Payment Method
UCC28951PWT
Green phase-shifted full-bridge controller with SR control for Wide input voltage Range
-
Manufacturer:
-
Mfr.Part #:
UCC28951PWT
-
Datasheet:
-
Topology:
Phase-shifted full bridge
-
Control mode:
Current, Peak current mode, Voltage
-
Duty cycle (max) (%):
97
-
Switching frequency (max) (kHz):
1000
-
EDA/CAD Models:
Availability: 3803 PCS
Please fill in the short form below and we will provide you the quotation immediately.
UCC28951PWT General Description
The UCC28951 controller is an enhanced version of the UCC28950. It is a fully compatible drop-in replacement for the UCC28950. The UCC28951 uses advanced control of the full-bridge in addition to active control of the synchronous rectifier (SR) output stage.
Programmable delays ensure ZVS operation over a wide range of operating conditions, while the load current naturally tunes the switching delays of the secondary-side synchronous rectifiers(SR). This functionality maximizes overall system efficiency.
The 24-pin, TSSOP package complies with RoHS requirements.
Key Features
- Enhanced zero-voltage switching (ZVS) range
- Direct synchronous rectifier (SR) control
- Light-load efficiency management including:
- Burst mode operation
- Discontinuous conduction mode (DCM), dynamic SR on/off control with programmable threshold
- Programmable adaptive delay
- Average- or peak-current mode control with programmable slope compensation and voltage-mode control
- Closed-loop soft-start and enable function
- Programmable switching frequency up to 1 MHz with bidirectional synchronization
- (±3%) cycle-by-cycle current limit protection with hiccup mode support
- 150-µA start-up current
- VDD undervoltage lockout
- Wide temperature range: –40°C to +125°C
Specifications
Topology | Phase-shifted full bridge | Control mode | Current, Peak current mode, Voltage |
Duty cycle (max) (%) | 97 | Switching frequency (max) (kHz) | 1000 |
Features | Adjustable switching frequency, Current limiting, Enable/Shutdown, Error amplifier, Green mode, Light-load efficiency, Programmable slope compensation, Soft start, Soft switching, Synchronization pin, Thermal shutdown | UVLO thresholds on/off (V) | 7.3/6.7 |
Operating temperature range (°C) | -40 to 125 | Rating | Catalog |
Gate drive (typ) (A) | 0.2 | Vin (max) (V) | 17 |
Service Policies and Others
After-Sales & Settlement Related
For alternative payment channels, please reach out to us at:
[email protected]Shipping Method
AVAQ determines and packages all devices based on electrostatic discharge (ESD) and moisture sensitivity level (MSL) protection requirements.
365-Day Product
Quality Guarantee
We promise to provide 365 days quality assurance service for all our products.
Availability: 3803 PCS
+BOMQty. | Unit Price | Ext. Price |
---|---|---|
1+ | - | - |
The prices below are for reference only.
All bill of materials (BOM) can be sent via email to [email protected], or fill below form to Quote for UCC28951PWT, guaranteed quotes back within 12hr.
Top Sellers
-
LMZ21701SILT
Texas Instruments
1000+ $3.206
-
TPS82130SILR
Texas Instruments
1000+ $0.579
-
BQ21040DBVR
Texas Instruments
6000+ $0.170
-
TPS82140SILR
Texas Instruments
This product is a high-frequency DC/DC converter, specifically designed for synchronous buck applications
-
OPA549T
Texas Instruments
Product code OPA549T designed for general-purpose applications