参数资料
型号: TPS54160ADRCR
厂商: Texas Instruments
文件页数: 31/55页
文件大小: 0K
描述: IC REG BUCK ADJ 1.5A 10SON
标准包装: 3,000
系列: SWIFT™, Eco-Mode™
类型: 降压(降压)
输出类型: 可调式
输出数: 1
输出电压: 0.8 V ~ 58 V
输入电压: 3.5 V ~ 60 V
PWM 型: 电流模式
频率 - 开关: 100kHz ~ 2.5MHz
电流 - 输出: 1.5A
同步整流器:
工作温度: -40°C ~ 150°C
安装类型: 表面贴装
封装/外壳: 10-VFDFN 裸露焊盘
包装: 带卷 (TR)
供应商设备封装: 10-SON 裸露焊盘(3x3)

SLVSB56C – MAY 2012 – REVISED FEBRUARY 2014
9 Application and Implementation
9.1 Application Information
TPS5426x devices are part of a family of non-synchronous, step-down converters with an integrated high-side
FET and 100% duty cycle capability. Idea applications are 12-V, 24-V and 48-V industrial and commercial low
power systems. Aftermarket Auto Accessories: Video, GPS, Entertainment
9.2 Typical Application
L1
C1
0.1 m F
10 m H
3.3 V at 1.5 A
8 - 18 V
U1
TPS54160ADGQ
BOOT PH
D1
B220A
+
C OUT
47 m F/6.3 V
VIN
GND
C2
C3
C4
R3
EN
COMP
2.2 m F 2.2 m F 0.1 m F
332 k W
R4
61.9 k W
CSS
0.01 m F
SS/TR
RT/CLK
RT
90.9 k W
VSNS
PWRGD
CF
6.8 pF
RC
76.8 k W
CC
2700 pF
R1
31.6 k W
R2
10 k W
Figure 51. High Frequency, 3.3V Output Power Supply Design with Adjusted UVLO.
9.2.1 Design Requirements
This example details the design of a high frequency switching regulator design using ceramic output capacitors.
A few parameters must be known in order to start the design process. These parameters are typically determined
at the system level. For this example, we will start with the following known parameters:
Table 1. Design Parameters
DESIGN PARAMETER
Output Voltage
Transient Response 0 to 1.5A load step
Maximum Output Current
Input Voltage
Output Voltage Ripple
Start Input Voltage (rising VIN)
Stop Input Voltage (falling VIN)
EXAMPLE VALUE
3.3 V
Δ V OUT = 4%
1.5 A
12 V nom. 8 V to 18 V
< 33 mV pp
7.7 V
6.7 V
9.2.2 Detailed Design Procedures
9.2.2.1 Selecting the Switching Frequency
The first step is to decide on a switching frequency for the regulator. Typically, the user will want to choose the
highest switching frequency possible since this will produce the smallest solution size. The high switching
frequency allows for lower valued inductors and smaller output capacitors compared to a power supply that
switches at a lower frequency. The switching frequency that can be selected is limited by the minimum on-time of
the internal power switch, the input voltage and the output voltage and the frequency shift limitation.
Equation 12 and Equation 13 must be used to find the maximum switching frequency for the regulator, choose
the lower value of the two equations. Switching frequencies higher than these values will result in pulse skipping
or the lack of overcurrent protection during a short circuit.
Copyright ? 2012–2014, Texas Instruments Incorporated
Product Folder Links: TPS54160 TPS54160A
31
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TPS54160DGQR 功能描述:直流/直流开关调节器 3.5-60V 1.5A Step Down SWIFT Converter RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5
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