Module spare parts UR6DH

Product Details

Product Description

Product Description
Focus on DCS, PLC, robot control system and large servo system.
Main products: various modules / cards, controllers, touch screens, servo drivers.
Advantages: supply of imported original products, professional production parts,
Fast delivery, accurate delivery time,
The main brands include ABB Bailey, Ge / fuanc, Foxboro, Invensys Triconex, Bently, A-B Rockwell, Emerson, ovation, Motorola, xyvom, Honeywell, Rexroth, KUKA, Ni, Deif, Yokogawa, Woodward, Ryan, Schneider, Yaskawa, Moog, prosoft and other brands

UR6DH

and D, the duty cycle is equal to (VOUT − VIN)/VOUT. The ESR and ESL of the output capacitor directly control the output ripple. Use capacitors with low ESR and ESL at the output for high efficiency and low ripple voltage. Surface mount tantalums, surface mount polymer electrolytic and polymer tantalum, Sanyo- OSCON, or multi-layer ceramic capacitors are recommended at the output. 8.2.1.2.9 Driver Supply Capacitor Selection A good quality ceramic bypass capacitor must be connected from the VCC pin to the PGND pin for proper operation. This capacitor supplies the transient current required by the internal MOSFET driver, as well as filtering the internal supply voltage for the controller. A value of between 0.47 µF and 4.7 µF is recommended. 25 LM3481, LM3481-Q1 SNVS346F –NOVEMBER 2007–REVISED NOVEMBER 2014 Product Folder Links: LM3481 LM3481-Q1 Copyright © 2007–2014, Texas Instruments Incorporated Submit Documentation Feedback Typical Applications (continued) 8.2.1.2.10 Compensation For detailed explanation on how to select the right compensation components to attach to the compensation pin for a boost topology please see AN-1286 Compensation for the LM3478 Boost Controller (SNVA067). When calculating the Error Amplifier DC gain, AEA, ROUT = 152 kΩ for the LM3481. 8.2.1.3 Application Curve Figure 35. Start-Up Pattern for a 5-Vin, 12-Vout Boost Converter Using LM3481 Boost Evaluation Module (C1: Inductor Current, C2: Vin, C3:Vout) LM3481 ISEN VIN COMP FB AGND UVLO VCC DR PGND FA/SYNC/SD + + VIN = 3.0V to 24V VOUT = 5V, 1A CIN 15 PF, 35V x2 COUT 100 PF, 10V 1 PF, ceramic RSEN 0.05: L1 10 PH L2 10 PH 0.47 µF MBRS130LT3 RFA 40 k: CSEN 1 nF Q1 IRF7807 CS RC 4.7 k: CC 0.1 PF RF1 60 k: RF2 20 k: R7 10 k: D2 5.1V D1 26 LM3481, LM3481-Q1 SNVS346F –NOVEMBER 2007–REVISED NOVEMBER 2014 Product Folder Links: LM3481 LM3481-Q1 Submit Documentation Feedback Copyright © 2007–2014, Texas Instruments Incorporated Typical Applications (continued) 8.2.2 Typical SEPIC Converter Figure 36. Typical SEPIC Converter using LM3481 Because the LM3481 controls a low-side N-Channel MOSFET, it can also be used in SEPIC (Single Ended Primary Inductance Converter) applications. An example of SEPIC using the LM3481 is shown in Figure 36. As shown in Figure 36, the output voltage can be higher or lower than the input voltage. The SEPIC uses two inductors to step-up or step-down the input voltage. The inductors L1 and L2 can be two discrete inductors or two windings of a coupled transformer because equal voltages are applied across the inductor throughout the switching cycle. Using two discrete inductors allows use of catalog magnetics, as opposed to a custom transformer. The input ripple can be reduced along with size by using the coupled windings of transformer for L1 and L2. Due to the presence of the inductor L1 at the input, the SEPIC inherits all the benefits of a boost converter. One main advantage of SEPIC over a boost converter is the inherent input to output isolation. The capacitor CS isolates the input from the output and provides protection against shorted or malfunctioning load. Hence, the SEPIC is useful for replacing boost circuits when true shutdown is required. This means that the output voltage falls to 0V when the switch is turned off. In a boost converter, the output can only fall to the input voltage minus a diode drop. The duty cycle of a SEPIC is given by: (43) In Equation 43, VQ is the on-state voltage of the MOSFET, Q1, and VDIODE is the forward voltage drop of the diode. 8.2.2.1 Design Requirements To properly size the components for the application, the designer needs the following parameters: Input voltage range, output voltage, output current range and required switching frequency. These four main parameters will affect the choices of component available to achieve a proper system behavior. 8.2.2.2 Detailed Design Procedure 8.2.2.2.1 Power MOSFET Selection As in a boost converter, the parameters governing the selection of the MOSFET are the minimum threshold voltage, VTH(MIN), the on-resistanc