器件名称: FM704A
功能描述: EMI Input Filter and Transient Suppression Module
文件大小: 1783.9KB 共8页
简 介:Crane Aerospace & Electronics Power Solutions
FM-704A EMI Input Filter and Transient Suppression Module
FEATURES
–55°C to +125°C operation 16 to 40 VDC input Up to 60 dB attenuation at 500 kHz. Active transient suppression Undervoltage lockout Inhibit function Compliant to MIL-STD-461C, CE03
MODEL
FM-704A 40 Watts
DESCRIPTION
Interpoint’s FM-704A EMI Filter and Transient Suppression Module combines EMI filtering and transient protection to handle the demanding requirements of military, aerospace and industrial applications. As an EMI filter the FM-704A filter reduces the reflected ripple current from DC/DC switching converters. As a protection module, it suppresses input transients on the power bus to protect the converter and other downstream components.
INTERNAL POWER DISSIPATION
To keep internal power dissipation to safe operating levels, the input current should never exceed 2.5 amps at 16 Vin or 1.0 amp at 40 Vin. When the FM-704A filter is used with PWM (Pulse Width Modulated) converters, Iline will vary as Power / Vline and 2.5 amps maximum at 16 Vin will reduce to approximately 1 amp maximum at 40 Vin. The maximum value allowed may be less than 1 amp as determined by line transients and the safe operating area of Figure 9. Figure 9 illustrates the maximum allowed internal dissipation for the FM-704A filter. To calculate watts dissipated, subtract 40 volts from the transient (VT) to determine the maximum voltage across the filter and multiply the result by t……
