PT6620 Series 6 A 12-V Input Integrated Switching Regulator SLTS036C - FEBRUARY 1999 - REVISED JUNE 2003 Standard Application REMOTE SENSE 1 VIN 4,5,6 PT6620 VOUT 11,12,13 3 C1 STBY 7,8,9,10 + C2 + LOAD Q1 COM COM C1 = Required 330µF electrolytic (1) C2 = Required 330µF electrolytic (1) Q1 = Optional N-Channel MOSFET Features Description • • • • • • • • The PT6620 series is a line of 12-V input Integrated Switching Regulators (ISRs). These regulators are designed for stand-alone operation in applications requiring as much as 6 A of output current. The PT6620 series is packaged in a 14-Pin SIP (Single In-line Package), which is available in either a vertical or horizontal configurations, including surface mount. Single Device: 6-A Output Input Voltage Range: 9 V to 16 V Adjustable Output Voltage 83 % Efficiency Remote Sense Capability Standby Function Over-Temperature Protection 16-pin Mount Option (Suffixes L, M, Q, & F) Pin Configuration Ordering Information PT Series Suffix (PT1234 x ) Pin Function PT6621¨ PT6622¨ PT6623¨ PT6624¨ PT6625¨ PT6626¨ PT6627¨ Case/Pin Configuration =3.3 Volts =1.5 Volts =2.5 Volts =3.6 Volts =5.0 Volts =9.0 Volts =1.8 Volts Order Suffix Package Code * 1 Vo Sense 2 Do Not Connect 3 STBY* 4 Vin 5 Vin 6 Vin 7 GND 8 GND 9 GND 10 GND Vertical Horiz SMD Horiz, 2-Pin Tab SMD, 2-Pin Tab Horiz, 2-Pin Ext Tab SMD, 2-Pin Ext Tab Vertical, Side Tab Horiz, Side Tab SMD, Side Tab 11 Vout * Previously known as package styles 400/410. 12 Vout 13 Vout (Reference the applicable package code drawing for the dimensions and PC board layout) 14 Vo Adjust P D E M L Q F R G B (EED) (EEA) (EEC) (EEM) (EEL) (EEQ) (EEF) (EEE) (EEG) (EEK) Specifications Unless otherwise stated, Ta =25 °C, C2 =330 µF, Vin =12 V, Io =Iomax PT6620 SERIES Characteristics Symbols Conditions Min Output Current Io Ta = 60 °C, 200 LFM, pkg P Ta = 25 °C, natural convection 0.1 0.1 Input Voltage Range Vin 0.1 A ≤ Io ≤ 6 A Output Voltage Tolerance ∆Vo Ta = 0 to 60 °C Output Voltage Adjust Range Voadj Pin 14 to Vo or ground Vo ≤ 5 V 6 V ≤Vo ≤9 V Vo Vo Vo Vo Vo Vo = 3.3 V = 1.5 V = 2.5 V = 3.6 V =5 V =9 V Typ Max Units (2) (2) — — 6 6 A 9 Vo + 3 — — 16 16 V Vo – 0.1 — 2.3 1.4 1.9 2.5 2.9 5.2 — — — — — — Vo + 0.1 4.5 2.6 3.7 4.8 6.5 10 V V Line Regulation Regline Vin(min) ≤Vin ≤Vin(max) — ±0.5 ±1 %Vo Load Regulation Regload 0.1 ≤ I o ≤6 A — ±0.5 ±1 %Vo Vo Ripple (pk-pk) Vr 20 MHz bandwidth, — — 50 1 — — mVpp %Vo t tr ∆Vtr 1 A/µs load step, 50 to 100% Io max Recovery time Vo over/undershoot — — 100 150 — — µSec mV Vo =3.3/3.6 V Vo = .5 V Vo =2.5 V Vo =5.0 V Vo =9.0 V — — — — — 84 68 76 86 93 — — — — — % Vo =3.3/3.6 V Vo =1.5 V Vo =2.5 V Vo =5.0 V Vo =9.0 V — — — — — 83 66 75 85 92 — — — — — % 500 550 550 650 600 750 kHz kHz Transient Response η Efficiency Io =3 A Io =6 A Switching Frequency ƒs Vin (min) ≤Vin≤Vin(max) 0.1 A ≤ Io ≤ 6 A Vo < 6 V Vo > 6 V PT6622 Except PT6622 Continued For technical support and more information, see inside back cover or visit www.ti.com PT6620 Series 6 A 12-V Input Integrated Switching Regulator SLTS036C - FEBRUARY 1999 - REVISED JUNE 2003 Specifications (continued) PT6620 SERIES Characteristics Symbols Conditions Min Operating Temperature Range Ta Over V in range Typ Storage Temperature Ts — –40 — +125 °C Mechanical Shock — Per Mil-STD-883D, Method 2002.3 — 500 — G’s Mechanical Vibration — Per Mil-STD-883D, Method 2007.2, 20–2000 Hz, soldered in a PC board — 7.5 — G’s Weight — — — 14 — grams –40 Max — +85 Units (3) °C Notes: (1) The PT6620 