UM0670 datasheet(14/43 Pages) STMICROELECTRONICS

номер детали	UM0670

подробное описание детали	80 W offline LED driver with PFC

PDF	43 Pages

Scroll/Zoom	100%

производитель	STMICROELECTRONICS [STMicroelectronics]

домашняя страница	http://www.st.com

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UM0670

STEVAL-ILL013V1 performance

Doc ID 15327 Rev 2

14/43

STEVAL-ILL013V1 performance

Figure 8 shows the efficiency of the STEVAL-ILL013V1 (measured also with an external

PWM generator) for the output LED current 350 mA, 700 mA and 1 A, over the entire input

voltage range.

Measured efficiency for the input voltage of 230 V was above 90% (90.49% for the 350 mA

output LED current, 90.53% for the 700 mA output LED current, and 90.3% for the 1 A

output LED current)

Efficiency for the input voltage of 110 V was above 87% (88.05% for the 350 mA output LED

current, 88.2% for the 700 mA output LED current and 87.37% for the output LED current of

1 A).

Measured PF for the output LED current of 350 mA, 700 mA and 1 A is shown in Figure 9

and Figure 10. PF for the input voltage of 110 VAC is 0.99, and 0.98 for the input voltage of

230 VAC.

THD is demonstrated in Figure 11, and as it can be observed is below 12% over the whole

input voltage range.

Note:

LE UW E3B OSTAR® LEDs from OSRAM were used as the load (see Section 11:

References and related materials: 6.).

Figure 8.

Efficiency over the whole input voltage range

0.00

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100 110 120 140 160 180 200 220 230 240 265

Input v oltage [V]

Efficiency [%]

700 mA at 6 LEDs

350 mA at 12 LEDs

1 A at 4 LEDs

AM00395

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