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Details, datasheet, quote on part number:PT3320
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Datasheet text preview:
For assistance or to order, call
(800) 531-5782
Revised 5/19/99 30 WATT ISOLATED DC/DC CONVERTER Application Notes Mechanical Outline Product Selector Guide
PT3320
solate 30W I d SIPs
Series
New
The PT3320 is a new series of highinput voltage, 30 Watt, isolated DC to DC converters housed in a unique vertical or horizontal 19-pin SIP package. The 36 to 75V input range allows easy integration into many distributed power applications which utilize 48V bus architectures. The PT3320 series is available with output voltages from 2V to 15V. The output voltage is adjustable from 90 to
110% of nominal with the addition of an external resistor. Other easy to use features include an inhibit function and differential remote sense which automatically compensates for any voltage drop from the converter to the load. The PT3320 includes built in current limit, short circuit protection and overtemperature shutdown. The PT3320 requires a 330µF output capacitor for proper operation.
Patent pending*
Pin-Out Information Standard Application
VO Adjust
18 19
Features
Pin Function
10 11 12 13 14 15 16 17 18 19 -Vo -Vo -Vo -Remote Sense +V o +V o +V o +V o Vo Adjust +Remote Sense
Pin Function
1
+REMOTE SENSE
Do Not Use Inhibit Do Not Use -Vin -Vin -Vin + V in + V in + V in
+VIN
7-9
2
PT3320
4-6 13 10-12
14-17
+VO
2 3 4 5 6 7 8 9
CIN Inhibit -VIN
+ Q1
COUT
+ -VO
LOAD
-REMOTE SENSE
C i n = Optional 100µF/100V electrolytic C o u t = Required 330µF electrolytic Q1 = NFET
Preliminary Specifications
Characteristics (Ta = 25°C unless noted) Output Current
PT3320 SERIES
Symbols Io Iin standby Isc Vin Vo Regline Regload Vn ttr o Ta Ts -- -- -- -- -- -- -- Conditions Over Vin range Vo = 3.3V Vo = 5V Vo = 12V Min 0.25 0.25 0.1 -- -- 36.0 -- -- -- -- -- -- -- -- -- -- 600 400 -40* -40 -- -- -- 1500 -- 10 Typ -- -- -- 8 2 x Io m a x 48.0 ±1.0 ±0.5 ±0.5 1.0 50 100 3.0 80 84 85 750 500 -- -- 500 10 40 -- 1200 -- Max 8.0 6.0 2.5 16 -- 75.0 -- -- -- -- -- -- -- -- -- -- 900 600 +85 +125 -- -- -- -- -- -- Units A A A mA A V %Vo %Vo %Vo %Vo m Vp p µSec %Vo % % % kHz kHz °C °C G's G's grams VDC pF M
· 30W Output Power · Input Voltage Range: 36V to 75V · 1500 VDC Isolation · Vo Inhibit · Vo Adjust · Differential Remote Sense · Current Limit · Short-Circuit Protection · Over-T mperature Shutdown e · Undervoltage Lockout · Flexibile SIP Package · UL 1950, CSA 22.2 950 approval pending · Meets EN60950
On/Off Standby Current Short Circuit Current Input Voltage Range Output Voltage Tolerance Line Regulation Load Regulation Vo Ripple/Noise Transient Response Efficiency
Vin = 48V, Pin 1 = -Vin Vin = 48V Over Io Range Over Vin Range TA= -40°C to +85°C Over Vin range @ max Io 10% to 100% of Io max Vin=48V, Io=Io max, Vo>5V Vin=48V, Io=Io max, Vo5V Vin=48V, Io=6A, Vo=3.3V Vin=48V, Io=6A, Vo=5V Vin=48V, Io=2.5A, Vo=12V Over Vin and Io Vin = 48V @ max Io Airflow = 200 LFM -- Per Mil-Std-883D, method 2002.3, 1mS, half-sine, mounted to a fixture Per Mil-Std-883D, method 2007.2, 20-2000Hz, soldered in a PC board -- -- -- -- Materials meet UL 94V-0 Vo10V
Ordering Information
PT3321¨ PT3322¨ PT3323¨ PT3324¨ PT3325¨ PT3326¨ PT3327¨ PT3328¨ = 3.3V/8A = 5.0V/6A = 12.0V/2.5A = 15.0V/2A = 2.0V/8A = 2.5V/8A = 1.8V/8A = 5.2V/6A
PT Series Suffix (PT1234X)
Case/Pin Configuration
Vertical Through-Hole Horizontal Through-Hole Horizontal Surface Mount
Switching Frequency Recommended Operating Temperature Range Storage Temperature Mechanical Shock Mechanical Vibration Weight Input/Output Isolation Capacitance Resistance Flammability Inhibit (pin 2)
N A C
(For dimensions and PC board layout, see Package Styles 840 and 850.)
* Note: This product is the subject of one or more patents. Other patents pending.
On** 2.5 -- 15 VDC Referenced to -Vin Off 0 -- 0.8 VDC * At temperatures below 0°C, the PT3320 series requires output capacitors with temperature stable dielectrics such as tantalum or Oscon. ** If pin 2 is left open, the PT3320 will operate when input power is applied.
