SLTS092B Datasheet, PDF (2/9 Pages) Texas Instruments – 20-W 48-V Input Isolated DC/DC Converter

PT4120 Series
20-W 48-V Input Isolated
DC/DC Converter
Specifications (Unless otherwise stated, Ta =25°C, Vin =48V, Cout =0µF, and Io =Iomax)
Characteristic
Symbol
Conditions
PT4120 SERIES
Min
Typ
Max
Units
Output Current
Input Voltage Range
Set Point Voltage Tolerance
Temperature Variation
Line Regulation
Load Regulation
Total Output Voltage Variation
Efficiency
Vo Ripple (pk-pk)
Transient Response
Short Circuit Current
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
Isolation Voltage
Capacitance
Resistance
Operating Temperature Range
Storage Temperature
Reliability
Mechanical Shock
Mechanical Vibration
Weight
Flammability
I_o
V_in
Vo tol
Regtemp
Reg_line
Reg_load
∆V_otot
η
Vr
ttr
∆Vtr
Isc
ƒs
UVLO
VIH
VIL
IIL
Iin standby
C_in
Cout
Ta
Ts
MTBF
—
—
—
—
Over V_in range
V_o = 15V
Vo = 12V
Vo =5.0V
Vo ≤ 3.3V
Over I_o Range
Vo ≥5.0V
V_o ≤3.3V
–40° ≤Ta ≤ +85°C
Over V_in range
V_o ≥5.0V
Vo ≤3.3V
Over I_o range
Vo ≥5.0V
Vo ≤3.3V
Includes set-point, line load,
V_o ≥5.0V
–40° ≤Ta ≤ +85°C
Vo ≤3.3V
V_o = 15V
Vo = 12V
Vo =5.0V
Vo =3.3V
Vo =1.8V
20MHz bandwidth
Vo ≥ 5.0V
Vo ≤ 3.3V
0.1A/µs, load step 50% to 100% Iomax
Vo over/undershoot
Vo ≥ 5.0V
Vo ≤ 3.3V
Over Vin range
Vo ≥ 12.0V
Vo ≤ 5.2V
Referenced to –Vin (pin 2)
pins 1 & 2 connected
Between +Vo and –Vo
Input to output
Over Vin range
—
Per Bellcore TR-332
50% stress, T_a =40°C, ground benign
Per Mil-Std-883D, method 2002.3,
1mS, half-sine, mounted to a fixture
Per Mil-Std-883D, method 2007.2,
20-2000Hz, soldered in a PC board
—
Materials meet UL 94V-0
0.1 (1)
0.1 ⁽¹⁾
0.1 (1)
0.1 (1)
36.0
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
600
800
—
2.5
–0.2
—
—
—
0
1500
—
10
-40
-40
4.0
—
—
—
—
—
—
—
48.0
±1
—
±0.5
±0.2
±7
±0.4
±13
±2
±67
86
83
82
78
67
0.5
15
100
±3.0
±150
2xIomax
650
850
31
—
—
–10
7
0.5
—
—
1100
—
—
—
—
500
15
23
1.3
1.6
4.0
5.0
75.0
±1.5
±50
—
±1.0
±33
±1.0
±33
—
—
—
—
—
—
—
—
—
—
—
—
—
700
900
—
7.0 (2)
+0.8
–
50
—
200
—
—
—
+85 (3)
+125
—
—
—
—
A
VDC
%Vo
mV
%Vo
%V_o
mV
%V_o
mV
%V_o
mV
%
%Vo
mVpp
µs
%Vo
mV
A
kHz
V
V
µA
mA
µF
µF
V
pF
MΩ
°C
°C
106 Hrs
G’s
G’s
grams
Notes: (1) The DC/DC converter will operate at no load with reduced specifications.
(2) The Remote On/Off (pin 1) has an internal pull-up, and if it is left open circuit the PT4120 will operate when input power is applied. Refer to the
application notes for interface considerations.
(3) See Safe Operating Area curves or contact the factory for the appropriate derating.
For technical support and more information, see inside back cover or visit www.ti.com