Texas Instruments PT4104A, PT4104C, PT4105A, PT4105C, PT4106A Datasheet
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For assistance or to order, call (800) 531-5782
PT4100 Series
24V
Product Selector Guide
15 WATT 24V TO 5V/12V/15V
ISOLATED DC-DC CONVERTER
Application Notes
Mechanical Outline
Revised 5/15/98
• -40°C to +85°C Operating
Temperature Range
• 1500 VDC Isolation
• Power Density 15 Watts/in
• Wide Input Voltage Range
18V to 40V
• 83% Efficiency
• Small Footprint
• UL Approved
3
Power Trends’ PT4104A (5V), PT4105A (12V)
and PT4106A (15V). Isolated DC-DC Converters
advance the state-of-the-art for board-mounted converters by employing high switching frequencies
greater than 650 KHz and planar magnetics and surface-mount construction. They feature the industry’s
smallest footprint, a power density of 15 Watts/in
operate at 83% efficiency. They are designed for
Telecom, Industrial, Computer, Medical, and other
distributed power applications requiring input-tooutput isolation and an industrial temperature range.
Standard Application
On/Off
+Vin
1
3
PT4100
24
+Vout
5
-Vout-Vin
Specifications
Characteristics
(Ta=25°C unless noted) Symbols Conditions Min Typ Max Units
Output Current I
Current Limit I
On/Off Standby Current I
Short Circuit Current I
Inrush Current I
Input Voltage Range V
Output Voltage Tolerance ∆V
Ripple Rejection RR Over Vin range @ 120 Hz — 60 — dB
Line Regulation Reg
Load Regulation Reg
Vo Ripple/Noise V
Transient Response t
Efficiency η Vin=24V, Io=3.0A, Vo=5V — 82 — %
Switching Frequency ƒ
Recommended Operating T
Temperature Range Free air convection, (40-60LFM)
Thermal Resistance θ
Case Temperature T
Storage Temperature T
Mechanical Shock — Per Mil-STD-202F, Method 213B,
Mechanical Vibration — Per Mil-STD-202F, Method 204D,
Weight — — — 28 — grams
Isolation — — 1500 — — V
Capacitance — — — 1100 — pF
Resistance — — 10 — — MΩ
Flammability — Materials meet UL 94V-0
Remote On/Off On Open or 2.5 to 7.0 VDC above -V
* See Thermal Derating Curves
o
cl
in standby
sc
ir
t
ir
in
n
tr
o
a
ja
c
s
Off Short or 0 to 0.8 VDC above -V
Over Vin range, Vo = 5V 0 — 3.0 A
Vin = 18V, Vo = 5V — 4.0 — A
Vin = 24V, Pin 1 = -V
Vin = 24V, Vo = 5V — 6.25 — A
Vin = 24V @ max I
On start-up — 1.0 5.0 mSec
Io = 0.1 to max I
Over Vin Range
o
TA= -40°C to +85°C
Over Vin range @ max I
line
10% to 100% of Io max — ±0.4 ±1.0 %V
load
Vin=24V, Io=3.0A, Vo=5V — 75 100 mV
Vin=24V, Io=1.25A, Vo=12V — 75 150 mV
Vin=24V, Io=1.25A, Vo=15V — 100 200 mV
50% load change — 125 200 µSec
Vo over/undershoot — 3.0 5.0 %V
=24V, Io=1.25A, Vo=12V — 82 — %
V
in
Vin=24V, Io=1A, Vo=15V — 83 — %
Over Vin and Io, Vo=5V 800 850 900 kHz
Vo=12V/15V 600 650 700 kHz
Vin = 24V @ max I
Free air convection, (40-60LFM) — 12 — °C/W
@ Thermal shutdown — — 100 °C
6mS, Half-sine, mounted to a PCB
10-500Hz, Soldered in a PCB
V
= 12V 0 — 1.25 A
o
Vo = 15V 0 — 1.0 A
= 12V — 1.75 — A
V
o
Vo = 15V — 1.4 — A
in
= 12V — 2.5 — A
V
o
Vo = 15V — 2.0 — A
o
o
o
o
PT4100 SERIES
—7 10mA
— 1.0 2.0 A
18.0 24.0 40.0 V
— ±1.0 ±2.0 %V
— ±0.2 ±1.0 %V
-40 — +85* °C
-40 — 110 °C
—50—G’s
—10—G’s
in
in
3
, and
Pin-Out Information
Pin Function
Remote
1
ON/OFF
2-V
in
3+V
in
4-V
out
5+V
out
6 Do not connect
Ordering Information
o
o
o
pp
pp
pp
o
Through-Hole
PT4104A = 5 Volts
PT4105A = 12 Volts
PT4106A = 15 Volts
Surface Mount
PT4104C = 5 Volts
PT4105C = 12 Volts
PT4106C = 15 Volts
(For dimensions and PC
board layout, see Package
Style 700.)
