Datasheet > MAX17598

MAX17598

更新时间： 2023-12-20 18:44:05

品牌	Logo	应用领域
亚德诺 - ADI		控制器
页数	文件大小	规格书
24页	1209K
描述
低IQ、宽输入范围、有源钳位电流模式PWM控制器

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MAX17598 数据手册

EVALUATION KIT AVAILABLE

MAX17598/MAX17599

Low I , Wide-Input Range, Active Clamp

Current-Mode PWM Controllers

General Description

Benefits and Features

The MAX17598/MAX17599 low I , active clamp current-

S Active Clamp, Peak Current-Mode Forward PWM

mode PWM controllers contain all the control circuitry

required for the design of wide-input isolated/non-iso-

lated forward-converter industrial power supplies. The

MAX17598 is well-suited for universal input (rectified 85V

AC to 265V AC) or telecom (36V DC to 72V DC) power

supplies. The MAX17599 is optimized for low-voltage

industrial supplies (4.5V DC to 36V DC).

Controller

S 20FA Startup Current in UVLO

S 4.5V to 36V Input-Supply Operating Range

(MAX17599)

S Programmable Input Undervoltage Lockout

S Programmable Input Overvoltage Protection

The devices include an AUX driver that drives an aux-

iliary MOSFET (clamp switch) that helps implement the

active-clamp transformer reset topology for forward con-

verters. Such a reset topology has several advantages

including reduced voltage stress on the switches, trans-

former size reduction due to larger allowable flux swing,

and improved efficiency due to elimination of dissipative

snubber circuitry. Programmable dead time between the

AUX and main driver allows for zero voltage switching (ZVS).

S Programmable 100kHz to 1MHz Switching

Frequency

S Switching Frequency Synchronization

S Programmable Frequency Dithering for Low EMI

Spread-Spectrum Operation

S Programmable Dead Time

S Adjustable Soft-Start

S Programmable Slope Compensation

S Fast Cycle-by-Cycle Peak-Current-Limit

The switching frequency is programmable from 100kHz

to 1MHz for the devices with an accuracy of Q8%

using an external resistor. This allows optimization of

the magnetic and filter components, resulting in com-

pact, cost-effective isolated/nonisolated power supplies.

For EMI-sensitive applications, the ICs incorporate a

programmable frequency-dithering scheme, enabling

low-EMI spread-spectrum operation.

S 70ns Internal Leading-Edge Current-Sense

Blanking

S Hiccup Mode Output Short-Circuit Protection

S Soft-Stop for Well-Controlled Clamp Capacitor

Discharge

S Negative Clamp-Switch Current Limit

S 3mm x 3mm, Lead-Free 16-Pin TQFN

S -40°C to +125°C Operating Temperature Range

An input undervoltage lockout (EN/UVLO) is provided for

programming input-supply start voltage, and to ensure

proper operation during brownout conditions. EN/UVLO

input is also used to turn on/off the ICs. Input overvoltage

(OVI) protection scheme is provided to make sure that

the regulator shuts down when input supply exceeds its

maximum allowed value.

Applications

Telecom and Datacom Power Supplies

Isolated Battery Chargers

To control inrush current, the devices incorporate an SS pin

to set the soft-start time for the regulators. Power dissipa-

tion under fault conditions is minimized by hiccup overcur-

rent protection (hiccup mode). Soft-stop feature provides

safe discharging of the clamp capacitor when the device

is turned off, and allows the controller to restart in a well-

controlled manner. Additionally, negative current limit is

provided in the current-sense circuitry, helping limit clamp

switch current under dynamic operating conditions.

Servers and Embedded Computing

Industrial Power Supplies

Ordering Information appears at end of data sheet.

For related parts and recommended products to use with this part,

refer to www.maximintegrated.com/MAX17598.related.

SYNC feature is provided to synchronize multiple convert-

ers to a common external clock in noise-sensitive applica-

tions. Overtemperature fault triggers thermal shutdown for

reliable protection of the device. The ICs are available in a

16-pin, TQFN package with 0.5 mm lead spacing.

For pricing, delivery, and ordering information, please contact Maxim Direct

at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.

19-6179; Rev 2; 4/14

12 3 4 5 6 7...24

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与MAX17598相关器件

型号	品牌	获取价格	描述	数据表
MAX17598_13	MAXIM	获取价格	Low IQ, Wide-Input Range, Active Clamp Current-Mode PWM Controllers
MAX17598ATE+	MAXIM	获取价格	Low IQ, Wide-Input Range, Active Clamp Current-Mode PWM Controllers
MAX17599	ADI	获取价格	低IQ、宽输入范围、有源钳位电流模式PWM控制器
MAX17599ATE+	MAXIM	获取价格	Low IQ, Wide-Input Range, Active Clamp Current-Mode PWM Controllers
MAX1759EUB	MAXIM	获取价格	Buck/Boost Regulating Charge Pump in レMAX
MAX1759EUB+	MAXIM	获取价格	Switched Capacitor Regulator, Voltage-mode, 0.1A, 1800kHz Switching Freq-Max, PDSO10, MICR
MAX1759EUB+T	MAXIM	获取价格	Switched Capacitor Regulator, Voltage-mode, 0.1A, 1800kHz Switching Freq-Max, PDSO10, MICR
MAX1759EUB-T	MAXIM	获取价格	Switched Capacitor Regulator, Voltage-mode, 0.1A, 1800kHz Switching Freq-Max, PDSO10, MICR
MAX176	MAXIM	获取价格	Serial Output.250ksps.12-Bit ADC with Track/Hold and Reference
MAX176	ADI	获取价格	串行输出、250ksps、12位ADC，带有采样/保持和电压基准

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