TI PT6651

For assistance or to order, call
(800) 531-5782
Revised 2/5/99
PT6650
Series
•
•
•
•
•
•
Single Device: 5A Output
Input Voltage Range: 9V to 28V
Adjustable Output Voltage
80% Efficiency
Remote Sense Capability
Standby Function
(ISRs). Designed for general purpose
industrial applications requiring as
much as 5A of output current, the
PT6650 is packaged in a 14-Pin SIP
(Single In-line Package) and is available
in a surface-mount configuration.
Only two external capacitors are
required for proper operation. Please
note that this product does not include
short circuit protection.
The PT6650 series is a new addition to Power Trends’ line of 24V bus
Integrated Switching Regulators
Pin-Out Information
Standard Application
REMOTE SENSE
1
VIN
4,5,6
PT6650
VOUT
11,12,13
3
C1
7,8,9,10
+
STBY
C2
+
LOAD
Q1
COM
COM
C1 = Required 100µF electrolytic
C2 = Required 330µF electrolytic
Q1 = NFET-or Open Collector Gate
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Application Notes
Mechanical Outline
Product Selector Guide
5 AMP 24V INPUT
INTEGRATED SWITCHING REGULATOR
Remote Sense
Do Not Connect
STBY*- Standby
Vin
Vin
Vin
GND
GND
GND
GND
Vout
Vout
Vout
Vout Adjust
Ordering Information
PT Series Suffix (PT1234X)
PT6651¨
PT6652¨
PT6653¨
PT6654¨
PT6655¨
PT6656¨
Case/Pin
Configuration
= +3.3 Volts
= +2.5 Volts
= +5.0 Volts
= +9.0 Volts
= +15.0 Volts
= +12.0 Volts
Heat
Heat Spreader
Spreader with Side Tabs
Vertical Through-Hole
P
R
G
B
Horizontal Through-Hole D
Horizontal Surface Mount E
Pkg Style 400
Note: Back surface
of product is
conducting metal
Specifications
PT6650 SERIES
Characteristics
(Ta = 25°C unless noted)
Symbols
Conditions
Min
Typ
Max
Units
Output Current
Io
Ta = 60°C, 200 LFM, pkg P
Ta = 25°C, natural convection
0.1*
0.1*
—
—
5.0**
5.0**
A
A
Input Voltage Range
Vin
0.1A ≤ Io ≤ 5.0A
+9V
Vo+3
—
—
+28V
+28V
V
V
Output Voltage Tolerance
∆Vo
Over Vin range
Ta = -40°C to +65°C
Vo-0.1
—
Vo+0.1
V
Output Voltage Adjust Range
Voadj
Pin 14 to Vo or ground
2.2
1.8
3.0
6.0
9.0
10.0
—
—
—
—
—
—
4.7
4.3
6.5
10.2
13.6
17.0
V
%Vo
Vo < +6V
Vo > +6V
Vo
Vo
Vo
Vo
Vo
Vo
= +3.3V
= +2.5V
= +5.0V
= +9.0V
= +12V
= +15V
Line Regulation
Regline
+9V≤V in≤+28V, Io = 5.0A
—
±0.5
±1.0
Load Regulation
Regload
Vin = +24V, 0.1≤ Io≤5.0A
—
±0.5
±1.0
%Vo
Vo Ripple/Noise
Vn
Vin = +24V, Io = 5.0A
—
50
1.0
—
mVpp
%Vo
Transient Response
with C2 = 330µF
t tr
Vos
Io step between 2.5A and 5.0A
Vo over/undershoot
—
—
100
100
—
—
µSec
mV
Efficiency
η
Vo < +6V
Vo > +6V
Vin = +24V, Io = 0.5x I o max
Vo = +3.3V
Vo = +2.5V
Vo = +5.0V
—
—
—
81
76
85
—
—
—
%
%
%
Vin = +24V, Io = Io max
Vo = +3.3V
Vo = +2.5V
Vo = +5.0V
—
—
—
80
75
84
—
—
—
%
%
%
500
550
600
kHz
Switching Frequency
ƒo
9V ≤ V in ≤ 28V
Over Io range
Recommended Operating
Temperature Range
Ta
Free Air Convection (40-60 LFM)
Over Vin and Io ranges with heat tab
-40
—
+65
°C
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
* ISR will operate down to no load with reduced specifications. ** See SOA curves.
Note: The PT6650 Series requires a 330µF(output) and 100µF(input) electrolytic capacitors for proper operation in all applications.
