internal pull-up, allowing it to be controlled with an open-collector or open-drain device (See notes 2 & 3). Table 1 gives the threshold requirements. Table 2; UVLO Thresholds 4 Series Vin Range PT4220 36 – 75V UVLO Threshold 32V ±2V PT4240 18 – 36V 15.8V ±2V Figure 1 5 + V in +Vin +Vout 8, 9 +Vo 6, 7 -V o PT4220/4240 -V in 3 Note 1 -Vin Remote On/Off 1 -Vout V o (adj) 10 Q1 BSS138 1 =OFF Note 1 Vdd R1 10k U1a Note 1 When placed in the “Off” state, the standby current drawn from the input source is typically reduced to less than 1mA. Table 1; Pin 1 Remote On/Off Control Parameters 1 Parameter Min Typ Enable (V IH) 4.5V — — Disable (VIL) — — 0.8V Vo/c [Open-Circuit] Iin [pin 1 at –Vin] Max 5.0V — — –0.5mA Notes: 1. The Remote On/Off control uses –Vin (pin 3) as its ground reference. All voltages specified are with respect to –Vin. 2. Use an open-collector device (preferably a discrete transistor) for the Remote On/Off input. A pull-up resistor is not necessary. To disable the output voltage, the control pin should be pulled low to less than +0.8VDC. Turn-On Time: In the circuit of Figure 1, turning Q1 on applies a low-voltage to pin 1 and disables the converter output. Correspondingly, turning Q1 off allows pin 1 to be pulled high by an internal pull-up resistor. The converter produces a regulated output voltage within 60ms. Figure 2 shows shows the output response of a PT4223 (5.0V) following the turn-off of Q1. The turn off of Q1 corresponds to the drop in Q1 Vgs. Although the risetime of the output voltage is short (<5ms), the indicated delay time will vary depending upon the input voltage and the module’s internal timing. The waveform was measured with a 48Vdc input voltage, and a 1.4A resistive load. Figure 2 3. The Remote On/Off pin may be controlled with devices that have a totem-pole output. This is provided the drive voltage meets the threshold requirements in Table 1. Do not apply more than +20V. If a TTL gate is used, a pull-up resistor may be required to the logic supply voltage. Vo (2V/Div) Iin (0.2A/Div) 4. The PT4220/4240 converters incorporate an “UnderVoltage Lockout” (UVLO). The UVLO will keep the module off when the input voltage to the converter is low, regardless of the state of the Remote On/Off control. Table 2 gives the UVLO input voltage thresholds. Delay Time Q1Vgs (10V/Div) HORIZ SCALE: 10ms/Div For technical support and more information, see inside back cover or visit www.ti.com Application Notes PT4220/4240 Series Adjusting the Output Voltage of the 10W-Rated Excalibur™ Series of Isolated DC/DC Converters The factory pre-set output voltage of Power Trends’ 10W Excalibur series of isolated DC-DC converters may be adjusted over a narrow 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). R2 68.845 Va – Vo = Where, Vo Va Rs – Rs kΩ = Original output voltage = Adjusted output voltage = Internal resistance (Table 1) Notes: Adjust Up: An increase in the output voltage is obtained by adding a resistor, R2 between pin 10 (Vo adjust), and pins 6 & 7 (–Vout). 1. Use only a single 1% resistor in either the (R1) or R2 location. Place the resistor as close to the ISR as possible. Adjust Down: Add a resistor (R1), between pin 10 (Vo adjust) and pins 8 & 9 (+Vout). 