参数资料
| 型号： | IR3553MTRPBF |
| 厂商： | International Rectifier |
| 文件页数： | 4/22页 |
| 文件大小： | 0K |
| 描述： | IC DRIVER GATE 40A PQFN |
| 标准包装： | 1 |
| 系列： | * |
| 其它名称： | IR3553MTRPBFDKR |
PIN ? DESCRIPTIONS ?
?
40A ? Integrated ? PowIRstage? ?
IR3553
PIN #
1 ?
2 ?
3 ?
4, ? 12, ? 13 ?
5, ? 25 ?
6 ? – ? 11 ?
14 ? – ? 16 ?
17 ?
18 ?
19 ?
20 ?
21 ?
22 ?
23 ?
24 ?
PIN NAME
CSIN ‐?
CSIN+ ?
VCC ?
PGND ?
GATEL ?
SW ?
VIN ?
BOOST ?
PHSFLT# ?
PWM ?
BBRK# ?
LGND ?
REFIN ?
IOUT ?
TGND ?
PIN DESCRIPTION
Inverting ? input ? to ? the ? current ? sense ? amplifier. ? Connect ? to ? LGND ? if ? the ? current ? sense ?
amplifier ? is ? not ? used. ?
Non ‐ Inverting ? input ? to ? the ? current ? sense ? amplifier. ? Connect ? to ? LGND ? if ? the ? current ? sense ?
amplifier ? is ? not ? used. ?
Bias ? voltage ? for ? control ? logic. ? Connect ? a ? minimum ? 1uF ? cap ? between ? VCC ? and ? PGND ? (pin ?
4) ? if ? current ? sense ? amplifier ? is ? used. ? Connect ? a ? minimum ? 0.1uF ? cap ? between ? VCC ? and ?
PGND ? (pin ? 4) ? if ? current ? sense ? amplifier ? is ? not ? used. ?
Power ? ground ? of ? MOSFET ? driver ? and ? the ? synchronous ? MOSFET. ?? MOSFET ? driver ? signal ? is ?
referenced ? to ? this ? pin. ???
Low ‐ side ? MOSFET ? driver ? pins ? that ? can ? be ? connected ? to ? a ? test ? point ? in ? order ? to ? observe ?
the ? waveform. ???
Switch ? node ? of ? synchronous ? buck ? converter. ?
High ? current ? input ? voltage ? connection. ?? Recommended ? operating ? range ? is ? 4.5V ? to ? 15V. ?
Connect ? at ? least ? two ? 10uF ? 1206 ? ceramic ? capacitors ? and ? a ? 0.1uF ? 0402 ? ceramic ? capacitor. ?
Place ? the ? capacitors ? as ? close ? as ? possible ? to ? VIN ? pins ? and ? PGND ? pins ? (12 ‐ 13). ? The ? 0.1uF ?
0402 ? capacitor ? should ? be ? on ? the ? same ? side ? of ? the ? PCB ? as ? the ? IR3553. ?
Bootstrap ? capacitor ? connection. ? The ? bootstrap ? capacitor ? provides ? the ? charge ? to ? turn ? on ?
the ? control ? MOSFET. ? Connect ? a ? minimum ? 0.22μF ? capacitor ? from ? BOOST ? to ? SW ? pin. ? Place ?
the ? capacitor ? as ? close ? to ? BOOST ? pin ? as ? possible ? and ? minimize ? the ? parasitic ? inductance ? of ?
the ? connection ? from ? the ? capacitor ? to ? SW ? pin. ??
Open ? drain ? output ? of ? the ? phase ? fault ? circuits. ? Connect ? to ? an ? external ? pull ‐ up ? resistor. ?
Output ? is ? low ? when ? a ? MOSFET ? fault ? or ? over ? temperature ? condition ? is ? detected. ?
3.3V ? logic ? level ? tri ‐ state ? PWM ? input ? and ? 7V ? tolerant. ? “High” ? turns ? the ? control ? MOSFET ?
on, ? and ? “Low” ? turns ? the ? synchronous ? MOSFET ? on. ? “Tri ‐ state” ? turns ? both ? MOSFETs ? off ? in ?
Body ‐ Braking? ? mode. ? In ? diode ? emulation ? mode, ? “Tri ‐ state” ? activates ? internal ? diode ?
emulation ? control. ? See ? “PWM ? Tri ‐ state ? Input” ? Section ? for ? further ? details ? about ? the ? PWM ?
Tri ‐ State ? functions. ?
3.3V ? logic ? level ? input ? and ? 7V ? tolerant ? with ? internal ? weak ? pull ‐ up ? to ? 3.3V. ? Logic ? low ?
disables ? both ? MOSFETs. ? Pull ? up ? to ? VCC ? if ? Body ‐ Braking ? ? is ? not ? used. ?? Pulling ? BBRK# ? low ?
at ? least ? 20ns ? after ? VCC ? passes ? its ? UVLO ? threshold ? selects ? internal ? diode ? emulation ?
control. ? See ? “Body ‐ Braking ? ? Mode” ? Section ? for ? further ? details. ?
Signal ? ground. ? ? Driver ? control ? logic, ? analog ? circuits ? and ? IC ? substrate ? are ? referenced ? to ?
this ? pin. ?
Reference ? voltage ? input ? from ? the ? PWM ? controller. ? IOUT ? signal ? is ? referenced ? to ? the ?
voltage ? on ? this ? pin. ? Connect ? to ? LGND ? if ? the ? current ? sense ? amplifier ? is ? not ? used. ?
Current ? output ? signal. ? Voltage ? on ? this ? pin ? is ? equal ? to ? V(REFIN) ? + ? ? 32.5 ? * ? [V(CSIN+) ? – ?
V(CSIN ‐ )]. ? Float ? this ? pin ? if ? the ? current ? sense ? amplifier ? is ? not ? used. ?
This ? pin ? is ? connected ? to ? internal ? power ? and ? signal ? ground ? of ? the ? driver. ? ? For ? best ?
performance ? of ? the ? current ? sense ? amplifier, ? TGND ? must ? be ? electrically ? isolated ? from ?
Power ? Ground ? (PGND) ? and ? Signal ? Ground ? (LGND) ? in ? the ? PCB ? layout. ???
4
November ? 29, ? 2012 ??? | ? FINAL ? DATASHEET
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