54
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.powertrends.com
CHARACTERISTIC
For assistance or to order, call
(800) 531-5782
PT6650
Series
DATA
PT6651P, 3.3V
90
90
80
80
PT6651
PT6652
PT6653
70
PT6654
PT6655
PT6656
60
50
Ambient Temperature (°C)
Efficiency (%)
Efficiency vs Output Current
100
70
Recommended Maximum
Operating Temperature
60
Nat conv
60LFM
120LFM
50
200LFM
40
30
40
20
0
1
2
3
4
5
0
1
Output Current (A)
2
3
4
5
6
Output Current (A)
PT6652P, 2.5V
Ripple vs Output Current
120
90
100
80
80
PT6651
PT6652
PT6653
60
PT6654
PT6655
PT6656
40
20
Ambient Temperature (°C)
Ripple (mVpp)
Airflow
70
Recommended Maximum
Operating Temperature
60
Airflow
Nat conv
60LFM
120LFM
50
200LFM
40
30
0
20
0
1
2
3
4
0
5
1
Output Current (A)
2
3
4
5
6
Output Current (A)
PT6653P, 5.0V
Power Dissipation vs Output Current
5
90
Pd (Watts)
PT6651
PT6652
3
PT6653
PT6654
PT6655
2
PT6656
1
Ambient Temperature (°C)
80
4
70
Recommended Maximum
Operating Temperature
60
Airflow
Nat conv
60LFM
120LFM
50
200LFM
40
30
20
0
0
1
2
3
Output Current (A)
4
5
0
1
2
3
4
5
6
Output Current (A)
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.powertrends.com
55
DATA SHEETS
Safe Operating Area Curves @V
in=+24V
@Vin=+24V
24V
24V Bus
Bus Products
Products
PT6650 Series @V
in=+24V
@Vin=+24V
For assistance or to order, call
Application
(800) 531-5782
Notes
PT6650 Series
More Application Notes
Adjusting the Output Voltage of the
PT6650 5Amp 24V Bus Converter Series
Figure 1
The output voltage of the Power Trends PT6650 Series ISRs
may be adjusted higher or lower than the factory trimmed preset 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).
Adjust Up:
An increase in the output voltage is obtained by
adding a resistor R2, between pin 14 (Vo adjust) and pins 7-10
(GND).
Adjust Down: Add a resistor (R1), between pin 14 (Vo adjust)
and pins 11-13 (Vout).
1
Vsense
4,5,6
Vin
PT6650
Vin
GND
STBY
7,8,9,10
3
C in
100 µF
11,12,13
Vo
Vo
Vo(adj)
14
(R1)
Adj Down
+
C out
330 µF
+
L
O
A
D
R2
Adjust Up
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% resistorin 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 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 pin 14 (Vo adjust) and pin 1 (Remote
Sense) can benefit load regulation.
4. The minimum input voltage required by the part is Vout + 3,
or 9V, whichever is higher.
5. For output voltages above 12.5Vdc, the maximum output
current must be limited to 4Adc.
The values of (R1) [adjust down], and R2 [adjust up], can
also be calculated using the following formulae.
(R1)
=
Ro (Vo – 1.25)(Va – 1.25)
1.25 (Vo – Va)
R2
=
Ro (Vo – 1.25)
Va - Vo
Where: Vo
Va
Ro
