PAC5210 datasheet(21/66 Pages) ACTIVE-SEMI

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PAC5210

Power Application Controller

10. MULTI-MODE POWER MANAGER (MMPM)

10.1. Features



Multi-mode switching supply controller configurable as high voltage or ultra-high-voltage buck, AC/DC flyback



DC supply up to 52V or line AC input



4 linear regulators with power and hibernate management



Power and temperature monitor, warning, and fault detection

10.2. Block Diagram

10.3. Functional Description

The Multi-Mode Power Manager (Figure 10-1) is optimized to efficiently provide "all-in-one" power management

required by the PAC and associated application circuitry from a wide range of input power sources. It

incorporates a dedicated multi-mode switching supply (MMSS) controller operable as a buck, flyback, or boost

converter to efficiently convert power from a DC or AC input source to generate a main supply output V P. Four

linear regulators provide VSYS, VCCIO, VCC33, and VCC18 supplies for 5V system, 5V or 3.3V I/O, 3.3V mixed signal,

and 1.8V microcontroller core circuitry. The power manager also handles system functions including internal

reference generation, timers, hibernate mode management, and power and temperature monitoring.

10.3.1. Multi-Mode Switching Supply (MMSS) Controller

The MMSS controller drives an external power transistor for pulse-width modulation switching of an inductor or

transformer for power conversion. The DRM output drives the gate of the n-channel MOSFET or the base of the

NPN between the VHM on state and VSSP off state at proper duty cycle and switching frequency to ensure that the

main supply voltage VP is regulated. The VP regulation voltage is initially set to 9V during start up, and can be

- 21 -

Rev 1.6‒April 15, 2016

Figure 10-1. Multi-Mode Power Manager

IMOD

DAC

CSM

CURR

SENSE

DRM

DRIVER

MULTI-MODE POWER MANAGER

VHM

VSSP

PWM

LOGIC

ERROR

AMP

LINEAR

REG

VCCIO

LINEAR

REG

VCC33

LINEAR

REG

VCC18

SYSTEM

SUPPLY

REG

VOLTAGE

SETTING

REGO

VSYS

COMP &

CURR LIMIT

CLAMP

ERROR

COMP

MULTI-MODE SWITCHING

SUPPLY CONTROLLER

POWER

OK & OVP

START UP &

MODE CTRL

1.2V

HIBERNATE

2.5V V

REF

TIMERS

POWER

& TEMP

MON

VSSA

VSS

MON

THREF

TEMP

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