DFE252012P-2R2M datasheet(27/44 Pages) MICROCHIP

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DS20006388A-page 27

MCP16501

4.5

Configuration Options

The device variants highlighted in Section 4.0

“Device Options” are generated at the factory with

One-Time-Programmable memory, which configures

default settings at power-up.

To accommodate future possible MPUs or application

architectures the following configurations can be taken

into account to define other device options.

TABLE 4-5:

DEVICE CONFIGURATION

Note 1: [1,2,3]-refers to each individual Buck channel setting

Note:

Please contact your nearest Microchip

Sales Office for further assistance on the

development of customized device vari-

ants.

Setting

Description

RSTDLY

nRSTO assertion delay (t4 in the start-up sequence); options are: 1 ms, 2 ms, 4 ms, 8 ms,

16 ms, 32 ms, 64 ms and 128 ms; default is 16 ms

AWKPDIS

Enables or disables the automatic wake-up pulse; default is enabled

VOUT[1,2,3]

Buck output voltage, Buck1 output range is between 1.2V and 3.7V with a 50 mV resolution,

while Buck2 and Buck3 have an output range between 0.6V and 1.85V with a 25mV resolu-

tion

EN[1,2,3]

Enables or disables each Buck converters for all individual power state

MODE[1,2,3]

FPWM or Auto PFM for each Buck converters for all individual power state

SSR[1,2,3]

Soft Start rate for Buck converters; options are: 3.125 V/ms, 1.563 V/ms, 1.042 V/ms and

0.781 V/ms; default is 3.125 V/ms

SEQ[1,2,3]

Startup sequence step for each Buck converter

DELAY[1,2,3]

Time delay from the completion of the previous Start-Up Sequence Step or Start-Up Event

to the turn-on (beginning of Soft Start); options are:0ms, 0.5ms, 1ms, 2 ms, 4 ms, 8 ms,

12 ms, 16 ms

B1HCEN

Enables or disables the Hysteretic Control Mode for Buck1 in AutoPFM operation; only

enabled for MCP16501E

HCPEN[1,2,3]

Enables or disables the Hiccup short-circuit protection for each Buck converter; default is

enabled with the exception of MCP16501D. When disabled, a short circuit will cause the

immediate turn-off of all channels followed by a 100 ms wait time and an automatic restart

sequence.

DISCH[1,2,3]

Enables or disables the active output discharge when the channel is turned off; default is

enabled

PHASE[1,2,3]

Enables operation 180° out of phase with the oscillator for each Buck

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