参数资料
型号: PT4528N
厂商: TEXAS INSTRUMENTS INC
元件分类: 电源模块
英文描述: 1-OUTPUT 12.5 W DC-DC REG PWR SUPPLY MODULE
文件页数: 3/10页
文件大小: 211K
代理商: PT4528N
For technical support and more information, see inside back cover or visit www.ti.com
PT4520 Series
20-W 48-V Input Isolated
DC/DC Converter
Specifications (Unless otherwise stated, Ta =25°C, Vin =48V, Cout =0F, and Io =Iomax)
PT4520 SERIES
Characteristic
Symbol
Conditions
Min
Typ
Max
Units
Output Current
Io
Over Vin range
Vo = 15V
0.1 (1)
1.3
Vo = 12V
0.1 (1)
1.6
A
Vo =5.0V
0.1 (1)
—4
Vo ≤ 3.3V
0.1 (1)
—5
Input Voltage Range
Vin
Over Io Range
36
48
75
VDC
Set-Point Voltage Tolerance
Vo tol
±1
±1.5 (2)
%Vo
Temperature Variation
Regtemp
–40°
≤Ta≤ +85°C, Io =Iomin
±0.5
%Vo
Line Regulation
Regline
Over Vin range
±0.2
±1
%Vo
Load Regulation
Regload
Over Io range
±0.4
±1
(2)
%Vo
Total Output Voltage Variation
Votot
Includes set-point, line, load,
—±2
±3
(2)
%Vo
–40°
≤Ta ≤ +85°C
Efficiency
η
Vo = 15V
86
Vo = 12V
83
Vo =5.0V
82
Vo =3.3V
78
%
Vo =1.8V
67
Vo =1.5V
65
Vo =1.2V
59
Vo Ripple (pk-pk)
Vr
20MHz bandwidth
Vo ≥ 5.0V
0.5
%Vo
Vo ≤ 3.3V
15
mVpp
Transient Response
ttr
0.1A/s load step, 50% to 100% Iomax
100
s
Vtr
Vo over/undershoot
Vo ≥ 5.0V
±3
%Vo
Vo ≤ 3.3V
±150
mV
Current Limit Threshold
Ilim
Vin =36V, Vo = –50mV
200
%Iomax
Output Voltage Adjust
Vo adj
±10
%
Switching Frequency
s
Over Vin range
Vo≥ 5.0V
600
650
700
kHz
Vo ≤ 3.3V
800
850
900
Under-Voltage Lockout
UVLO
31
V
Remote On/Off (Pin 1)
Referenced to –Vin (pin 2)
High-Level Input Voltage
VIH
2.5
Open (3)
V
Low-Level Input Voltage
VIL
–0.2
0.8
Low-Level Input Current
IIL
–10
A
Standby Input Current
Iin standby
pins 1 & 2 connected
7
10
mA
Internal Input Capacitance
Cin
0.5
F
External Output Capacitance
Cout
0
220 (4)
F
Isolation Voltage
Input–output/input–case
1500
V
Capacitance
Input to output
1100
pF
Resistance
Input to output
10
M
Operating Temperature Range
Ta
Over Vin range
–40
85 (5)
°C
Solder Reflow Temperature
Treflow
Surface temperature of module pins or case
215 (6)
°C
Storage Temperature
Ts
–40
125
°C
Reliability
MTBF
Per Bellcore TR-332
4
106 Hrs
50% stress, Ta =40°C, ground benign
Mechanical Shock
Per Mil-Std-883D, method 2002.3,
500
G’s
1mS, half-sine, mounted to a fixture
Mechanical Vibration
Mil-Std-883D, method 2007.2,
Suffix N
20 (7)
G’s
20-2000Hz , soldered
Suffixes A & C
20 (7)
Weight
23
grams
Flammability
Materials meet UL 94V-0
Notes:
(1)The DC/DC converter will operate at no load with reduced specifications.
(2) For optimum voltage accuracy the ‘Remote Sense (+)’ and ‘Remote Sense (–)’ pins must be connected to +Vout and –Vout respectively.
(3)The Remote On/Off (pin 1)has an internal pull-up, and if it is left open circuit the PT4520 will operate when input power is applied. Refer to the
application notes for interface considerations.
(4)External output capacitance is not required for proper operation. Capacitamce may be added to improve the response to load transients. The maximum
total capacitance (including the load circuit) must not exceed 220F, and the combined ESR of must not be less than 100m
.
(5)See Safe Operating Area curves or contact the factory for the appropriate derating.
(6)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).
(7)The case pins on the through-hole package types (suffixes N & A)must be soldered. For more information see the applicable package outline drawing.
SLTS148B - JUNE 2000 - REVISED OCTOBER 2002
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