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| 型号： | TPS65148RHBR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC32 |
| 封装： | 5 X 5 MM, GREEN, PLASTIC, QFN-32 |
| 文件页数： | 28/30页 |
| 文件大小： | 947K |
| 代理商： | TPS65148RHBR |
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I
OUT -Loadcurrent-[A]
Efficiency-[%]
f =630kHz
L =10 H
f =1.2MHz
L =4.7 H
=5V
V IN
V S =18V
I
-Loadcurrent-[A]
OUT
Efficiency-[%]
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V IN=5V
V S =13.6V
f =630kHz
L =10 H
f =1.2MHz
L =4.7 H
www.ti.com
SLVS904A – MAY 2009 – REVISED JANUARY 2011
TYPICAL CHARACTERISTICS
TABLE OF GRAPHS
FIGURE
Efficiency vs. Load Current
VIN = 5 V, VS = 13.6 V
f = 630 kHz/1.2 MHz
Efficiency vs. Load Current
VIN = 5 V, VS = 18 V
f = 630 kHz/1.2 MHz
PWM Switching Discontinuous Conduction Mode
VIN = 5 V, VS = 13.6 V/ 2 mA
f = 630 kHz
PWM Switching Continuous Conduction Mode
VIN = 5 V, VS = 13.6 V/ 500 mA
f = 630 kHz
Boost Frequency vs. Load Current
VIN = 5 V, VS = 13.6 V
f= 630 kHz/1.2 MHz
Boost Frequency vs. Supply Voltage
VS = 13.6 V/100 mA
f = 630 kHz/1.2 MHz
Load Transient Response Boost Converter
VIN = 5 V, VS = 13.6 V
High Frequency (1.2 MHz)
IOUT = 50 mA ~ 400 mA, f = 1.2 MHz
Load Transient Response Boost Converter
VIN = 5 V, VS = 13.6 V
Low Frequency (630 KHz)
IOUT = 50 mA ~ 400 mA, f = 630 kHz
Boost Converter Output Current Capability
VIN = 5 V, VS = 9 V, 13.6 V, 15 V, 18 V
f = 1.2 MHz, L = 4.7 H
Soft-start Boost Converter
VIN = 5 V, VS = 13.6 V, IOUT = 600 mA
Overvoltage Protection Boost Converter (OVP)
VIN = 5 V, VS = 13.6 V
Load Transient Response LDO
VLVIN = 5 V, VS = 13.6 V
VREG_O = 12.5 V, ILVOUT = 5 mA - 30 mA
Gate Voltage Shaping
VGH = 23 V
XAO Signal and LCD Discharge Function
Power On Sequencing
Power Off Sequencing
Short Circuit Protection ( < 114 ms)
Short Circuit Protection ( > 114 ms)
For all the following graphics, the inductors used for the measurements are CDRH127 (L = 4.7 F) for
f = 1.2 MHz, and CDRH127LD (L = 10 F) for f = 630 kHz.
EFFICIENCY
vs
LOAD CURRENT (Vs = 13.6 V)
Load Current (Vs = 18 V)
Figure 1.
Figure 2.
Copyright 2009–2011, Texas Instruments Incorporated
7
Product Folder Link(s) :TPS65148
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