参数资料
型号: ISL6440IAZ-TK
厂商: Intersil
文件页数: 14/15页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM CM 24-QSOP
产品培训模块: Solutions for Industrial Control Applications
标准包装: 1,000
PWM 型: 电流模式
输出数: 2
频率 - 最大: 340kHz
占空比: 93%
电源电压: 4.5 V ~ 24 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 85°C
封装/外壳: 24-SSOP(0.154",3.90mm 宽)
包装: 带卷 (TR)
ISL6440
value as shown. The combined out-of-phase current is the
square root of the sum of the square of the individual
reflected currents and is significantly less than the combined
in-phase current.
5
4.5
4
3.5
3
2.5
2
IN PHASE
OUT OF PHASE
1.5
1
0.5
3.3V
5V
0
0
1
2 3
4
5
3.3V AND 5V LOAD CURRENT
FIGURE 17. INPUT RMS CURRENT vs LOAD
Use a mix of input bypass capacitors to control the voltage
ripple across the MOSFETs. Use ceramic capacitors for the
high frequency decoupling and bulk capacitors to supply the
RMS current. Small ceramic capacitors can be placed very
close to the upper MOSFET to suppress the voltage induced
in the parasitic circuit impedances.
For board designs that allow through-hole components, the
Sanyo OS-CON? series offer low ESR and good
temperature performance. For surface mount designs, solid
tantalum capacitors can be used, but caution must be
exercised with regard to the capacitor surge current rating.
These capacitors must be capable of handling the surge-
current at power-up. The TPS series available from AVX is
surge current tested.
14
FN9040.2
October 4, 2005
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