Series requires a 330 µF(output) and 100 µF(input) electrolytic capacitors for proper operation in all applications. (2) ISR will operate down to no load with reduced specifications (3) See safe Operating Area curves or contact the factory for the appropriate derating. T Y P I C A L PT6620 Series @Vin=12 V C H A R A C T E R I S T I C S Safe Operating Area, Vin =12 V (See Note A) PT6621/6622/6623P, Vo ≤3.3 V Efficiency vs Output Current 100 90.0 90 80.0 80 PT6621 PT6622 PT6623 70 PT6625 PT6626 60 50 Ambient Temperature (°C) Efficiency (%) (See Note B) 70.0 Airflow 200LFM 120LFM 60LFM Nat conv 60.0 50.0 40.0 30.0 40 0 1 2 3 4 5 20.0 6 0.0 1.0 2.0 Output Current (A) Output Ripple vs Output Current 4.0 5.0 6.0 PT6625P, Vo =5 V 30 90.0 25 80.0 20 PT6621 PT6622 PT6623 15 PT6625 PT6626 10 5 Ambient Temperature (°C) Ripple (mVpp) 3.0 Iout (A) 70.0 Airflow Nat conv 60LFM 120LFM 200LFM 60.0 50.0 40.0 30.0 0 20.0 0 1 2 3 4 5 6 0.0 1.0 2.0 Output Current (A) Power Dissipation vs Output Current 4.0 5.0 6.0 PT6626P, Vo =9 V 5 90.0 PT6621 3 PT6622 PT6623 PT6625 2 PT6626 1 Ambient Temperature (°C) 80.0 4 Pd (Watts) 3.0 Iout (A) 70.0 Airflow Nat conv 60LFM 120LFM 200LFM 60.0 50.0 40.0 30.0 0 20.0 0 1 2 3 4 Output Current (A) 5 6 0.0 1.0 2.0 3.0 4.0 5.0 6.0 Iout (A) Note A: All characteristic data in the above graphs has been develped from actual products tested at 25 °C. This data is considered typical for the ISR. 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 Application Notes PT6620 Series Adjusting the Output Voltage of the PT6620 6 A, 12-V Bus Converter Series The output voltage of the Power Trends PT6620 Series ISRs may be adjusted higher or lower than the factory trimmed pre-set voltage with the addition of a single external resistor. Table 1 accordingly gives the allowable adjustment range for each model in the series as Va (min) and Va (max). Figure 1 1 Vsense 4,5,6 Vin PT6620 Vin GND STBY 11,12,13 Vo Vo(adj) 7,8,9,10 3 Adjust Up: An increase in the output voltage is obtained by adding a resistor R2, between Vo Adjust (pin 14) and GND (pins 7-10). Vo 14 (R1) Adj Down + + C in C out L O A D R2 Adjust Up Adjust Down: Add a resistor (R1), between Vo Adjust (pin 14 ) and Vout (pins 11-13). COM COM Refer to Figure 1 and Table 2 for both the placement and value of the required resistor, either (R1) or R2 as appropriate. 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. The values of (R1) [adjust down], and R2 [adjust up], can also be calculated using the following formulae. 2. Never connect capacitors from Vo Adjust to either GND, Vout, or the Remote Sense pin. Any capacitance added to the Vo adjust pin will affect the stability of the ISR. 3. If the Remote Sense feature is being used, connecting the resistor (R1) between Vo Adjust (pin 14) and Remote Sense (pin 1) can benefit load regulation. 4. The minimum input voltage required by the part is Vout + 3, or 9 V, whichever is higher. (R1) = Ro (Va – 1.25) – Rs (Vo – Va) kΩ R2 = 1.25 Ro Va - Vo kΩ Where: Vo Va Ro Rs – Rs = Original output voltage = Adjusted output voltage = The resistance value in Table 1 = The series resistance from Table 1 Table 1 PT6620 ADJUSTMENT AND FORMULA PARAMETERS Series Pt # PT6622 PT6623 PT6621 PT6624 Vo (nom) Va (min) 1.5 V 2.5 V 3.3 V 3.6 V 5V 1.4 V 1.9 V 2.3 V 2.5 V 2.9 V Va (max) Ω) Ro (kΩ 2.7 V 3.7 V 4.5 V 4.8 V 6.5 V Ω) Rs (kΩ 2.49 4.99 10.0 4.99 PT6625 PT6626 9.0 V 5.2 V 10 V 12.1 12.1 16.2 12.1 12.1 12.1 12.1 12.1 For technical support and more information, see