Power ICs

Standard Application
Ordering Information
Through-Hole
PT3104A = 5 Volts
PT3105A = 12 Volts
PT3106A = 15 Volts
Surface Mount
PT3104C = 5 Volts
PT3105C = 12 Volts
PT3106C = 15 Volts
(For dimensions and PC
board layout, see Package
Style 700.)
Pin-Out Information
• Power Density 15 Watts/in
3
• Wide Input Voltage Range
18V to 40V
• 81% Efficiency
• 500 VDC Isolation
• Small Footprint
• No External Components Required
Power Trends’ PT3104A (5V),
PT3105A (12V) and PT3106A (15V)
Isolated DC-DC Converters advance the
state-of-the-art for board-mounted convert-
ers by employing high switching frequencies
greater than 650 KHz and planar magnetics
and surface-mount construction. They fea-
ture the industry’s smallest footprint, a power
density of 15 Watts/in
3
, and operate
at 80% efficiency. They are designed for
Telecom, Industrial, Computer, Medical,
and other distributed power applications
requiring input-to-output isolation.
Pin Function
1
Remote
ON/OFF
2-V
in
3+V
in
4-V
out
5+V
out
6 Do not connect
* See Thermal Derating Curves
62
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 [phone] Fax: [phone] http://www.powertrends.com
PT3100 Series
For assistance or to order, call [phone]
24V
15 WATT 24V TO 5V/12V/15V
ISOLATED DC-DC CONVERTER
Specifications
Characteristics
PT3100 SERIES
(T
a
=25°C unless noted) Symbols Conditions Min Typ Max Units
Output Current I
o
Over V
in
range, V
o
= 5V 0 — 3.0 A
V
o
= 12V 0 — 1.25 A
V
o
= 15V 0 — 1.0 A
Current Limit I
cl
V
in
= 18V, V
o
= 5V — 4.0 — A
V
o
= 12V — 1.75 — A
V
o
= 15V — 1.4 — A
On/Off Standby Current I
in standby
V
in
= 24V, Pin 1 = -V
in
—7 10mA
Short Circuit Current I
sc
V
in
= 24V, V
o
= 5V — 6.25 — A
V
o
= 12V — 2.5 — A
V
o
= 15V — 2.0 — A
Inrush Current I
ir
V
in
= 24V @ max I
o
— 1.0 2.0 A
t
ir
On start-up — 1.0 5.0 mSec
Input Voltage Range V
in
I
o
= 0.1 to max I
o
18.0 24.0 40.0 V
Output Voltage Tolerance ∆V
o
Over V
in
Range
T
A
= -20°C to +70°C
— ±1.0 ±2.0 %V
o
Ripple Rejection RR Over V
in
range @ 120 Hz — 60 — dB
Line Regulation Reg
line
Over V
in
range @ max I
o
— ±0.2 ±1.0 %V
o
Load Regulation Reg
load
10% to 100% of I
o
max — ±0.4 ±1.0 %V
o
V
o
Ripple/Noise V
n
V
in
=24V, I
o
=3.0A, V
o
=5V — 75 100 mV
pp
V
in
=24V, I
o
=1.25A, V
o
=12V — 75 150 mV
pp
V
in
=24V, I
o
=1.25A, V
o
=15V — 100 200 mV
pp
Transient Response t
tr
50% load change — 125 200 µSec
V
o
over/undershoot — 3.0 5.0 %V
o
Efficiency η V
in
=24V, I
o
=3.0A, V
o
=5V — 80 — %
V
in
=24V, I
o
=1.25A, V
o
=12V — 80 — %
V
in
=24V, I
o
=1A, V
o
=15V — 81 — %
Switching Frequency ƒ
o
Over V
in
and I
o
, V
o
=5V 800 850 900 kHz
V
o
=12V/15V 600 650 700 kHz
Recommended Operating T
a
V
in
= 24V @ max I
o
-20 — +70* °C
Temperature Range Free air convection, (40-60LFM)
Thermal Resistance θ
ja
Free Air Convection, (40-60LFM) — 14 — °C/W
Case Temperature T
c
@ Thermal shutdown — — 100 °C
Storage Temperature T
s
-40 — 110 °C
Mechanical Shock — Per Mil-STD-202F, Method 213B,
—50—G’s
6mS, Half-sine, mounted to a PCB
Mechanical Vibration — Per Mil-STD-202F, Method 204D,
—10—G’s
10-500Hz, Soldered in a PCB
Weight — — — 28 — grams
Isolation — — 500 — — 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
in
Off Short or 0 to 0.8 VDC above -V
in
+Vout
-Vout-Vin
+Vin
3
24
5
On/Off
1
PT3100
Application Notes
Mechanical Outline
Product Selector Guide
Revised 5/15/98