R2A20034BSP - Brand New IC Chips
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Description
R2A20034BSP is a boost converter control IC with PFC (Power Factor Correction). It employs continuous conduction mode interleaving PFC, which results in higher efficiency and lower switching noise, even for high power use. The control of the continuous conduction mode is carried out by detecting the current in the power MOSFET. The R2A20034BSP supports two types of current detection methods: current detection by current transformers (R2A20104SP/FP) and current detection by shunt resistors (R2A20114SP/FP). This makes it applicable for a variety of applications. Interleaving control of the boost converters, which produces 180 degrees phase shift between the output signals (GD1,2) driving the boost converters, enables the system to achieve high conversion efficiency and low switching noises. It also reduces ripple currents in input and output current, allowing the use of smaller components such as boost inductors, input filters, and output capacitors. The R2A20034BSP integrates various kinds of protection circuits, including a detection circuit of breaking of wire in the feedback loop, two modes of overvoltage protection circuits, overcurrent protection circuit, and error output circuit. These protection circuits improve the reliability of the power supply system and reduce the number of component parts required for the system.
Specifications and features
Maximum Ratings
- Supply voltage Vcc: 24 V
- Junction temperature Tj: from –40 to +150 degrees centigrade
Electrical characteristics
- VFB feedback voltage VREF: 2.5 V ± 1.5%
- UVLO (Undervoltage Lockout) operation start voltage VH: 10.4 V ± 0.7 V
- UVLO operation shutdown voltage VL: 8.9 V ± 0.5 V
- UVLO hysteresis voltage Hysuvl : 1.5 V ± 0.5 V
Functions
- Boost converter control with continuous conduction mode
- Interleaving control
- Frequency modulation (2)
- Brownout
- Phase drop (1)
- External clock synchronization input
- External clock synchronization output (1)
- Two modes of overvoltage protections
Mode 1: Dynamic OVP preventing overvoltage after sudden variation of load.
Mode 2: Static OVP preventing overvoltage in the period of normal operation.
- Feedback loop wire breaking/open detector
- Dual overvoltage protection circuits (1): FB and OVP2 terminals
- Current balance control
- Phase 1 and Phase 2 independent overcurrent protection
- Package lineup
Pb-free LQFP-40 (R2A20104FP, R2A20114FP)
Pb-free SOP-20 (R2A20104SP, R2A20114SP)Application Scenarios
The R2A20034BSP can be used in various applications that require boost converter control with continuous conduction mode, such as power supplies, inverters, and electric vehicles. Its ability to achieve high conversion efficiency and reduce ripple currents makes it suitable for applications where space and size constraints are important factors.
Comparison
Advantages- Higher efficiency and lower switching noise
- Applicable for a variety of applications
- Reduces ripple currents in input and output current
- Integrates various protection circuits for improved reliability
- Reduces the number of component parts required for the systemDisadvantages- Specific to boost converter control with continuous conduction mode
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Similar parts: 430483 , Click to view
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Datasheet
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Shopping guide
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Popular parts of the same kind
- Datasheet: Download R2A20034BSP
- Chipdatas Part: CD94-R2A20034BSP
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
- Free Shipping: Yes
- Prority Shipping: Yes, 3-5 days
- Last Updated: 2024/06/24 20:58 +0800
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- Full Refund if you don't receive your order
- Full or Partial Refund , If the item is not as described
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