3-V to 36-V, 6-A, Low-EMI synchronous step-down converter
Product details
Parameters
Package | Pins | Size
Features
- Optimized for ultra low EMI requirements
- Hotrod™ package minimizes switch node ringing
- Parallel input path minimizes parasitic inductance
- Adjustable SW node rise time
- Designed for reliable and rugged applications
- ±1% total output regulation accuracy
- VOUT adjustable from 1 V to 95% of VIN
- 0.4-V dropout with 4-A load (typical)
- Protection features: thermal shutdown, input undervoltage lockout, cycle-by-cycle current limit, hiccup short-circuit protection
- High efficiency power conversion at all loads
- 7-µA no load current at 13.5 VIN, 3.3 VOUT
- 91% PFM efficiency at 1-mA, 13.5 VIN, 5 VOUT
- Low MOSFET ON resistance
- RDS_ON_HS = 41 mΩ (typical)
- RDS_ON_LS = 21 mΩ (typical)
- External bias option for improved efficiency
- Suitable for scalable power supplies
- Pin compatible with:
- LM61440-Q1 (36 V, 4 A, adjustable fSW)
- LM61440 (36 V, 4 A, adjustable fSW)
- Pin compatible with:
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Description
The LM61460 is a high-performance, DC-DC synchronous step-down converter. With integrated high-side and low-side MOSFETs, up to 6 A of output current is delivered over a wide input range of 3.0 V to 36 V; tolerant of 42 V, easing input surge protection design. The LM61460 implements soft recovery from dropout eliminating overshoot on the output.
The LM61460 is specifically designed for minimal EMI. The device incorporates adjustable SW node rise time, low-EMI VQFN-HR package featuring low switch node ringing, and optimized pinout for ease of use. The switching frequency can be set or synchronized between 200 kHz and 2.2 MHz to avoid noise sensitive frequency bands. In addition the frequency can be selected for improved efficiency at low operating frequency or smaller solution size at high operating frequency.
Auto-mode enables frequency foldback when operating at light loads, allowing an unloaded current consumption of only 7 µA (typical) and high light load efficiency. Seamless transition between PWM and PFM modes, along with very low MOSFET ON resistances and an external bias input, ensures exceptional efficiency across the entire load range.
Electrical characteristics are specified over a junction temperature range of –40°C to +150°C. Find additional resources in the Related Documentation.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | LM61460 3-V to 36-V, 6-A, Low EMI Synchronous Step-Down Converter datasheet (Rev. A) | Feb. 20, 2020 |
Functional safety information | LM61x0 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA | Oct. 08, 2020 | |
Selection guide | Buck Converter Quick Reference Guide (Rev. A) | Mar. 31, 2020 | |
Technical articles | Keeping the brain cool: how to use high-power DC/DCs in single-board computer designs | Feb. 28, 2020 | |
Technical articles | Minimize the impact of the MLCC shortage on your power application | Mar. 29, 2019 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
Features
- Spread spectrum operation
- Controlled recover from dropout
- Low operating quiescent current
- High efficiency
- Low minimum on-time
- Adjustable rise time
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
Reference designs
Design files
-
download PMP22416 BOM.pdf (127KB) -
download PMP22416 Assembly Drawing.pdf (257KB) -
download PMP22416 PCB.pdf (1044KB) -
download PMP22416 CAD Files.zip (1312KB) -
download PMP22416 Gerber.zip (810KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
VQFN-HR (RJR) | 14 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
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