- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98050 > P62000NLG8 (INTEGRATED DEVICE TECHNOLOGY INC) DUAL SWITCHING CONTROLLER, QCC64 PDF資料下載
參數(shù)資料
| 型號： | P62000NLG8 |
| 廠商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | DUAL SWITCHING CONTROLLER, QCC64 |
| 封裝： | ROHS COMPLIANT, QFN-64 |
| 文件頁數(shù)： | 10/62頁 |
| 文件大?。?/td> | 1221K |
| 代理商： | P62000NLG8 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁當前第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁
IDTP62000
2/3/4-PHASE PWM CONTROLLER WITH DYNAMIC VOLTAGE & FREQUENCY SCALING
IDT 2/3/4-PHASE PWM CONTROLLER WITH DYNAMIC VOLTAGE & FREQUENCY SCALING
18
IDTP62000
REV E 050510
CONFIDENTIAL
Operation
Multi-phase Power Conversion
As microprocessors have evolved in computing power so have PWM VCORE regulators. Single phase operation regulators
are no longer feasible for desktop power supplies. Although multi-phase power management regulators has been in
existence for decades, recent strides in computing power have mandated that it be applied to microprocessors. These
processors are no longer powered by low supply currents but can easily crest to 150A or more during heavy loading
transients. The only way to satisfy such heavy demands is to implement a multi-phase power supply. With very little design
effort the high current required can be obtained by breaking up the supply into smaller segments, thus realizing an improved
component count and minimizing heat dissipation.
Interleaving
In multi-phase PWM regulators the individual channels switching periods are evenly distributed over the PWM clock period.
In a four phase PWM regulator, for example, each channel will have time slots equally spaced exactly TPeriod/4 from each
other. Additionally, the combined ripple frequency will be 4x higher than for a single channel. The total ripple frequency will
have a peak-to-peak amplitude less than 1/4 that of a single phase. The translated benefit is that much smaller inductors are
required and the output capacitors can be of a much smaller size (as compared to a single channel PWM regulator.) Figure
14 depicts this combined multi-phase behavior where the total output ripple current is much smaller and thus much smaller
input and output capacitors are required. Although passive components have natural variation from one phase to another,
the IDTP62000 is able to balance the load even if the inductor DCRs are mismatched by up to 40%.
Figure 14: Inductor–Current Waveforms for a 4-Phase Converter
Voltage Regulation
Load Line (DROOP) Regulation (Adaptive Voltage Positioning)
During power supply operation, the load current of the microprocessor changes often. Due to the equivalent series
resistance of the output capacitor, an output voltage spike may occur in the load transient. To optimize the system's reliability,
performance and cost trade-offs, it is necessary that the voltage regulator adjust the output voltage proportional to changes
in the load current. This feature is called adaptive voltage positioning or droop.
7A/DIV
IL1 + IL2 + IL3 + IL4
1us/DIV
IL1
IL2
IL3
IL4
相關PDF資料 |
PDF描述 |
|---|---|
| P62000NLG | DUAL SWITCHING CONTROLLER, QCC64 |
| P95020NQG | 2-CHANNEL POWER SUPPLY MANAGEMENT CKT, QCC132 |
| P95020NQG8 | 2-CHANNEL POWER SUPPLY MANAGEMENT CKT, QCC132 |
| P95020ZNQGI8 | 2-CHANNEL POWER SUPPLY MANAGEMENT CKT, QCC132 |
| P95020ZLLG | 2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PBGA124 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| P6-20024 | 制造商:OTTO Engineering Inc 功能描述:S/A P6-20017 EX W/ |
| P6-20029 | 制造商:OTTO Engineering Inc 功能描述:S/A P6-20021 EX 2PDT |
| P6-20030 | 制造商:OTTO Engineering Inc 功能描述:S/A P6-20029 EX SPDT |
| P6-20050 | 制造商:OTTO Engineering Inc 功能描述:S/A P6-20018 EX |
| P6-20055 | 制造商:OTTO Engineering Inc 功能描述:S/A P6-20027 EX.W/ |
發(fā)布緊急采購，3分鐘左右您將得到回復。