MCP16501 datasheet(26/42 Pages) MICROCHIP

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MCP16501

DS20006388E-page 26

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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 as shown in

Table 4-5 can be taken into account to define other

device options.

Note:

[1,2,3] – refers to each individual Buck channel setting.

Note:

Contact your nearest Microchip Sales

Office for further assistance on the

development

customized

device

variants.

TABLE 4-5:

DEVICE CONFIGURATION

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 resolution.

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]

Start-up 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:0 ms, 0.5 ms, 1 ms, 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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