PAC5255
Power Application Controller
1. GENERAL DESCRIPTION
The PAC5255 belongs to Active-Semi's broad portfolio of full-featured Power Application Controller® (PAC) products that
are highly optimized for controlling and powering next generation smart energy appliances, devices, and equipment. These
application controllers integrate a 50MHz ARM© Cortex®-M0 32-bit microcontroller core with Active-Semi's proprietary
and patent-pending Multi-Mode Power ManagerTM, Configurable Analog Front EndTM, and Application Specific Power
DriversTM to form the most compact microcontroller-based power and general purpose application systems ranging from
digital power supply to motor control. The PAC5255 microcontroller features up to 32kB of embedded FLASH and 8kB of
SRAM memory, a high-speed 10-bit 1ms analog-to-digital converter (ADC) with dual auto-sampling sequencers, 5V/3.3V
I/Os, flexible clock sources, timers, a versatile 14-channel PWM engine, and several serial interfaces.
The Multi-Mode Power Manager (MMPM) provides “all-in-one” efficient power management solution for multiple types
of power sources. It features a configurable multi-mode switching supply controller capable of operating in buck, flyback,
or boost mode, and up to four linear regulated voltage supplies. The Application Specific Power Drivers (ASPD) are high-
voltage and ultra-high-voltage power drivers designed for each target set of control applications, including half bridge, H-
bridge, 3-phase, intelligent power module (IPM), and general purpose driving. The Configurable Analog Front End (CAFE)
comprises differential programmable gain amplifiers, single-ended programmable gain amplifiers, comparators, digital-to-
analog converters, and I/Os for programmable and inter-connectible signal sampling, feedback amplification, and sensor
monitoring of multiple analog input signals. Together, these modules and microcontroller enable a wide range of compact
applications with highly integrated power management, driving, feedback, and control for DC supply up to 52V and for line
AC supply.
In addition, this device contains a 2nd clock source that can be configured to be output on a device pin, for various
application uses. This pin may be routed to a digital input pin on the MCU to support clock sampling, without adding any
additional PCB components. This helps implement safety standards such as IEC 60730 Class B Safety.
Figure 1-1. Power Application Controller
PWM ENGINE
MULTI-MODE
POWER MANAGER
SERIAL
INTERFACE
16-bit timers,
HW dead-time control,
10ns resolution control
AC/DC, DC/DC,
linear regulators
SPI, I22C, UART
APPLICATION
SPECIFIC POWER
DRIVERS
50MHz ARM CORTEX-M0
MICROCONTROLLER CORE & MEMORY
1-cycle 32-bit multiplier,
24-bit RTC, 24-bit WDT, 24-bit SysTick, NVIC,
FLASH & SRAM
ultra-high voltage high-
side gate drivers,
low-side gate drivers,
MV open-drain drivers
CONFIGURABLE ANALOG FRONT END
DATA ACQUISITION
& SEQUENCER
3 differential PGAs,
4 single-ended PGAs,
10 Comparators,
2 DACs (10-bit & 8-bit),
Temperature monitor
10-bit 1µs ADC,
dual auto-sampling
sequencer
The PAC5255 is available in a 57-pin 10x10 TQFN package. The PAC family includes a range of part numbers optimized
to work with different targeted primary applications.
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Rev 1.10‒March 3, 2018
ACTIVE-SEMI [ ACTIVE-SEMI, INC ]