64
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.powertrends.com
For assistance or to order, call (800) 531-5782
PT4100 Series
CHARACTERISTIC DATA
PT4104, 5.0 VDC
(See Note 1)
PT4105, 12.0 VDC
(See Note 1)
Efficiency vs Output Current Efficiency vs Output Current Efficiency vs Output Current
100
90
80
70
Efficiency - %Ripple-(mV)Iout-(Amps)PD-(Watts)
60
50
40
0 0.5 1 1.5 2 2.5 3
Iout-(Amps) Iout-(Amps) Iout-(Amps)
Vin
18V
24V
32V
40V
100
90
80
70
Efficiency - %
60
50
40
0.25 0.5 0.75 1 1.25
Vin
18V
24V
32V
40V
Ripple vs Output Current Ripple vs Output Current Ripple vs Output Current
110
90
70
50
30
10
0 0.5 1 1.5 2 2.5 3
Iout-(Amps) Iout-(Amps) Iout-(Amps)
Vin
40V
32V
24V
18V
110
90
70
50
Ripple-(mV)
30
10
0.25 0.5 0.75 1 1.25
Vin
40V
32V
24V
18V
PT4106, 15.0 VDC
(See Note 1)
100
90
80
70
Efficiency - %
60
50
40
0.25 0.5 0.75 1
110
90
70
50
Ripple-(mV)Iout-(Amps)
30
10
0.25 0.5 0.75 1
24V
DATA SHEETS
24V Bus Products
Vin
18V
24V
32V
40V
Vin
40V
32V
24V
18V
Thermal Derating (Ta) (See Note 2) Thermal Derating (Ta) (See Note 2) Thermal Derating (Ta) (See Note 2)
3
2.5
2
1.5
1
0.5
0
18 20 22 24 26 28 30 32 34 36 38 40
NO DERATING @ 85°C
Vin-(Volts) Vin-(Volts)Vin-(Volts)
1.25
1
0.75
0.5
Iout-(Amps)
0.25
0
18 20 22 24 26 28 30 32 34 36 38 40
NO DERATING @ 85˚C
1
0.8
0.6
0.4
0.2
0
18 20 22 24 26 28 30 32 34 36 38 40
NO DERATING @ 85°C
Power Dissipation vs Output Current Power Dissipation vs Output Current Power Dissipation vs Output Current
5
4
3
2
1
0
0 0.5 1 1.5 2 2.5 3
Iout-(Amps) Iout-(Amps) Iout-(Amps)
5
Vin
40V
32V
24V
18V
4
3
2
PD-(Watts)
1
0
0.25 0.5 0.75 1 1.25
Vin
40V
32V
24V
18V
5
4
3
2
PD-(Watts)
1
0
0.25 0.5 0.75 1
Vin
40V
32V
24V
18V
Note 1: All data listed in the above graphs, except for derating data, has been developed from actual products tested at 25°C. This data is considered typical data for the DC-DC Converter.
Note 2: Thermal derating graphs are developed in free air convection cooling of 40-60 LFM.
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://
www.powertrends.com
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