- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383875 > T530X477M006AS (Texas Instruments, Inc.) 60-A, 3.3/5-V INPUT, NONISOLATED WIDE-OUTPUT ADJUST POWER MODULE PDF資料下載
參數(shù)資料
| 型號： | T530X477M006AS |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 60-A, 3.3/5-V INPUT, NONISOLATED WIDE-OUTPUT ADJUST POWER MODULE |
| 中文描述： | 60甲，3.3/5-V輸入，非隔離寬輸出調(diào)節(jié)電源模塊 |
| 文件頁數(shù)： | 8/24頁 |
| 文件大?。?/td> | 947K |
| 代理商： | T530X477M006AS |
www.ti.com
APPLICATION INFORMATION
CAPACITOR RECOMMENDATIONS FOR THE PTH04040W POWER MODULE
The PTH04040W uses state-of-the-art multi-phase power converter topology that employs multiple parallel
switching and filter inductor paths between the input and output capacitors. The PTH04040W uses three
switching paths. The three paths share the total load current, operate at the same frequency, and are evenly
displaced in phase.
INPUT CAPACITOR
OUTPUT CAPACITORS RECOMMENDED
CERAMIC CAPACITORS
TANTALUM CAPACITORS
PTH04040W
SLTS238A–SEPTEMBER 2005–REVISED FEBRUARY 2006
With multiple switching paths the transient output current capability is significantly increased. This reduces the
amount of external output capacitance required to support a load transient. The ripple current, as seen by the
input and output capacitors, is reduced in magnitude and effectively tripled in frequency.
The improved transient response of a multi-phase converter places a bigger burden on the transient capability of
the input source. The size and value of the input capacitor is therefore determined by this converter’s transient
performance capability. The minimum amount of input capacitance required is 940
μ
F (2
×
470
μ
F or 3
×
330
μ
F),
with an RMS ripple current rating of 400 mA. This minimum value assumes that the converter is supplied with a
responsive, low-inductance input source. This source should have ample capacitive decoupling and be
distributed the converter via PCB power and ground planes. For highperformance applications, or wherever the
transient capability of the input source is limited, 2,200
μ
F of input capacitance is recommended.
Ripple current and less than 100 m
equivalent series resistance (ESR) values are the major considerations,
along with temperature, when designing with different types of capacitors. Unlike polymer tantalum, conventional
tantalum capacitors have a recommended minimum voltage rating of 2
×
(maximum dc voltage + ac ripple). This
is standard practice to ensure reliability.
For improved ripple reduction on the input bus, ceramic capacitors may be used to complement electrolytic types
and achieve the minimum required capacitance.
In order to respond with load transients (sudden changes in load current) the regulator requires external output
capacitance. The minimum output capacitance is 660
μ
F (2
×
330
μ
F or 1
×
680
μ
F) with an ESR of at least
2 m
. This output capacitance is required for the module to meet its transient response specification. For most
applications, a high quality computer grade aluminum electrolytic capacitor is suitable. These capacitors provide
adequate decoupling over the frequency range, 2 kHz to 150 kHz, and when ambient temperatures are above
0
°
C. For operation below 0
°
C, tantalum, ceramic, or Os-Con type capacitors are recommended.
When using one or more nonceramic capacitors, the calculated equivalent ESR should be no lower than 4 m
7 m
using the manufacturer’s maximum ESR for a single capacitor. A list of preferred low-ESR type capacitors
are identified in
Table 1
.
Above 150 kHz, the performance of aluminum electrolytic capacitors becomes less effective. To further improve,
the reflected input ripple current or the output transient response, multilayer ceramic capacitors can also be
added. Ceramic capacitors have very low ESR and their resonant frequency is higher than the bandwidth of the
regulator. When used on the output their combined ESR is not critical as long as the total value of ceramic
capacitance does not exceed 300
μ
F. Also, to prevent the formation of local resonances, do not place more than
five identical ceramic capacitors in parallel with values of 10
μ
F or greater..
