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LM21215A

Texas Instruments
Part Number LM21215A
Manufacturer Texas Instruments
Description Voltage-Mode Synchronous Buck Regulator
Published Dec 18, 2020
Detailed Description Product Folder Order Now Technical Documents Tools & Software Support & Community LM21215A SNOSB87D – MARCH 2011 – ...
Datasheet PDF File LM21215A PDF File

LM21215A
LM21215A


Overview
Product Folder Order Now Technical Documents Tools & Software Support & Community LM21215A SNOSB87D – MARCH 2011 – REVISED MAY 2019 LM21215A 2.
95-V to 5.
5-V,15-A, Voltage-Mode Synchronous Buck Converter With Frequency Synchronization 1 Features •1 High-Efficiency Synchronous DC/DC Converter – Input Voltage Range of 2.
95 V to 5.
5 V – Adjustable Output Voltage From 0.
6 V to VIN – Output Current as High as 15 A • Frequency Synchronization 300 kHz to 1.
5 MHz • Integrated 7-mΩ PMOS Buck Switch Supports 100% Duty Cycle for Low Dropout Voltage • Integrated 4.
3-mΩ NMOS Synchronous Rectifier Eliminates Schottky Diode • Accurate ±1% Internal Voltage Reference • Automatic Diode Emulation Mode for Improved Efficiency at Light Loads • Monotonic Pre-Biased Startup • Internal 0.
5-ms or Externally Adjustable Soft Start • Output Voltage Tracking Capability • Ultra-Fast Line and Load Transient Response – Voltage-Mode PWM Control – Wide-Bandwidth Voltage Loop Error Amplifier • Precision Enable with Hysteresis • Integrated OVP, UVP, OCP, and UVLO • Open-Drain Power Good Indicator • Thermal Shutdown Protection With Hysteresis • Thermally-Enhanced HTSSOP-20 Package • Create a custom design using the LM21215A with the WEBENCH® Power Designer 2 Applications • Telecommunications Infrastructure • DSP and FPGA Core Voltage Supplies • High Efficiency POL Conversion • Embedded Computing, Servers and Storage Efficiency at 2.
5 V, 500 kHz 100 98 EFFICIENCY (%) 96 94 92 90 0 VIN = 3.
3V VIN = 4.
0V VIN = 5.
0V VIN = 5.
5V 3 6 9 12 15 OUTPUT CURRENT (A) 3 Description The LM21215A is a synchronous buck DC-DC converter that delivers up to 15 A of output current at output voltages as low as 0.
6 V.
Operating over an input voltage range of 2.
95 V to 5.
5 V with ultra-high efficiency, the LM21215A suits a wide variety of low voltage systems.
The voltage-mode control loop with high gain-bandwidth error amplifier provides high noise immunity, narrow duty cycle capability and is easily compens...


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