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参数资料
| 型号： | PT4222A |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 10 W DC-DC REG PWR SUPPLY MODULE |
| 封装： | SIP-10 |
| 文件页数： | 2/8页 |
| 文件大小： | 186K |
| 代理商： | PT4222A |
For technical support and more information, see inside back cover or visit www.ti.com
PT4220 Series
10-W Low-Profile 48V-Input
Isolated DC/DC Converter
Specifications (Unless otherwise stated, Ta =25°C, Vin =48V, Cin =0F, Cout =0F, and Io =Iomax)
PT4220 SERIES
Characteristic
Symbol
Conditions
Min
Typ
Max
Units
Output Current
Io
Over Vin range
Vo ≤ 3.3V
0.1 (1)
—3
Vo =5.0V
0.1 (1)
—2
Vo = 12V
0.1 (1)
—
0.85
Input Voltage Range
Vin
Over Io Range
36.0
48.0
75.0
VDC
Set Point Voltage Tolerance
Vo tol
—
±1±2%Vo
Temperature Variation
Regtemp
–40°
≤Ta ≤ +85°C, Io =Iomin
—
±0.2
—
%Vo
Line Regulation
Regline
Over Vin range
—
±1
—
mV
Load Regulation
Regload
Over Io range
—
±5
—
mV
Total Output Voltage Variation
Votot
Includes set-point, line, load,
—
±1.5
±3
%Vo
–40°
≤Ta ≤ +85°C
Efficiency
η
Vo = 12V
—
87
—
Vo = 5.0V
—
85
—
Vo = 3.3V
—
81
—
Vo = 2.5V
—
78
—
%
Vo = 1.8V
—
73
—
Vo = 1.5V
—
71
—
Vo = 1.3V
—
65
—
Vo Ripple (pk-pk)
Vr
20MHz bandwidth
Vo ≤ 5.0V
—
50
—
mVpp
Vo = 12V
—
100
—
Transient Response
ttr
1A/s load step, 50% to 100% Iomax
—
75
—
s
Vtr
Vo over/undershoot
Vo ≤ 5.0V
—
±150
—
mV
Vo = 12V
—
±350
—
Output Voltage Adjust
Vadj
Vo ≥2.5V
±10
—
%Vo
Current Limit Threshold
Ilim
Vin =36V, Vo = –1%
—
150
—
%Iomax
Switching Frequency
s
Over Vin range
250
300
350
kHz
Under-Voltage Lockout
UVLO
—
32
—
V
Remote On/Off (Pin 1)
Referenced to –Vin (pin 3)
Input High Voltage
VIH
4.5
—
Open (3)
V
Input Low Voltage
VIL
–0.2
—
+0.8
Input Low Current
IIL
—
–0.5
—
mA
Standby Input Current
Iin standby
pins 1 & 3 connected
—
1
—
mA
Internal Input Capacitance
Cin
—
0.66
—
F
External Output Capacitance
Cout
Vo ≤5.0V
0 (5)
—
1000
F
Vo = 12V
0 (5)
—
330
Isolation Voltage
Input–output/input–case
1500
—
V
Capacitance
Input to output
—
1,100
—
pF
Resistance
Input to output
10
—
M
Operating Temperature Range
Ta
Over Vin range
-40
—
+85 (4)
°C
Storage Temperature
Ts
—
-40
—
+125
°C
Reliability
MTBF
Per Bellcore TR-332
4.7
—
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
—
Mil-Std-883D, Method 2007.2
—
20 (6)
—G’s
20-2000Hz, all case styles soldered to PC
Weight
—
20
—
grams
Flammability
—
Materials meet UL 94V-0
Notes:
(1) The DC/DC converter will operate at no load with reduced specifications.
(2) The maximum output current reduces the output power of the following devices to less than 10W:-
PT4225 =7.5W; PT4221 =5.4W; PT4226 =4.5W; PT4227 =3.9W.
(3) The Remote On/Off (pin 1) has an internal pull-up, and if it is left open circuit the converter will operate when input power is applied. The open-circuit
voltage is typically 5V. Refer to the application notes for interface considerations.
(4) See Safe Operating Area curves or contact the factory for the appropriate derating.
(5) An output capacitor is not required for proper operation.
(6) The case pins on through-hole pin configurations (N & A) must be soldered. For more information see the applicable package outline drawing.
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