Tantalum type capacitors can be used at both the input and output, and are recommended for applications where
the ambient operating temperature can be less than 0
°
C. The AVX TPS, Sprague 593D/594/595, and Kemet
T495/ T510 capacitor series are suggested over many other tantalum types due to their higher rated surge,
power dissipation, and ripple current capability. As a caution, many general-purpose tantalum capacitors have
considerably higher ESR, reduced power dissipation and lower ripple current capability. These capacitors are
also less reliable when determining their power dissipation and surge current capability. Tantalum capacitors that
do not have a stated ESR or surge current rating are not recommended for power applications.
8
Submit Documentation Feedback
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| T5504 | Quad PCM Codecs with Filters(帶濾波器的四PCM編解碼器) |
| T70HF10 | POWER RECTIFIER DIODES |
| T70HF100 | POWER RECTIFIER DIODES |
| T70HF120 | POWER RECTIFIER DIODES |
| T70HF | CONTACTOR? COIL 120VAC NEMA |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| T530X477M006ASE006 | 功能描述:CAP TANT 470UF 6.3V 20% 2917 RoHS:否 類別:電容器 >> 鉭 系列:KO Cap T530 標(biāo)準(zhǔn)包裝:1,000 系列:TANTAMOUNT® 695D 電容:3.3µF 電壓 - 額定:50V 容差:±20% ESR（等效串聯(lián)電阻）:3.2 歐姆 類型:保形涂層 工作溫度:-55°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:2414（6034 公制） 尺寸/尺寸:0.236" L x 0.135" W（6.00mm x 3.43mm） 高度 - 座高（最大）:0.085"（2.16mm） 引線間隔:- 制造商尺寸代碼:F 特點(diǎn):通用 包裝:帶卷 (TR) 壽命@溫度:- |
| T530X477M006ASE010 | 功能描述:CAP TANT 470UF 6.3V 20% 2917 RoHS:否 類別:電容器 >> 鉭 系列:KO Cap T530 標(biāo)準(zhǔn)包裝:1,000 系列:TANTAMOUNT® 695D 電容:3.3µF 電壓 - 額定:50V 容差:±20% ESR（等效串聯(lián)電阻）:3.2 歐姆 類型:保形涂層 工作溫度:-55°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:2414（6034 公制） 尺寸/尺寸:0.236" L x 0.135" W（6.00mm x 3.43mm） 高度 - 座高（最大）:0.085"（2.16mm） 引線間隔:- 制造商尺寸代碼:F 特點(diǎn):通用 包裝:帶卷 (TR) 壽命@溫度:- |
| T530X477M006AT | 功能描述:鉭質(zhì)電容器-SMD聚合物 RoHS:否 制造商:Kemet 電容:33 uF 電壓額定值:50 V ESR:40 mOhms 容差:20 % 工作溫度范圍: 外殼代碼 - in:2917 外殼代碼 - mm:7343 高度:4 mm 制造商庫存號:X Case 系列:T543 產(chǎn)品: 封裝:Reel |
| T530X477M006ATE | 功能描述:鉭質(zhì)電容器-SMD聚合物 470uF 6volts 20% RoHS:否 制造商:Kemet 電容:33 uF 電壓額定值:50 V ESR:40 mOhms 容差:20 % 工作溫度范圍: 外殼代碼 - in:2917 外殼代碼 - mm:7343 高度:4 mm 制造商庫存號:X Case 系列:T543 產(chǎn)品: 封裝:Reel |
| T530X477M006ATE004 | 功能描述:鉭質(zhì)電容器-SMD聚合物 470uF 6.3 Volts 20% ESR = 4 mOhms RoHS:否 制造商:Kemet 電容:33 uF 電壓額定值:50 V ESR:40 mOhms 容差:20 % 工作溫度范圍: 外殼代碼 - in:2917 外殼代碼 - mm:7343 高度:4 mm 制造商庫存號:X Case 系列:T543 產(chǎn)品: 封裝:Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。