Rs
– Rs
– Rs
kΩ
kΩ
= Original output voltage
= Adjusted output voltage
= The resistance value in Table 1
= The series resistance from Table 1
Table 1
PT6650 ADJUSTMENT AND FORMULA PARAMETERS
Series Pt #
PT6652
PT6651
PT6653
PT6654
PT6656
PT6655
Vo (nom)
2.5V
3.3V
5.0V
9.0V
12.0V
15.0V
Va (min)
1.8V
2.2V
3.0V
6.0V
9.0V
10.0V
Va (max)
4.3V
4.7V
6.5V
10.2V
13.6V
17.0V
Ω)
Ro (kΩ
4.99
4.22
2.49
2.0
2.0
2.0
Ω)
Rs (kΩ
2.49
4.99
4.99
12.7
12.7
12.7
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.powertrends.com
3
For assistance or to order, call
(800) 531-5782
Application
PT6650 Series
Notes
Table 2
PT6650 ADJUSTMENT RESISTOR VALUES
Series Pt #
Current
Vo (nom)
Va (req’d)
PT6652
5Adc
2.5Vdc
PT6651
5Adc
3.3Vdc
PT6653
5Adc
5.0Vdc
PT6654
5Adc
9.0Vdc
1.8
(1.4)kΩ
6.0
1.9
(2.9)kΩ
6.2
(9.2)kΩ
2.0
(5.0)kΩ
6.4
(11.9)kΩ
PT6656
5Adc
12.0Vdc
PT6655
4Adc
15.0Vdc
(6.9)kΩ
2.1
(8.1)kΩ
6.6
(14.0)kΩ
2.2
(13.3)kΩ
(1.0)kΩ
6.8
(18.6)kΩ
2.3
(23.7)kΩ
(2.3)kΩ
7.0
(23.0)kΩ
2.4
(54.9)kΩ
(3.9)kΩ
7.2
(28.3)kΩ
(5.8)kΩ
7.4
(35.0)kΩ
2.5
2.6
59.9kΩ
(8.4)kΩ
7.6
(43.5)kΩ
2.7
28.7kΩ
(11.7)kΩ
7.8
(55.0)kΩ
2.8
18.3kΩ
(16.5)kΩ
8.0
(71.0)kΩ
2.9
13.1kΩ
(23.6)kΩ
8.2
(95.0)kΩ
3.0
10.0kΩ
(35.4)kΩ
(1.6)kΩ
8.4
(135.0)kΩ
3.1
7.9kΩ
(59.0)kΩ
(2.3)kΩ
8.6
(215.0)kΩ
3.2
6.4kΩ
(130.0)kΩ
(3.1)kΩ
8.8
(455.0)kΩ
3.3
5.3kΩ
(4.0)kΩ
9.0
3.4
4.4kΩ
81.5kΩ
(5.1)kΩ
9.2
64.8kΩ
(36.1)kΩ
3.5
3.8kΩ
38.3kΩ
(6.2)kΩ
9.4
26.1kΩ
(41.2)kΩ
3.6
3.2kΩ
23.8kΩ
(7.6)kΩ
9.6
13.1kΩ
(47.1)kΩ
3.7
2.7kΩ
16.6kΩ
(9.1)kΩ
9.8
6.7kΩ
(54.1)kΩ
3.8
2.3kΩ
12.3kΩ
(10.9)kΩ
10.0
2.8kΩ
(62.6)kΩ
(25.8)kΩ
3.9
2.0kΩ
9.4kΩ
(13.0)kΩ
10.2
0.2kΩ
(72.8)kΩ
(28.3)kΩ
4.0
1.7kΩ
7.4kΩ
(15.6)kΩ
10.4
(85.7)kΩ
(31.1)kΩ
4.1
1.4kΩ
5.8kΩ
(18.7)kΩ
10.6
(102.0)kΩ
(34.1)kΩ
4.2
1.2kΩ
4.6kΩ
(22.6)kΩ
10.8
(124.0)kΩ
(37.3)kΩ
4.3
1.0kΩ
3.7kΩ
(27.6)kΩ
11.0
(155.0)kΩ
(40.9)kΩ
4.4
2.9kΩ
(34.2)kΩ
11.2
(201.0)kΩ
(44.9)kΩ
4.5
2.2kΩ
(43.6)kΩ
11.4
(278.0)kΩ
(49.3)kΩ
4.6
1.7kΩ
(57.6)kΩ
11.6
(432.0)kΩ
(54.3)kΩ
4.7
1.2kΩ
(80.9)kΩ
11.8
(895.0)kΩ
4.8
(128.0)kΩ
12.0
4.9
(268.0)kΩ
12.2
94.8kΩ
(73.3)kΩ
12.4
41.1kΩ
(81.6)kΩ
5.0
(31.7)kΩ
(59.8)kΩ
(66.1)kΩ
5.1
88.4kΩ
12.6
23.1kΩ
(91.3)kΩ
5.2
41.7kΩ
12.8
14.2kΩ
(103.0)kΩ
5.3
26.1kΩ
13.0
8.8kΩ
(117.0)kΩ
5.4
18.4kΩ
13.2
5.2kΩ
(133.0)kΩ
5.5
13.7kΩ
13.4
2.7kΩ
(154.0)kΩ
5.6
10.6kΩ
13.6
0.7kΩ
5.7
8.4kΩ
13.8
(217.0)kΩ
5.8
6.7kΩ
14.0
(268.0)kΩ
5.9
5.4kΩ
14.2
(343.0)kΩ
6.0
4.4kΩ
14.5
(570.0)kΩ
6.1
3.5kΩ
15.0
6.2
2.8kΩ
15.5
42.3kΩ
6.3
2.2kΩ
16.0
14.8kΩ
6.4
1.7kΩ
16.5
5.6kΩ
6.5
1.2kΩ
17.0
1.1kΩ
R1 = (Red)
4
Series Pt #
Current
Vo (nom)
Va (req’d)
(181.0)kΩ
R2 = Black
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.powertrends.com
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