Features

• Digital controller assisted high performance analog front ends and

fully programmable ARM® Cortex™-M0 processor

- 100 MHz clock, 32-bit, 64 kB OTP, 32 kB RAM, 80 kB ROM

• High performance, low latency digital hardware control loop for single rail up to two phases

• High-speed voltage sense

- 100 MHz 11-bit ADC with 1.25 mV/ LSB

- Up to 2.1 V differential voltage range

- 200 MHz edge detection comparator

• High-speed current sense

- 100 MHz 9-bit ADC with 1 mV/LSB

- Configurable symmetrical positive and negative input voltage range or asymmetrical input

• 6 high-resolution Digital Pulse Width Modulated (DPWM) remappable outputs

- 78.125 ps pulse width resolution

- Adjustable dead-time between pairs for both rising and falling edges with 1.25 ns or 2.5 ns resolution

- Frequency range: 50 kHz to 2 MHz with 5 ns resolution

• 2 High-speed inputs for external fault shutdown or PWM edge control

• PWM edge alignment

- Trailing, leading, and dual-edge modulation

• Configurable feedback control

- Voltage mode, peak current mode

• Configurable modulation methods

- Pulse width modulation, phase shift modulation, frequency modulation

• Up to 11 GPIO pins

• Synchronization with external clock

• 4-channel, 10-bit, 0.926 Msps general purpose ADC

- 2.34 mV/LSB, input voltage range 2.4 V

• Communication peripherals

- 1 MHz I2

C/PMBUS, full duplex SPI, full duplex UART

• 24-pin VQFN packages

• Operating temperature: -40˚C to 125˚C

Typical applications

• Isolated/ non-isolated DC-DC PWM converters

• LLC converters

• Intermediate bus converters for Datacenter / computing system

• Power supplies for Telecom infrastructure/ Brick modules

Application features

• Soft start with pre-bias (non-resonant topologies)

• Feed forward compensation for PWM topologies

• Active current sharing

• LLC features

- Hybrid soft start: PWM or phase-shift at the maximum frequency and frequency sweep

- Adaptive SR turn-off based on VDS sensing

- Light load operation including:

o Burst mode at the maximum frequency

o Diode emulation (DE) mode

o Phase Shift duty cycle reduction at the maximum frequency for full-bridge LLC

• High efficiency and light load management

- Burst mode (except ACF topology)

- Phase dropping (interleave topologies)

• Flux balancing

• Phase current balancing

• Configurable non-linear PID and Fast Transient Response (FTR)

• Feature rich fault protections

- Programmable over and under voltage protection (OVP, UVP) thresholds and response

- Programmable over and under current protection (OCP, UCP) thresholds and response

- Programmable fast over-current protection and short circuit protection

- Programmable over and under temperature protection (OTP, UTP) thresholds and hysteresis

- Programmable positive/ negative peak current limit threshold

- Internal and external temperature sensor

- Feedback open loop protection

- Programmable blanking time