UCC2540PWPR
NRNDHIGH EFFICIENCY SECONDARY SIDE SYNCHRONOUS BUCK PWM CONTROLLER
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UCC2540PWPR
NRNDHIGH EFFICIENCY SECONDARY SIDE SYNCHRONOUS BUCK PWM CONTROLLER
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Technical Specifications
Parameters and characteristics for this part
| Specification | UCC2540PWPR |
|---|---|
| Applications | Secondary-Side Controller |
| Mounting Type | Surface Mount |
| Operating Temperature [Max] | 105 ░C |
| Operating Temperature [Min] | -40 C |
| Package / Case | 0.173 ", 4.4 mm |
| Package / Case | 20-PowerTSSOP |
| Supplier Device Package | 20-HTSSOP |
| Voltage - Supply [Max] | 35 V |
| Voltage - Supply [Min] | 8.5 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | N/A | 0 | $ 4.09 | |
| Texas Instruments | LARGE T&R | 1 | $ 5.06 | |
| 100 | $ 4.13 | |||
| 250 | $ 3.24 | |||
| 1000 | $ 2.75 | |||
Description
General part information
UCC2540 Series
The UCC2540 is a secondary-side synchronous buck PWM controller for high current and low output voltage applications. It can be used either as the local secondary-side controller for isolated dc-dc converters using two-stage cascaded topologies or as a secondary-side post regulator (SSPR) for multiple output power supplies.
The UCC2540 runs with the synchronization signal from either the primary side or the high duty cycle quasi-dc output of bus converters or dc transformers. For higher efficiency, it also incorporates the Predictive Gate Drive™ technology that virtually eliminates body diode conduction losses in synchronous rectifiers.
The UCC2540 is available in the extended temperature range of –40°C to 105°C and is offered in thermally enhanced PowerPAD™ 20-pin HTSSOP (PWP) package. This space saving package with standard 20-pin TSSOP footprint has a drastically lower thermal resistance of 1.4°C/W øJCto accommodate the dual high-current drivers on board.
Documents
Technical documentation and resources
