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Part: UCC28511DW
Category:
Power Management
-> PWM Power Supply
-> Power Factor Correction IC's
Description: ti UCC28511, Advanced Pfc/pwm Combination Controllers
Company: Texas Instruments, Inc.
Datasheet: Download UCC28511DW datasheet File size : 266 kB
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Datasheet text preview:
UCC28510, UCC28511, UCC28512, UCC28513, UCC28514, UCC28515, UCC28516, UCC28517
SLUS517- DECEMBER 2002
ADVANCED PFC/PWM COMBINATION CONTROLLERS
FEATURES D Provides Control of PFC and PWM Power D D D D
Stages In One Device Leading-Edge PFC, Trailing-Edge PWM Modulation for Reduced Ripple Built-In Sequencing of PFC and PWM Turn-On 2-A Source and 3-A Sink Gate Drive for Both PFC and PWM Stages Typical 16-ns Rise Time and 7-ns Fall Time into 1-nF Loads
DESCRIPTION
The UCC28510 series of combination PFC/PWM controllers provide complete control functionality for any off-line power system requiring compliance with the IEC1000-3-2 harmonic reduction requirements. By combining the control and drive signals for the PFC and the PWM stages into a single device, significant performance and cost benefits are gained. By managing the modulation mechanisms of the two stages (leading-edge modulation for PFC and trailing-edge modulation for PWM), the ripple current in the boost capacitor is minimized. Based on the average current mode control architecture with input voltage feedforward of prior PFC/PWM combination controllers, these devices offer performance advantages. Two new key PWM features are programmable maximum duty cycle and the 2x PWM frequency options to the base PFC frequency. For the PFC stage, the devices feature an improved multiplier and the use of a transconductance amplifier for enhanced transient response. The core of the PFC section is in a three-input multiplier that generates the reference signal for the line current. The UCC28510 series features a highly linearized multiplier circuit capable of producing a low distortion reference for the line current over the full range of line and load conditions. A low-offset, high-bandwidth current error amplifier ensures that the actual inductor current (sensed through a resistor in the return path) follows the multiplier output command signal. The output voltage error is processed through a transconductance voltage amplifier.
PFC Features
- Average-Current-Mode Control for Continuous Conduction Mode Operation - Highly-Linear Multiplier for Near-Unity Power Factor - Input Voltage Feedforward Implementation - Improved Load Transient Response - Accurate Power Limiting - Zero Power Detect
PWM Features
- - - - - Peak-Current-Mode Control Operation 1:1 or 1:2 PFC:PWM Frequency Options Programmable maximum duty cycle Programmable Soft-Start Two Hysteresis Options for Differing Hold-Up Time Requirements
AVAILABLE OPTIONS
PFC UVLO TURN-ON THRESHOLD (V) 16 10.2 16 10.2 PWM HYSTERESIS (V) 1.45 3.20 PFC:PWM FREQUENCY RATIO 1:1 UCC28510 UCC28511 UCC28512 UCC28513 1:2 UCC28514 UCC28515 UCC28516 UCC28517
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
Copyright 2002, Texas Instruments Incorporated
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UCC28510, UCC28511, UCC28512, UCC28513, UCC28514, UCC28515, UCC28516, UCC28517
SLUS517- DECEMBER 2002
DESCRIPTION (CONTINUED)
The transient response of the circuit is enhanced by allowing a much faster charge/discharge of the voltage amplifier output capacitance when the output voltage falls outside a certain regulation window. A number of additional features such as UVLO circuit with selectable hysteresis levels, an accurate reference voltage for the voltage amplifier, zero power detect, OVP/enable, peak current limit, power limiting, high-current output gate driver characterize the PFC section. The PWM section features peak current mode control (with a ramp signal available to add slope compensation), programmable soft-start, accurate maximum duty cycle clamp, peak current limit and high-current output gate driver. The oscillator for the combination controller is available in two versions. In UCC28510, UCC28511, UCC28512, and UCC28513, the PWM and the PFC circuits are switched at the same frequency. In the UCC28514, UCC28515, UCC28516, and UCC28517, the PWM stage frequency is twice that of the PFC frequency. The PWM stage is suppressed until the PFC output has reached 90% of its programmed value during startup. During line dropout and turn off, the device allows the PWM stage to operate until the PFC output has dropped to 47% (UCC28512, UCC28513, UCC28516, and UCC28517) or 71% (UCC28510, UCC28511, UCC28514, and UCC28515) of its nominal value. See available options table on page 1 for a summary of options. The UCC28510 family also features leading-edge modulation for the PFC stage and trailing-edge modulation for the PWM stage in order to reduce the ripple current in the boost output capacitor. The current amplifier implementation associated with this scheme also results in better noise immunity. Available in 20-pin N and DW packages.
