PT3340 Series Datasheet by Texas Instruments

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PT3340 Series
30-W 24/48-V Input
Isolated DC/DC Converter
Standard Application
Cin = Optional 100µF/100V electrolytic
Cout = Required 330µF electrolytic (See Notes)
Q1= N-Channel MOSFET
R1/C1= Optional (see application notes)
PT3340
2
19
7, 8, 9 14-17
4-6 10-1213 L
O
A
D
C
IN
+
V
O
Adjust
+V
IN
Inhibit
+REMOTE SENSE
–REMOTE SENSE
+V
O
–V
O
–V
IN
Q
1
C
OUT
+
18
R
1
C
1
Features
Input Voltage Range:
18V to 60V
1500 VDC Isolation
On/Off Control
Vo Adjust
Differential Remote Sense
Current Limit
Short-Circuit Protection
Over-Temperature Shutdown
Description
The PT3340 series is a single-output
isolated DC/DC converter, housed in a
19-pin aluminum SIP package. These
modules are UL, CSA, and VDE ap-
proved for telecom applications, and
rated at 30W or 8A. The 18V to 60V
input range allows easy integration into
many distributed power applications which
utilize 24V bus architectures.
Standard output voltages range from
1.8V to 15V, and are each adjustable by
up to ±10%. Operating features include
a Remote On/Off control, an under-voltage
lockout (UVLO), and a differential re-
mote sense. Protection features include
an output current limit, short-circuit
protection, and over-temperature shut-
down.
A 330µF output capacitor is required
for proper operation.
Ordering Information
PT3341H = 3.3V/8A (26.4W)
PT3342H = 5.0V/6A
PT3343H = 12.0V/2.5A
PT3344H = 15.0V/2A
Pin-Out Information
Pin Function
1 Do Not Use
2 Remote On/Off
3 Do Not Use
4-V
in
5-V
in
6-V
in
7+V
in
8+V
in
9+V
in
10 -Vo
11 -Vo
12 -Vo
13 -Remote Sense
14 +Vo
15 +Vo
16 +Vo
17 +Vo
18 Vo Adjust †
19 +Remote Sense
For more information,
see application notes.
SLTS019B
(Revised 4/9/2002)
Undervoltage Lockout
Flexible SIP Package
UL1950 Recognized
CSA 22.2 950 Certified
EN60950 Approved
VDE Licensed
5 x106 Hrs MTBF
Meets FCC Class A
Radiated Limits
PT Series Suffix (PT1234x)
Case/Pin Order Package
Configuration Suffix Code *
Vertical N(EHG)
Horizontal A(EHH)
SMD C(EHJ)
* Previously known as package styles 840 &
850.
(Reference the applicable package code draw-
ing for the dimensions and PC board layout)
*9 TEXAS INSTRUMENTS
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PT3340 Series
30-W 24/48-V Input
Isolated DC/DC Converter
Specifications (Unless otherwise stated, Ta =25°C, Vin =24V, Cout =330µF, and Io =Iomax)
PT3340 SERIES
Characteristic Symbol Conditions Min Typ Max Units
Output Current IoOver Vin range Vo = 15V 0.1 (1) — 2.0
Vo = 12V 0.1 (1) 2.5 A
Vo =5.0V 0.25 (1) — 6.0
Vo 3.3V 0.25 (1) — 8.0
Input Voltage Range Vin Over Io Range 18.0 24.0 60.0 V
Set Point Voltage Tolerance Vo tol Vo 5.0V — ±1 ±1.5 %Vo
Vo 3.3V ±33 ±50 mV
Temperature Variation Regtemp –40° Ta +85°C ±0.5 %Vo
Line Regulation Regline Over Vin range Vo 5.0V ±0.2 ±1.0 %Vo
