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UC28023DW 数据表(PDF) 8 Page - Texas Instruments |
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UC28023DW 数据表(HTML) 8 Page - Texas Instruments |
8 / 18 page UC28023 UC28025 SLUS557B − MARCH 2003 − REVISED APRIL 2004 8 www.ti.com APPLICATION INFORMATION PCB LAYOUT CONSIDERATIONS High speed circuits demand careful attention to layout and component placement. To assure proper performance of the UC2802x follow these rules: 1. Use a ground plane. 2. Damp or clamp parasitic inductive kick energy from the gate of driven MOSFETs. Do not allow the output pins to ring below ground. A series gate resistor or a shunt 1-A Schottky diode at the output pin serves this purpose. 3. Bypass VCC, VC, and VREF. Use 0.1- µF monolithic ceramic capacitors with low equivalent series inductance. Allow less than 1-cm of total lead length for each capacitor between the bypassed pin and the ground plane. 4. Treat the timing capacitor, CT, as a bypass capacitor. ERROR AMPLIFIER Figure 2 shows a simplified schematic of the UC2802x error amplifier and Figures 3 and 4 show its characteristics. UDG−03049 200 Ω INV NI VREF EAOUT 2 1 16 3 5.1 V Figure 2. Simplified Error Amplifier Schematic |
类似零件编号 - UC28023DW |
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类似说明 - UC28023DW |
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