Electronic Components Datasheet Search |
|
UCC1583 Datasheet(PDF) 1 Page - Texas Instruments |
|
UCC1583 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 10 page 11/98 FEATURES • Precision Secondary Side Post Regulation for Multiple Output Power Supplies • Useful for Both Single Ended and Center Tapped Secondary Circuits • Ideal Replacement for Complex Magnetic Amplifier Regulated Circuits • Leading Edge Modulation • Does Not Require Gate Drive Transformer • High Frequency (>500kHz) Operation • Applicable for Wide Range of Output Voltages • High Current Gate Driver (0.5A Sink/1.5A Source) • Average Current Limiting Loop DESCRIPTION The UCC3583 is a synchronizable secondary side post regulator for preci- sion regulation of the auxiliary outputs of multiple output power supplies. It contains a leading edge pulse width modulator, which generates the gate drive signal for a FET power switch connected in series with the rectifying diode. The turn-on of the power switch is delayed from the leading edge of the secondary power pulse to regulate the output voltage. The UCC3583 contains a ramp generator slaved to the secondary power pulse, a voltage error amplifier, a current error amplifier, a PWM comparator and associ- ated logic, a gate driver, a precision reference, and protection circuitry. The ramp discharge and termination of the gate drive signal are triggered by the synchronization pulse, typically derived from the falling edge of the transformer secondary voltage. The ramp starts charging again once its low threshold is reached. The gate drive signal is turned on when the ramp voltage exceeds the control voltage. This leading edge modulation tech- nique prevents instability when the UCC3583 is used in peak current mode primary controlled systems. The controller operates from a floating power supply referenced to the out- put voltage being controlled. It features an undervoltage lockout (UVLO) circuit, a soft start circuit, and an averaging current limit amplifier. The cur- rent limit can be programmed to be proportional to the output voltage, thus achieving foldback operation to minimize the dissipation under short circuit conditions. (continued) UCC1583 UCC2583 UCC3583 Switch Mode Secondary Side Post Regulator TYPICAL APPLICATION AND BLOCK DIAGRAM UDG-96201-2 Note: Pin connections shown for 14-pin packages. |
Similar Part No. - UCC1583 |
|
Similar Description - UCC1583 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |