Electronic Design

Power Manager Minds W-CDMA Power Amps

The RF6650, a pulse-width modulated (PWM), voltage-mode controlled dc/dc converter, supplies power to W-CDMA power amplifiers. Supplying up to 650 mA in PWM-controlled or bypass modes, its output voltage is continuously programmable through a VSET analog input pin. Other features include an efficiency greater than 95% a transient response of less than 25 ms, 650-mA load current capability, programmable output voltage, and a bypass FET. Pricing begins at $1.43 each/25. RF MICRO DEVICES INC., Greensboro, NC. (336) 664-1233.

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