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参数资料
| 型号： | PT8139N |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 30 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, MSMA31 |
| 文件页数： | 3/9页 |
| 文件大小： | 194K |
| 代理商： | PT8139N |
For technical support and more information, see inside back cover or visit www.ti.com/powertrends
PT8139—12V
30-A Programmable Integrated
Switching Regulator
Specifications (Unless otherwise stated Ta =25°C, Cin =1,500F, Cout =660F, Vin =12V, & Io = Iomax )
PT8139 Series
Characteristics
Symbols
Conditions
Min
Typ
Max
Units
Output Current
Io
Natural convection or
0.1 (1)
—30
A
60°C with 200LFM airflow
Input Voltage Range
Vin
Over Io Range
10.8
—
13.2
V
Set-Point Voltage Tolerance
Vo tol
Over Vo range
—
±1
±2
%V
Line Regulation
Regline
Over Vin range
—
±10
—
mV
Load Regulation
Regload
Over Io range
—
±10
—
mV
Temperature Variation
Regtemp
–40°C
≤Ta ≤85°C
—
±0.5
—
%Vo
Total Output Voltage Variation
Votot
Includes set-point, line load,
—
±3
%V
–40°C
≤Ta ≤ 85°C
Efficiency
η
Io =15A
Vo =3.3V
—
92
—
Vo =2.5V
—
90
—
%
Vo =1.8V
—
86
—
Io =Iomax
Vo =3.3V
—
91
—
Vo =2.5V
—
88
—
%
Vo =1.8V
—
84
—
Vo Ripple (pk-pk)
Vr
20MHz bandwidth
—
20
—
mV
Transient Response
ttr
1A/s load step, 50% to 100% Iomax
—
50
—
Sec
Vtr
Vo over/undershoot
—
100
—
mV
Short Circuit Threshold
Iosc
—
40
—
A
Switching Frequency
o
Over load range
300
350
400
kHz
Standby Control (pin 6)
Referenced to GND (pins 17–22)
Input High Voltage
VIH
—
Open (2)
V
Input Low Voltage
VIL
–0.2
—
0.8
Input Low Current
IIL
Pin 6 to GND
—
0.5
—
mA
Standby Input Current
Iin standby
Pin 6 to GND
—
35
—
mA
External Output Capacitance
Cout
See application schematic
660 (5)
—
30,000
F
External Input Capacitance
Cin
See application schematic
1,500 (5)
——F
Operating Temperature Range
Ta
Over Vin Range
–40 (3)
—+85 (4)
°C
Storage Temperature
Ts
—
–40
—
+125
°C
Mechanical Shock
Per Mil-STD-883D, Method 2002.3
1 msec, Half Sine, mounted to a fixture
—
TBD
—
G’s
Mechanical Vibration
Mil-STD-883D, Method 2007.2
Vertical
—
TBD (6)
—
G’s
20-2000 Hz, soldered in PCB
Horizontal
—
TBD (6)
Weight
—
Vertical/Horizontal
—
55
—
grams
Flammability
—
Materials meet UL 94V-0
Notes: (1) ISR-will operate down to no load with reduced specifications.
(2) The Standby input (pin 6) has an internal pull-up. If it is left open-circuit the PT812x will operate when input power is applied. A low-leakage
MOSFET is recommended to control this input. The open-circuit voltage is nominally 5V. See application notes for interface considerations.
(3) For operation below 0°C, Cout must have stable characteristics. Use either low ESR tantalum or Oscon capacitors.
(4) See safe Operating Area curves or consult factory for the appropriate derating.
(5) The PT8120 regulators require a minimum of 660F, low ESR ouput capacitance (1,200F for standard aluminum electrolytic) for proper operation.
(6) The case pins on the through-hole package types (suffixes N & A) must be soldered. For more information see the applicable package outline drawing.
Input Filter: An input filter inductor is optional for most applications. The inductor must be rated to handle the projected input current. A rating of 10ADC for
Vout ≤3.3V, and 15ADC for Vout ≥4.5V is recommended. The input capacitance must be rated for a minimum of 1.6Arms of ripple current. For transient or dynamic
load applications, additional capacitance may be required.
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