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参数资料
| 型号： | TPS65165RSBR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 6.6 A SWITCHING REGULATOR, 720 kHz SWITCHING FREQ-MAX, QCC40 |
| 封装： | 5 X 5 MM, GREEN, QFN-40 |
| 文件页数： | 8/30页 |
| 文件大小： | 815K |
| 代理商： | TPS65165RSBR |
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OUTPUT CAPACITOR SELECTION
Rectifier diode selection
Iavg + (1 * D)
Isw +
Vin
Vout
5.5A
(6)
P
D + Iavg
V
F + Isw
(1 * D)
Vsw
Vin
Vout
V
F
(7)
SETTING THE OUTPUT VOLTAGE AND SELECTING THE FEEDFORWARD CAPACITOR
Vout + 1.146V
1 )
R1
R2
(8)
1
R
5000
2
1
R
z
2
1
C
p
=
p
=
f
ff
(9)
COMPENSATION (COMP)
z +
1
2
p
Cc
Rc
(10)
SLVS723A – DECEMBER 2006 – REVISED MAY 2007
For best output voltage filtering, a low-ESR output capacitor is recommended. Ceramic capacitors have a low
ESR value and work best with the TPS65165. Three 22
F or six 10uF ceramic output capacitors in parallel are
sufficient for most applications. More capacitors can be added to improve the load transient regulation. Refer to
Table 3 for details on selecting output capacitors.
Table 3. Output Capacitor Selection
CAPACITOR
VOLTAGE RATING
COMPONENT SUPPLIER
22
F / 1812
16 V
Taiyo Yuden EMK432BJ226MM
To achieve high efficiency, a Schottky diode should be used. The reverse voltage rating should be higher than
the maximum output voltage of the converter. The current rating for the Schottky diode is calculated as the off
time of the converter times the typical switch current of the TPS65165:
where Isw = the typical switch current of the TPS65165 (5.5 A)
A Schottky diode with 2-A maximum average rectified forward current rating is sufficient for most applications.
The Schottky rectifier must have adequate power dissipation. The dissipated power is the average rectified
forward current times the diode forward voltage.
where Isw = typical switch current of the TPS65165 (5.5 A)
Table 4. Rectifier Diode Selection (Boost Converter)
CURRENT RATING
Vr
Vforward
RθJA
SIZE
COMPONENT SUPPLIER
Iavg
3 A
20 V
0.36 V at 3 A
46
°C/W
SMC
MBRS320, International Rectifier
2 A
20 V
0.44 V at 2 A
75
°C/W
SMB
SL22, Vishay Semiconductor
2 A
20 V
0.5 V at 2 A
75
°C/W
SMB
SS22, Fairchild Semiconductor
The output voltage is set by the external resistor-divider value, and is calculated as:
Across the upper resistor, a bypass capacitor is required to speed up the circuit during load transients. The
capacitor value is caluculated as:
A standard value nearest to the calculated value should be used.
The regulator loop can be compensated by adjusting the external components connected to the COMP pin. The
COMP pin is the output of the internal transconductance error amplifier. A single capacitor connected to this pin
sets the low-frequency gain. A 1.0-nF capacitor is sufficient for most of the applications. Adding a series resistor
sets an additional zero and increases the high-frequency gain. Equation 10 calculates the frequency where the
resistor increases the high frequency gain.
16
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS65165RSBRG4 | 功能描述:LCD Gamma缓冲器 Compact LCD Bias IC RoHS:否 制造商:Maxim Integrated 输入补偿电压: 转换速度: 电源电压-最大:20 V 电源电压-最小:9 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-38 封装:Tube |
| TPS65165RSBT | 制造商:Texas Instruments 功能描述:LCD DRVR 3.3V/5V 40QFN - Tape and Reel |
| TPS65166RHAR | 功能描述:LCD Gamma缓冲器 Comp LCD Bias Supply for TFT-LCD TV RoHS:否 制造商:Maxim Integrated 输入补偿电压: 转换速度: 电源电压-最大:20 V 电源电压-最小:9 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-38 封装:Tube |
| TPS65167ARHAR | 功能描述:其他电源管理 Compact LCD Bias Sply RoHS:否 制造商:Texas Instruments 输出电压范围: 输出电流:4 mA 输入电压范围:3 V to 3.6 V 输入电流: 功率耗散: 工作温度范围:- 40 C to + 110 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-48 封装:Reel |
| TPS65167ARHARG4 | 功能描述:其他电源管理 Compact LCD Bias Sply RoHS:否 制造商:Texas Instruments 输出电压范围: 输出电流:4 mA 输入电压范围:3 V to 3.6 V 输入电流: 功率耗散: 工作温度范围:- 40 C to + 110 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-48 封装:Reel |
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