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PT6715 Series
13 Amp 5V/3.3V Input Adjustable Integrated Switching Regulator
SLTS100
(Revised 6/30/2000)
e g Packag ace-Savin New Sp
* * * * * * * *
+3.3V/5V Input Voltage Adjustable Output Voltage 90% Efficiency Standby Differential Remote Sense 17-Pin Space-Saving Package Solderable Copper Case Short Circuit Protection
The PT6715 is a series of high-performance, 13A Integrated Switching Regulators (ISRs) housed in a unique, space-saving 17-pin package. The PT6715 will operate off either a 5V or 3.3V power bus to provide a low-voltage power source for the industry's latest high-speed, DSPs, Ps, and bus drivers. Features include a Standby function, a differential remote sense, and short circuit protection.
Patent pending on package assembly
Standard Application
STBY* Vout Adjust
REMOTE SENSE (+)
2 1 17
Pin-Out Information
Pin Function
1 2 3 4 5 6 7 8 9 V out adjust STBY* Do not connect V in V in V in
Remote Sense Gnd
(4)
Pin Function
10 11 12 13 14 15 16 17 GND GND GND V out V out V out V out
Remote Sense Vout
VIN
L1
4-6
1H +
PT6715
8 - 12 7
13 - 16
VOUT
CIN
COUT
REMOTE SENSE (-)
+
LOAD
GND GND
GND
GND
Cin = Required 1000F electrolytic Cout= Required 330F electrolytic L1 = Optional 1H input choke
For STBY* pin open = output enabled ground = output disabled.
Specifications
Characteristics (Ta = 25C unless noted) Output Current Input Voltage Range Output Voltage T olerance Short-Circuit Threshold Line Regulation Load Regulation Vo Ripple/Noise Transient Response with Cout = 330F Efficiency
PT6715 SERIES
Symbols Io Vin Vo Isc Regline Regload Vn ttr Vos Conditions Ta = +60C, 200 LFM, pkg N, Ta = +25C, natural convection 0.1A Io 13A Vin = +5V, Io = 13A -40C Ta +85C Vin = +5V 4.5V Vin 5.5V, Io = 13A Vin = +5V, 0.1 Io 13A Vin = +5V, Io = 13A Io step between 6.5A and 13A Vo over/undershoot Vin = +5V, Io = 9A Vo Vo Vo Vo = 3.3V = 2.5V = 1.8V = 1.5V PT6715/6 PT6717/8 Min 0.1 (1) 0.1 (1) 4.5 3.1 Vo-0.03 -- -- -- -- -- -- -- -- -- -- 300 -40 (2) -40 -- -- -- Typ -- -- -- -- -- 18 5 10 35 50 100 91 88 85 83 350 -- -- 500 15 26 Max 13.0 13.0 5.5 5.5 Vo+0.03 30 -- -- -- -- -- -- -- -- -- 400 +85 (3) +125 -- -- -- Units A V V A mV mV mV Sec mV % kHz C C G's G's grams
Switching Frequency Absolute Maximum Operating T emperature Range Storage T emperature Mechanical Shock Mechanical Vibration Weight
o Ta Ts
4.5V Vin 5.5V 0.1A Io 13A Over Vin Range -- Per Mil-STD-883D, Method 2002.3 1ms half sine, mounted to a fixture Per Mil-STD-883D, Method2007.2, 20-2000Hz, Soldered in a PC board
--
--
Notes: (1) ISR-will operate down to no load with reduced specifications. (2) For operationo below 0C, Cin and Cout must have stable characteristics. Use either low ESR tantalum or Oscon(R) capacitors. (3) See Safe Operating Area curves or contact the factory for the appropriate derating. (4) If the remote sense ground is not used, pin 7 must be connected to pin 8 for optimum output voltage accuracy. Output Capacitors: The PT6715 requires a minimum ouput capacitance of 330F for proper operation. The maximum allowable output capacitance is 15,000F. Input Filter: An input filter is optional for most applications. The input inductor must be sized to handle 10ADC with a typical value of 1H. The input capacitance must be rated for a minimum of 2.0Arms of ripple current. For transient or dynamic load applications, additional capacitance may be required. For technical support and more information, see inside back cover or visit www.ti.com/powertrends
PT6715 Series
13 Amp 5V/3.3V Input Adjustable Integrated Switching Regulator
Ordering Information
PT6715J = 3.3 Volts J PT6716J = 2.5 Volts J PT6717J = 1.8 Volts J PT6718J = 1.5 Volts J
PT Series Suffix (PT1234X)
Case/Pin Configuration Vertical Through-Hole N Horizontal Through-Hole A Horizontal Surface Mount C (For dimensions and PC board layout, see Package Styles 1340 and 1350.)
