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PT4303 PDF预览

PT4303

更新时间: 2024-11-07 02:58:35
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德州仪器 - TI /
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描述
3-7 Watt 48V-Input Isolated DC/DC Converter

PT4303 数据手册

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PT42/4300 Series  
3-7Watt48V-Input  
Isolated DC/DC Converter  
SLTS023B  
(Revised 1/3/2002)  
Wide Input Voltage Range: 38V to 72V high switching frequencies, thick-film technol-  
83% Efficiency  
ogy and a high degree of silicon integration.  
The high reliability and very low package  
height makes these converters ideal for  
Telecom and Datacom applications requiring  
input-to-output isolation with board spacing  
down to 0.6”.  
The PT4200 series is offered in a unique  
molded through-hole or SMD-DIP package  
with single output voltages of 2V, 3.3V, 5V,  
and 12V, dual outputs of 5V, +5V/+3.3V, and  
12V.  
1,500 VDC Isolation  
18 Pin DIP Package  
3.5 Million Hour MTBF  
Meets FCC/EN55022 Class A  
UL and CSA approved  
No External Components Required  
Adjustable Output Voltage  
The PT4200 series of isolated DC/DC  
converters advance the state-of-the-art for  
board-mounted converters by employing  
Pin-Out Information  
Package (Top View)  
Pin Function  
+Vout1  
-Vout  
+Vout2 or NC  
1
2
3
4
5
6
7
8
9
18  
17  
16  
15  
14  
13  
12  
11  
10  
+Vin  
-Vin  
1
2
Vout1  
Vout return  
NC  
NC  
3
Vout2 or N/C  
Do not connect  
Do not connect  
Do not connect  
Do not connect  
Vadj  
Vadj  
NOR  
RC  
TOA  
4
PT42/4300  
5
Specifications  
6
PT42/4300 SERIES  
Characteristics  
(Ta = 25°C unless noted)  
7
Symbols  
Conditions  
Min  
Typ  
Max  
Units  
8*  
9*  
Output Current  
Io  
Over Vin range  
Vo = 2V, 3.3V  
Vo = 5V  
0
0
0
1.5  
1.2  
0.6  
A
A
A
Nominal output  
voltage resistor  
Vo = 12V  
10  
Turn-on/offinput  
voltage adjust  
Current Limit  
Icl  
Vin = 48V  
Vo = 2V  
Vo = 3.3V  
Vo = 5V  
Vo = 12V  
2.0  
1.7  
1.4  
0.7  
3.3  
3.3  
2.4  
1.2  
A
A
A
A
11  
12  
13  
14  
15  
16  
17  
18  
Remote on/off  
Do not connect  
Do not connect  
Do not connect  
Do not connect  
Do not connect  
-Vin  
On/Off Standby Current  
Short Circuit Current  
Iin standby  
Isc  
Vin = 48V, Pin 11 = -Vin  
0.5  
mA  
Vin = 48V  
Vo = 2V  
2.8  
2.4  
1.9  
1.2  
A
A
A
A
Vo = 3.3V  
Vo = 5V  
Vo = 12V  
Inrush Current  
Iir  
tir  
Vin = 48V @ max Io  
On start-up  
0.6  
1.0  
1.0  
5.0  
A
mSec  
(1)  
Input Voltage Range  
Vin  
Over Io Range  
Over Io Range  
Io = 0A  
38  
48  
4
72  
V
+Vin  
Output Voltage Tolerance Vo  
%Vo  
* Please note that when the Vout  
adjust is not used, pin 8 must be  
connected to pin 9.  
Idling Voltage  
Vo  
Vo = 2V  
Vo = 3.3V  
Vo = 5V  
Vo = 12V  
2.7  
3.0  
4.0  
6.0  
17  
V
V
V
V
3.65  
5.6  
14.3  
Ordering Information  
Through-Hole  
PT 4201A = 2V/1.5A  
PT 4202A = 3.3V/1.5A  
PT 4203A = 5V/1.2A  
PT 4204A = 12V/0.6A  
PT 4301A = 5V/1A  
Ripple Rejection  
Line Regulation  
Load Regulation  
Vo Ripple/Noise  
Transient Response  
RR  
Over Vin range @ 120 Hz  
Over Vin range @ max Io  
10% to 100% of Io max  
Vin= 48V, Io=Io max  
60  
0.5  
3
70  
dB  
Regline  
Regload  
Vn  
%Vo  
%Vo  
mVpp  
30  
ttr  
50% load change  
100  
3.0  
300  
5.0  
µSec  
%Vo  
Vo over/undershoot  
Efficiency  
η
Vin=48V, Io=1.5A, Vo=2V  
Vin=48V, Io=1.5A, Vo=3.3V  
Vin=48V, Io=1.2A, Vo=5V  
Vin=48V, Io=0.6A, Vo=12V  
73  
79  
80  
83  
%
%
%
%
PT 4302A = +5.2V/1A,  
+3.3V/1A  
PT 4303A = 12V/0.25A  
Surface Mount  
Switching Frequency  
ƒo  
Over Vin and Io  
485  
kHz  
PT 4201C = 2V/1.5A  
PT 4202C = 3.3V/1.5A  
PT 4203C = 5V/1.2A  
PT 4204C = 12V/0.6A  
PT 4301C = 5V/1A  
Operating Temperature  
Ta  
Vin = 48V @ max Io  
-40  
+85  
°C  
Free air convection, (40-60LFM)  
Pin Temperature  
Storage Temperature  
Mechanical Shock  
Tp  
Ts  
@ Pin1  
95  
°C  
°C  
-55  
+125  
Per Mil-STD-202F, Method 213B,  
6mS half-sine, mounted to a PCB  
50  
10  
Gs  
Gs  
PT 4302C = +5.2V/1A,  
+3.3V/1A  
Mechanical Vibration  
Per Mil-STD-202F, Method 204D,  
10-500Hz, mounted to a PCB  
PT 4303C = 12V/0.25A  
Weight  
20  
grams  
VDC  
(For dimensions and PC  
board layout, see Package  
Style 900.)  
Isolation  
1500  
Flammability  
Materials meet UL 94V-0  
Notes: (1) The minimum input voltage is adjustable. See the specific application note on the PT4200/4205/4300 Series.  
For technical support and more information, see inside back cover or visit www.ti.com  

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