Vo 3.3V — ±7 ±33 mV
Load Regulation Regload Over Io range Vo 5.0V ±0.4 ±1.0 %Vo
Vo 3.3V ±13 ±33 mV
Total Output Voltage Variation Votot Includes set-point, line, load, Vo 5.0V — ±2 — %Vo
–40° Ta +85°C Vo 3.3V — ±67 — mV
Efficiency ηVo = 15V 85
Vo = 12V 86 %
Vo =5.0V 83
Vo =3.3V 80
Vo Ripple (pk-pk) Vr20MHz bandwidth Vo 5.0V 1.0 2.0 %Vo
Vo 3.3V 50 75 mVpp
Transient Response ttr 0.1A/µs load step, 50% to 100% Iomax 100 200 µs
Vtr Vo over/undershoot Vo 5.0V ±3.0 ±5.0 %Vo
Vo 3.3V ±100 ±150 mV
Short Circuit Current Isc — 2xIomax — A
Switching Frequency ƒsOver Vin range Vo >10V 450 500 550 kHz
Vo <10V 700 750 800
Under-Voltage Lockout UVLO Vin increasing 17 V
Vin decreasing 16
Remote On/Off Input (pin 2) Referenced to –Vin (pins 4–6)
Input High Voltage VIH 2.5 15 (2) V
Input Low Voltage VIL –0.2 — +0.8
Input Low Current IIL –3 –6 –10 µA
Standby Input Current Iin standby pins 2 & 4 connected 8 16 mA
Internal Input Capacitance Cin — 0.66 — µF
External Output Capacitance Cout Between +Vo and –VoVo 9V 260 330 600 (3) µF
Vo 5V 260 330 1,000 (3)
Isolation Voltage Input-output/input-case 1500 — — Vdc
Capacitance Input-output 1200 — pF
Resistance Input-output 10 — — M
Operating Temperature Range TaOver Vin range -40 (4) +85 (5) °C
Maximum Case Temperature T
c— — 100 °C
Storage Temperature Range Ts -40 +125 °C
Reliability MTBF Per Bellcore TR-332 5.0 — — 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 Per Mil-Std-883D, method 2007.2, 10 G’s
20-2000Hz, soldered to board
Weight — 43 — grams
Flammability Materials meet UL 94V-0
Notes: (1) The DC/DC converter will operate at no load with reduced specifications.
(2) The Remote On/Off input has an internal pull-up. If it is left open circuit the module will operate when input power is applied. A low-leakage
(<100nA) MOSFET is recommended to control this input. The open-circuit voltage is less than 10V. See application notes for interface considerations.
(3) Output capacitor values are absolute. Allowances must be made for any additional de-coupling capacitors and the total external capacitor tolerance.
The value of external capacitance is limited due to regulator startup current requirements. Consult the factory for further details.
(4) For operation below 0°C, the required external output capacitor must have temperature stable characteristics. E.g. Tantalum or Oscon® types.
(5) See Safe Operating Area curves or contact the factory for the appropriate thermal derating.
*9 TEXAS INSTRUMENTS
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Note A: All data listed in the above graphs has been developed from actual products tested at 25°C. This data is considered typical data for the DC-DC Converter.
Note B: SOA Curves represent operating conditions at which internal components are at or below manufacturer’s maximum rated operating temperatures.
