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UCC28070-Q1
  • UCC28070-Q1

UCC28070-Q1

ACTIVE

Automotive two-phase interleaved continuous conduction(CCM) mode PFC controller

Texas Instruments UCC28070-Q1 Product Info

1 April 2026 3

Parameters

Topology

Boost, PFC controller

Control mode

CCM

Features

Automotive qualified, Feed-forward Correction, Frequency Dithering, Interleaved, Programable Switching Frequency, Programmable Soft-start, Synchronizable

Duty cycle (max) (%)

98

Package

TSSOP (PW)-20-41.6 mm² 6.5 x 6.4

Features

  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1, TA: –40°C to 125°C
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C4
  • Interleaved average current-mode PWM control with inherent current matching
  • Advanced current-synthesizer current sensing for superior efficiency
  • Synchronization capability to external clock
  • Highly-linear multiplier output with internal quantized voltage feed-forward for near-unity PF
  • Enhanced transient response through slew-rate correction of voltage amplifier output current
  • Programmable frequency (30kHz to 300kHz)
  • Programmable maximum duty-cycle clamp
  • Programmable frequency-dithering rate and magnitude (up to 30kHz) for EMI reduction
  • Programmable soft-start
  • Programmable peak current limiting
  • External PFC-disable interface
  • Protections: bias-supply UVLO, output overvoltage, open‑loop detection, open-circuit detection on VSENSE and VINAC, and PFC-enable monitoring
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1, TA: –40°C to 125°C
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C4
  • Interleaved average current-mode PWM control with inherent current matching
  • Advanced current-synthesizer current sensing for superior efficiency
  • Synchronization capability to external clock
  • Highly-linear multiplier output with internal quantized voltage feed-forward for near-unity PF
  • Enhanced transient response through slew-rate correction of voltage amplifier output current
  • Programmable frequency (30kHz to 300kHz)
  • Programmable maximum duty-cycle clamp
  • Programmable frequency-dithering rate and magnitude (up to 30kHz) for EMI reduction
  • Programmable soft-start
  • Programmable peak current limiting
  • External PFC-disable interface
  • Protections: bias-supply UVLO, output overvoltage, open‑loop detection, open-circuit detection on VSENSE and VINAC, and PFC-enable monitoring

Description

The UCC28070-Q1 is an advanced power factor correction (PFC) controller that integrates two pulse-width modulators (PWMs) operating interleaved by 180° in CCM boost-mode. Derived from the UCC28070, this device can switch at frequencies from 30kHz up to 300kHz.

The 180° out-of-phase interleaved operation results in substantial reduction of high-frequency input and output ripple currents and conducted-EMI filtering becomes easier and less expensive.

The UCC28070-Q1 features multiple innovations including current synthesis and quantized voltage feedforward to promote performance enhancements in PF, efficiency, THD, and transient response. In addition, frequency dithering, clock synchronization, and slew-rate enhancement further expand the potential for performance improvements. Also, protection features include output overvoltage detection, programmable peak-current limit, undervoltage lockout, and open-loop protection.

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