PT3660 Series
30-A Dual Output Isolated
DC/DC Converter
SLTS181 OCTOBER 2002
Specifications (Unless otherwise stated, Ta =25°C, Vin =48V, & Io1=Io2=10A)
PT3660 SERIES
Typ
Characteristics
Symbols
Conditions
Min
Max
Units
Output Current
Io1, Io2
Vo1
Vo1 ≤3.3V
Vo1 =5.0V
All voltages
Vo1 ≤3.3V
Vo1 =5.0V
0
0
0
0
0
—
—
—
—
—
15
10
15
30
25
A
A
A
Vo2
Io1+Io2
Total (both outputs)
Input Voltage Range
Set Point Voltage Tolerance
Temperature Variation
Line Regulation
Vin
Votol
∆Regtemp
∆Regline
∆Regload
36
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
48
1
0.5
5
2
2
2
2
75
2
—
10
10
10
10
5
V
%Vo
%Vo
mV
–40 to +100°C Case, Io1 =Io2 =0A
Over Vin range with Io1=Io2=5A
1A ≤Io1 ≤Io1max, Io2 =1A
1A ≤Io2 ≤Io1max, Io1 =1A
1A ≤Io2 ≤Io1max, Io1 =1A
1A ≤Io1 ≤Io1max, Io2 =1A
Includes set-point, line load,
–40°C to +100°C case
Load Regulation
∆Vo1
∆Vo2
∆Vo1
∆Vo2
∆Vo1
∆Vo2
PT3661
PT3662
PT3663
PT3665
PT3666
PT3667
PT3668
mV
mV
Cross Regulation
Total Output Variation
Efficiency
∆Regcross
∆Votol
η
2
2
3
3
%Vo
88
87
86
86
85
88
86
—
—
—
—
—
—
—
%
Vo Ripple (pk-pk)
V
r
Io1=Io2=5A, 20MHz bandwidth
Vo=5V
Vo<5V
—
—
—
—
75
50
mVpp
Transient Response
ttr
1A/µs load step from 50% to 100% Iomax
(either output)
—
—
25
100
—
µSec
%Vo
6.0
Current Limit
Output Rise Time
Output Over-Voltage Protection
Switching Frequency
Under-Voltage-Lockout
ILIM
ton
OVP
fs
Each output with other unloaded
At turn-on to within 90% of Vo
Either output; shutdown and latch off
15.5
—
—
280
—
30
18
5
125
—
34
32
—
10
—
320
36
—
A
mSec
%Vo
kHz
(1)
UVLO
Rising
Falling
V
Internal Input Capacitance
Cin
—
2
—
µF
On/Off Control
Input High Voltage
Input Low Voltage
Input Low Current
Referenced to –Vin
VIH
VIL
IIL
3.5
0
—
—
—
0.8
V
(2)
—
—
0
0.5
3
—
5
mA
mA
µF
Standby Current
Iin standby
Cout
Viso
C iso
Riso
Pins 2, 3, & 4 connected
Per each output
External Output Capacitance
Primary/Secondary Isolation
—
5,000
1500
—
—
—
—
—
V
1500
pF
MΩ
10
—
(3)
(3)
Temperature Sense
Vtemp
Output voltage at temperatures:-
–40°C
100°C
—
—
0.1
1.5
—
—
V
(4)
Operating Temperature Range
Over-Temperature Protection
Solder Reflow Temperature
Storage Temperature
Mechanical Shock
Mechanical Vibration
T
OTP
Treflow
Over Vin range
Case temperature (auto restart)
Surface temperature of module pins or case
—
–40
100
—
–40
—
—
—
—
—
500
85
—
°C
°C
°C
°C
G’s
a
(5)
215
125
—
T
s
—
—
Per Mil-STD-883D, Method 2002.3
Per Mil-STD-883D, Method 2007.2, Suffix N
(6)
(6)
—
—
10
—
—
G’s
20–2,000Hz
Suffixes A, C
20
Weight
Flammability
—
—
—
—
90
—
grams
Materials meet UL 94V-0
Notes: (1) This is a fixed parameter. Adjusting Vo1 or Vo2 higher will increase the module’s sensitivity to over-voltage detection. For more information, see the
application note on output voltage adjustment.
(2) The EN1 and EN2 control inputs (pins 3 & 4) have internal pull-ups and may be controlled with an open-collector (or open-drain) transistor. Both
inputs are diode protected and can be connected to +Vin. The maximum open-circuit voltage is 5.4V.
(3) Voltage output at “TEMP” pin is defined by the equation:- VTEMP = 0.5 + 0.01·T, where T is in °C. See pin descriptions for more information.
(4) See SOA curves or consult the factory for the appropriate derating.
(5) During solder reflow of SMD package version do not elevate the module case, pins, or internal component temperatures above a peak of 215°C. For
further guidance refer to the application note, “Reflow Soldering Requirements for Plug-in Power Surface Mount Products,” (SLTA051).
(6) The case pins on the through-holed package types (suffixes 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
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