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參數(shù)資料
| 型號(hào)： | PT3321A |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 26.4 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | SIP-19 |
| 文件頁數(shù)： | 3/10頁 |
| 文件大?。?/td> | 206K |
| 代理商： | PT3321A |
For technical support and more information, see inside back cover or visit www.ti.com
PT3320 Series
30-W 48-V Input
Isolated DC/DC Converter
Specifications (Unless otherwise stated, Ta =25°C, Vin =48V, Cout =330F, and Io =Iomax)
PT3320 SERIES
Characteristic
Symbol
Conditions
Min
Typ
Max
Units
Output Current
Io
Over 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
36.0
48.0
75.0
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
η
Vo = 15V
—
85
—
Vo = 12V
—
87
—
Vo =5.0V
—
84
—
Vo =3.3V
—
80
—
Vo =1.8V
—
69
—
Vo Ripple (pk-pk)
Vr
20MHz bandwidth
Vo ≥ 5.0V
—
1.0
2.0
%Vo
Vo ≤ 3.3V
—
50
75
mVpp
Transient Response
ttr
0.1A/s load step, 50% to 100% Iomax
—
100
200
s
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
s
Over Vin range
Vo>10V
400
500
600
kHz
Vo <10V
600
750
900
Under-Voltage Lockout
UVLO
Vin increasing
—
34
—
V
Vin decreasing
—
33
—
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
A
Standby Input Current
Iin standby
pins 2 & 4 connected
—
8
16
mA
Internal Input Capacitance
Cin
—
0.66
—
F
External Output Capacitance
Cout
Between +Vo and –Vo
Vo ≥ 9V
260
330
600
(3)
F
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
Ta
Over Vin range
-40 (4)
—
+85 (5)
°C
Maximum Case Temperature
Tc
—
100
°C
Storage Temperature Range
Ts
-40
—
+125
°C
Reliability
MTBF
Per Bellcore TR-332
4.9
—
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 in 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.
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