參數(shù)資料
型號(hào)： ISL6551AB-T
廠商： INTERSIL CORP
元件分類： 穩(wěn)壓器
英文描述： ZVS Full Bridge PWM Controller
中文描述： DUAL SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO28
封裝： PLASTIC, SOIC-28
文件頁(yè)數(shù)： 16/26頁(yè)
文件大?。?/td> 619K
代理商： ISL6551AB-T
16
FN9066.4
July 8, 2005
Additional Applications Information
Table 1 highlights parameter setting for the ISL6551.
Designers can use this table as a design checklist. For
detailed operation of the ISL6551, see Block/Pin Functional
Descriptions.
TABLE 1. PARAMETER SETTING HIGHLIGHTS/CHECKLIST
VDD = 12V at room temperature, unless otherwise stated.
PARAMETER
PIN NAME
FORMULA OR SETTING HIGHLIGHT
UNIT
FIGURE #
Frequency
CT
Set 50% Duty Cycle Pulses with a fixed frequency
kHz
1, 2
Dead Time
RD
DT = M x RD/k
, where M = 11.4
ns
3
Resonant Delay
R_RESDLY
t
RESDLY
= 4.01 x R_RESDLY/k
+ 13
ns
7
Ramp Adjust
R_RA
Vramp = BGREF/(R_RA x 500E-12) x dt
V
-
Current Sense
ISENSE
<Vclamp-200mV-Vramp
V
-
Peak Current
PKILIM
<BGREF and slightly higher than Vclamp
V
6
Bandgap Reference
BGREF
1.263V ±2%, 399k
pull-up, No more than 100
μ
A load
V
-
Leading Edge Blanking
R_LEB
t
LEB
= 2 x R_LEB/k
+ 15, never leave it floating
ns
8, 9
Current Share Compensation
CS_COMP
0.1
μ
for a low current loop bandwidth (100 - 500Hz)
Hz
10
Soft-Start & Output Rise Time
CSS
t
ss
= Vclamp x Css/Iss, t
rise
= EANI x CSS / Iss, Iss = 10
μ
A ±20%
S
4
Clamp Voltage (Vclamp)
CSS
Vclamp = Iss x Rcss, or Reference-based clamp
V
4, 5
Error Amplifier
EANI, EAI, EAO
EANI, EAO < Vclamp
V
-
Share Support
SHARE
30K load & a resistor (1K, typ.) between EANI and OUTPUT REF.
-
-
Latching Shutdown
LATSD
Latch IC off at > 3V
V
-
Power Good
DCOK
±5% with hysteresis, Sink up to 5mA, transient rejection
V
11, 12
IC Enable
ON/OFF
Turn on/off at TTL level
V
-
Reference Ground
VSS
Connect to PGND in only one single point
-
-
Power Ground
PGND
Single point to VSS plane
-
-
Upper Drivers
UPPER1, UPPER2
Capacitive load up to 1.6nF at Fsw = 500kHz
-
-
Lower Drivers
LOWER1, LOWER2 Capacitive load up to 1.6nF at Fsw = 500kHz
-
-
Synchronous Drive Signals
SYNC1, SYNC2
Capacitive load up to 20pF at Fsw = 500kHz
-
-
Bias for Control Circuits
VDD
12V ±10%, 0.1
μ
F decoupling capacitor
V
-
Biases for Bridge Drivers
VDDP1, VDDP2
Need decoupling capacitors
V
-
ISL6551
相關(guān)PDF資料
PDF描述
ISL6551IB-T ZVS Full Bridge PWM Controller
ISL6551IB ZVS Full Bridge PWM Controller
ISL6551IBZ Cable Carrier; External Height:30"; Body Material:Steel; Color:Zinc Plated RoHS Compliant: Yes
ISL6551IBZ-T MODIFIED HARDWARE PACKAGE RoHS Compliant: Yes
ISL6551 ZVS Full Bridge PWM Controller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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ISL6551AR 制造商:Rochester Electronics LLC 功能描述: 制造商:Intersil Corporation 功能描述:
ISL6551AR-T 制造商:Rochester Electronics LLC 功能描述: 制造商:Intersil Corporation 功能描述:
ISL6551ARZ 功能描述:IC REG CTRLR FLYBACK PWM 28-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:275kHz 占空比:50% 電源電壓:18 V ~ 110 V 降壓:無 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:是 工作溫度:-40°C ~ 85°C 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR)
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