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Overview
| Topology | Other Topology |
| Switching frequency | 750 kHz |
| IC revision | 1.0 |
Description
The LT®8714 is a synchronous PWM DC/DC controllerdesigned for a four quadrant output converter. The outputvoltage cleanly transitions through zero volts with sourcingand sinking output current capability.The LT8714 is ideal for regulating to positive, negative,or zero volts when configured for the novel four quadranttopology. Applications include four quadrant power supplies,high power bidirectional current sources, activeloads, and high power, low frequency signal amplification.In addition, the LT8714 incorporates a power good featureto let the user know if VOUT is above or below its targetregulation voltage.The LT8714’s switching frequency range can be programmedbetween 100kHz and 750kHz via a resistor from the RT pinto GND. A SYNC pin is also provided if the user would liketo synchronize the part to an external clock. Additionalfeatures such as current limiting and soft-start are included.The LT8714 is available in a 20‑lead TSSOP package.
Features
Bipolar Output Cleanly Transitions Through 0VOutput Can Source or Sink Current for Any Output VoltageCTRL Pin Externally Sets Output VoltageWide Input Range: 4.5V to 80VPower Good Indication Pin (PG)Switching Frequency Up to 750kHzCan Be Synchronized to an External ClockHigh Gain EN Pin Accepts Slowly Varying Input Signals20-Lead TSSOP Exposed Pad Package
Typical applications
- High Power, Low Frequency Signal Amplification
- Test and Measurement
- Electronic Window Tinting
- Bidirectional Current Sources
- Four Quadrant Power Supplies
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L1(µH) | L2(µH) | n | IR(A) | IR 2(A) | ISAT(A) | ISAT1(A) | ISAT2(A) | RDC1 typ(mΩ) | RDC2 typ(mΩ) | RDC1 max(mΩ) | RDC2 max(mΩ) | RDC 1(mΩ) | RDC 2(mΩ) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-DCT Toroidal Double Power Choke, 10 µH, 10 µH | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-DCT Toroidal Double Power Choke | Inductance 110 µH | Inductance 210 µH | – | Rated Current5.3 A | Rated Current 25.3 A | Saturation Current8 A | – | – | DC Resistance 118.4 mΩ | DC Resistance 218.4 mΩ | DC Resistance 122 mΩ | DC Resistance 222 mΩ | – | – | ||||
| WE-DCT Toroidal Double Power Choke, 22 µH, 22 µH | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-DCT Toroidal Double Power Choke | Inductance 122 µH | Inductance 222 µH | – | Rated Current3.5 A | Rated Current 23.5 A | Saturation Current2.7 A | – | – | DC Resistance 134 mΩ | DC Resistance 234 mΩ | DC Resistance 145 mΩ | DC Resistance 245 mΩ | – | – | ||||
| WE-DCT Toroidal Double Power Choke, 47 µH, 47 µH | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-DCT Toroidal Double Power Choke | Inductance 147 µH | Inductance 247 µH | – | Rated Current1.6 A | Rated Current 21.6 A | Saturation Current2 A | – | – | DC Resistance 1130 mΩ | DC Resistance 2130 mΩ | DC Resistance 1160 mΩ | DC Resistance 2160 mΩ | – | – | ||||
 | WE-CFWI Coupled Flatwire Inductor, 2.9 µH, 2.9 µH | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CFWI Coupled Flatwire Inductor | Inductance 12.9 µH | Inductance 22.9 µH | Turns Ratio1:1 | Rated Current17 A | Rated Current 217 A | – | Saturation Current 129 A | Saturation Current 229 A | – | – | – | – | DC Resistance 15.6 mΩ | DC Resistance 25.6 mΩ | ||||
| WE-CFWI Coupled Flatwire Inductor, 6.8 µH, 6.8 µH | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CFWI Coupled Flatwire Inductor | Inductance 16.8 µH | Inductance 26.8 µH | Turns Ratio1:1 | Rated Current14 A | Rated Current 214 A | – | Saturation Current 116 A | Saturation Current 216 A | – | – | – | – | DC Resistance 111.3 mΩ | DC Resistance 211.3 mΩ | ||||
| WE-CFWI Coupled Flatwire Inductor, 8.2 µH, 8.2 µH | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CFWI Coupled Flatwire Inductor | Inductance 18.2 µH | Inductance 28.2 µH | Turns Ratio1:1 | Rated Current13.5 A | Rated Current 213.5 A | – | Saturation Current 114 A | Saturation Current 214 A | – | – | – | – | DC Resistance 113 mΩ | DC Resistance 213 mΩ | ||||
| WE-CFWI Coupled Flatwire Inductor, 10 µH, 10 µH | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CFWI Coupled Flatwire Inductor | Inductance 110 µH | Inductance 210 µH | Turns Ratio1:1 | Rated Current13 A | Rated Current 213 A | – | Saturation Current 113.5 A | Saturation Current 213.5 A | – | – | – | – | DC Resistance 113.9 mΩ | DC Resistance 213.9 mΩ |