APW8821 datasheet(8/24 Pages) ANPEC

Part #	APW8821

Description	Notebook PWM Controller with Differential Voltage Feedback

PDF	24 Pages

Scroll/Zoom	100%

Manufacturer	ANPEC [Anpec Electronics Coropration]

Direct Link	http://www.anpec.com.tw

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8 / 24 page

Rev. A.1 - Feb., 2011

APW8821

www.anpec.com.tw

Operating Waveforms (Cont.)

Refer to the typical application circuit. The test condition is V

IN=19V, TA=25

oC unless otherwise specified.

CH2: VLGATE, 5V/Div, DC

CH3: VOUT, 50mV/Div, AC

TIME: 2μs/Div

CH1: VPHASE, 20V/Div, DC

CH4: Iout, 10A/Div, DC

Operating at PFM Mode

CH2: VLGATE, 5V/Div, DC

CH3: VOUT, 50mV/Div, AC

TIME: 2μs/Div

CH1: VPHASE, 20V/Div, DC

CH4: IOUT, 20A/Div, DC

Operating at PWM Mode

Current-Limit and UV Protections

CH2: VOUT, 1V/Div, DC

CH3: VPHASE, 20V/Div, DC

TIME: 20μs/Div

CH1: VPOK, 5V/Div, DC

CH4: IL, 20A/Div, DC

Short Circuit Before Enable

CH2: VOUT, 1V/Div, DC

CH3: VPHASE, 10V/Div, DC

TIME: 500μs/Div

CH1: VREFIN, 5V/Div, DC

CH4: IL, 20A/Div, DC

APW8821 Datasheet(PDF) 8 Page - Anpec Electronics Coropration