Ht7180 3.7V L 12v/2a built in MOS high current boost IC solution

Power circuit is an essential part of electronic products . However, different devices or modules have different operating voltages , therefore DC-DC Voltage conversion circuit is very common in application . For example, portable electronic products , Generally, there is a built-in battery , If it is a single lithium battery 3.7V Power supply , adopt DC-DC Boost circuit , from 3.7V Boost to 5V、8V、9V、12V And then supply power to other circuits .

The boost circuit belongs to the switch type circuit , What I care about most is input MOS Switch current 、 Output boost value 、 Boost output current or output power and efficiency .70W The following are built-in MOS Tube monolithic chip DC-DC Boost integrated circuits are very mature . But the most suitable products for different application fields , Or under limited application conditions, performance optimization is still a topic worth studying . Like the market SOT23 Packaged DC-DC boost IC from 3.7V Boost to 12V, The voltage is enough but the current is not enough ;SOP8 Packaged DC-DC boost IC The built-in switch tube current achieves 5A, But the pressure rise can only reach 9V, The application has limitations .

Shenzhen yongfukang Technology Co., Ltd. aims at the boost value 13V Following DC-DC Boost application requirements , Promote an integrated 10A Switch tube 12.8V Output 、 High current asynchronous DC-DC boost IC：HT7180.HT7180 Adopt unique circuit R & D technology and advanced semiconductor process , be based on SOP8 encapsulation , Work efficiency up to 90% above , No additional radiator is required ,3.7V Input boost to 12V, Stable output 2A electric current .

1. HT7180 summary  
HT7180 It is a high-power asynchronous boost converter , Integrate 22mΩ Power switch tube , Provide efficient small-scale solutions for portable systems .HT7180 have 2.7V to 12V Wide input voltage range , It can support applications with single or two lithium batteries . The device has 10A Switching current capability , And can provide up to 12.8V The output voltage of . HT7180 It also supports programmable soft start , And adjustable Switching peak current limit . HT7180 It also supports two different kinds of tr/tf, To adapt to different EMI And efficiency requirements . Besides , The device also provides 13V Output overvoltage protection 、 And thermal shutdown protection .

2. HT7180 characteristic

Input voltage range ：2.7V-12V

Output voltage range ： The highest 12.8V

Fixed switching frequency ：500kHz

High conversion efficiency ：

94% (VIN = 7.2V, VOUT=9.3V, IOUT =1.5A)

90% (VIN = 7.2V, VOUT=9.3V, IOUT =6A)

93% (VIN = 7.2V, VOUT=12V, IOUT =1.5A)

89% (VIN = 7.2V, VOUT=12V, IOUT =4.5A)

89% (VIN = 3.6V, VOUT=12V, IOUT =1A)

82% (VIN = 3.6V, VOUT=12V, IOUT =2A)

Low shutdown power consumption , Turn off the current 1uA

Two kinds of support tr/tf Pattern , Answer EMI Challenge

Programmable soft start

Output overvoltage (13V)、 Thermal shutdown and other protection

eSOP8L-PP Lead free packaging

3. HT7180 applications

Pull rod speaker 、 Portable speakers 、 Wireless speakers

Charging equipment 、 Portable source 、USB TYPE-C Power transmission

The tablet , laptop POS Machine end

4. Typical application parameters

HT7180 It is applied to boost voltage of single lithium battery 、 Typical boost parameters of two lithium batteries are as follows ：

Single lithium battery 3.7V Apply boost to 9V/3A/27W.

Single lithium battery 3.7V Apply boost to 12V/2A/24W.

Double lithium battery 7.4V Apply boost to 10V/6A/60W.

Double lithium battery 7.4V Apply boost to 12V/5A/60W.

Single section / Boost the output voltage of double lithium batteries / electric current / Power and corresponding FB Set the resistance value of the pin ：

5. HT7180 Application information

(1). HT7180 Foot bitmap

(2). HT7180 Pin instructions

(3). HT7180 DEMO Primitively

(4). HT7180 DEMO plate PCB Top level design drawing

(5). HT7180 DEMO plate PCB Ground floor design drawing

(6). HT7180 DEMO Plate patch diagram

(7). HT7180 DEMO Board bill of materials

(8). HT7180 DEMO Physical drawing of the board