Basic formulae are derived for the step response of a series RC circuit in which both the resistance and capacitance are non-linear. The initial condenser voltage is assumed arbitrary, and a careful distinction is made between the charging and discharging cases. A detailed treatment is given for...
OPTI-LOOP® com- pensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC3895 features a precision 0.8V reference and power good output indicator. The output voltage can be programmed between 0.8V to 60V using external resistors ...
For best stability and response performance, the closed-loop unity-gain fre- quency (fC) should be approximately 140kHz (one- tenth the switching frequency). Use the following equation to calculate RC: RC = COUT CC × VOUT 0.5 × IOUT(MAX) Below is a numerical example of calculating com...
±1 % voltage reference – Selectable 1.5 V fixed output voltage – Adjustable 0.6 V to 3.3 V output voltage – 1.237 V ±1 % reference voltage available – Very fast load transient response using constant-on-time control loop – No RSENSE current sensing using low side MOSFETs' RDS(ON) ...
Figure 9. Fast load transient response Propagation delay time of the comparator has to be minimized to speed up device reaction to a fast step load but, once the ON-phase is triggered, the faster the coil ramp current slope, the lower the output voltage drop. For this reason, the lower ...
For step-up and flyback regulators, the formula for ripple current is (11) Choose a capacitor that is rated at least 50% higher than this value at 52 kHz. Equivalent Series Resistance (ESR) : This is the primary cause of output ripple voltage, and it also affects the values of RC ...
During PWM operation the converter uses a unique fast response voltage mode controller scheme with input voltage feed−forward to achieve good line and load regulation, allowing the use of small ceramic input and output capacitors. At the beginning of each clock cycle initiated by the clock ...
In addition, a passive clamp circuit was used to recover the leakage energy and improve the voltage spike across the switch. In15, a SEPIC DC-DC converter is presented. The structure of this converter includes voltage multiplier cells to increase the output voltage gain. Besides, the passive ...
Date Code DS8295B-03 March 2011 www.richtek.com 1 RT8295B Typical Application Circuit VIN 4.5V to 23V CSS 0.1µF 1C0INµF REN 100k 2 VIN BOOT 1 RT8295B SW 3 7 EN 8 SS FB 5 4, 9 (Exposed Pad) GND COMP 6 CBOOT L 100nF 3.6µH CC 0.82nF RC 32k R1 75k R2 24k ...
0.8V to 5.5V n ±1.5% Maximum Total DC Output Error n Current Mode Control/Fast Transient Response n Frequency Synchronization n Output Overvoltage and Overcurrent Protection n Multiphase Operation with Current Sharing on VOUT1 and VOUT2 n General Purpose Temperature Monitors n Soft-Start/Voltage...