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TI UCD7242RSJR
Buck Switching Regulator IC Positive 2 Output 10A 32-PowerVFQFN
Brands: TI
Mfr.Part #: UCD7242RSJR
Datasheet: UCD7242RSJR Datasheet (PDF)
Package/Case: QFN32
Product Type: Switching Converters, Regulators & Controllers
RoHS Status:
Stock Condition: 36 pcs, New Original
Warranty: 1 Year Ovaga Warranty - Find Out More
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Add To BomUCD7242RSJR General Description
The UCD7242 is a complete power system ready to drive two independent buck power supplies. High side MOSFETs, low side MOSFETs, drivers, current sensing circuitry and necessary protection functions are all integrated into one monolithic solution to facilitate minimum size and maximum efficiency. Driver circuits provide high charge and discharge current for the high-side NMOS switch and the low-side NMOS synchronous rectifier in a synchronous buck circuit. The MOSFET gates are driven to +6.25 V by an internally regulated VGG supply. The internal VGG regulator can be disabled to permit the user to supply an independent gate drive voltage. This flexibility allows a wide power conversion input voltage range of 2.2V to 18V. Internal under voltage lockout (UVLO) logic ensures VGG is good before allowing chip operation.
The synchronous rectifier enable (SRE) pin controls whether or not the low-side MOSFET is turned on when the PWM signal is low. When SRE is high the part operates in continuous conduction mode for all loads. In this mode the drive logic block uses the PWM signal to control both the high-side and low-side gate drive signals. Dead time is also optimized to prevent cross conduction. When SRE is low, the part operates in discontinuous conduction mode at light loads. In this mode the low-side MOSFET is always held off.
On-board comparators monitor the current through the high side switch to safeguard the power stage from sudden high current loads. Blanking delay is set for the high side comparator to avoid false reports coincident with switching edge noise. In the event of an over-current fault, the high-side FET is turned off and the Fault Flag (FLT) is asserted to alert the controller.
MOSFET current is measured and monitored by a precision integrated current sense element. This method provides an accuracy of ±5% over most of the load range. The amplified signal is available for use by the controller on the IMON pin.
An on-chip temperature sense converts the die temperature to a voltage at the TMON pin for the controller’s use. If the die temperature exceeds 170°C, the temperature sensor initiates a thermal shutdown that halts output switching and sets the FLT flag. Normal operation resumes when the die temperature falls below the thermal hysteresis band.
Features
- Fully Integrated Power Switches With Drivers
for Dual Synchronous Buck Converters - Full Compatibility With TI Fusion Digital Power Supply
Controllers, Such as the UCD92xx Family - Wide Input Voltage Range: 4.75 V to 18 V
Operational Down to 2.2 V Input With an External Bias Supply - Up to 10A Output Current per Channel
- Operational to 2 MHz Switching Frequency
- High Side Current Limit With Current Limit Flag
- Onboard Regulated 6 V Driver Supply From VIN
- Thermal Protection
- Temperature Sense Output – Voltage Proportional to Chip Temperature
- UVLO and OVLO Circuits Ensure Proper Drive Voltage
- Rated From –40°C to 125°C Junction Temperature
- RoHS Compliant
- Accurate On-Die Current Sensing (±5%)
- APPLICATIONS
- Digitally-Controlled Synchronous-Buck Power Stages
- High Current Dual-Phase VRM/EVRD Regulators for Desktop, Server, Telecom and
Notebook Processors
Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Supply voltage (min) (V) | 2.2 | Supply voltage (max) (V) | 18 |
| Number of outputs | 2 | Peak output current (A) | 10 |
| Propagation delay time (µs) | 0.032 | Driver configuration | Dual |
| Operating temperature range (°C) | -40 to 125 |
Shipping
| Shipping Type | Ship Fee | Lead Time | |
|---|---|---|---|
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DHL | $20.00-$40.00 (0.50 KG) | 2-5 days |
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Fedex | $20.00-$40.00 (0.50 KG) | 2-5 days |
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UPS | $20.00-$40.00 (0.50 KG) | 2-5 days |
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TNT | $20.00-$40.00 (0.50 KG) | 2-5 days |
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EMS | $20.00-$40.00 (0.50 KG) | 2-5 days |
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REGISTERED AIR MAIL | $20.00-$40.00 (0.50 KG) | 2-5 days |
Processing Time：Shipping fee depend on different zone and country.
Payment
| Terms of payment | Hand Fee | |
|---|---|---|
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Wire Transfer | charge US$30.00 banking fee. |
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Paypal | charge 4.0% service fee. |
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Credit Card | charge 3.5% service fee. |
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Western Union | charge US.00 banking fee. |
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Money Gram | charge US$0.00 banking fee. |
Guarantees
1.The electronic components you purchase include 365 Days Warranty, We guarantee product quality.
2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.
Packing
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All the products will packing in anti-staticbag. Ship with ESD antistatic protection.
Outside ESD packing’s lable will use ourcompany’s information: Part Mumber, Brand and Quantity.
We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.
After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.
We provide high quality products, thoughtful service and after sale guarantee
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We have rich products, can meet your various needs.
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Minimum order quantity starts from 1pcs.
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Lowest international shipping fee starts from $0.00
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365 days quality guarantee for all products
