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| 型号： | TPS51513RHB |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, PQCC32 |
| 封装： | 5 X 5 MM, GREEN, PLASTIC, QFN-32 |
| 文件页数： | 3/38页 |
| 文件大小： | 1159K |
| 代理商： | TPS51513RHB |
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www.ti.com
SLUS956A – JUNE 2009 – REVISED FEBRUARY 2010
DETAILED DESCRIPTION
Application Circuit List of Materials
Recommended parts for key external components for the circuits in Figure 2 and Figure 3 are in Table 2. These
parts have passed applications tests.
Table 2. Key External Component Recommendations
COMPONENT
MANUFACTURER
PART NUMBER
TI
CSD16409Q3
High-side FET(s)
Infineon
BSC080N03MSG
TI
CSD16401Q5
Low-side FET(s)
Infineon
BSC030N03MSG
Panasonic
ETQP4L series
Tokin
MPCG1040L series
Inductors
Toko
FDUE10140D series
Vishay
IHLP5050 series
Panasonic
EEFSX0D331XE
Bulk output capacitors
Kemet
T528Z series
NEC Proadlizer
PFAF250E127MNS
Panasonic
ECJ2FB0J106K
Ceramic output capacitors
Murata
GRM21BR60J106KE19L
Sense resistor (resistor sensing only)
Panasonic
ERJM1WTJ1M0U
Panasonic
ERTJ1VG103JA
NTC thermistors
TDK
NTCG163JF103HT
Functional Overview
The TPS51513 is a DCAP+ mode adaptive on-time converter. The output voltage is set using a DAC that
outputs a reference in accordance with either the 3-bit VID code defined in Table 3. VID-on-the-fly transitions are
supported with the slew rate controlled by a single resistor on the ISLEW pin. Powerful integrated FET drivers
support output currents in excess of 25 A. The converter automatically runs in discontinuous mode to optimize
light-load efficiency and battery life. The four switching frequency selections (given in Table 3) enable
optimization of the power chain for the cost, size and efficiency requirements of the design.
Table 3. Frequency Selection Table
TONSEL
FREQUENCY (fSEL) (kHz)
GND
250
VREF
300
3.3 V
350
5 V
500
In adaptive on-time converters, the controller changes the on-time as a function of input and output voltage to
maintain a nearly constant frequency during steady-state conditions. In conventional voltage-mode constant
on-time converters, each cycle begins when the output voltage crosses to a fixed reference level. However, in
the TPS51513, the cycle begins when the current feedback reaches an error voltage level which is the amplified
difference between the DAC voltage and the feedback voltage.
This approach has two advantages:
1. The amplifier DC gain sets an accurate linear load-line; this is required for CPU core applications.
2. The error voltage input to the PWM comparator is filtered to improve the noise performance.
Copyright 2009–2010, Texas Instruments Incorporated
11
Product Folder Link(s) :TPS51513
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS51513RHBR | 功能描述:DC/DC 开关控制器 3-28V Input Sync. Step Down Controller RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| TPS51513RHBT | 功能描述:DC/DC 开关控制器 3-28V Input Sync. Step Down Controller RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| TPS51513RHBT | 制造商:Texas Instruments 功能描述:Controller IC |
| TPS51518RUKR | 功能描述:DC/DC 开关控制器 Sgl Phase DCAP & D-CAP2 Cntrlr RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| TPS51518RUKT | 功能描述:DC/DC 开关控制器 Sgl Phase DCAP & D-CAP2 Cntrlr RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
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