inside back cover or visit www.ti.com Application Notes continued PT6620 Series Table 2 PT6620 ADJUSTMENT RESISTOR VALUES Series Pt # Vo (nom) Va (req’d) 1.4 PT6622 1.5 V PT6623 2.5 V PT6621 3.3 V PT6624 3.6 V PT6625 5V (5.0) kΩ 1.5 Series Pt # Vo (nom) Va (req’d) PT6625 5V PT6626 9V 5.2 89.1 kΩ (0.5) kΩ 5.3 55.4 kΩ (1.1) kΩ 1.6 59.9 kΩ 5.4 38.5 kΩ (1.9) kΩ 1.7 28.7 kΩ 5.5 28.4 kΩ (2.6) kΩ 1.8 18.3 kΩ 5.6 21.7 kΩ (3.4) kΩ 1.9 13.1 kΩ (5.8) kΩ 5.7 16.8 kΩ (4.2) kΩ 2.0 10.0 kΩ (10.0) kΩ 5.8 13.2 kΩ (5.1) kΩ 2.1 7.9 kΩ (16.3) kΩ 5.9 10.4 kΩ (6.1) kΩ 2.2 6.4 kΩ (26.7) kΩ 6.0 8.2 kΩ (7.1) kΩ 2.3 5.3 kΩ (47.5) kΩ (0.6) kΩ 6.1 6.3 kΩ (8.1) kΩ 2.4 4.4 kΩ (110.0) kΩ (3.4) kΩ 6.2 4.8 kΩ (9.3) kΩ 2.5 3.8 kΩ 6.3 3.5 kΩ (10.5) kΩ 2.6 3.2 kΩ (6.8) kΩ (1.7) kΩ 120.0 kΩ (11.2) kΩ (4.2) kΩ 6.4 2.4 kΩ (11.9) kΩ 2.7 57.5 kΩ (17.1) kΩ (7.4) kΩ 6.5 1.4 kΩ (13.3) kΩ 2.8 36.7 kΩ (25.4) kΩ (11.3) kΩ 6.6 (14.9) kΩ 2.9 26.3 kΩ (37.8) kΩ (16.4) kΩ (0.6) kΩ 6.7 (16.6) kΩ 3.0 20.0 kΩ (58.5) kΩ (23.2) kΩ (2.1) kΩ 6.8 (18.4) kΩ 3.1 15.8 kΩ (99.8) kΩ (32.7) kΩ (3.7) kΩ 6.9 (20.5) kΩ 3.2 12.9 kΩ (224.0)kΩ (46.9) kΩ (5.5) kΩ 7.0 (22.7) kΩ 3.3 10.6 kΩ (70.6) kΩ (7.4) kΩ 7.1 (25.2) kΩ 3.4 8.9 kΩ 139.0 kΩ (118.0) kΩ (9.7) kΩ 7.2 (27.9) kΩ 3.5 7.5 kΩ 63.5 kΩ (260.0) kΩ (12.2) kΩ 7.3 (31.0) kΩ 3.6 6.4 kΩ 38.3 kΩ (15.1) kΩ 7.4 (34.4) kΩ 3.7 5.4 kΩ 25.7 kΩ 139.0 kΩ (18.4) kΩ 7.5 (38.3) kΩ 3.8 18.2 kΩ 63.5 kΩ (22.3) kΩ 7.6 (42.8) kΩ 3.9 13.1 kΩ 38.3 kΩ (26.9) kΩ 7.8 (53.9) kΩ 4.0 9.5 kΩ 25.7 kΩ (32.5) kΩ 8.0 (69.6) kΩ 4.1 6.8 kΩ 18.2 kΩ (39.2) kΩ 8.2 (93.0) kΩ 4.2 4.7 kΩ 13.1 kΩ (47.6) kΩ 8.4 (132.0) kΩ 4.3 3.0 kΩ 9.5 kΩ (58.5) kΩ 8.6 (210.0) kΩ 4.4 1.7 kΩ 6.8 kΩ (73.0) kΩ 8.8 (445.0) kΩ 4.5 0.5 kΩ 4.7 kΩ (93.2) kΩ 9.0 4.6 3.0 kΩ (124.0) kΩ 9.2 63.5 kΩ 4.7 1.7 kΩ (174.0) kΩ 9.4 25.7 kΩ 4.8 0.5 kΩ (275.0) kΩ 9.6 13.1 kΩ (579.0) kΩ 9.8 6.8 kΩ 10.0 3.0 kΩ 4.9 5.0 5.1 R1 = (Blue) 190.0 kΩ R2 = Black For technical support and more information, see inside back cover or visit www.ti.com Application Notes PT6620 Series Using the Standby Function on the PT6620 Series of 12-V Bus Converters For applications requiring output voltage On/Off control, the 14-pin PT6620 ISR series incorporates a standby function. This feature may be used for power-up/shutdown sequencing, and wherever there is a requirement for the output status of the module to be controlled by external circuitry. Figure 1 1 Vsense 4,5,6 V in PT6620 Vin STBY The standby function is provided by the STBY* control, pin 3. If pin 3 is left open-circuit the regulator operates normally, providing a regulated output whenever a valid supply voltage is applied to Vin (pins 4, 5, & 6) with respect to GND (pins 7-10). Connecting pin 3 to ground 1 will disable the regulator output and reduce the input current to less than 30 mA 3. Grounding the standby control will also hold-off the regulator output during the period that input power is applied. The standby input is ideally controlled with an opencollector (or open-drain) discrete transistor (See Figure 1). It can also be driven directly from a dedicated TTL 2 compatible gate. Table 1 provides details of the threshold requirements. Table 1 Inhibit Control Thresholds (1,2) Parameter Min Max Enable (VIH) Disable (VIL) 1V –0.1V 5V 0.3V Notes: 1. The Standby input on the PT6620 regulator series may be controlled using either an open-collector (or open-drain) discrete transistor, or a device with a totem-pole output. A pull-up resistor is not necessary. The control input has an open-circuit voltage