Energy Saving Off-line AC/DC Converter
With Integrated 800V MOSFET
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- Parameters
- Features
- Description
Part Number | SQ38343FHP |
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Description | Energy Saving Off-line AC/DC Converter With Integrated 800V MOSFET |
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Package | SSOP10 |
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Protection Mode | VCC OVP, OLP, OTP |
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Standards & Certification | |
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BV (V) | 800 |
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Po_max (W) | 8 |
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Application | Isolation |
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No Load Loss | <100mW |
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- 800V Integrated Power MOSFET
- Pseudo Fixed Frequency
- Nominal Switching Frequency: 120kHz
- Frequency Fold Back and Burst Mode Control
- FSW Modulation to Reduce EMI Noise
- Supports Flyback and Buck Topologies
- PSR/SSR Optional for Flyback Topology
- HV Start Up from DRAIN
- Peak Current Limit: 590mA
- Wide VCC Operating Range: 4.5V~25.5V
- VCC OVP, OLP, OTP, Input OVP (through ENB pin)
- Internal Soft Start Process Compact Package: SSOP10
The SQ38343 is a peak current mode flyback/buck converter that integrates a controller with an 800V MOSFET. It features pseudo fixed frequency control which can avoid sub-harmonic oscillation at CCM and duty>50%. Frequency fold back control is used to achieve high efficiency at medium and light load conditions. The device automatically enters burst mode during light or no-load conditions. When used in flyback topology, the device can be configured to use either PSR (Primary Side Regulation) or SSR (Secondary Side Regulation) mode.
The SQ38343 offers a wide VCC operating range from 4.5V to 25.5V, which can support buck converter configuration for output voltages as low as 5V. Quick start-up is enabled by using an integrated HV (High Voltage) start-up circuit.
The SQ38343 provides comprehensive protections including VCC OVP (Overvoltage Protection), OLP (Overload Protection), OTP (Over temperature Protection) and input/output OVP using the ENB pin for reliable operation.
The SQ38343 is available with compact SSOP10 package.
Evaluation Board
Photo of evaluation board
Photo of evaluation board
The EVB_SQ38343FHP is intended for evaluating Switcher for Auxiliary Power Supply