參數(shù)資料
型號: LTC3731HUH#PBF
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: 5 A SWITCHING CONTROLLER, 750 kHz SWITCHING FREQ-MAX, PQCC32
封裝: 5 X 5 MM, LEAD FREE, PLASTIC, MO-220WHHD, QFN-32
文件頁數(shù): 17/34頁
文件大小: 427K
代理商: LTC3731HUH#PBF
LTC3731H
3731Hfb
7) The 47pF to 330pF ceramic capacitor between the ITH
pin and signal ground should be placed as close as pos-
sible to the IC.
Figure 11 illustrates all branch currents in a three-phase
switching regulator. It becomes very clear after study-
ing the current waveforms why it is critical to keep the
high switching current paths to a small physical size.
High electric and magnetic fields will radiate from these
“l(fā)oops” just as radio stations transmit signals. The output
capacitor ground should return to the negative terminal
applicaTions inForMaTion
+
RIN
VIN
VOUT
CIN
BOLD LINES INDICATE HIGH,
SWITCHING CURRENTS.
KEEP LINES TO A MINIMUM LENGTH.
+
COUT
D3
D2
SW2
D1
L1
SW1
RSENSE1
L2
RSENSE2
L3
SW3
RSENSE3
3731H F11
RL
SENSE+
LTC3731H
1000pF
INDUCTOR
OUTPUT CAPACITOR
SENSE
RESISTOR
3731H F12
SENSE
Figure 11. Branch Current Waveforms
Figure 12. Kelvin Sensing RSENSE
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