FEBSPM3SPM45_M01MTCA Fairchild Semiconductor, FEBSPM3SPM45_M01MTCA Datasheet - Page 24

• Manufacturer Part Number: FEBSPM3SPM45_M01MTCA
• Description: Power Management IC Development Tools FNB41560 Eval Board 2100W with Heatsink
• Manufacturer: Fairchild Semiconductor
• Type: Motor / Motion Controllers & Driversr
• Series: SPM3, SPM45Hr

Specifications of FEBSPM3SPM45_M01MTCA

• Rohs: yes
• Product: Evaluation Boards
• Tool Is For Evaluation Of: FNB41560
• Input Voltage: 265 VAC
• Output Voltage: 390 VDC
• Description/function: Evaluation board for Motion SPM3/45H
• Output Current: 7 A, 15 A
• For Use With: FNB41560

© 2012 Fairchild Semiconductor Corporation
8. Key Parameter Design
8.1. Current-Sensing Circuit
To simplify current-sensing circuit design, this evaluation board has open-emitter DC-
link terminals (N
more detailed explanation. In this example, the ideal sense resistor value is 8 mW The
board includes a default sense resistor of 10 mW The actual sense resistor value used is
typically a balance between noise-levels at small currents and sense-resistor losses.
Calculation Conditions
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




Installed SPM: FNB41560
Op Amp: FAN4274
Resistance of Sense Resistor: 8 mW
Voltage Gain: 13.9
Bandwidth: 86 kHz
Refer to Figure 15
U
, N
V
, N
Figure 19.
W
) for current sensing. Refer to reference design
24
Current-Sensing Circuit
FEBSPM3SPM45_M01MTCA • Rev. 1.0.1
RD-344
for a