2. Never connect capacitors to Vo adjust. Any capacitance added to the Vo adjust control pin will affect the stability of the ISR. Refer to Figure 1 and Table 2 for both the placement and value of the required resistor, (R1) or R2. 3. The output power is limited to 10W. If the output voltage is increased, the maximum load current must be derated according to the following equation. The values of (R1) [adjust down], and R2 [adjust up], can also be calculated using the following formulas. (R1) = 56.2 (Va – 1.225) Vo – Va – Rs = 10 Va Io(max) In any instance, the load current must not exceed the converter’s rated current (See Table 1). kΩ Table 1 DC/DC CONVERTER ADJUSTMENT RANGE AND FORMULA PARAMETERS Series Pt # 24V Bus 48V Bus Rated Current 3 PT4247 PT4227 3A PT4246 PT4226 3A PT4241 PT4221 3A PT4245 PT4225 3A PT4242 PT4222 3A PT4243 PT4223 2A PT4244 PT4224 0.85A Vo(nom) Vo(min) Vo(max) Ω) Rs (kΩ 1.3V 1.2V 1.4V 340.0 1.5V 1.45V 1.65V 243.0 1.8V 1.7V 1.98V 243.0 2.5V 2.25V 2.75V 187.0 3.3V 2.95V 3.65V 187.0 5.0V 4.5V 5.5V 110.0 12.0V 10.8V 13.2V 49.9 Figure 1 +V in 5 + V in + V out +V O 8, 9 PT4220/4240 3 -V in -V in Remote On/Off 1 -V out V o (adj) 6, 7 (R1) Adj Down L O A D 10 R2 Adjust Up –V O For technical support and more information, see inside back cover or visit www.ti.com Application Notes continued PT4220/4240 Series Table 2 DC/DC CONVERTER ADJUSTMENT RESISTOR VALUES Series Pt # 24V Bus 48V Bus Vo(nom) Va(req’d) 1.2 1.25 1.3 1.35 1.4 1.45 1.5 1.55 1.6 1.65 1.7 1.75 1.8 1.85 1.9 1.95 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 R1 = (Blue) PT4247 PT4227 PT4246 PT4226 PT4241 PT4221 PT4245 PT4225 PT4242 PT4222 1.3V 1.5V 1.8V 2.5V 3.3V PT4243 PT4223 5.0V Va(req’d) 4.5 4.6 4.7 4.8 4.9 5.0 5.1 5.2 5.3 5.4 5.5 10.8 11.0 11.5 12.0 12.5 13.0 13.2 (0.0)kΩ (340.0)kΩ 340.0kΩ 0.0.0kΩ (9.9)kΩ 1130.0kΩ 445.0kΩ 216.0kΩ (23.9)kΩ (347.0)kΩ 1130.0kΩ 445.0kΩ 216.0kΩ (43.4)kΩ (115.0)kΩ (235.0)kΩ (473.0)kΩ (1190.0)kΩ PT4244 PT4224 12.0V (258.0)kΩ (364.0)kΩ (541.0)kΩ (895.0)kΩ (1960.0)kΩ 578.0kΩ 234.0kΩ 119.0kΩ 62.1kΩ 27.7kΩ (399.0)kΩ (499.0)kΩ (1110.0)kΩ 87.8kΩ 18.9kΩ 7.5kΩ 1190.0kΩ 501.0kΩ 272.0kΩ 157.0kΩ 88.4kΩ (90.0)kΩ (146.0)kΩ (223.0)kΩ (340.0)kΩ (534.0)kΩ (923.0)kΩ (2090.0)kΩ 1190.0kΩ 501.0kΩ 272.0kΩ 157.0kΩ 88.4kΩ 42.5kΩ 9.7kΩ R2 = Black For technical support and more information, see inside back cover or visit www.ti.com PACKAGE OPTION ADDENDUM www.ti.com 13-Oct-2005 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Eco Plan (2) Qty PT4221A ACTIVE SIP MOD ULE EPF 10 15 TBD Call TI Level-1-215C-UNLIM PT4222A ACTIVE SIP MOD ULE EPF 10 15 TBD Call TI Level-1-215C-UNLIM PT4222C ACTIVE SIP MOD ULE EPG 10 15 TBD Call TI Level-3-215C-168HRS PT4223A ACTIVE SIP MOD ULE EPF 10 15 TBD Call TI Level-1-215C-UNLIM PT4223C ACTIVE SIP MOD ULE EPG 10 15 TBD Call TI Level-3-215C-168HRS PT4224A ACTIVE SIP MOD ULE EPF 10 15 TBD Call TI Level-1-215C-UNLIM PT4224C ACTIVE SIP MOD ULE EPG 10 15 TBD Call TI Level-3-215C-168HRS PT4224N ACTIVE SIP MOD ULE EPE 10 15 TBD Call TI Level-1-215C-UNLIM PT4227A ACTIVE SIP MOD ULE EPF 10 15 TBD Call TI Level-1-215C-UNLIM PT4227C ACTIVE SIP MOD ULE EPG 10 15 TBD Call TI Level-3-215C-168HRS PT4227N ACTIVE SIP MOD ULE EPE 10 15 TBD Call TI Level-1-215C-UNLIM Lead/Ball Finish MSL Peak Temp (3) (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS) or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. 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