TI UCD3138064RGCR

UCD3138064 is a digital power controller that delivers high integration and exceptional performance in a single-chip solution. Compared to the UCD3138 digital power controller, the UCD3138064 provides 64kB of program flash memory (versus 32kB in the UCD3138), along with additional communication options such as SPI and a second I2C port. The availability of 64kB program flash memory organized as 2 - 32kB banks enables designers to implement dual-image firmware in the device (e.g., one primary image + one backup image), with the flexibility to execute from either bank using an appropriate algorithm. It also creates a unique opportunity for the processor to load a new program and subsequently execute it without interrupting power delivery. This feature allows end users to add new features to the power supply in the field while eliminating any downtime required to load a new program.

The flexible features of the UCD3138064 make it suitable for a wide range of power conversion applications. In addition, the various on-chip peripherals have been specifically optimized to enhance AC/DC and isolated DC/DC application performance and reduce solution component count in IT and network infrastructure spaces. The UCD3138064 is a fully programmable solution that gives users complete control over their applications and extensive capability to differentiate their solutions.

At the core of the UCD3138064 controller is the Digital Power Peripheral (DPP). Each DPP implements a high-speed digital control loop consisting of a dedicated error ADC (EADC), a PID based on a 2-pole 2-zero digital compensator, and a DPWM output with 250ps pulse width resolution. The device also includes a 12-bit, 267ksps general-purpose ADC with up to 14 channels, timers, interrupt control, PMBus, I2C, SPI, and UART communication ports. The device is based on a 32-bit ARM7TDMI-S RISC microcontroller that performs real-time monitoring, configures peripherals, and manages communications. The ARM microcontroller executes its program from programmable flash memory as well as on-chip RAM and ROM.

In addition to the DPP, dedicated power management peripherals have been added to enable high efficiency across the full operating range, high integration for increased power density, reliability, lowest overall system cost, and high flexibility supporting the widest range of control architectures and topologies. These peripherals include: light-load burst mode, synchronous rectification, LLC and phase-shifted full-bridge mode switching, input voltage feed-forward, copper trace current sensing, ideal diode emulation, constant current/constant power control, synchronous rectification soft turn-on and turn-off, peak current mode control, flux balancing, secondary-side input voltage sensing, high-resolution current sharing, hardware-configurable soft-start with pre-bias, and a magnetic field sensing solution, among several other features. Topology support has been optimized for voltage mode and peak current mode controlled phase-shifted full bridge, single- and two-phase PFC, bridgeless PFC, hard-switching full bridge and half bridge, and LLC half bridge and full bridge.

• 64kB derivative program flash of the UCD3138 series – 2 - 32kB program flash memory banks support execution from bank 1 while programming other banks
• Firmware update without powering down
• Additional communication ports compared to UCD3138 (SPI, I2C)
• RGC package pin-to-pin compatible with UCD3138 (SLUSAP2B)
• Digital control of up to 3 independent feedback loops
• Dedicated PID-based hardware
• 2-pole/2-zero configurable, nonlinear control
• Up to 16MHz error ADC (EADC)
• Configurable resolution (minimum: 1mV/LSB)
• Up to 8x oversampling and adaptive trigger configuration
• Hardware-based averaging (up to 8x)
• 14-bit high-efficiency DAC
• Up to 8 high-resolution DPWM outputs
• 250ps pulse width resolution
• 4ns frequency and phase resolution
• Adjustable phase shift and dead band
• Cycle-by-cycle duty cycle matching
• Up to 2MHz switching frequency
• Configurable trailing edge/leading edge/triangular modulation
• Configurable feedback control
• Voltage, average current, and peak current mode control
• Constant current, constant power
• Configurable FM, phase shift modulation, and PWM
• Fast, automatic, and smooth mode switching
• Frequency modulation and PWM
• Phase shift modulation and PWM
• High efficiency and light load management
• Burst mode & ideal diode emulation
• Synchronous rectifier soft turn-on/turn-off
• Low IC standby power
• Primary-side voltage sensing flux and phase current balancing (for non-peak current mode control applications)
• Current sharing (average & master/slave)
• Extensive fault protection options
• 7 analog / 4 digital comparators
• Cycle-by-cycle current limiting
• Programmable blanking time and fault count
• External fault input
• DPWM waveform synchronization across multiple UCD3138064 devices
• 14-channel, 12-bit, 267ksps general-purpose ADC with integrated programmable averaging filter and dual sample-and-hold
• Internal temperature sensor
• Fully programmable high-performance 31.25MHz, 32-bit ARM7TDMI-S processor
• 64kB program flash (2 - 32kB banks)
• 2kB data flash with ECC
• 4kB data RAM
• 8kB boot ROM for firmware boot-loading
• Communication peripherals
• 1 - I2C/PMBus, 1 - I2C (master mode only)
• 2 - UART
• 1 - SPI
• Timer capture with optional input pins
• Built-in safety features: BOD and POR
• 64-pin QFN and 40-pin QFN packages
• Operating temperature: -40°C to 125°C
• Fusion Digital Power Studio GUI support

• Power and telecom rectifier power factor correction
• Standalone DC-DC modules