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參數(shù)資料
| 型號(hào)： | PWM5032-DIE |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, UUC |
| 封裝： | DIE |
| 文件頁(yè)數(shù)： | 5/19頁(yè) |
| 文件大小： | 220K |
| 代理商： | PWM5032-DIE |
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13
SCD5031 Rev J 4/4/08
Aeroflex Plainview
AUXILIARY AMPLIFIER
The chip includes an uncommitted op-amp with independent shutdown feature for use in any user-defined application.
Some possibilities are:
◆
Signal conditioning of an isolated configuration feedback voltage
◆
Implementation of more sophisticated compensation networks for control loop optimization
The Auxiliary amplifier has a unity gain bandwidth greater than 1MHz and an open loop gain greater than 100dB. The
ENAUX pin is active high such that a logic ''1'' enables the amplifier and logic ''0'' disables it. The amplifier has near
rail-to-rail capability on both the input and output.
A typical single output forward converter application is shown in Figure 9 to aid in the following operational description.
During normal operation, the oscillator jumpstarts each switching cycle by resetting the RS latch, causing the output
stage to go high and turn on M1. Current begins to build linearly through T1 and M1 and a proportional voltage is
developed across the small sense resistor Rs. Switching spikes are filtered by C1 and R1, and the resulting sawtooth
waveform is passed into the PWM to serve as the current comparator input. Meanwhile, a portion of the output voltage
is sensed and compared to the PWM’s internal precision 2.5V reference. The difference is then amplified and level
shifted to serve as the comparator threshold. When the voltage on the ISENSE pin exceeds this threshold, the comparator
fires and resets the latch. The output then turns off until the beginning of the next oscillator cycle when the process
repeats.
FIGURE 8 – Output Sink and Source Saturation Characteristics at +25°C
VSAT
110
mV
500
400
300
200
0
600
100
Current mA
100
5031
5032
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| PWM505 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| PWM-50-59 | 制造商:Brady Corporation 功能描述:REFILL PAGES - LEGEND: 50-59 |
| PWM510 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| PWM-6 | 制造商:Brady Corporation 功能描述: |
| PWM-60-12 | 功能描述:O/P +12V5A 制造商:mean well usa inc. 系列:PWM-60 零件狀態(tài):在售 類型:恒定電壓 拓?fù)?AC DC 轉(zhuǎn)換器 輸出數(shù):1 電壓 - 輸入（最小值）:90VAC 電壓 - 輸入（最大值）:305VAC 電壓 - 輸出:12V 電流 - 輸出（最大值）:5A 功率（W）:60W 電壓 - 隔離:3750V 調(diào)光:模擬，PWM 特性:OCP，OTP，OVP，SCP 等級(jí):IP67 工作溫度:-40°C ~ 85°C 效率:86% 端子類型:導(dǎo)線引線 大小/尺寸:5.91" 長(zhǎng) x 2.09" 寬 x 1.38" 高（150.0mm x 53.0mm x 35.0mm） 安裝類型:底座安裝 認(rèn)可:CB，CCC，CE，cURus，ENEC 標(biāo)準(zhǔn)包裝:1 |
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