PT3342, 5.0 VDC (See Note A) PT3343, 12.0 VDC (See Note A)
Efficiency vs Output Current Efficiency vs Output Current Efficiency vs Output Current
Ripple vs Output Current Ripple vs Output Current Ripple vs Output Current
Power Dissipation vs Output Current Power Dissipation vs Output Current Power Dissipation vs Output Current
PT3341, 3.3 VDC (See Note A)
Safe Operating Area (Vin =24V) (See Note B) Safe Operating Area (Vin =24V) (See Note B)Safe Operating Area (Vin =24V) (See Note B)
PT3340 Series
30-W 24/48-V Input
Isolated DC/DC Converter
Typical Characteristics
20
30
40
50
60
70
80
90
02468
Iout (A)
Ambient Temperature (°C)
200LFM
120LFM
60LFM
Nat conv
Airflow
20
30
40
50
60
70
80
90
0123456
Iout (A)
Ambient Temperature (°C)
Nat conv
60LFM
120LFM
200LFM
Airflow
20
30
40
50
60
70
80
90
0.0 0.5 1.0 1.5 2.0 2.5
Iout (A)
Ambient Temperature (°C)
200LFM
120LFM
60LFM
Nat conv
Airflow
0
10
20
30
40
50
02468
Iout (A)
Ripple - mV
60.0V
48.0V
36.0V
24.0V
18.0V
VIN
0
2
4
6
8
10
02468
Iout (A)
Pd - Watts
18.0V
24.0V
36.0V
48.0V
60.0V
VIN
0
10
20
30
40
50
60
70
0123456
Iout (A)
Ripple - mV
60.0V
48.0V
36.0V
24.0V
18.0V
VIN
0
2
4
6
8
10
0123456
Iout (A)
Pd - Watts
60.0V
48.0V
36.0V
24.0V
18.0V
VIN
0
20
40
60
80
100
120
00.511.522.5
Iout (A)
Ripple - mV
60.0V
48.0V
36.0V
24.0V
18.0V
VIN
0
2
4
6
8
10
0 0.5 1 1.5 2 2.5
Iout (A)
Pd - Watts
60.0V
48.0V
36.0V
24.0V
18.0V
VIN
50
60
70
80
90
02468
Iout (A)
Efficiency - %
18.0V
24.0V
36.0V
48.0V
60.0V
VIN
50
60
70
80
90
0123456
Iout (A)
Efficiency - %
18.0V
24.0V
36.0V
48.0V
60.0V
VIN
50
60
70
80
90
00.511.522.5
Iout (A)
Efficiency - %
18.0V
24.0V
36.0V
48.0V
60.0V
VIN
*9 TEXAS INSTRUMENTS
Application Notes
For technical support and more information, see inside back cover or visit www.ti.com
Adjusting the Output Voltage of Power Trends’
30W Isolated DC/DC Converter Series
The factory pre-set output voltage of Power Trends’ 30W
series of isolated DC/DC converters may be adjusted
within a nominal ±10% range. This is accomplished with
the addition of a single external resistor. For the input
voltage range specified in the data sheet, Table 1 gives the
allowable adjustment range for each model as Vo (min)
and Vo (max).
Adjust Up: An increase in the output voltage is obtained
by adding a resistor, R2 between Vo adjust (pin 18), and
-Remote Sense (pin 13). See note 4.
Adjust Down: Add a resistor (R1), between Vo adjust (pin
18), and +Remote Sense (pin 19).
Refer to Figure 1 and Tables 2 & 3 for both the placement and
value of the required resistor, (R1) or R2.
Notes:
1. Use only a single 1% resistor in either the (R1) or R2
location. Place the resistor as close to the ISR as possible.
2. Never connect capacitors to Vo adjust. Any capacitance
added to the Vo adjust control pin will affect the stability of
the ISR.
Table 1
DC/DC CONVERTER ADJUSTMENT RANGE AND FORMULA PARAMETERS
Series Pt #
AL Case:
24V Bus PT3341 PT3342 PT3343 PT3344
48V Bus PT3327 PT3325 PT3326 PT3321 PT3322 PT3323 PT3324
CU Case:
24V Bus PT4585 PT4581 PT4582 PT4583 PT4584
48V Bus PT4567 PT4565 PT4566 PT4561 PT4562 PT4571 PT4563 PT4564
Vo(nom) 1.8V 1.8V 2.0V 2.5V 3.3V 5.0V 9.0V 12.0V 15.0V
Vo(min) 1.62V 1.62V 1.8V 2.25V 2.95V 4.5V 7.0V 10.8V 13.5V
Vo(max) 2.5V 1.98V 2.2V 2.75V 3.65V 5.5V 10.0V 13.2V 16.5V
Vr1.225V 1.225V 1.225V 1.225V 1.225V 1.225V 2.5V 2.5V 2.5V
Ko (V·k
)69.58 69.58 62.47 42.33 68.89 68.71 133.25 135.9 137.5
Rs (k
)80.6 80.6 150.0 121.0 150.0 121.0 110 90.9 80.6
Figure 1
(R1)
Adj Down
R2
Adj
Up
Cin
100
µ
F
100V
(Optional)
+
Cout
330
µ
F
+L
O
A
D
+V
out
-V
out
+V
in
-V
in
30W Isolated
184, 5, 6
7, 8, 9 +Vin +Vout
-Vin Vo
(
ad
j)
Remote
On/Off
2
Sns
(
+
)
19
10 - 12
-Vout
14 - 17
Sns
(
-
)
13
3. If the remote sense pins are not being used, the resistors
(R1) and R2 can be connected to +Vout or -Vout
respectively.
