MCPF1412M06 datasheet(9/63 Pages) MICROCHIP

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MCPF1412M06

Functional Description

Data Sheet

DS60001885C - 9

depends on the output voltage, as shown in the table below. Designers should validate these values

in their specific applications.

VOUT (V)

RBOTTOM (kΩ)

0.72

0.85

9.76

0.9

8.06

0.95

6.81

5.9

1.05

5.23

1.1

4.75

1.2

3.92

1.5

2.55

1.8

1.91

Alternatively, the output voltage can be set using I2C/PMBus™ commands (see PMBus Commands)

or the corresponding user registers, instead of an external resistor divider. The table below lists

VOUT_COMMAND codes to set the specified voltages. The MCPF1412M06 supports this command

with a resolution of 1/256V.

VOUT (V)

VOUT_COMMAND

VOUT (V)

VOUT_COMMAND

0.65

00A7

1.20

0134

0.70

00B4

1.25

0140

0.72

00B9

1.30

014E

0.75

00C0

1.35

015A

0.78

00C8

1.40

0167

0.80

00CD

1.45

0174

0.85

00DA

1.50

0180

0.88

00E2

1.55

018D

0.90

00E7

1.60

019A

0.95

00F4

1.65

01A7

1.00

0100

1.70

01B4

1.05

010D

1.75

01C0

1.10

011A

1.80

01CD

1.15

0127

2.6.

Shutdown Mechanisms

The MCPF1412M06 features two shutdown mechanisms:

1. Hard Shutdown or Load-Dependent Decay:

A valid hard-disable is detected based on the Enable pin, Operation register, ON_OFF_CONFIG

Both drivers are immediately turned OFF, and the soft start is pulled down instantly.

2. Soft-Stop or Controlled Ramp Down:

A valid soft-OFF request is detected based on the Enable pin, Operation register, and

ON_OFF_CONFIG register. After a delay defined by the TOFF_DELAY registers, the SS signal

gradually decreases to 0 over a period specified by the TOFF_FALL registers. The drivers are

disabled only when the SS signal reaches 0, causing the output voltage to follow the SS signal

down to 0.

By default, the device is set for hard shutdown. Shutdown using PVIN is always a hard shutdown.

MCPF1412M06 Datasheet(PDF) 9 Page - Microchip Technology

MCPF1412M06 Datasheet(HTML) 9 Page - Microchip Technology

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