If the controller is in current limit and VOUT drops to less 50% of regulation, the current limit set-point "folds back" to progressively lower values. To recover from foldback current limit, the excessive load or low impedance short needs to be removed. When RUN is less than 0.7V, the...
Applying capacitor values below those indi- cated in Table 1 is not recommended, and may result in undesirable operation. Using larger values is generally acceptable, and can yield improved dynamic response, if it is necessary. Again, it is incumbent upon the user to verify proper operation ...
The monitor count registers support 17-bit count values, which will support at least a gap length of two clock periods for any supported input reference frequency, with longer gaps being supported for faster input reference frequencies. Using this configuration for a gapped clock, the PLL will ...
SIMPLIFIED RESISTOR DIVIDER ADC FN8696 Rev.5.01 Feb 16, 2023 Page 10 of 32 ISL68201 The RUP and RDW values for a particular parameter set can be found using the PowerNavigator GUI. Data for corresponding registers can be read out using the serial PMBus command (DC to DF). Note: The ...
Values between 4.7μH and 22μH will suffice for most applications. Inductor manufacturers specify the maximum current rating as the current where inductance falls by a given percentage of its nominal value. An inductor can pass a current greater than its rated value without damaging it. Consult...
If a precise overcurrent trip point is not necessary, then a nonprecision resistor or even a mea- sured PCB trace can serve as RS. The major cause of drift in resistor values with such resistors is temperature coefficient; the designer should be aware that a linear, 500 ppm/°C change ...
L ≥PRI VIN(MAX) • RSENSE•tON(MIN) VSENSE(MIN) (8) tON(MIN) = Minimum switch-on time = 200ns In general, choose a transformer with its primary magnetizing inductance about 30% larger than the values calculated above. A transformer with much larger inductance has a bigger physical ...
Any frequency between these two limits (6:1 maximum to minimum frequency) is obtainable by linearly scaling the RT resistance between the minimum 22.2-kΩ and maximum 133.3-kΩ values. The secondary-side PWM frequency should be fixed at (1 / 0.9) or 1.11 times the user programmed ...
Choosing smaller values of ΔISW increases output current capability, but requires large inductances and reduces the current loop gain (the converter will approach voltage mode). Accepting larger values of ΔISW provides fast transient response and allows the use of low inductances, but results ...
N-Diphenyl-N,N′ bis(methylphenyl)-1,1′-biphenyl-4,4′-diamines (TPD) (T g = 330 K), a prototypical organic hole-transport molecule widely used in electronic applications, deposited at different substrate temperatures, covering a wide range of density values and average molecular ...