UCC2897ARGPR Lithium Ion Battery Power Path Management IC Switching Active Clamp
battery charge management ic
,power management integrated circuit
UCC2897ARGPR Power Path Management IC Switching Controllers Adv Crnt-Mode Active Clamp PWM Controller
1 Features
- Low-Output Jitter
-
Soft-Stop Shutdown of MAIN and AUX
-
110-V Input Startup Function
-
Ideal for Active-Clamp, Reset-Forward, Flyback and Synchronous Rectifier Uses
-
Provides Complementary Auxiliary Driver with Programmable Dead Time (Turn-On Delay) between AUX and MAIN Switches
-
Peak Current-Mode Control with 0.5-V Cycle-by- Cycle Current Limiting
-
TrueDriveTM 2-A Sink, 2-A Source Outputs
-
Trimmed Internal-Bandgap Reference for Accurate Line UV and Line OV Threshold
-
Programmable Slope Compensation
-
High-Performance 1-MHz Synchronizable Oscillator with Internal Timing Capacitor
-
Precise Programmable Maximum Duty Cycle
-
PB-Free Lead Finish Package
2 Applications
-
High-Efficiency DC-to-DC Power Supplies
-
Server Power, 48-V Telecom, Datacom, and 42-V Automotive Applications
3 Description
The UCC2897A PWM controller simplifies implementation of the various active clamp or reset and synchronous rectifier switching power topologies.
The UCC2897A is a peak current-mode fixed- frequency high-performance pulse-width modulator. The controller includes the logic and the drive capability for the P-channel auxiliary switch along with a simple method of programming the critical delays for proper active-clamp operation.
Features include an internal programmable slope compensation circuit, precise DMAX limit, and a synchronizable oscillator with an internal-timing capacitor. An accurate line-monitoring function also programs the ON and OFF transitions of the converter with regard to the bulk input voltage, VIN.
The UCC2897A adds a second-level hiccup-mode current-sense threshold, bi-directional synchronization and input-overvoltage protection functionalities. The UCC2897A is offered in 20-pin TSSOP (PW) and 20-pin QFN (RGP) packages.
Device Information
|
PART NUMBER |
PACKAGE |
BODY SIZE (NOM) |
|
UCC2897A |
TSSOP (20) |
6.60 mm x 6.60 mm |
|
VQFN (20) |
4.15 mm x 4.15 mm |
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