AN2829 datasheet(21/32 Pages) STMICROELECTRONICS

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AN2829 数据表(PDF) 21 Page - STMicroelectronics

部件名	AN2829

功能描述	Dual step-down controller with auxilary voltages

PDF	32 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

21 / 32 page

AN2829

Test setup and performance summary

21/32

Figure 11.

Section 1 shutdown waveforms

Figure 12.

Section 2 shutdown waveforms

11.4

1.5 V and 1.05 output efficiency vs. load current

Figure 13 and 14 show the efficiency versus load current at different input voltage values in

PWM mode, skip mode and no audible skip mode. Three different input voltages are used:

●

Blue: VIN=9 V

●

Green: VIN=12 V

●

Red: VIN=18 V

AM01417v1

OUT1

Lgate1

EN1

AM01418v1

OUT2

Lgate2

EN2

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