AS3722 datasheet(127/199 Pages) AMSOSRAM

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Page 126

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[v1-01] 2015-Sep-07

AS3722 − Register Description

Figure 127:

SD23_control

Addr:2ch

SD23_control

Bit

Bit Name

Default

Access

Bit Description

sd3_fast

RW_SS

Selects a faster regulation mode for SD3 suitable

for larger load changes.

0 : normal mode, Cout (according spec)

1 : fast mode, 2 x Cout (according spec) required

sd3_force_pwm

Selects force pwm mode

0 : normal mode

1 : force pwm, inverted coil current possible to

keep the fixed frequency

sd3_low_noise

Enables low noise mode of SD3. If enabled smaller

current pulses and output ripple is activated

0 : Normal mode. Minimum current pulses of about

10% the current limit are applied in skip mode

1 : Low noise mode. Only minimum on time

applied in skip mode

sd2_fast

RW_SS

Selects a faster regulation mode for SD2 suitable

for larger load changes.

0 : normal mode, Cout (according spec)

1 : fast mode, 2 x Cout (according spec) required

sd2_force_pwm

Selects force pwm mode

0 : normal mode

1 : force pwm, inverted coil current possible to

keep the fixed frequency

sd2_low_noise

Enables low noise mode of SD2. If enabled smaller

current pulses and output ripple is activated

0 : Normal mode. Minimum current pulses of about

10% the current limit are applied in skip mode

1 : Low noise mode. Only minimum on time

applied in skip mode

AS3722 Datasheet(PDF) 127 Page - ams-OSRAM AG

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