4. The adjusted output voltage, Va effectively sets the voltage
across pins 13 and 19 (±Remote Sense). When using the
remote sense pins, Vout (measured directly across pins 10–
12, and 14–17) can be significantly higher than Va, and may
exceed Vo (max). If Va is adjusted upward of Vo(max), the
the minimum input voltage is increased by the same
percentage as Vout exceeds Vo(max).
The values of (R1) [adjust down], and R2 [adjust up], can
also be calculated using the following formulas.
(R1)=Ko (Va – Vr)– Rsk
Vr (Vo Va)
R2=Ko Rsk
(Va Vo)
Where Vo= Original output voltage
Va= Adjusted output voltage
Vr= Reference voltage (Table 1)
Ko= Multiplier constant (Table 1)
Rs= Series resistance (Table 1)
PT3320/3340/4560/4580 Series
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Application Notes
continued
Table 2
DC/DC CONVERTER ADJUSTMENT RESISTOR VALUES
Series Pt #
AL Case
24V Bus PT3341
48V Bus PT3327 PT3325 PT3326 PT3321
CU Case
24V Bus PT4585 PT4581
48V Bus PT4567 PT4565 PT4566 PT4561
Current 8Adc 8Adc 8Adc 8Adc 8Adc
Vo(nom) 1.8V 1.8V 2.0V 2.5V 3.3V
Va(reqd)
R1 = (Blue) R2 = Black
1.65 (80.3)k(80.3)k
1.7 (189.0)k(189.0)k
1.75 (516.0)k(516.0)k
1.8
1.85 1.31M1.31M(62.5)k
1.9 615.0k615.0k(194.0)k
1.95 383.0k383.0k(589.0)k
2.0 267.0k
2.05 198.0k1.1M
2.1 151.0k475.0k
2.15 118.0k266.0k
2.2 93.3k162.0k
2.25 74.0k(20.7)k
2.3 58.6k(64.7.0)k
2.35 45.9k(138.0)k
2.4 35.4k(285.0)k
2.45 26.4k(726.0)k
2.5 18.8k
2.55 726.0k
2.6 302.0k
2.65 161.0k
2.7 90.6k
2.75 48.3k
2.95 (127.0)k
3.0 (183.0)k
3.05 (261.0)k
3.1 (377.0)k
3.15 (572.0)k
3.2 (961.0)k
3.25 (2.13)M
3.3
3.35 1.23M
3.4 539.0k
3.45 309.0k
3.5 194.0k
3.55 126.0k
3.6 79.6k
3.65 46.8k
PT3320/3340/4560/4580 Series
*9 TEXAS INSTRUMENTS
Application Notes
For technical support and more information, see inside back cover or visit www.ti.com
Table 3
DC/DC CONVERTER ADJUSTMENT RESISTOR VALUES
Series Pt #
AL Case
24V Bus PT3342 PT3343 PT3344
48V Bus PT3322 PT3323 PT3324
CU Case
24V Bus PT4582 PT4583 PT4584
48V Bus PT4562 PT4571 PT4563 PT4564
Current 6Adc 3.3Adc 2.5Adc 2.0Adc
Vo(nom) 5.0V 9.0V 12.0V 15.0V
Va(reqd) Va(reqd)
R1 = (Blue) R2 = Black
4.5 (246.0)k7.0 (9.9)k
4.55 (293.0)k7.2 (29.2)k
4.6 (352.0)k7.4 (53.2)k
4.65 (428.0)k7.6 (84.2)k
4.7 (529.0)k7.8 (125.0)k
4.75 (670.0)k8.0 (183.0)k
4.8 (882.0)k8.2 (270.0)k
4.85 (1.23)M8.4 (414.0)k
4.9 (1.94)M8.6 (703.0)k
4.95 8.8 (1.57)M
5.0 9.0
5.05 9.2 556.0k
5.1 566.0k9.4 223.0k
5.15 337.0k9.6 112.0k
5.2 223.0k9.8 56.6k
5.25 154.0k10.0 23.3k
5.3 108.0k
5.35 75.3k10.8 (285.0)k
5.4 50.8k11.0 (371.0)k
5.45 31.7k11.2 (500.0)k
5.5 16.4k11.4 (715.0)k
11.6 (1.15)M
11.8
12.0
12.2 588.0k
12.4 249.0k
12.6 136.0k
12.8 78.9k
13.0 45.0k
13.2 22.3k
13.5 (323.0)k
13.6 (355.0)k
13.8 (437.0)k
14.0 (522.0)k
14.2 (724.0)k
14.4 (1010.0)k
14.6 (1.58)M
14.8
15.0
15.2 607.0k
15.4 263.0k
15.6 149.0k
15.8 91.3k
16.0 56.9k
16.5 11.1k
PT3320/3340/4560/4580 Series
{’3 TEXAS INSTRUMENTS
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Application Notes
