參數(shù)資料
型號(hào)： TPS5103DB
廠商： Texas Instruments, Inc.
英文描述： MULTIPLE MODE SYNCHRONOUS DC/DC CONTROLLER
中文描述： 多模同步DC / DC控制器
文件頁(yè)數(shù)： 24/37頁(yè)
文件大?。?/td> 1052K
代理商： TPS5103DB
TPS5103
MULTIPLE MODE SYNCHRONOUS DC/DC CONTROLLER
SLVS240 – SEPTEMBER 1999
24
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
loop gain compensation
Voltage mode control is used in this controller for the output voltage regulation. To achieve fast, stabilized
control, two parts are discussed in this section: the power stage small signal modeling and the compensation
circuit design.
For the buck converter, the small signal modeling circuit is shown below:
+
–
a
c
ia
ic
p
D
1
Vap
D
d
∧
Ic d
∧
+
VI
RL
L
ZL
C
R
RC
ZRC
VO
From this equivalent circuit, several control transfer functions can be derived: input-to-output, output
impedance, and control-to-output. Typically the control-to-output transfer function is used for the feedback
control design.
Assuming Rc and RL are much smaller than R, the simplified small signal control-to-output transfer function is:
Vod
∧
d
(1
sCRc)
1
s C
Rc
RL
L
R
s2LC
∧
Where C is the output capacitance; Rc is the equivalent serial resistance (ESR) in the output capacitor; L is the
output inductor; RL is the equivalent serial resistance (ESR) in the output inductor; R is the load resistance.
To achieve the fast transient response and the better output voltage regulation, a compensation circuit is added
to improve the feedback control. The whole system is shown below:
PWM
Power
Stage
Compensation
Vref
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TPS5103EVM-136 功能描述:電源管理IC開(kāi)發(fā)工具 PWM/Hysteretic Buck Contr RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
TPS5103IDB 功能描述:DC/DC 開(kāi)關(guān)控制器 Synch BuckController RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
TPS5103IDBG4 功能描述:DC/DC 開(kāi)關(guān)控制器 Synch Buck Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
TPS5103IDBR 功能描述:DC/DC 開(kāi)關(guān)控制器 Synch Buck Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
TPS5103IDBRG4 功能描述:DC/DC 開(kāi)關(guān)控制器 Synch Buck Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
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