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
PT3320
CHARACTERISTIC DATA
Series
PT3321, 3.3 VDC
(See Note 1)
PT3322, 5.0 VDC
(See Note 1)
PT3323, 12.0 VDC
(See Note 1)
Efficiency vs Output Current
90 90
Efficiency vs Output Current
90
Efficiency vs Output Current
80
80
80
Efficiency (%)
Efficiency (%)
Efficiency (%)
Vi n
70
36.0V 48.0V 60.0V 75.0V
Vi n
70
36.0V 48.0V 60.0V 75.0V
Vi n
70
36.0V 48.0V 60.0V 75.0V
60
60
60
50
50
50
40 0 2 4 6 8
40 0 1 2 3 4 5 6
40 0. 0 0. 5 1. 0 1. 5 2. 0 2. 5
Iout (A)
Iout (A)
Iout (A)
Ripple vs Output Current
40 50
Ripple vs Output Current
16 0 14 0 40
Ripple vs Output Current
30
12 0
Ripple (mV)
Ripple (mV)
Vi n
20
36.0V 48.0V 60.0V 75.0V
Ripple (mV)
30
Vi n
36.0V 48.0V 60.0V 75.0V
10 0 80 60 40
Vi n
36.0V 48.0V 60.0V 75.0V
20
10 10
20 0 0 2 4 6 8 0 0 1 2 3 4 5 6 0 0. 0 0. 5 1. 0 1. 5 2. 0 2. 5
Iout (A)
Iout (A)
Iout (A)
Power Dissipation vs Output Current
8 7 6 6 5
Power Dissipation vs Output Current
6 5
Power Dissipation vs Output Current
PD (Watts)
4 3 2 1
4
PD (Watts)
36.0V 48.0V 60.0V 75.0V
PD (Watts)
Vi n
Vi n
36.0V 48.0V 60.0V 75.0V
4 3 2 1 0
Vi n
36.0V 48.0V 60.0V 75.0V
2
0 0 2 4 6 8
0 0 1 2 3 4 5 6
0. 0
0. 5
1. 0
1. 5
2. 0
2. 5
Iout (A)
Iout (A)
Iout (A)
Safe Operating Area (@Vin=48V)
90 90
Safe Operating Area (@Vin=48V)
90
Safe Operating Area (@Vin=48V)
Ambient Temperature (°C)
80 70 60 50 40 30 20
Ambient Temperature (°C)
Ambient Temperature (°C)
80 70 60 50 40 30 20 0 2 4 6 8
80 70 60 50 40 30 20 0 1 2 3 4 5 6
Airflow
N a t conv 6 0LF M 1 20L FM 2 00L FM
Airflow
N a t conv 6 0LF M 1 20L FM 2 00L FM
Airflow
N a t conv 60 LF M 12 0L FM 20 0L FM
0
0.5
1
1.5
2
2.5
Iout (A)
Iout (A)
Iout (A)
Note 1: 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.
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
Application
Notes
PT3320/3340 Series More Application Notes
Adjusting the Output Voltage of the PT3320 / PT3340 Series of Isolated DC-DC Converters
The factory pre-set output voltage of Power Trends' PT3320 and PT3340 series 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 pin 18 (Vo adjust), and pin 13 (-Remote Sense). See note 4. Adjust Down: Add a resistor (R1), between pin 18 (Vo adjust) and pin 19 (+Remote Sense). Refer to Figure 1 and T ble 2 for both the placement and value a 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 # 2 4 V Bus 48V Bus Vo(nom) Vo(min) Vo(max) Vr Ro (k) Rs (k) PT3341 PT3321 3.3 2.95 3.65 1.225 33.2 150.0
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 1012, and 1417) can be significantly higher than Va, and may exceed Vo (max). If Va is adjusted upward, the alternative is to increase the minimum input voltage 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) = Ro (Vo Vr)(Va Vr) Vr (Vo Va) Ro (Vo Vr) (Va Vo) Vo Va Vr Ro Rs Rs Rs k k
R2 Where
=
= Original output voltage = Adjusted output voltage = Reference voltage (Table 1) = Multiplier resistance (Table 1) = Series resistance (Table 1)
PT3325 2.0V 1.8V 2.2 1.225 80.6 150.0
PT3326 2.5 2.25 2.75 1.225 33.2 121.0
PT3342 PT3322 5.0 4.5 5.5 1.225 18.2 121.0
PT3343 PT3323 12.0 10.8 13.2 2.5 14.3 90.9
PT3344 PT3324 15.0 13.5 16.5 2.5 11.0 80.6
Figure 1
2 Inhibit 7 , 8, 9
19 Sns(+) 1 4 - 17
+ V in
+Vin
PT3320/3340
-Vin 4 , 5, 6 -Vout 1 0 - 12 Sns(-) 13
+Vout
+V
Vo(adj) 18
Cin 1 0 0 µF 100V (Optional)
(R1) A d j Down
+
Cout 3 3 0 µF R2 A d j Up
+
L O A D
- V in
-V
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.powertrends.com
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