PT6700 Product Family
Input Voltage PT6701 PT6702 PT6705 PT6715 PT6721 PT6725 5V 3.3V 5V 5V 12V 12V Vout Adjust VID VID Resistor Resistor VID Resistor OVP/ Pwr Good Requires +12V Bias
TYPICAL All Models, Vin =5.0V
Efficiency vs Output Current
100 95 90
CHARACTERISTICS PT6717, PT6718, Vin =3.3V
Efficiency vs Output Current
100 95 90
(Note A)
(Note A)
Efficiency - %
Efficiency - %
Vout
85 80 75 70 65 60 0 2 4 6 8 10 12 14
3.3V 2.5V 1.8V 1.5V
85 80 75 70 65 60 0 2 4 6 8 10 12 14
Vout 1.8V 1.5V
Iout (A)
Iout (A)
Power Dissipation vs Output Current
6
Power Dissipation vs Output Current
6
5
5
4
4
Pd - Watts
3
3.3V 1.5V
Pd - Watts
Vout
Vout
3
1.8V 1.5V
2
2
1
1
0 0 2 4 6 8 10 12 14
0 0 2 4 6 8 10 12 14
Iout (A)
Iout (A)
Safe Operating Area, PT6715, Vin =5.0V
90.0 80.0
(Note B)
Safe Operating Area, PT6717, Vin =3.3V
90.0 80.0
(Note B)
Ambient Temperature ( C)
70.0 60.0 50.0 40.0 30.0 20.0 0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0
Ambient Temperature ( C)
Airflow 200LFM 120LFM 60LFM Nat conv
70.0 60.0 50.0 40.0 30.0 20.0 0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0
Airflow 200LFM 120LFM 60LFM Nat conv
Iout (A)
Iout (A)
Note A: All data in the above graphs has been developed from actual products tested at 25C. This data is considered typcial for the ISR. 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/powertrends
Application Notes
PT6705/6715 Series
Adjusting the Output Voltage of the PT6705 and PT6715 ExcaliburTM Converters
Both the PT6705 and PT6715 series ISRs are non-programmable versions of the PT6700 ExcaliburTM family of converters. These regulators have a fixed output voltage, which may be adjusted higher or lower than the factory trimmed pre-set voltage using a single external resistor. T able 1 gives the allowable adjustment range for each model as Va (min) and Va (max). Adjust Up: An increase in the output voltage is obtained by adding a resistor R2, between pin 1 (Vo adjust) and pin 7 (-Remote Sense). Adjust Down: Add a resistor (R1), between pin 1 (Vo adjust) and pin 17 (+Remote Sense). Refer to Figure 1 and T able 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. 2. Never connect capacitors from Vo adjust to either GND, Vout, or the Remote Sense pins. Any capacitance added to the Vo adjust pin will affect the stability of the ISR. 3. If the Remote Sense feature is not being used, pin 7 must be connected to pin 8 for optimum output voltage accuracy. Correspondingly the resistors (R1) and R2 may be then be connected from Vo Adjust to either Vout or GND respectively. 4. The PT6705 series requires a 12V external bias voltage in order to operate (see data sheet). An external bias voltage is not required for the PT6715 series. 5. Adjusting the output voltage of the PT6705 and PT6715 (3.3V models) higher than the factory pretrimmed output voltage may require an increase in the minimum input voltage. These two models must comply with the following requirements for Vin(min). PT670x models: = (Va + 1)V Vin(min) PT671x models: Vin(min) = (Va + 1)V or 4.5V, whichever is greater.
