參數(shù)資料
型號(hào)： TPS65170RHDT
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： 4.2 A SWITCHING REGULATOR, 900 kHz SWITCHING FREQ-MAX, PQCC28
封裝： 5 X 5 MM, GREEN, PLASTIC, QFN-28
文件頁(yè)數(shù)： 32/35頁(yè)
文件大?。?/td> 4698K
代理商： TPS65170RHDT
V
S
I
S
BOOSTCONVERTERLOADTRANSIENTRESPONSE
I
=250mA to750mA
S
V
=12V
V
=15.5V
IN
S
0
0.25
0.5
0.75
1
1.25
1.5
I -OutputCurrent- A
O
0
10
20
30
40
50
60
70
80
90
100
Efficiency-%
V
=12V,
V =15.5V
IN
S
BOOSTCONVERTEREFFICIENCY
vsOUTPUTCURRENT
SLVSA27 – OCTOBER 2009
www.ti.com
TYPICAL CHARACTERISTICS
TABLE OF GRAPHS
FIGURE NO.
BOOST CONVERTER
Efficiency
VIN = 12 V, VS = 15.5V
Load Transient Response
VIN = 12 V, VS = 15.5V, IS = 250 mA to 750 mA
Line Transient Response
VIN = 11.5 V to 12.5 V, VS = 15.5 V, IS = 750 mA, VGH = 26V, IGH = 50 mA
Output Voltage Ripple
VIN = 12 V, VS = 15.5 V, IS = 500 mA, VGH = 26V, IGH = 50 mA
CCM Operation, VIN = 12 V, IS = 250 mA
Switch Node (SW) Waveform
DCM Operation, VIN = 12 V, IS = 50 mA
BUCK CONVERTER
Efficiency
VIN = 12 V, VLOGIC = 3.3V
Load Transient Response
VIN = 12 V, VGL = -7V, IGL = 50mA, ILOGIC = 250 mA to 500 mA
Line Transient Response
VIN = 11.5 V to 12.5 V, VGL = -7V, IGL = 50mA, ILOGIC = 500 mA
Output Voltage Ripple
VIN = 12 V, VGL = -7V, IGL = 50mA, ILOGIC = 500 mA
CCM Operation, VIN = 12 V, ILOGIC = 250 mA
Switch Node (SW) Waveform
DCM Operation, VIN = 12 V, ILOGIC = 50 mA
Skip Mode, VIN = 12 V, ILOGIC = 0 mA
POSITIVE CHARGE PUMP
Load Transient Response
VIN = 12 V, VGH = 26 V, VS = 15.5V, IS = 250 mA, IGH = 10 mA to 50 mA
Line Transient Response
VIN = 11.5 V to 12.5 V, VGH = 26 V, IGH = 50 mA, VS = 15.5V, IS = 750
mA,
Output Voltage Ripple
VIN = 12 V, VGH = 26 V, IGH = 50 mA, VS = 15.5V, IS = 750 mA,
NEGATIVE CHARGE PUMP
Load Transient Response
VIN = 12 V, VGL = -7 V, ILOGIC = 250 mA, IGL = 10 mA to 50 mA
Line Transient Response
VIN = 11.5 V to 12.5 V, VGL = -7 V, IGL = 50 mA, ILOGIC = 250 mA
Output Voltage Ripple
VIN = 12 V, VGL = -7 V, ILOGIC = 250 mA, IGL = 50 mA
START-UP SEQUENCING
Power-Up Sequencing
Reset Operation
Figure 1.
Figure 2.
6
Copyright 2009, Texas Instruments Incorporated
Product Folder Link(s) :TPS65170
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