of about 1.5 Vdc. To disable the regulator output, the control pin must be “pulled” to less than 0.3 Vdc with a low-level 0.25 mA max. sink to ground. + 3 GND 7,8,9,10 Vo 11,12,13 Vo Vo(adj) + 14 C in C out COM COM Q1 BSS138 Inhibit +5V V in Turn-On Time: Turning Q1 in Figure 1 off, removes the low-voltage signal at pin 3 and enables the output. The PT6620 series of regulators will provide a fully regulated output voltage within 20ms. The actual turn-on time may vary with load and the total amount of output capacitance. Figure 2 shows the typical output voltage waveform of a PT6625 (5 V) following the prompt turn off of Q1 at time t =0 secs. The waveform was measured with a 12-V input voltage, and 5-A resistive load. Figure 2 Vo (2V/Div) 2. The Standby input on the PT6620 series is also compatible with TTL logic. A standard TTL logic gate will meet the 0.3 V VIL(max) requirement (Table 1 ) at 0.25 mA sink current. Do not drive the Standby control input above 5 Vdc. 3. When the regulator output is disabled the current drawn from the input source is reduced to approximately 15 mA (30 mA maximum). 4. The turn-off time of Q1, or rise time of the standby input is not critical on the PT6620 series. Turning Q1 off slowly, over periods up to 100 ms, will not damage the regulator. However, a slow turn-off time will increase both the initial delay and rate-of-rise of the output voltage. 0 2 For technical support and more information, see inside back cover or visit www.ti.com 4 6 8 10 t (milli - secs) 12 14 16 18 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment. TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily performed. TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and applications using TI components. To minimize the risks associated with customer products and applications, customers should provide adequate design and operating safeguards. TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask work right, or other TI intellectual property right relating to any combination, machine, or process in which TI products or services are used. Information published by TI regarding third–party products or services does not constitute a license from TI to use such products or services or a warranty or endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual property of the third party, or a license from TI under the patents or other intellectual property of TI. Reproduction of information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an unfair and deceptive business practice. TI is not responsible or liable for such altered documentation. Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business practice. TI is not responsible or liable for any such statements. Following are URLs where you can obtain information on other Texas Instruments products & application solutions: Products Amplifiers Applications amplifier.ti.com Audio www.ti.com/audio Data Converters dataconverter.ti.com Automotive www.ti.com/automotive DSP dsp.ti.com Broadband www.ti.com/broadband Interface interface.ti.com Digital Control www.ti.com/digitalcontrol Logic logic.ti.com Military www.ti.com/military Power Mgmt power.ti.com Optical Networking www.ti.com/opticalnetwork Microcontrollers microcontroller.ti.com Security www.ti.com/security Telephony www.ti.com/telephony Video & Imaging www.ti.com/video Wireless www.ti.com/wireless Mailing Address: Texas Instruments Post Office Box 655303 Dallas, Texas 75265 Copyright 2003, Texas Instruments Incorporated