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參數(shù)資料
| 型號(hào)： | HIP6011 |
| 廠商： | HARRIS SEMICONDUCTOR |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Buck Pulse-Width Modulator (PWM) Controller and Output Voltage Monitor |
| 中文描述： | SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO14 |
| 文件頁(yè)數(shù)： | 9/9頁(yè) |
| 文件大小： | 89K |
| 代理商： | HIP6011 |
9
Schottky Selection
Rectifier D2 conducts when the upper MOSFET Q1 is off.
The diode should be a Schottky type for low power losses.
The power dissipation in the schottky rectifier is approxi-
mated by:
In addition to power dissipation, package selection and heat-
sink requirements are the main design tradeoffs in choosing
the schottky rectifier. Since the three factors are interrelated,
the selection process is an iterative procedure. The maxi-
mum junction temperature of the rectifier must remain below
the manufacturer’s specified value, typically 125
o
C. By using
the package thermal resistance specification and the schot-
tky power dissipation equation (shown above), the junction
temperature of the rectifier can be estimated. Be sure to use
the available airflow and ambient temperature to determine
the junction temperature rise.
HIP6011 DC-DC Converter Application Circuit
The Figure below shows an application circuit of a DC-DC
Converter for a microprocessor application.
+
-
FIGURE 10. UPPER GATE DRIVE - DIRECT V
CC
DRIVE OPTION
+12V
HIP6011
GND
UGATE
PHASE
BOOT
VCC
+5V OR LESS
NOTE:
V
G-S
≈
V
CC
- 5V
Q1
D2
P
COND
= I
O
x V
f
x (1 - D)
Where: D is the duty cycle = V
O
/V
IN
, and
V
f
is the schottky forward voltage drop
HIP6011
RT
FB
COMP
SS
REF
GND
MONITOR AND
PROTECTION
OSC
VCC
VIN
C1-C5
3x 680
μ
F
L2
C6-C11
4x 1000
μ
F
0.1
μ
F
2x 1
μ
F
1206
0.1
μ
F
1
μ
F
1206
33pF
0.01
μ
F
C16
15K
1K
SPARE
UGATE
OCSET
PHASE
BOOT
SPARE
CR1
4148
Q1
3.01K
1000pF
R6
C13
R1
SPARE
R3
R4
C15
R5
C14
C12
C17-C18
C19
C20
U1
RTN
12VCC
12
2
10
9
8
7
4
5
14
3
CR3
VOUT
RTN
ENABLE
R2
1K
COMP
TP1
PHASE
TP2
6
R7
10K
Component Selection Notes:
C1-3 - 3 Each 680
μ
F 25W VDC, Sanyo MV-GX or Equivalent
C6-9 - 4 Each 1000
μ
F 6.3W VDC, Sanyo MV-GX or Equivalent
L1 - Core: Micrometals T60-52; Winding: 14Turns of 17AWG
CR1 - 1N4148 or Equivalent
CR3 - 15A, 35V Schottky, Motorola MBR1535CT or Equivalent
Q1 - Intersil MOSFET; RFP25N05
EN
VSEN
1
OVP
13
Q2
2N6394
R8
10K
R7
1K
R8
1K
+
-
+
-
HIP6011
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HIP6011 WAF | 制造商:Harris Corporation 功能描述: |
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| HIP6011CB-T | 制造商:Rochester Electronics LLC 功能描述:STD 14SOIC BUCK PWM WITH OVER VOLTAGE PROTECTION/1.5% - Tape and Reel |
| HIP6012 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Buck and Synchronous-Rectifier Pulse-Width Modulator (PWM) Controller |
| HIP6012_04 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Buck and Synchronous-Rectifier Pulse-Width Modulator (PWM) Controller |
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