MAX25208

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Versatile Automotive 60V/70V 2.2MHz Buck Controller with 7µA I_Q and Optional Bypass Mode

業界最低60V/70V I_Qの車載同期整流ステップダウンコントローラ、わずか7µAの自己消費電流

印刷可能なデータシート

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製品の詳細

General Description

The MAX25206/MAX25207/MAX25208 are automotive 2.2MHz synchronous step-down controllers with 7μA I_Q. These devices operate with an input voltage supply from 3.5V to 60V (MAX25206/MAX25207) and 70V (MAX25208). They can operate in drop-out condition by running at 99% (typ) duty cycle. These controllers are intended for applications with mid- to high-power requirements that operate at a wide input voltage range such as during automotive cold-crank or engine stop-start conditions. The MAX25207 has an optional bypass mode, which allows 100% high-side switch on until step-down function is needed during automotive transients.

The MAX25206/MAX25207/MAX25208 step-down controllers operate at a frequency up to 2.2MHz to allow small external components, reduced output ripple, and to eliminate AM band interference. The switching frequency is resistor adjustable (220 kHz to 2200 kHz). SYNC input programmability enables three frequency modes for optimized performance: forced fixed-frequency operation (FPWM), skip mode with ultra-low quiescent current, and synchronization to an external clock. The IC also provides SYNCOUT output to enable two controllers to operate in parallel. The MAX25206/MAX25207/MAX25208 have a pin-selectable spread-spectrum option for frequency modulation to minimize EMI.

The MAX25206/MAX25207/MAX25208 feature a PGOOD monitor and undervoltage lockout. Protection features include cycle-by-cycle current limit and thermal shutdown. These controllers are specified for operation over the -40°C to +125°C automotive temperature range.

Simplified Block Diagram

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Benefits and Features

Meets Stringent Automotive OEM Module Power Consumption and Performance Specifications
- 7µA Quiescent Current in Skip Mode
- Fixed 5.0V/3.3V or Adjustable 0.7V to 20V Output
- ±1.5% Output-Voltage Accuracy for 5V Fixed Setting
Enables Crank-Ready Designs
- Wide Input Supply Range from 3.5V to 60V/70V
EMI Reduction Features Reduce Interference with Sensitive Radio Bands without Sacrificing Wide Input Voltage Range
- 50ns (typ) Minimum On-Time Allows Skip-Free Operation for 3.3V Output from Car Battery at 2.2MHz
- Spread-Spectrum Option
- Frequency-Synchronization Input
- Resistor-Programmable Frequency Between 220kHz and 2.2MHz

Integration and Thermally Enhanced Packages Save Board Space and Cost
- 2.2MHz Step-Down Controller
- 180 Degrees Out-of-Phase SYNCOUT Output for Synchronization
- Current-Mode Controller with Forced-Continuous and Skip Modes
- Thermally Enhanced 20-Pin Side-Wettable (SW) 4mm x 4mm TQFN-EP Package

Protection Features Improve System Reliability
- Supply Undervoltage Lockout
- Output Overvoltage and Undervoltage Monitoring
- Overtemperature and Short-Circuit Protection
- -40ºC to +125ºC Grade 1 Automotive Temperature Range

Applications

Infotainment Systems
48V Systems
General Purpose Point of Load (POL)

19-100800; Rev 1; 12/20

パラメトリック仕様を見る： Step-Down Switching Regulators

主な特長

パラメトリック仕様を見る： Step-Down Switching Regulators

Parametric specs for Step-Down Switching Regulators

V_IN (V) (min)	3.5
V_IN (V) (max)	75
V_OUT1 (V) (min)	0.7
V_OUT1 (V) (max)	20
I_OUT1 (A) (max)	22
Switch Type	External
Preset V_OUT (V)	5
Output Adjust. Method	Preset or Adj
Synchronous Switching?	Yes
Power Good Signal	Yes
I_CC (mA) (typ)	.007
# DC-DC Outputs	1
Switching Frequency (kHz)	2200
Design Tools	EE-Sim
Package/Pins	TQFN-CU/20
Budgetary Price (See Notes)	2.49

パラメトリック仕様を見る： Step-Down Switching Regulators

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簡易ブロック図

Technical Docs

データシート

Versatile Automotive 60V/70V 2.2MHz Buck Controller with 7µA I_Q and Optional Bypass Mode

Jan 04, 2021

設計と開発

以下タイトルをクリックして詳細をご覧ください。

評価ボード

MAX25207EVKIT

データシート

説明

The MAX25207 evaluation kit (EV kit) provides a proven design to evaluate the MAX25207 automotive 2.2MHz synchronous step-down controllers with bypass mode. The default EV kit delivers 7A with input voltages up to 60V, but it can be configured to deliver up to 20A. The output voltage quality can be monitored by observing the PGOOD signal.

詳細を見る

特長

+3.5V to +60V Input Supply Range
Output Voltage: 14V in Buck Mode (Follows Input in Bypass Mode)
Output Current: 7A (Configurable to 20A)
Switching Frequency: 440kHz
Forced-PWM Mode of Operation
Spread-Spectrum Control
Enable Input
Voltage Monitoring PGOOD Output
Proven PCB Layout
Fully Assembled and Tested

評価ボード

MAX25206EVKIT

データシート

説明

The MAX25206 evaluation kit (EV kit) provides a proven design to evaluate the MAX25206/8 automotive 2.2MHz synchronous step-down controllers with 7µA I_Q. The EV kit PCB comes with a MAX25206 IC installed, as well as various test points and jumpers for evaluation. The EV kit output voltage is fixed and is easily configured with minimum component changes. The default EV kit is designed to deliver up to 7A with input voltages from +3.5V to +60V (MAX25206) and +70V (MAX25208), but can be configured to deliver up to 20A. Output voltage quality can be monitored by observing the PGOOD signal.

