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| 型号： | TPS40132RHBT |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 40 A SWITCHING CONTROLLER, 1200 kHz SWITCHING FREQ-MAX, PQCC32 |
| 封装： | GREEN, PLASTIC, QFN-32 |
| 文件页数： | 26/40页 |
| 文件大小： | 1032K |
| 代理商： | TPS40132RHBT |
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www.ti.com
SLUS776A – DECEMBER 2007 – REVISED FEBRUARY 2008
Table 2. Definitions
SYMBOL
DESCRIPTION
VIN(min)
Minimum Operating Input Voltage
VIN(max)
Maximum Operating Input Voltage
VOUT
Output Voltage
IRIPPLE
Inductor Peak-Peak Ripple Current
ITRAN(max)
Maximum Load Transient
VUNDER
Output Voltage Undershot
VOVER
Output Voltage Overshot
VRIPPLE(totOUT)
Total Output Ripple
VRIPPLE(Cout)
Output Voltage Ripple Due to Output Capacitance
VRIPPLE(Cin)
Input Voltage Ripple Due to Input Capacitance
VRIPPLE(CinESR)
Input Voltage Ripple Due to the ESR of Input Capacitance
PSW(cond)
High-Side MOSFET Conduction Loss
ISW(rms)
RMS Current in the High-Side MOSFET
RDS(on)(sw)
"ON" Drain-Source Resistance of the High-Side MOSFET
PSW(sw)
High-Side MOSFET Switching Loss
IPK
Peak Current Through the High-Side MOSFET
RDRV
Driver Resistance of the High-Side MOSFET
Qgd(SW)
Gate to Drain Charge of the High-Side MOSFET
Qgs(SW)
Gate to Source Charge of the High-Side MOSFET
VqSW
Gate Drive Voltage of the High-Side MOSFET
PSW(gate)
Gate Drive Loss of the High-Side MOSFET
Qg(SW)
Gate Charge of the High-Side MOSFET
PSW(tot)
Total Losses of the High-Side MOSFET
PSR(cond)
Low-Side MOSFET Conduction Loss
ISRrms
RMS Current in the Low-Side MOSFET
RDS(on)(sr)
"ON" Drain-Source Resistance of the Low-Side MOSFET
PSR(gate)
Gate Drive Loss of the Low-Side MOSFET
QgSR
Gate Charge of the Low-Side MOSFET
VqSW
Gate Drive Voltage of the Low-Side MOSFET
PDIODE
Power Loss in the Diode
tD
Dead Time Between the Conduction of High and Low-Side MOSFET
VF
Forward Voltage Drop of the Body Diode of the Low-Side MOSFET
PSR(tot)
Total Losses of the Low-Side MOSFET
DCR
Inductor DC Resistance
AC
The Gain of the Current Sensing Amplifier, typically it is 13
ROUT
Output Load Resistance
VRAMP
Ramp Amplitude, typically it is 0.5V
T
Switching Period
GVC(s)
Control to Output Transfer Function
GC(s)
Compensator Transfer Function
TV(s)
Loop Gain Transfer Function
ACM
Gain of the Compensator
fP1, fP2
Pole Frequency of the Compensator
fZ1, fZ2
Zero Frequency of the Compensator
32
Copyright 2007–2008, Texas Instruments Incorporated
Product Folder Link(s) :TPS40132
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