Texas Instruments introduces a pair of high-current, synchronous buck regulators with the industry’s highest efficiency at 97 percent. The LM21212-1 and LM21215 are well-suited for high-performance FPGAs, ASICs and microprocessors used in a variety of low-voltage applications including wireless, networking and optical communications infrastructure. Members of National’s PowerWise® energy-efficient product family, the LM21212-1 and LM21215 feature integrated high-side and low-side FETs, which simplify design and reduce solution size. The LM21212-1 features an output current up to 12A with synchronizable switching frequency and the LM21215 provides a resistor-programmable current limit, allowing up to 15 A of continuous output current, offering the industry’s best power density. Both products provide peak efficiency greater than 97 percent from a 5 V input to 3.3 V output, and greater than 92 percent efficiency when regulating a 1.2 V output from a 5 V input.
Features - LM21212-1
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Features - LM21215 |
- Integrated 7.0 mΩ high side and 4.3 mΩ low side
FET switches
- 300 kHz to 1.5 MHz frequency SYNC pin
- Adjustable output voltage from 0.6 V to VIN
(100% duty cycle capable), ±1% reference
- Input voltage range 2.95 V to 5.5 V
- Startup into pre-biased loads
- Output voltage tracking capability
- Wide bandwidth voltage loop error amplifier
- Adjustable soft-start with external capacitor
- Precision enable pin with hysteresis
- Integrated OVP, OCP, OTP, UVLO and Power-Good
- Thermally enhanced eTSSOP-20 package
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- Integrated 7.0 mΩ high side and 4.3 mΩ low side FET switches
- Adjustable current limit
- Adjustable output voltage from 0.6 V to VIN
(100% duty cycle capable), ±1% reference
- Input voltage range 2.95 V to 5.5 V
- 500 kHz fixed switching frequency
- Startup into pre-biased loads
- Output voltage tracking capability
- Wide bandwidth voltage loop error amplifier
- Adjustable soft-start with external capacitor
- Precision enable pin with hysteresis
- Integrated OVP, OTP, UVLO and Power-Good
- Thermally enhanced eTSSOP-20 package
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| Applications |
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- Broadband, networking and wireless communications
- High-performance FPGAs, ASICs and microprocessors
- Simple to design, high efficiency point of load regulation from a 5 V or 3.3 V bus
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Texas Instruments introduces a pair of high-current, synchronous buck regulators with the industry’s highest efficiency at 97 percent. The LM21212-1 and LM21215 are well-suited for high-performance FPGAs, ASICs and microprocessors used in a variety of low-voltage applications including wireless, networking and optical communications infrastructure. Members of National’s PowerWise® energy-efficient product family, the LM21212-1 and LM21215 feature integrated high-side and low-side FETs, which simplify design and reduce solution size. The LM21212-1 features an output current up to 12A with synchronizable switching frequency and the LM21215 provides a resistor-programmable current limit, allowing up to 15 A of continuous output current, offering the industry’s best power density. Both products provide peak efficiency greater than 97 percent from a 5 V input to 3.3 V output, and greater than 92 percent efficiency when regulating a 1.2 V output from a 5 V input.
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