詳細を見る

特長

+3.5V to +60V (MAX25206) and +70V (MAX25208) Input Supply Range
Output Voltage: 5V or 3.3V Fixed or Adjustable between 0.7V to 20V
Delivers up to 20A Output Current
Frequency Synchronization Input
Frequency Synchronization Output
Spread-Spectrum Control
Enable Input
Voltage-Monitoring PGOOD Output
Proven PCB Layout
Fully Assembled and Tested

ツールおよびモデル

EE-Sim: 設計およびシミュレーションMAX25208

デザインを作成する

サポートとトレーニング

技術質問への回答についてはナレッジベースで検索ください。

絞り込まれた検索

マキシムでは、お客様の技術的質問にお答えするため、アプリケーションエンジニアの専任チームも配置しています。サポートセンターをご利用ください。

パラメーター

Parametric specs for Step-Down Switching Regulators

V_IN (V) (min)	3.5
V_IN (V) (max)	75
V_OUT1 (V) (min)	0.7
V_OUT1 (V) (max)	20
I_OUT1 (A) (max)	22
Switch Type	External
Preset V_OUT (V)	5
Output Adjust. Method	Preset or Adj
Synchronous Switching?	Yes
Power Good Signal	Yes
I_CC (mA) (typ)	.007
# DC-DC Outputs	1
Switching Frequency (kHz)	2200
Design Tools	generateDesignEESIMUrl('http://maxim.transim.com/pwm2/designreq/Index?partId=27030', '')
Package/Pins	TQFN-CU/20
Budgetary Price (See Notes)	2.49

See parametric specs for Step-Down Switching Regulators

主な特長

Meets Stringent OEM Module Power Consumption and Performance Specifications
- 7µA Quiescent Current in Skip Mode at V_OUT = 3.3V
- ±1.5% Output-Voltage Accuracy: 5.0V/3.3V Fixed, or Adjustable Between 1V and 10V
Enables Crank-Ready Designs
- Wide Input Supply Range from 3.5V to 42V
EMI Reduction Features Reduce Interference with Sensitive Radio Bands without Sacrificing Wide Input Voltage Range
- 50ns (typ) Minimum On-Time Guarantees Skip-Free Operation for 3.3V Output from Car Battery at 2.2MHz
- Spread-Spectrum Option
- Frequency-Synchronization Input
- Resistor-Programmable Frequency Between 220kHz and 2.2MHz
Integration and Thermally Enhanced Packages Save Board Space and Cost
- 2.2MHz Step-Down Controller
- 180° Out-of-Phase SYNCOUT Output for Synchronization
- Current-Mode Controller with Forced-Continuous and Skip Modes
- Thermally Enhanced 20-Pin Side-Wettable (SW) TQFN-EP Package
Protection Features Improve System Reliability
- Supply Undervoltage Lockout
- Overtemperature and Short-Circuit Protection
- Output Overvoltage and Undervoltage Monitoring
- -40°C to +125°C Grade 1 Automotive Temperature Range

アプリケーション/用途

24Vトラックシステム、インフォテインメントシステム、48Vシステム

説明

The MAX25206/MAX25207/MAX25208 are automotive 2.2MHz synchronous step-down controller IC with 7µA I_Q. This IC operates with an input-voltage supply from 3.5V to 60V (MAX25206/7) and 70V (MAX25208). They can operate in dropout condition by running at 99% (typ) duty cycle. These controllers are intended for applications with mid- to high-power requirements that operate at a wide input voltage range such as during automotive cold-crank or engine stop-start conditions. The MAX25207 has an optional bypass mode which allows 100% high-side switch on until step-down function is needed during automotive transients.

The MAX25206/MAX25207/MAX25208 step-down controllers operate at up to 2.2MHz frequency to allow small external components, reduced output ripple, and to guarantee no AM band interference. The switching frequency is resistor adjustable (220 kHz to 2200 kHz). SYNC input programmability enables three frequency modes for optimized performance: forced fixed-frequency operation, skip mode with ultra-low quiescent current, and synchronization to an external clock. The IC also provides SYNCOUT output to enable two controllers to operate in parallel. The MAX25206/MAX25207/MAX25208 have a pin selectable spread-spectrum option for frequency modulation to minimize EMI interference.

The MAX25206/MAX25207/MAX25208 feature a PGOOD monitor and undervoltage lockout. Protection features include cycle-by-cycle current limit and thermal shutdown. These controllers are specified for operation over the -40°C to +125°C automotive temperature range.

簡易ブロック図

MAX25206、MAX25207、MAX25208：標準アプリケーション回路

Technical Docs

データシート

Versatile Automotive 60V/70V 2.2MHz Buck Controller with 7µA I_Q and Optional Bypass Mode

Jan 04, 2021

サポートとトレーニング

技術質問への回答についてはナレッジベースで検索ください。

絞り込まれた検索

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INTERACTIVE Data Sheet

MAX25208

Versatile Automotive 60V/70V 2.2MHz Buck Controller with 7µA IQ and Optional Bypass Mode

製品の詳細

主な特長

アプリケーション/用途

簡易ブロック図

Technical Docs

設計と開発

EE-Sim: 設計およびシミュレーションMAX25208

EE-Sim: 設計およびシミュレーションMAX25208

サポートとトレーニング

パラメーター

主な特長

アプリケーション/用途

説明

簡易ブロック図

Technical Docs

サポートとトレーニング

MAX25208 関連ビデオ

Versatile Automotive 60V/70V 2.2MHz Buck Controller with 7µA I_Q and Optional Bypass Mode