HIP5020 Datasheet PDF - Intersil Corporation
| Part Number | HIP5020 | |
| Description | Integrated-Power Buck Converter Controller with Synchronous Rectification | |
| Manufacturers | Intersil Corporation | |
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Data Sheet
HIP5020
January 1997
File Number 4243
Integrated-Power Buck Converter
Controller with Synchronous Rectification
The HIP5020 is a high-efficiency, buck converter controller
with synchronous rectification and integral power MOSFETs.
Integrated current sensing eliminates the external resistor
and saves power. The controller combines two methods of
regulation: Current mode control for outstanding regulation
response to large signal load transients, and Hysteretic
mode control for high efficiency at low output currents.
The HIP5020 controller offers a high degree of flexibility.
Small components set the switching frequency, the soft-start
interval and the load current boundary between Run and
Hysteretic modes. These adjustments enable the designer
to best optimize the trade-offs of cost, efficiency and size.
The example application guide section illustrates these
trade-offs with component and vendor suggestions for three
circuit designs. These designs are suitable for use without
modification. However, the block diagram, detailed
description and HIP5020 component specifications enable
further optimization to meet specific requirements.
Features
• High Efficiency - Above 95%
• Integrated N-Channel Synchronous Rectifier
and Upper MOSFETs - 75mΩ Each
• Wide Input Voltage and Load Range
- 4.5VDC to 18VDC (5 to 12 NiCd Battery Cells)
- Up to 3.5ADC
• Automatically Switches Regulation Mode
- Current Mode Control for Excellent Performance at
High Load Currents
- Hysteretic Control for High Efficiency at Light Load
Currents
• Flexible and Easy to Use
- Ready-to-Use Example Applications
- Custom Optimization with Small Components
- Design and Simulation Software Available
• Integrated, Low-Loss Current Sensing
• Over-Current Protection
Ordering Information
TEMP.
PART NUMBER RANGE (oC)
PACKAGE
HIP5020DB
0 to 70 28 Ld SOIC
PKG.
NO.
M28.3
• Adaptive Dead-Time - Eliminates Shoot-Through
• 100kHz to 1MHz PWM Switching Frequency
• Thermally Enhanced SOIC Package
Applications
Pinout
HIP5020 (SOIC)
TOP VIEW
VIN 1
VIN 2
VIN 3
PHASE 4
PHASE 5
6
PGND 7
(WEB) 8
9
GND 10
FB 11
VINF 12
HMI 13
SLOPE 14
28 PHASE
27 PHASE
26 SD
25 SOFT
24 OVLD
23
22 PGND
21 (WEB)
20
19 CP-
18 CP+
17 VCC
16 BOOT
15 CT
• Notebook Computers
• Portable Telecommunications
• Portable Instruments
Typical Application
HIP5020
MODE
CONTROL AND
VIN PROTECTION
INTERNAL
SUPPLY
100
VIN = 6V
95 VO = 5V
90 VIN = 5V
VO = 3.3V
85
80
0.001 0.01 0.1 1 10
L1 LOAD CURRENT (A)
14µH
440µF
C1 VOUT
REGULATION
AND CONTROL
2-13
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207 | Copyright © Intersil Corporation 1999
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HIP5020
+
VIN
-
VIN VCC
R5 C2
C12
C5
CP+
BOOT
HIP5020
PHASE
CP-
C10 ON/OFF
VINF
SD
CT
PGND
FB
SLOPE
OVLD
C6
SOFT GND HMI
C7
C8 R4
D1 C4
C3
L1
R6
D2
C9 R1
R2
VO
C1
FIGURE 1. EXAMPLE APPLICATION CIRCUIT
TABLE 1. EXAMPLE APPLICATION PERFORMANCE PARAMETERS
These characteristics are for the circuit shown in Figure 1 with the components given in Tables 2 and 3.
PARAMETER
CONDITIONS
CIRCUIT 1
HIGH EFFICIENCY
CIRCUIT 2
SMALL SIZE
CIRCUIT 3
LOW COST
Input Voltage
- Typical
- Range
3 Li-Ion Cells:
11.1
8.1 to 16
2 Li-Ion Cells:
7.4
5.4 to 12
9 Nicd Cells:
10.8
8.1 to 16
Switching Frequency
200 ±15%
625 ±15%
120 ±20%
Output Voltage Variation
Line Regulation
Load Regulation
Output Voltage Ripple
- Full Load
- Light Load
Efficiency
- Full load
- Peak
- Light Load
Estimated Circuit Area
Tallest Component
Initial Setting
Input Voltage Range; IO = 1ADC
IO = 0.1 to 3ADC, VIN = Typical
Bandwidth < 20MHz
IO = 3ADC, VIN = Typical
IO = 50mADC, VIN = Typical
IO = 3ADC, VIN = Typical
0.5 < IO < 2ADC, VIN = Typical
IO = 50mADC, VIN = Typical
3.3 ±3.5%
±0.1
±0.3
18
50
86
92
88
3.5
0.45
3.3 ±2.2%
±0.1
±0.3
30
80
86
89
84
2.1
0.24
3.3 ±3.5%
±0.1
±0.4
20
70
86
90
72
3.6
0.68
Normalized Circuit Cost Ratio of total circuit cost to Circuit 2
1.1
1 0.75
UNITS
VDC
kHz
V
%
%
mV
%
%
%
in2
in
COMPONENT
D1
D2
L1
C1
C2
C3
TABLE 2. COMPONENT SUGGESTIONS FOR EXAMPLE APPLICATION CIRCUITS
CIRCUIT 1
CIRCUIT 2
CIRCUIT 3
MBR0540
MBR0540
1N4148
MBR0540
Not Used
Not Used
16µH, RDC < 15mΩ
2x - 220µF, 10V OS-CON
ESRMAX (100kHz) < 35mΩ
100µF, 20V OS-CON
ESRMAX (100kHz) < 30mΩ
0.1µF ±20% - Ceramic
5µH, RDC < 22mΩ
3x - 220µF, 10V Tantalum
ESRMAX (100kHz) < 100mΩ
2x - 100µF, 16V Tantalum
ESRMAX (100kHz) < 100mΩ
0.1µF ±10% - Ceramic
26µH, RDC < 25mΩ
3x - 390µF, 25V, Aluminum
ESRMAX (100kHz) < 65mΩ
2x - 390µF, 25V Aluminum
ESRMAX (100kHz) < 65mΩ
0.1µF ±20% - Ceramic
2-17
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