Using Remote On/Off on Power Trends
30W Isolated DC-DC Converter Series
Power Trends’ 30W isolated series of DC/DC converters
incorporate a Remote On/Off function. This function may
be used in applications for battery conservation, power-
up/shutdown sequencing, or to co-ordinate the power-up
of the regulator for active in-rush current control. (See
TI application reports, SLTA021, and SLUA250).
The Remote On/Off function is provided by pin 2. If
pin 2 is left open-circuit, the converter provides a regu-
lated output whenever a valid source voltage 1 is applied
between +Vin (pins 7-9), and –Vin (pins 4-6). Applying
a low voltage 2, with respect to –Vin (pin 2), disables the
regulator output 3. Table 1 details the control requirements
for this input. Figure 1 shows how a discrete MOSFET
(Q1) may be referenced to the negative input voltage rail
to control the Remote On/Off pin.
Table 1 Remote On/Off Control Requirements 2
Parameter min max
Enable (VIH) 2.5V 5 15V (or open circuit) 4
Disable (VIL) –0.3V 0.8V
Notes:
1. These converters incorporate an “Under Voltage Lockout”
(UVLO) function. This function automatically holds the
converter output in the “Off” state until there is sufficient
input voltage for the converter to produce a regulated
output. Table 2 gives the applicable UVLO thresholds.
Table 2 UVLO Thresholds
Series UVLO Threshold Vin Range
PT3320/4560 34 ± 2.0V 36 – 75V
PT3340/4580 16.5 ± 1.5V 18 – 60V
2. The Remote On/Off control pin uses –Vin (pins 4-6) as its
ground reference. All voltages specified are with respect to
–Vin.
3. When the converter output is disabled the current drawn
from the input supply is typically reduced to 8mA (16mA
maximum).
4. The internal circuitry comprises of a high impedance (3µA
-10µA) current source. The open-circuit voltage is less
than 10V.
5. The Remote On/Off pin is ideally controlled using devices
with an open-collector (or open-drain) output. A small
low-leakage MOSFET (<100nA) is recommended. A
pull-up resistor is not required, but may be necessary to
ensure that the Remote On/Off pin exceeds VIH(min)
(see Table 1). Do not use a pull-up resistor to the +Vin
input, or drive the pin above VIH(max).
Figure 1
Turn-On Time: When the Remote On/Off input is left
open-circuit, the output of the converter is automatically
enabled when a valid input voltage 1 is applied to the
input power pins. The converter typically rises to full
regulation within 30ms of the application of power (or
after the release of the Remote On/Off pin with input
power applied). The actual turn-on time will vary with
the input voltage, output load, and the total amount of
capacitance connected to the output. Using the circuit of
Figure 1, Figure 2 shows the typical output voltage and
input current waveforms for a PT3322/PT4562 after Q1
is turned off. The turn off of Q1 correlates with the fall
of the Q1 Vgs waveform. The waveforms were measured
with a 48Vdc input voltage, and 5-A resistive load.