Figure 1
Bias
(Req'd for PT6705)
2 Stby* 3 V Bias 17 Sns(+) 13 16
+5V
4,5,6
V in
PT6705/PT6715
GND 8 12 Vo(adj) 1 Sns(-) 7
V out
Vo
(R1) Adj Down
+
+
C in R2 Adjust Up
C out
L O A D
COM
COM
The values of (R1) [adjust down], and R2 [adjust up], can also be calculated using the following formulas. 10(Va - 1.27) (Vo - Va)
(R1)
=
- Rs
k
R2
=
12.7 Va - Vo
- Rs
k
Where: Vo Va Rs
= Original output voltage = Adjusted output voltage = Series resistance value from T able 1
Table 1 PT6705/PT6715 SERIES ADJUSTMENT PARAMETERS
Series Pt # 12V Bias (4) No-Bias Vo (nom) Va (min) Va (max) Rs (k) PT6708 PT6718 1.5 1.47 1.73 49.9 PT6707 PT6717 1.8 1.75 2.0 49.9 PT6706 PT6716 2.5 2.25 2.85 33.2 PT6705 PT6715 3.3 2.75 3.75 24.9
For technical support and more information, see inside back cover or visit www.ti.com/powertrends
Application Notes continued
PT6705/6715 Series
Table 2 PT6705/PT6715 SERIES ADJUSTMENT RESISTOR VALUES
Series Pt # 12V Bias 4 No Bias Vo (nom) Va (req'd) 1.47 1.5 1.55 1.6 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 2.8 2.85 2.9 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 3.7 3.75 R1 = (Blue) R2 = Black Requires Vin > 4.5Vdc 5 229.0k 102.0k 59.8k 38.6k 25.9k 17.4k 11.4k 6.9k 3.3k 221.0k 93.8k 51.5k 30.3k 17.6k 9.1k 3.1k (2.0)k (5.7)k (10.2)k (15.9)k (23.1)k (32.8)k (46.3)k (66.6)k (100.0)k (168.0)k (371.0)k (6.0)k (18.3)k (38.8)k (79.8)k (203.0)k 204.0k 77.1k 34.8k 13.6k 204.0k 77.1k 34.8k 13.6k (46.1)k PT6708 PT6718 1.5 (16.8)k PT6707 PT6717 1.8 PT6706 PT6716 2.5 PT6705 PT6715 3.3
For technical support and more information, see inside back cover or visit www.ti.com/powertrends
Package S tyle 1340
S uffix N
(Revised 6/30/2000)
PACKAGE INFORMATION AND DIMENSIONS
Power Trends proprietary package design. All rights reserved. Patent pending.
For technical support and more information, see inside back cover or visit www.ti.com/powertrends
Package S tyle 1350
S uffix A, C
(Revised 6/30/2000)
PACKAGE INFORMATION AND DIMENSIONS
Power Trends proprietary package design. All rights reserved. Patent pending.
For technical support and more information, see inside back cover or visit www.ti.com/powertrends
IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those pertaining to warranty, patent infringement, and limitation of liability. TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with TI's standard warranty. Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements. Customers are responsible for their applications using TI components. In order to minimize risks associated with the customer's applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards. TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right of TI covering or relating to any combination, machine, or process in which such semiconductor products or services might be or are used. TI's publication of information regarding any third party's products or services does not constitute TI's approval, warranty or endorsement thereof.
Copyright (c) 2000, Texas Instruments Incorporated

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