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參數(shù)資料
| 型號(hào)： | TPS54383PWPR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 7 A DUAL SWITCHING CONTROLLER, 375 kHz SWITCHING FREQ-MAX, PDSO14 |
| 封裝： | GREEN, PLASTIC, HTSSOP-14 |
| 文件頁數(shù)： | 36/58頁 |
| 文件大?。?/td> | 1773K |
| 代理商： | TPS54383PWPR |
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www.ti.com
SLUS774B – AUGUST 2007 – REVISED OCTOBER 2007
Table 4. Definition of Symbols
CDJ
Average junction capacitance of the rectifier diode from 0V to VIN(max)
COSS
Average output capacitance of the switching MOSFET from 0V to VIN(max)
COUT
Output Capacitor
D(max)
Maximum steady state operating duty cycle
D(min)
Minimum steady state operating duty cycle
ESR(max)
Maximum allowable output capacitor ESR
fSW
Switching frequency
IBP
Output Current of BP regulator due to external loads
IDD
Switching quiescent current with no load on BP
ID(avg)
Average diode conduction current
ID(peak)
Peak diode conduction current
IIN(avg)
Average input current
IIN(rms)
Root mean squared (RMS) input current
IL(avg)
Average inductor current
IL(rms)
Root mean squared (RMS) inductor current
IL(peak)
Peak current in inductor
ILRIP(max)
Maximum allowable inductor ripple current
L(min)
Minimum inductor value to maintain desired ripple current
IOUT(max)
Maximum designed output current
IRMS(cin)
Root mean squared (RMS) current through the input capacitor
IRIPPLE
Inductor peak to peak ripple current
IQSW(rms)
Root mean squared current through the switching MOSFET
PCON
Power loss due to conduction through switching MOSFET
PD(max)
Maximum power dissipation in diode
RDS(on)
Drain to source resistance of the switching MOSFET when “ON”
PSW
Power loss due to switching
PREG
Power loss due to the internal regulator
VBP
Output Voltage of BP regulator
V(BR)R(min)
Minimum reverse breakdown voltage rating for rectifier diode
VFB
Regulated feedback voltage
VFD
Forward voltage drop across rectifier diode
VIN
Power stage input voltage
VOUT
Regulated output voltage
VRIPPLE(cap)
Peak to Peak ripple voltage due to ideal capacitor (ESR = 0
)
VRIPPLE(tot)
Maximum allowable peak to peak output ripple voltage
Copyright 2007, Texas Instruments Incorporated
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