Figure 2
PT3320/3340/4560/4580 Series
30W Isolated
184, 5, 6
7, 8, 9 +Vin +Vout
-Vin Vo(adj)
Remote
On/Off
2
Sns(+)
19
10 - 12
-Vout
14 - 17
Sns(-)
13
C
out
+
C
in
+
Q1
BSS138
+V
o
V
o
+V
in
-V
in
OFF/ ON
C
1
0.01µF
R
1
, 10k
R
1
& C
1
-See Note 7
6. Keep the on/off transition to less than 1ms. This prevents
erratic operation of the ISR, whereby the output voltage
may drift un-regulated between 0V and the rated output
voltage during power-up.
7. In Figure 1, Q1 is a low-threshold MOSFET. The
components R1 and C1 are added to improve noise
susceptibility.
Vo (2V/Div)
Iin (0.5A/Div)
Q1Vgs (10V/Div)
HORIZ SCALE: 2ms/Div
VDE Inshllation Instrllctinns | Q 1M7; [lg/40! *9 TEXAS INSTRUMENTS
Application Notes
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PT3320/3340 Series
VDE Approved Installation Instructions (Installationsanleitung)
Nennspannnug (Rated Voltage): PT3320 36 to 72 Vdc, Transient to 75Vdc
PT3340 18 to 60 Vdc
Nennaufnahme (Rated Input): PT3320 1.5 Adc
PT3340 3.0 Adc
Nennleistung (Rated Power): 30 Watts Maximum
Ausgangsspannung (Sec. Voltage): PT3320 Series PT3340 Series
PT3321, 3.3 Vdc, 8.0 Adc PT3341, 3.3 Vdc, 8.0 Adc
PT3322, 5.0 Vdc, 6.0 Adc PT3342, 5.0 Vdc, 6.0 Adc
Ausgangsstrom (Sec. Current): PT3323, 12.0 Vdc, 2.5 Adc PT3343,12.0 Vdc, 2.5 Adc
oder (or) PT3324, 15.0 Vdc, 2.0 Adc PT3344,15.0 Vdc, 2.0 Adc
Ausgangsleistung (Sec. Power): PT3325, 2.0 Vdc, 8.0 Adc
PT3326, 2.5 Vdc, 8.0 Adc
PT3327, 1.8 Vdc, 8.0 Adc
PT3328, 5.2 Vdc, 6.0 Adc
PT3329, 6.0 Vdc, 5.0 Adc
PT3330, 8.0 Vdc, 3.75 Adc
PT3331, 9.0 Vdc, 3.3 Adc
Angabe der Umgebungstemperatur
(Information on ambient temperature): +85°C Ambient or 100°C Case Maximum
Besondere Hinweise (Special Instructions):
Es ist vorzusehen, daß die Spannungsversorgung in einer Endanwendung über eine isolierte
Sekundaerschaltung bereit gestellt wird. Die Eingangspannung der Spannungsversorgungsmodule muss
eine verstaerkte Isolierung von der Wechselstromquelle aufweisen.
Die Spannungsversorgung muss gemaess den Gehaeuse-, Montage-, Kriech- und Luftstrecken-,
Markierungs- und Trennanforderungen der Endanwendung installiert werden. Bei Einsatz eines TNV-3-
Einganges muss die SELV-Schaltung ordnungsgemaess geerdet werden.
(The power supply is intended to be supplied by isolated secondary circuitry in an end use application.
The input power to these power supplies shall have reinforced insulation from the AC mains.
The power supply shall be installed in compliance with the enclosure, mounting, creepage, clearance,
casualty, markings, and segregation requirements of the end-use application. When the input is TNV-3,
the SELV circuitry must be reliably grounded.)
Offenbach,
VDE Prüf- und Zertifizierungsinstitut
Abteilung /
Department TD
(Jürgen Bärwinkel)
Ort /
Place
: Datum /
Date
:
(Stempel und Unterschrift des Herstellers / Stamp
and signature of the manufacturer)
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