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See Technical Specifications

UCC38502DWTR +BOM

PFC/PWM Combination controller with 16V/10V VCC UVLO and 6.75V/3.75V PWM UVLO, 0°C to 70°C

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

UCC38502DWTR
Datasheet:

UCC38502DWTR Datasheet (PDF)
Mode:

Average Current
Frequency - Switching:

100kHz
Current - Startup:

150 µA
Voltage - Supply:

9.7V ~ 18V
EDA/CAD Models:

Request Free CAD Models for UCC38502DWTR

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UCC38502DWTR General Description

Featuring a line feedforward mechanism for a wide range of input voltages, the UCC28502DWTR ensures constant input power despite variations in input voltage. This controller incorporates a low offset-voltage amplifier, a high-bandwidth multiplier, a noise-attenuation configuration, and over-voltage protection in the PFC section. The dc-to-dc section includes current limiting, soft-start capabilities, and a preset operating range with selectable options. With a wide PFC-UVLO threshold, this controller is suitable for bootstrap bias supply operation

Key Features

Combines PFC and Downstream Converter Controls
Controls Boost Preregulator to Near-Unity Power Factor
Accurate Power Limiting
Improved Feedforward Line Regulation
Peak Current-Mode Control in Second Stage
Programmable Oscillator
Leading-Edge/Trailing-Edge Modulation for Reduced Output Ripple
Low Start-up Supply Current
Synchronized Second Stage Start-Up, with Programmable Soft-start
Programmable Second Stage Shutdown

Specifications

Category	Integrated Circuits (ICs)Power Management (PMIC)PFC (Power Factor Correction)	Series	-
Mode	Average Current	Frequency - Switching	100kHz
Current - Startup	150 µA	Voltage - Supply	9.7V ~ 18V
Operating Temperature	0°C ~ 70°C	Mounting Type	Surface Mount
Base Product Number	UCC38502	Topology	Boost
Control mode	CCM	Switching frequency (max) (kHz)	200
UVLO thresholds on/off (V)	16/10	Vin (max) (V)	18
Features	< 150 W applications, Average current mode, Continuous Control Mode, Enable, Overvoltage protection, Supports Flyback	Rating	Catalog
Operating temperature range (°C)	0 to 70	Duty cycle (max) (%)	100
feature-type	Power Factor Correction and PWM Controller	feature-operation-mode	CCM
feature-topology	Boost	feature-minimum-operating-supply-voltage-v
feature-maximum-operating-supply-voltage-v	18	feature-start-up-supply-current-ma	0.15
feature-switching-frequency-khz	200	feature-maximum-duty-cycle-	100
feature-packaging	Tape and Reel	feature-rad-hard
feature-pin-count	20	feature-cecc-qualified	No
feature-esd-protection		feature-military	No
feature-aec-qualified	No	feature-aec-qualified-number
feature-eccn-code	EAR99	feature-svhc	No
feature-svhc-exceeds-threshold	No