TLVM23615RDNR

Part: TLVM23615 / TLVM23625 — Texas Instruments

Type: Synchronous Buck Converter Power Module

Description: 3–36 V input, 1–6 V adjustable output, 1.5 A (TLVM23615) or 2.5 A (TLVM23625) synchronous buck power module with integrated MOSFETs, inductor and boot capacitor in a 3.5 mm × 4.5 mm × 2 mm HotRod™ QFN package, with 1.5 μA standby IQ at 13.5 V VIN.

Operating Conditions:

• Supply voltage: 3–36 V (VIN after start-up)
• Operating temperature: -40 to 125 °C junction (TJ); -40 to 105 °C ambient
• Output voltage: 1–6 V; switching frequency set by RT: 200 kHz–2.2 MHz

Absolute Maximum Ratings:

• Max junction temperature: 125 °C
• Storage temperature: -55 to 150 °C

Key Specs:

• VIN rising threshold before start-up: 3.2 / 3.35 / 3.5 V (min/typ/max); once operating: 2.45 / 2.7 / 3 V
• Non-switching input quiescent current: 1.2 μA typ (TA = 25 °C, VEN = 3.3 V, VFB = 1.5 V)
• Shutdown quiescent current: 0.3 μA typ (VEN = 0 V, TA = 25 °C)
• Feedback voltage: 1.0 V typ; accuracy ±1% (VOUT = 1 V, IOUT = 0 A, FSW = 200 kHz)
• High-side current limit: 4.2 / 4.9 / 5.5 A (TLVM23625); 2.58 / 3 / 3.42 A (TLVM23615)
• Low-side current limit: 2.38 / 2.9 / 3.42 A (TLVM23625); 1.44 / 1.75 / 2.06 A (TLVM23615)
• Soft-start time: 2 / 3.5 / 4.6 ms (VIN ≥ 4.2 V)
• Power-good thresholds: 108% rising (OV), 91% falling (UV) of VOUT typ
• Minimum on-time: 65 ns typ, 75 ns max (FPWM, VOUT = 1 V, IOUT = 1 A)
• RθJA: 54.1 °C/W (JESD 51-7); 22 °C/W (TLM23625EVM)

Features:

• Integrated MOSFETs, inductor, boot capacitor and controller
• Input transient protection up to 40 V
• Frequency adjustable from 200 kHz to 2.2 MHz using the RT pin
• Greater than 88% efficiency at 12 V VIN, 5 V VOUT, 1 MHz, 2.5 A
• Auto mode with PFM at light load
• Flip-chip on lead (FCOL) package for low EMI; CISPR 11 Class B compliant-capable
• Peak current mode control with internal compensation
• Precision enable and open-drain power-good output
• Pin compatible with TPSM365R6
• Functional Safety-Capable

Applications:

• Factory automation
• Test and measurement
• Grid infrastructure

Package:

• RDN QFN-FCMOD, 11 pins (3.50 mm × 4.50 mm)

• Functional Safety-Capable
• -Documentation available to aid functional safety system design
• Versatile synchronous buck DC/DC module:
• -Integrated MOSFETs, inductor, CBOOT capacitor and controller
• -Wide input voltage range of 3V to 36V
• -Input transient protection up to 40 V
• -Junction temperature range -40°C to +125°C
• -Overmolded package of 4.5mm × 3.5mm × 2mm
• -Frequency adjustable from 200kHz to 2.2MHz using the RT pin
• Ultra-high efficiency across the full load range:
• -Greater than 88% efficiency at 12V VIN, 5V VOUT, 1MHz, IOUT = 2.5A
• -Greater than 87% efficiency at 24VIN, 5VOUT, 1MHz, IOUT = 2.5A
• -As low as 1.5μA standby IQ at 13.5VIN
• Optimized for ultra-low EMI requirements:
• -Flip-chip on lead package - FCOL
• -Inductor and boot capacitor integration
• -CISPR 11, Class B compliant-capable
• Output voltage and current options:
• -Adjustable output voltage from 1V to 6V
• Designed for scalable power supplies:
• -Pin compatible with:
• TPSM365R6 (65V, 600mA)
• Create a custom design using the TLVM236x5 with the WEBENCH ® Power Designer

• Factory automation
• Test and measurement
• Grid infrastructure

• A. Pin 11 factory-set for fixed switching frequency MODE/SYNC variants only.
• B. See Device Comparison Table for more details. Pin 11 trimmed and factory-set for externally adjustable switching frequency RT variants only.

Limits apply over T J = -40°C to 125°C, VIN = 24 V, VOUT = 3.3 V, FSW = 1000 kHz (unless otherwise noted). Minimum and maximum limits are specified through production test or by design. Typical values represent the most likely parametric norm and are provided for reference only.

Limits apply over T J = -40°C to 125°C (unless otherwise noted). (1)

• (2) A voltage of 2 V below PGND and 2 V above VIN can appear on this pin for ≤ 200 ns with a duty cycle of ≤ 0.01%.

Limits apply over T J = -40°C to 125°C (unless otherwise noted).

The TLVM236x5 only requires a few external components to convert from a wide range of supply voltages to a fixed output voltage. To expedite and streamline the process of designing of a TLVM236x5, WEBENCH online software is available to generate complete designs, leveraging iterative design procedures and access to comprehensive component databases. The following section describes the design procedure to configure the TLVM236x5 power module.

As mentioned previously, the TLVM236x5 also integrates several optional features to meet system design requirements, including precision enable, UVLO, and PGOOD indicator. The application circuit detailed below shows TLVM236x5 configuration options suitable for several application use cases. Refer to the TLVM23625EVM User's Guide for more detail.