SIMPLIFIED APPLICATION DIAGRAM
PRIMARY SECONDARY + RECT VOUT - + D1 - VAC + BIAS UCC2851X 11 12 13 14 15 Z 16 17 18 19 20 Z REF Z PWRGND GT1 SS2 PKLMT CAOUT ISENSE1 MOUT IAC VFF VREF GT2 VCC ISENSE2 VERR GND CT_BUFF D_MAX VSENSE RT VAOUT 10 9 8 7 6 5 4 + 3 2 1 PWM V-LOOP - REF
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UCC28510, UCC28511, UCC28512, UCC28513, UCC28514, UCC28515, UCC28516, UCC28517
SLUS517- DECEMBER 2002
ABSOLUTE MAXIMUM RATINGS over operating free-air temperature (unless otherwise noted)}
Supply voltage VCC Idle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 V Operating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 V Gate drive current (GT1, GT2) Continuous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.4 A Pulsed Sourcing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -2.5 A Sinking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5 A Maximum GT1, GT2 voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5 V to VCC+0.3 V Input voltage VSENSE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 V to 11 V D_MAX, SS2, CAOUT, ISENSE1, MOUT, VFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5 V to VREF+0.3 V VAOUT, CT_BUFF, ISENSE2, PKLMT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5 V to 6 V Pin Current RT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5 mA VFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -5 mA CT_BUFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 mA VAOUT, VERR, ISENSE2, SS2, CAOUT, IAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 mA Maximum pin capacitance ISENSE2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220 pF Operating junction temperature range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 0C to 150 0C Storage Temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65 0C to 150 0C Lead temperature 1.6mm (1/16 inch from case for 10 seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300 0C Power dissipation PDIP (N) package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 W SOIC (DW) package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.7 W
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect reliability. Currents are positive into, negative out of the specified terminal. All voltages are referenced to GND.
ELECTROSTATIC DISCHARGE (ESD) PROTECTION
PARAMETER Human body model CDM MAX 2.5 0.5 kV UNITS
AVAILABLE OPTIONS{}
OPTIONS PFC:PWM FREQUENCY RATIO 1:1 1:1 1:1 1:1 1:2 1:2 1:2 1:2 PFC UVLO TURN-ON (V) 16 10.2 16 10.2 16 10.2 16 10.2 PFC UVLO HYSTERESIS (V) 6.3 0.5 6.3 0.5 6.3 0.5 6.3 0.5 PWM UVLO2 TURN-OFF (V) 5.30 5.30 3.55 3.55 5.30 5.30 3.55 3.55 PWM UVLO2 HYSTERESIS (V) 1.45 1.45 3.2 3.2 1.45 1.45 3.2 3.2 PACKAGED DEVICES PDIP-20 (N) UCC28510N UCC28511N UCC28512N UCC28513N UCC28514N UCC28515N UCC28516N UCC28517N SOIC W-20 (DW) UCC28510DW UCC28511DW UCC28512DW UCC28513DW UCC28514DW UCC28515DW UCC28516DW
UCC28517DW The DW package is available taped and reeled. Add R suffix to device type (e.g. UCC28510DWR) to order quantities of 2000 devices per reel. All devices are rated from -40°C to +105°C.
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