Intersil has designed a new family of single-ended current-mode PWM controllers to improve performance of AC/DC and 48V DC/DC convertors widely used in telecoms, datacoms and server applications. Devices in its ISL684x family are high-performance pin-for-pin upgrades for industry standard products, it says. The ISL684x family PWM controllers offer a number of significant performance advantages. The 5 MHz error amplifier bandwidth is five times wider than industry standard, enabling fast transient response, which reduces the need for expensive and bulky output capacitors. The internal voltage reference has 1% accuracy over line, load, and temperature and is accurate enough to replace an external voltage reference, while the fast 40 ns peak-current-sensing time is notable.
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